WO2019078487A2 - Flushing apparatus for injecting hazardous medical liquid, and apparatus for injecting hazardous medical liquid - Google Patents

Abstract

A flushing apparatus according to embodiments of the present disclosure comprises: a main body which is configured to connect a connection pipe for guiding hazardous medical liquid, harmful to a human body when exposed to external air, to a patient connection module for injecting the hazardous medical liquid to a patient, has a first flow channel formed to guide the hazardous medical liquid from the connection pipe to the patient connection module, and includes a flushing portion having a second flow channel formed to be connected to a predetermined connection point located between both ends of the first flow channel; and a flow rate reduction portion which is arranged upstream of the connection point in the first flow channel, and is configured to reduce the flow rate of the hazardous medical liquid flowing in the first flow channel. The present disclosure presents various embodiments of such a flushing apparatus.

Description

Flushing device for injecting dangerous chemicals and injecting device for dangerous chemicals

The present disclosure relates to a medical device for the injection of dangerous chemical liquids.

In order to supply a drug to a patient, a drug solution injecting device for injecting a liquid drug into the patient is known. The drug solution in the predetermined storage space is introduced into the patient's body through the passage (for example, the inner space of the tube and the injection needle) that is connected to the patient by using the above-described drug solution injector.

On the other hand, dangerous drugs are known which have harmful effects on the human body when exposed to the outside air. For example, the above-mentioned dangerous drugs include anticancer agents such as 5-FU. When the dangerous chemical liquid is exposed to the outside air of the chemical liquid injecting apparatus when injecting the 'dangerous chemical liquid' (hereinafter referred to as 'dangerous chemical liquid') into the patient by using the chemical liquid injecting apparatus, (Such as doctors, nurses, etc.) due to the fact that they are burnt or vaporized into the respiratory system of the human body.

On the other hand, for medical purposes, a flow rate control module is known in which a dangerous drug is injected into the body of a patient at a time and slowly injected into the body for a considerable period of time. The flow rate adjusting module is disposed in the passage of the chemical liquid injecting device to reduce the flow rate of the liquid flowing in the passage.

On the other hand, in order to prevent air from being introduced into the patient's body during the use of the liquid medicament injecting device, a pathway (for example, an inner space of the tube and the injection needle) A priming operation for filling a liquid (for example, a chemical solution to be injected) is known.

If the passage is filled with the dangerous chemical liquid during the priming operation before injecting the dangerous chemical liquid into the patient, there is a risk that the dangerous chemical liquid is exposed to the outside air at the injection needle tip or the like. Accordingly, in the prior art, there has been known a method of filling a priming liquid which is harmless to the human body in priming operation before injection of the dangerous chemical liquid into the passage.

In the conventional chemical liquid injecting apparatus, a predetermined inlet for introducing the priming liquid into the passage is constituted. In order to fill the inside of the passageway with the priming liquid as a whole during the priming operation, the inlet is disposed at an upstream portion of the passageway. Accordingly, in the conventional chemical liquid injecting apparatus, the flow rate reduction module is disposed on the downstream side of the inlet.

This disclosure may help a medical practitioner to safely and conveniently perform a medical treatment using the dangerous drug.

There is still a problem in that when the injection needle is separated from the patient after the injection of the dangerous drug is completed in the patient, the dangerous drug is leaked from the end of the injection needle, thereby lethally damaging the human body. The present disclosure can help to facilitate the flushing step described below to solve this problem.

In the prior art, when the flushing liquid, which will be described later, is introduced into the passage through the inlet for introducing the priming liquid to perform the flushing step, the flow rate reduction module disposed on the downstream side of the inlet There is a problem that the time required for the flushing step becomes long. Particularly, when the injection of the dangerous chemical liquid is stopped during the injection of the dangerous chemical liquid and the flushing step is performed due to a sudden medical need such as a side effect of injecting the dangerous chemical liquid, if the flushing liquid is introduced through the inlet, There is a problem that a large delay of the action occurs and irreversible damage is caused to the patient as well as a problem that a considerable amount of the dangerous chemical solution remaining on the downstream side in the passage based on the inlet is unnecessarily injected into the patient . The present disclosure solves this problem, helps to complete the flushing step within a short period of time after the flushing step is started, and can reduce the amount of the dangerous chemical solution unnecessarily injected into the patient.

While the present invention solves the above problems, the present disclosure can help the priming operation to be performed safely and conveniently.

After the injection of the hazardous chemical liquid into the patient is completed, the dangerous chemical liquid remains in the chemical liquid injecting apparatus. In the prior art, there is a risk that the residual dangerous chemical liquid in the chemical liquid injecting apparatus leaks to the outside in the process of discarding the chemical liquid injecting apparatus that has been used for injecting the dangerous chemical liquid. This disclosure can reduce the risk of leakage of the dangerous chemical liquid from the chemical liquid injecting apparatus after such use.

The flushing apparatus for injecting a hazardous chemical solution according to an embodiment of the present disclosure is configured to connect a connection pipe for guiding a hazardous chemical liquid harmful to a human body when exposed to outside air and a patient connection module for injecting the dangerous chemical liquid into a patient, And a flushing portion for forming a first flow path for guiding the hazardous liquid from the connection tube to the patient connection module and a second flow path connected to a predetermined connection point located between both ends of the first flow path, body; And a flow rate reduction unit arranged on the upstream side of the connection point in the first flow path and configured to reduce a flow rate of the hazardous liquid flowing in the first flow path.

The apparatus for injecting a dangerous chemical liquid according to an embodiment of the present disclosure includes: a pumping module configured to pressurize the dangerous chemical liquid; A connection pipe through which the dangerous chemical liquid flowing out from the pumping module flows according to the pressure in the pumping module; And a flushing device.

According to an embodiment, the main body may include an integrally formed joint part. The joint part may form a connection flow path that is a part of the first flow path connecting the downstream end of the flow rate reduction part to the connection point.

Through the flushing device, it is possible to safely handle the dangerous drug to the medical staff and the patient, and to improve the convenience of the medical treatment for injecting the dangerous medicine of the medical staff.

Further, it is possible to shorten the time required for the flushing operation in a situation where the patient connecting module is separated from the patient urgently while conveniently using the function of the flow rate reduction unit through the flushing apparatus, The amount of dangerous chemicals can be reduced.

Further, by providing the joint part, when the flushing apparatus is discarded after the flushing operation, the probability of occurrence of a dangerous situation in which the joint part is separated and the internal dangerous chemical liquid is exposed to the outside can be reduced.

Further, since the joint part does not need to be separated and assembled, it is possible to significantly reduce the probability that infectious substances such as unhygienic foreign substances and viruses are introduced into the flow path.

1A is a conceptual diagram showing an entire system of a dangerous chemical liquid injector 1 according to an embodiment of the present disclosure.

1B is a conceptual diagram showing an entire system of a dangerous chemical liquid injector 1 'according to another embodiment of the present disclosure.

2 is an elevational view of the flushing apparatus 700 according to the first embodiment of the apparatus for injecting hazardous chemical liquids 1, 1 'of Figs. 1A and 1B.

3 is a cross-sectional view of the flushing apparatus 700 except for the flushing port opening / closing part 740 cut along the flow path P in FIG. Figure 3 shows a partial enlarged view showing a partial operating mechanism.

4 is an exploded perspective view of the flushing apparatus 700 in a state where the downstream vent cap 780 is removed in FIG.

5 is an elevational view of a flushing apparatus 700 'according to a second embodiment of the apparatus for injecting hazardous chemical liquids 1, 1' of Figs. 1A and 1B.

6 is an exploded perspective view of the flushing apparatus 700 'of FIG.

7 is an elevational view of a flushing device 700 '' according to a third embodiment of the hazardous liquid injection device 1, 1 'of Figs. 1A and 1B.

Fig. 8 is a cross-sectional view of the flushing apparatus 700 "of Fig. 7 taken along the flow path P. Fig.

Fig. 9 is an exploded perspective view of the flushing device 700 '' of Fig.

10 is a cross-sectional view of a flushing apparatus 700 '' 'according to a fourth embodiment of the apparatus for injecting dangerous chemical liquids 1 and 1' shown in FIGS. 1A and 1B along a flow path P. FIG.

11 is a cross-sectional view of a flushing apparatus 700 '' '' according to a fifth embodiment of the apparatus for injecting dangerous chemical liquids 1 and 1 'shown in FIGS. 1A and 1B along a flow path P. FIG.

The embodiments of the present disclosure are illustrated for the purpose of describing the technical idea of the present disclosure. The scope of the claims according to the present disclosure is not limited to the embodiments described below or to the detailed description of these embodiments.

All technical and scientific terms used in the present disclosure have the meaning commonly understood by one of ordinary skill in the art to which this disclosure belongs unless otherwise defined. All terms used in the disclosure are selected for the purpose of more clearly illustrating the disclosure and are not chosen to limit the scope of the rights under the present disclosure.

As used in this disclosure, expressions such as " comprising, " " having, " " having, " and the like, unless the context requires otherwise, (open-ended terms).

The expressions of the singular forms described in this disclosure may include plural meanings unless the context clearly dictates otherwise, and the same applies to the singular expressions set forth in the claims.

As used in this disclosure, expressions such as " first ", " second ", and the like are used to distinguish a plurality of components from one another, and do not limit the order, importance, or generality of the components.

Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. In the accompanying drawings, a prime symbol (') or a plurality of prime symbols (' ',' '', '' '') may be displayed after the reference numerals in order to distinguish between different embodiments . Also, in the accompanying drawings, the same or corresponding components are denoted by the same reference numerals. In the following description of the embodiments, description of the same or corresponding components may be omitted. However, even if a description of components is omitted, such components are not intended to be included in any embodiment.

In the present disclosure, " dangerous chemical liquid " means a chemical liquid which is harmful to the human body when exposed to the outside air. The dangerous chemical liquid is a chemical liquid known to adversely affect the human body if it is adhered to the skin of the human body or is vaporized and flows into the respiratory system of the human body. For example, as the above-mentioned dangerous chemical solution, there can be mentioned an immobilized liquid such as 5-FU.

Hereinafter, with reference to FIGS. 1A and 1B, an apparatus for injecting a dangerous chemical solution 1, 1 'according to an embodiment of the present disclosure and another embodiment will be described. The apparatus for injecting a dangerous chemical solution (1, 1 ') comprises a pumping module (100) configured to pressurize the dangerous chemical liquid. The apparatus for injecting a dangerous chemical solution (1, 1 ') comprises a connecting pipe (300, 300') for guiding the dangerous chemical liquid. According to the pressure in the pumping module 100, the dangerous chemical liquid flowing out from the pumping module 100 flows through the connection pipes 300 and 300 '.

The apparatus for injecting a dangerous chemical solution 1 or 1 'may include a port module 200 or 200' connected to the connection pipe 300 or 300 'or the pumping module 100. The port modules 200 and 200 'are configured to be capable of filling liquid (e.g., dangerous drug or priming liquid) into the pumping module 100. The liquid introduced through the port modules 200, 200 'may be introduced into the pumping module 100.

The priming liquid means a liquid that is harmless to the human body even when exposed to the outside air, and can flow into the body. For example, the liquid for priming may be a saline solution.

The dangerous chemical liquid injector 1 or 1 'may include a connection pipe opening / closing module 400 or 400' configured to change whether at least one of the connection pipes 300 and 300 'is open or closed. The apparatus for injecting hazardous chemical liquids 1 and 1 'may include a filter module 500 for filtering out foreign substances of liquid flowing into the connection pipes 300 and 300'.

The apparatus for injecting a dangerous chemical solution (1, 1 ') includes a patient connection module (600, 600') for injecting the dangerous chemical into the patient. The patient connection module 600, 600 'includes components that are introduced into the patient's body, such as the injection needle 610.

The patient connection module 600, 600 'may include an inlet part including a component to be introduced into the patient's body, such as the injection needle 610, and a remainder part. The lead-in part and the remaining part may be detachably coupled to each other. In this case, the inflow part is connected to the patient but is separated from the remaining part, and the user inserts the remaining part into the flushing device 700, 700 ', 700' ', 700' '', 700 " And then joining the lead-in part and the remaining part to each other. In this case, the liquid passing through the flushing devices 700, 700 ', 700' ', 700' '', 700 '' '' may be sequentially introduced into the patient's body via the remaining part and the incoming part .

The apparatus for injecting a dangerous chemical solution 1, 1 'comprises a flushing device 700, 700', 700 ", 700 '' ', 700' ', 700 " " '). The flushing devices 700, 700 ', 700' ', 700' '', 700 '' '' are connected to the patient connection modules 600 and 600 ' Thereby forming one flow path P1. The flushing apparatus 700, 700 ', 700' ', 700' '', 700 '' '' includes a second flow path (not shown) connected to a predetermined connection point P1F located between both ends of the first flow path P1 P2. The liquid for flushing can flow into the first flow path P1 from the outside through the second flow path P2.

The flushing liquid means a liquid that is harmless to the human body even when it is exposed to the outside air and can flow into the body. For example, the liquid for flushing may be a saline solution.

The process of injecting the dangerous chemical liquid into the patient using the dangerous chemical liquid injector 1 or 1 'according to the embodiments of the present disclosure may include a priming process, a chemical liquid injection process, and a flushing process, .

In the state where the patient connection module 600 or 600 'is disconnected from the patient' or the 'incoming connection part of the patient connection module 600 or 600' is connected to the patient but the remaining part is disconnected, The step proceeds. In the priming step, priming liquid is filled in predetermined predetermined passageways through which the dangerous chemical liquid flows. After performing the priming step, exposure of the dangerous chemical liquid to the outside air can be prevented in the priming step by connecting the patient connection module 600, 600 'to the patient or coupling the lead-in part to the remaining part .

In the present embodiment, the predetermined passage includes a connection pipe 300 and 300 'and a flushing device 700, 700', 700 '', 700 '' ', and 700' '' '. The predetermined passage may further include a patient connection module 600, 600 'connected to the flushing device 700, 700', 700 '', 700 '' ', 700' '' '.

After connecting the patient connection module 600, 600 'to the patient, the chemical liquid injection step is performed. In the chemical liquid injection step, the dangerous chemical liquid flows along the predetermined passage in accordance with the pressure in the pumping module 100. Accordingly, in the early stage of the chemical liquid injecting step, the priming liquid filled in the predetermined passage flows into the patient's body. Thereafter, the dangerous chemical liquid flowing after the priming liquid starts to flow into the patient's body.

After the chemical liquid injecting step, the flushing step proceeds. In the flushing step, liquid for flushing flows into a predetermined intermediate point in the predetermined passage through the flushing apparatuses 700, 700 ', 700' ', 700' '', and 700 '' ''. In the flushing step, the introduced flushing liquid pushes the dangerous drug filled in the downstream portion in the predetermined passage in the downstream direction. Accordingly, in the early stage of the flushing step, the dangerous drug, which has been filled in the downstream side portion of the predetermined passage, flows into the patient's body. Thereafter, the flushing liquid flowing after the dangerous drug starts to flow into the patient's body. The flushing step may be terminated by separating the patient connection module 600 or 600 'from the patient after the flushing liquid starts to flow into the patient's body, and the injection of the dangerous drug You can complete the process.

The "upstream" and "downstream" used in the present disclosure mean that the pumping module 100 is in fluid communication with the connection pipe 300, 300 ', the flow path P and the patient connection module 600, 600' Is defined based on a direction in which the dangerous chemical flows. Specifically, arrow directions of arrows F2, F3 and F4 in Figs. 1A and 1B are defined as the downstream direction, and the direction opposite to the downstream direction is defined as the upstream direction.

Referring to FIGS. 1A and 1B, the pumping module 100 includes a chamber 110 configured to receive the hazardous chemical liquid. The chamber 110 forms an internal space with the pressurizing unit 120. And the dangerous chemical liquid may be stored in the internal space. In another embodiment, the priming liquid may be temporarily stored in the inner space.

In the chamber 110, a discharge port portion 111 through which liquid in the chamber 110 is discharged is formed. The discharge port portion 111 may protrude from the outer surface of the chamber 110.

In this embodiment, the valve 111a may be disposed in the discharge port portion 111. [ The valve 111a may be configured to open the discharge port portion 111 when pressed by the module connection portion 350 disposed at the upstream end of the connection pipe 300 or 300 '. The valve 111a may include a swab-able valve 111a. The swabble valve 111a includes a surface forming a hole that is open when pressed from the outside. The swabble valve 111a is configured so that a user can wipe the surface of the swabble valve.

The pumping module 100 includes a pressurization unit 120 that pressurizes the liquid within the chamber 110. The pressure unit 120 may be disposed within the chamber 110. The pressing unit 120 includes a pressing surface 122 facing the inner space of the chamber 110. The pressing surface 122 may contact the liquid inside the chamber 110 and push the liquid directly. The pressing surface 122 can pressurize the liquid in the chamber 110 by moving in the predetermined pressing direction Ap1. When the liquid is being filled into the chamber 110, the pressing surface 122 moves in the opposite direction Ap2 of the pressing direction Ap1. 1A and 1B, the position in which the pressing surface 122 and the sliding portion 121 are moved in the opposite direction Ap2 is shown with reference to 120A.

The pressurizing unit 120 includes a sliding portion 121 configured to slide and move on the inner surface of the chamber 110. The sliding portion 121 is configured to move integrally with the pressing surface 122. The sliding portion 121 may be configured to prevent liquid in the chamber 110 from leaking between the pressing surface 122 and the inner surface of the chamber 110. [

The pressurizing unit 120 may include a pressurizing operation portion 123 that provides power to move the pressing surface 122 in the press direction Ap1. For example, the pressurizing portion 123 may be configured to pressurize the liquid in the chamber 110 using volume expansion by gas activation. As another example, the pressing operation portion 123 may provide a portion that can be held by the user, so that the user can move the pressing surface 122 in the pressing direction Ap1.

Although not shown, as another example, the pressing unit 120 can be configured to pressurize the liquid using the elastic force of an elastic body such as a balloon. In this case, the pressurizing unit 120 may be configured to pressurize the liquid in the balloon.

The port modules 200 and 200 'are configured to be capable of filling liquid into the chamber 110. Liquid can be introduced from the outside into the connection pipe 300 or 300 'or the chamber 110 through the port module 200 or 200'. The port modules 200 and 200 'are connected to the connection tubes 300 and 300' or the chamber 110.

The liquid can move into the connection pipe 300, 300 '. The upstream ends of the connectors 300, 300 'are connected to the pumping module 100. The downstream ends of the connectors 300 and 300 'are connected to the flushing devices 700, 700', 700 '', 700 '' ', and 700' '' '. The connectors 300 and 300 'guide the movement of the hazardous liquid from the pumping module 100 to the flushing apparatus 700, 700', 700 '', 700 '' ', 700' '' '. The connectors 300 and 300 'may be formed of a flexible material.

The apparatus for injecting dangerous chemical liquid 1, 1 'includes a module connection part 350 connected to the discharge port part 111. The liquid discharged from the discharge port portion 111 through the module connection portion 350 can be introduced into the connection pipes 300 and 300 '.

In this embodiment, the module connection portion 350 may be configured to be coupled to the discharge port portion 111 by the user. The module connection part 350 may be configured such that it can not be separated by the user in a general manner once it is coupled to the discharge port part 111. [ Specifically, in a state where the module connecting portion 350 is initially separated from the discharge port portion 111, the discharge port portion 111 is kept closed by the valve 111a. In a state where the module connecting portion 350 is coupled to the discharge port portion 111, a part of the module connecting portion 350 presses the valve 111a, and thus the discharge port portion 111 which has been closed is opened. The liquid inside the chamber 110 can be introduced into the connection pipes 300 and 300 'through the discharge port portion 111 in the open state of the discharge port portion 111. [ The module connection portion 350 may be configured such that when the module connection portion 350 is once coupled to the discharge port portion 111 by the user, the module connection portion 350 can not be separated by the user in a general manner.

Although not shown, in another example, the upstream end of the connection pipe 300, 300 'may be bonded to the discharge port portion 111 without a separate joining process by a user. In this case, a separate valve may not be disposed in the discharge port portion 111.

At least one connection and disconnection module 400, 400 'may be configured. In this embodiment, the connection pipe opening and closing modules 400 and 400 'can press the outside of the connection pipes 300 and 300' to block the flow of the liquid at one point of the connection pipes 300 and 300 '. The connector open / close modules 400 and 400 'may form a connector insertion groove 400h. A part of the coupling pipes 300 and 300 'is inserted into the coupling pipe insertion groove 400h so that the part of the coupling pipes 300 and 300' can be in the closed state of the passage.

The filter module 500 may be disposed in the coupling tube 300, 300 '. The filter module 500 includes a filter casing 510 having both ends connected to the connection pipes 300 and 300 ', respectively. The filter casing 510 forms a passage for continuously connecting the flow paths formed by the connection pipes 300 and 300 'connected to both ends. The filter module 500 includes a filter 520 disposed in the passageway of the filter casing 510.

The patient connection modules 600 and 600 'may be connected to the flushing devices 700, 700', 700 '', 700 '' ', and 700' '' '. The patient connection modules 600 and 600 'may be releasably coupled to the flushing devices 700, 700', 700 '', 700 '' ', and 700' '' '. The liquid that has passed through the interior of the flushing device 700, 700 ', 700' ', 700' '', 700 '' '' may move into the patient connection module 600 or 600 ' have.

The patient connection module 600, 600 'may include an injection needle 610 configured to be infiltrable to the skin of the patient. The patient connection module 600, 600 'includes a scan support 620 that supports the injection needle 610.

The patient connection module 600, 600 'includes a module coupling portion 630 coupled with the downstream portion 713 of the flushing device 700, 700', 700 ", 700 '' ', 700" . The module coupling portion 630 may be detachably coupled to the replacement coupling portion 770 of the flushing device to be described later. Either the module coupling portion 630 or the replacement coupling portion 770 may form a male screw and the other may form a female screw to be engaged with the male screw. Arrows C2 in Figs. 1A and 1B show the coupling / separation direction of the module coupling portion 630 with respect to the downstream portion 713. Fig.

For example, the patient connection module 600 may be configured such that the injection needle 610, the scan support portion 620, and the module coupling portion 630 are sequentially connected. In this case, the liquid flowing out from the downstream portion 713 of the flushing apparatus 700, 700 ', 700' ', 700' '', 700 '' '' sequentially flows in the module coupling portion 630, And the injection needle 610 and into the patient's body.

In another example, the patient connection module 600 'further includes a patient connector fixation portion 650' connected to the downstream side of the module connector portion 630. The patient connection module 600 'further includes a patient connector 640' connecting the patient connector fixing portion 650 'and the scan support portion 620. The patient connector 640 'may be formed of a flexible material. The patient connection module 600 'is formed by sequentially connecting the injection needle 610, the scan support portion 620, the patient connection tube 640', the patient connection tube fixing portion 650 ', and the module coupling portion 630 . In this case, the liquid flowing out from the downstream portion 713 of the flushing apparatus 700, 700 ', 700' ', 700' '', 700 '' '' is sequentially transferred to the module connecting portion 630, The patient's connection tube 640 ', the scan support 620, and the injection needle 610 and into the patient's body. For example, the inflow part is composed of the injection needle 610 and the scan support part 620, and the remaining part is connected to the module coupling part 630, the patient connector fixing part 650 'and the patient connector 640' ).

Referring to FIGS. 1A and 1B, the flushing apparatus 700, 700 ', 700' ', 700' '', 700 '' '' includes a main body 710 forming the first flow path P1 do. The main body 710 forms the second flow path P2. Further, the main body 710 includes an upstream portion 711 forming the upstream passage portion P1a. The main body 710 includes a downstream passage portion P1b forming the downstream passage portion P1b. The main body 710 includes a flushing portion 715 forming the second flow path P2.

The flushing apparatus 700, 700 ', 700' ', 700' '', 700 '' '' includes a flushing valve unit 720 coupled to the flushing unit 715. The flushing valve unit 720 is configured to be capable of opening and closing the second flow path P2. According to an embodiment, the flushing valve unit 720 may be releasably coupled to the flushing portion 715. [

The flushing apparatus 700, 700 ', 700' ', 700' '', 700 '' '' includes a flushing port opening / closing portion 740 detachably coupled to the flushing valve unit 720. Arrows D1 in Figs. 1A and 1B show the engagement / disengagement direction of the flushing port opening / closing part 740 with respect to the flushing valve unit 720. Fig.

The flushing device 700, 700 ', 700' ', 700' '', 700 '' '' includes a replacement coupling portion 770 removably coupled to the patient connection module 600 and 600 '. The replacement engaging portion 770 is disposed at the downstream portion 713.

The flushing apparatus 700, 700 ', 700' ', 700' '', 700 '' '' may further include a downstream vent cap 780 detachably coupled to the replaceable engagement portion 770. The downstream vent cap 780 may be coupled to the replaceable engagement portion 770 interchangeably with the patient connection module 600, 600 '. Arrows C1 in Figures 1a and 1b show the engagement / disengagement direction of the downstream vent cap 780 with respect to the downstream portion 713.

Hereinafter, with reference to FIG. 1A, the dangerous chemical liquid injector 1 according to one embodiment will be described with reference to the differences from the other embodiments.

The port module 200 according to one embodiment is disposed on the connector tube 300. The port module 200 includes a first extension portion 210 connected to a downstream end of the first connection portion 310. A first port 210a is formed at the distal end of the first extension 210. The liquid in the first extension 210 can move into the first connection 310 or the liquid in the first connection 310 can move into the first extension 210 through the first port 210a. The port module 200 includes a second extension 220 connected to the upstream end of the second connection 320. And a second port 220a is formed at the end of the second extension 220. [ Through the second port 220a, the liquid in the second extension 220 can move into the second connection 320. [

The port module 200 includes an inlet 230 configured to allow liquid to flow from the outside. An inlet port 230a is formed at the end of the inlet 230. External liquid can flow into the inlet 230 through the inlet port 230a.

The port module 200 may include a swabable valve 231 disposed at the inlet port 230a. The swabble valve 231 may be configured to open the inlet port 230a when the syringe tip is pressed against the inlet port 230a.

The port module 200 includes an inlet port opening / closing portion 240 configured to be detachably coupled to the inlet portion 230. The inflow port opening / closing part 240 covers the surface of the swabble valve 231 in a state where the inflow port opening / closing part 240 is coupled to the inflow part 230, thereby improving the sanitary property of the device. Arrow E1 in FIG. 1A shows the direction of engagement / disengagement of the inlet port opening / closing portion 240 with respect to the inlet portion 230. FIG.

The connection pipe 300 according to an embodiment includes a first connection portion 310 connecting the discharge port portion 111 and the first extension portion 210 of the port module 200. The connector 300 includes a second connector 320 connecting the second extension 220 of the port module 200 and the filter module 500. The connection pipe 300 includes a third connection part 330 for connecting the filter module 500 and the upstream part 711 of the flushing device 700, 700 ', 700' ', 700' '', 700 ' ).

The connector opening and closing module 400 according to one embodiment includes a first opening and closing module 410 that can change whether one point B1 of the first connecting part 310 is open or closed. The connector open / close module 400 includes a second open / close module 420 that can change whether one end B2 of the second connector 320 is open or closed.

In the embodiment of FIG. 1A, the priming step, the chemical solution injecting step, and the flushing step will be described as follows. In the priming step according to the embodiment, the inflow port opening / closing part 240 is separated from the inflow part 230, the first connection opening / closing module 410 blocks the passage (see B1) of the first connection part 310 , The passage of the remaining part of the connection pipe 300 except for the first connection part 310 is opened. Referring to the arrows F1, F3 and F4, when the priming liquid is flowed from the outside to the inlet port 230a, the priming liquid flows into the inlet 230, the second extension 220, the second connection 330, The majority of the connection pipe 300 and the interior of the first flow path P1 are filled with the priming liquid by sequentially flowing the third connection part 330 and the first flow path P1.

In order to remove the air remaining in the second flow path P2 in the priming step, the flushing valve unit 720 is further separated from the flushing valve unit 720 and then discharged from the outside to the flushing valve unit 720 for priming Liquid can be introduced. The priming liquid flowing into the flushing valve unit 720 sequentially flows through the second flow path P2 and the downstream flow path portion P1b so that the inside of the second flow path P2 is filled with the priming liquid It is filled with liquid. In this case, the air in the second flow path P2 can be discharged to the outside through the downstream portion 713. [

In order to remove air remaining in the second flow path P2 in the priming step, a flushing vent unit 720 may be replaced with a flushing vent unit 720 in place of the flushing valve unit 720 in accordance with a fifth embodiment (see FIG. 11) A portion of the priming liquid that has flowed from the connection pipe 300 into the upstream flow path portion P1a flows into the downstream flow path portion P1b through the upstream flow path portion P1a And the other part flows to the second flow path P2 via the upstream flow path portion P1a (see arrow F6). In this case, the air in the second flow path P2 can be discharged to the outside through the flushing cap cap 730. [ This makes it unnecessary for the priming liquid to be introduced from the outside at two or more positions of the liquid medicament injecting apparatus, so that the medicinal liquid injecting apparatus can be more conveniently used by the medical staff.

In one embodiment, the chemical liquid injection step is performed after the priming step. In the chemical solution injecting step according to the embodiment, the inlet port opening / closing part 240 is separated from the inlet part 230, the second connection pipe opening / closing module 420 blocks the passage of the second connection part 320, The connector opening / closing module 410 is separated from the first connecting portion 310 to open the first connecting portion 310. [ Further, the flushing port opening / closing unit 740 is coupled to the flushing valve unit 720 to block the flushing port 715a. The dangerous liquid medicine flows into the first connection part 310 through the inflow part 230 and the first extension part 210 when the dangerous liquid medicine is introduced into the inflow port 230a from the outside with reference to the arrow F0. As the dangerous chemical liquid flows into the chamber 110 from the first connection part 310, the pressing surface 122 moves in the direction Ap2. Thereafter, the inflow port opening / closing part 240 is coupled to the inflow part 230 to block the inflow port 230a, the second connection pipe opening / closing module 420 is separated from the second connection part 320, ) To an open state. The pressure applying surface 122 is moved in the pressing direction Ap1 with reference to the arrows F2, F3 and F4 so that the dangerous chemical liquid flows through the connecting pipe 300, the flushing devices 700, 700 ', 700' '' ', 700' '' ') and the patient connection module 600, 600', and then flows into the patient's body.

In one embodiment, the flushing step is performed after the chemical liquid injection step. In the flushing step according to the embodiment, after the flushing port opening and closing part 740 is separated from the flushing valve unit 720, the flushing liquid can be introduced into the flushing valve unit 720 from the outside. The flushing liquid flowing into the flushing valve unit 720 sequentially flows through the second flow path P2, the downstream flow path portion P1b and the patient connection modules 600 and 600 'with reference to the arrow F5, When the flushing liquid starts to flow into the body, the flushing step ends.

Hereinafter, with reference to FIG. 1B, a description will be given of a dangerous chemical liquid injecting apparatus 1 'according to another embodiment with reference to a difference from the embodiment. The port module 200 'according to another embodiment is disposed on the outer surface of the chamber 110. The port module 200 'forms a passage connecting the outside of the chamber 110 and the inner space. The port module 200 'is configured such that liquid can flow into the interior space of the chamber 110 through the port module 200'.

The port module 200 'includes an inlet 230' configured to allow liquid to flow from the outside. An inlet port 230a 'is formed at the end of the inlet 230'. External liquid can flow into the inlet 230 'through the inlet port 230a'.

The port module 200 'may include a swivel valve 231' disposed at the inlet port 230a '. The port module 200 'includes an inlet port opening / closing portion 240' that is detachably coupled to the inlet portion 230 '. Arrow E1 'in FIG. 1A shows the direction of engagement / disengagement of the inlet port opening / closing portion 240' with respect to the inlet portion 230 '.

The connection pipe 300 'according to another embodiment includes a filter upstream connection portion 315' connecting the discharge port portion 111 and the filter module 500. The connector 300 'includes a filter downstream connection 330 connecting the filter module 500 and the upstream portion 711 of the flushing device.

The connection pipe opening / closing module 400 'according to another embodiment can change whether the one point B1' of the filter upstream connection portion 315 'is open or closed.

In another embodiment, referring to FIG. 1B, the priming step and the chemical solution injecting step will be described as follows. The flushing step of the other embodiment is the same as that of the above embodiment, and the description thereof will be omitted. In the priming step according to another embodiment, the inflow port switching part 240 'is separated from the inflow part 230', and the connection pipe opening / closing module 400 connects the passage B1 'of the filter upstream connection part 315' . Referring to the arrow F0 ', when the priming liquid is introduced from the outside into the inlet port 230a', the priming liquid flows into the chamber 110 through the inlet 230 ' The pressing surface 122 moves in the opposite direction Ap2. Thereafter, the inflow port switching part 240 'is coupled to the inflow part 230' to block the inflow port 230a ', and the connection pipe opening / closing module 400 is separated from the filter upstream connection part 315' (300) to an open state. Referring to the arrows F2, F3 and F4, the pressing surface 122 is then moved in the pressing direction Ap1 so that the priming liquid passes through the discharge port portion 111, the filter upstream connecting portion 315 ' The interior of the connection pipe 300 'and the first flow path P1 is filled with the priming liquid by sequentially flowing the connection part 330 and the first flow path P1. In addition, the configuration / method of removing air in the second flow path P2 in the priming step is the same as that in the first embodiment, and a description thereof will be omitted.

In another embodiment, the chemical liquid injection step is performed after the priming step. In the chemical solution injecting step according to another embodiment, the inlet port opening / closing part 240 'is separated from the inlet part 230', and the connection pipe opening / closing module 400 blocks the passage of the filter upstream connection part 315 '. When the dangerous chemical solution flows into the inlet port 230a 'from the outside with reference to the arrow F0', the dangerous chemical liquid flows into the chamber 110 through the inlet 230 ' 122 move in the opposite direction Ap2. Thereafter, the inflow port switching part 240 'is coupled to the inflow part 230' to block the inflow port 230a ', and the connection pipe opening / closing module 400 is separated from the filter upstream connection part 315' (300) to an open state. The pressure applying surface 122 is moved in the pressing direction Ap1 with reference to the arrows F2, F3 and F4 so that the dangerous chemical liquid flows through the connecting pipe 300 ', the flushing apparatuses 700, 700', 700 ' 700 '' ', 700' '' ') and the patient connection module 600, 600', and then flows into the patient's body.

Hereinafter, with reference to FIGS. 2 to 4, the flushing apparatus 700 according to the first embodiment of the present disclosure will be described in more detail as follows.

The flushing apparatus 700 forms a predetermined flow path P therein. The flow path P includes a first flow path P1 connecting the upstream ends of the connection tubes 300 and 300 'and the upstream ends of the patient connection modules 600 and 600'. The first flow path may be formed in a straight line.

The first flow path P1 includes an upstream flow path portion P1a disposed on the upstream side with respect to the connection point P1F and a downstream flow path portion P1b disposed on the downstream side. The upstream flow path portion P1a is a part of the first flow path P1. The downstream flow path portion P1b is a part of the first flow path P1. The upstream passage portion P1a connects from the upstream end of the first flow path P1 to the connection point P1F. The downstream flow path portion P1b connects from the connection point P1F to the downstream end of the first flow path P1. The upstream passage portion P1a may be formed longer than the downstream passage portion P1b.

The flow path P includes a second flow path P2 to which one end is connected at the connection point P1F of the first flow path P1. The second flow path P2 connects the connection point P1F with a flushing port 715a to be described later. The second flow path P2 may extend in a direction away from the first flow path P1.

 As a part of the first flow path P1, the regulating flow path P1a1 is constituted. The upstream flow path portion P1a includes an adjustment flow path P1a1. The control flow path P1a1 is formed by the flow rate reducing section 760. [ The control flow path P1a1 performs a function of raising the fluid resistance so as to reduce the flow rate of the liquid flowing therein. The control flow path P1a1 is relatively small in cross-sectional area as compared with other portions of the first flow path P1.

The connecting passage P1a2 is formed as another portion of the first flow path P1. The upstream flow path portion P1a includes a connection flow path P1a2. The connection passage P1a2 connects from the downstream end P1E of the flow rate reduction section 760 to the connection point P1F. The downstream end P1E of the regulating passage P1a1 is the upstream end of the connecting passage P1a2. The connecting passage P1a2 is formed by the joint part 710A.

The inflow path P1a3 may be constituted as another part of the first flow path P1. The upstream passage portion P1a includes the inflow passage P1a3. The inflow path P1a3 is connected from the upstream port 711a to the upstream end of the control flow path P1a1. The upstream end of the inflow passage P1a3 forms the upstream port 711a. The inflow passage P1a3 may be formed by the cover part 710B. Although not shown, in another example, the upstream end of the regulating passage P1a1 may form the upstream port 711a without a separate inflow passage P1a3.

The main body 710 includes a joint part 710A forming at least the connection passage P1a2. The joint part 710A can form the downstream flow path portion P1b. The joint part 710A may form at least a part of the second flow path P2. The joint part 710A forms a part of the upstream part 711. [

The joint part 710A is integrally formed. The joint part 710A is a single part. For example, the joint part 710A is integrally formed by injection. The joint part 710A is formed not to be detachable unless it is broken. Accordingly, when the flushing apparatus 700 is discarded after the flushing step, the user may accidentally remove the joint part 710A, thereby reducing the risk of occurrence of a dangerous situation in which the dangerous chemical liquid in the inside is exposed to the outside. In addition, if the joint part 710A is a part to be assembled, the impurities can be introduced into the first flow path P1. Since the joint part 710A is integrally formed, a more hygienic flushing device 700 can be realized have.

The connection passage P1a2 may be shorter than the downstream passage portion P1b. Thus, the material cost of the integrally formed joint part 710A can be reduced. In addition, by reducing the amount of the hazardous chemical solution filled in the connection passage P1a2 in the flushing step, the amount of the dangerous chemical solution unnecessarily wasted when injecting the dangerous chemical solution into the patient as much as possible can be reduced .

The main body 710 includes a cover part 710B coupled to the joint part 710A. The downstream portion of the cover part 710B is inserted into the joint part 710A. One of the joint part 710A and the cover part 710B includes a coupling part 710A1 protruding in the other direction and the other is a coupling corresponding part 710B1 in which the coupling part 710A1 is hooked . In this embodiment, a hook-shaped engaging portion 710A1 is formed in the joint part 710A and a groove-like engaging portion 710B1 is formed in which the engaging portion 710A1 is engaged with the cover part 710B.

The cover part 710B accommodates the flow rate reducing part 760 together with the joint part 710A. The joint part 710A supports the downstream end of the flow rate reduction part 760. [ The joint part 710A may include a first seating part 710A2 that forms a step where the downstream end of the flow rate reduction part 760 is hooked. The cover part 710B supports the upstream end of the flow rate reducing part 760. [ The cover part 710B may include a second seating part 710B2 that forms a step to which the upstream end of the flow rate reducing part 760 is caught.

The cover part 710B forms the upstream port 711a. The cover part 710B can form the inflow passage P1a3. The cover part 710B forms a part of the upstream part 711. [ The cover part 710B is integrally formed.

The upstream portion 711 forms an upstream portion of the connection point P1F among the first flow paths P1. The upstream portion 711 is formed by the joint part 710A and the cover part 710B. The upstream portion 711 forms an upstream port 711a through which the liquid flows from the coupling tubes 300 and 300 '.

The downstream portion 713 forms a portion of the first flow path P1 downstream of the connection point P1F. The downstream portion 713 is formed by the joint part 710A. The downstream portion 713 forms a downstream port 713a through which the liquid flows from the first flow path P1 to the downstream side.

The downstream portion 713 includes an engagement portion 713b that prevents the replacement engaging portion 770 from being detached from the downstream portion 713. [ The latching portion 713b may protrude from the outer surface of the downstream portion 713. [ The upstream side surface of the engaging portion 713b comes into contact with a part of the replacement engaging portion 770 to limit the range of movement of the replacement engaging portion 770 in the downstream direction.

The flushing portion 715 forms the second flow path P2. At least a portion of the flushing portion 715 is formed by the joint part 710A. The flushing portion 715 forms a flushing port 715a for introducing the liquid for flushing into the second flow path P2.

The flow rate reduction section 760 is configured to reduce the flow rate of the dangerous chemical liquid flowing in the first flow path P1. The flow rate of the liquid flowing through the first flow path P1 when the other conditions are the same is smaller than that of the flushing apparatus in the assumed state in which the flow rate reducing section 760 is not provided, (700). Although not shown, the flow rate reduction unit implemented by a user to change the flow rate may be implemented.

The flow rate reduction portion 760 is disposed on the upstream side of the connection point P1F in the first flow path P1. The downstream end of the flow rate reduction portion 760 is inserted into the joint part 710A. The upstream end of the flow rate reduction portion 760 is inserted into the cover part 710B.

In this embodiment, the flow rate reduction unit 760 includes an adjustment flow path forming unit 761 for forming the adjustment flow path P1a1. The flow rate reducing portion 760 includes a sealing portion 762 disposed between the outer peripheral surface of the control flow path forming portion 761 and the inner peripheral portion of the main body 710. The flow rate reduction portion 760 may include a spacer 763 disposed at the end of the adjustment flow path forming portion 761. The flow rate reduction portion 760 may include a first spacer 763a disposed between the upstream end of the control flow path forming portion 761 and the second seating portion 710B2. The flow rate reduction portion 760 may include a second spacer 763b disposed between the downstream end of the control flow path forming portion 761 and the first seating portion 710A2. Although not shown, the flow rate reduction unit 760 may further include a filter unit (not shown) disposed at the upstream end of the control flow path P1a1.

The replacement engaging portion 770 is disposed at the downstream portion 713. The replacement coupling portion 770 is detachably coupled to the patient connection module 600, 600 '. The replacement engaging portion 770 may be releasably coupled to the downstream vent cap 780, which will be described later.

The replacement engaging portion 770 may be formed so as to surround the outer peripheral portion of the downstream portion 713. The inner circumferential portion of the replacement engaging portion 770 faces the outer circumferential portion of the downstream portion 713.

The replacement engaging portion 770 may include a screw corresponding portion 771 for engaging with the patient connecting module 600, 600 '. The screw corresponding portion 771 may be configured to be coupled to the downstream vent cap 780. The screw corresponding portion 771 may be disposed at the inner circumferential portion of the replaceable engaging portion 770.

The replaceable engaging portion 770 may include an engaging portion 772 configured to engage with the engaging portion 713b. The engaging portion 772 may be disposed on the upstream side of the replaceable engaging portion 770. The engaging portion 772 protrudes from the inner peripheral portion of the replacement engaging portion 770 toward the outer peripheral portion of the downstream portion 713. [

The backflow prevention portion 750 prevents the backflow of the flushing liquid in the direction of the flushing port in the second flow path P2. The backflow prevention part 750 functions as a one-way valve. The backflow prevention portion 750 permits the flow of liquid (inflow flow) that moves from the inside of the second flow path P2 into the first flow path P1, while allowing the flow of the liquid from the inside of the first flow path P1 to the second flow path P2, Thereby blocking the flow of the liquid (flow-out)

For example, in a state where the flushing valve unit 720 is separated from the flushing part 715, the backflow prevention part 750 can be implemented to be coupled to and detachable from the flushing part 715. The backflow prevention portion 750 is coupled to the flushing valve unit 720 so that the backflow prevention portion 750 is separated from the flushing portion 715 when the flushing valve unit 720 is separated from the flushing portion 715, And may be implemented to be separated from the flushing portion 715.

The backflow prevention portion 750 includes a protrusion 751 protruding in the direction F5 of the inflow flow. The protrusion 751 is formed of a flexible material.

A hole 751a is formed at the protruding end of the protrusion 751. The hole 751a is formed for the flushing liquid to pass through. The hole 751a is opened or closed according to the flow direction of the liquid in the second flow path P2. The hole 751a of the protrusion 751 is opened when the liquid in the second flow path P2 flows in the direction of the inflow flow F5. (See FIG. 3), the hole 751a of the protrusion 751 is closed when there is no flow of the liquid in the second flow path P2 or when the liquid is going to flow in the outflow direction F6.

The backflow prevention portion 750 includes a seat portion 753 that is seated on the flushing portion 715. The seat portion 753 can be seated in the edge portion of the flushing port 715a. The seating portion 753 supports the projection 751. The center of the seating portion 753 forms a hole and the liquid can move to the hole 751a of the projection 751 through the hole of the seating portion 753. [

For example, the protrusion 751 may be formed in a conical shape as a whole, so that the vertex portion protrudes. In this case, the hole 751a is formed in the vertex portion of the protrusion 751.

As another example, the protruding portion 751 may include a first oblique surface that inclines and extends with respect to the protruding direction, a second oblique surface that inclines and extends in a direction opposite to the first oblique direction with respect to the protruding direction, And both side surfaces covering both sides of the oblique side. 6 and 9). In this case, the first oblique face and the second oblique face meet at the protruding end of the protruding portion 751, and the hole 751a extends along the edge . When the liquid in the second flow path P2 flows in the direction of the inflow flow F5, the protruding end of the first oblique surface and the protruding end of the second oblique surface are bent in directions opposite to each other, It opens.

The flushing valve unit 720 is coupled to the flushing portion 715. The flushing valve unit 720 may be further coupled to the flushing port 715a. The flushing liquid may flow into the second flow path P2 sequentially from the outside through the flushing valve unit 720 and the flushing port 715a.

The flushing valve unit 720 includes a flushing valve 722 for changing whether the flushing liquid is opened or closed. The flushing valve unit 720 includes a valve casing 721 that supports the flushing valve 722. [ The flushing valve unit 720 may include a swabable valve.

The flushing valve 722 includes a surface 722a that forms a hole 722h that is opened when pressed from the outside. 3). The flushing valve 722 is formed of a flexible material. When the tip of the syringe J is pressed against the surface 722a from the outside, the surface 722a is bent and the hole 722h is opened.

The flushing port opening / closing part 740 opens / closes the surface 722a from outside. The flushing port opening and closing part 740 covers the surface 722a in a state of being engaged with the flushing valve unit 720. [ The surface 722a is exposed to the outside in a state where the flushing port opening and closing part 740 is separated from the flushing valve unit 720. [ With the surface 722a exposed to the outside, the user can clean the surface 722a. According to an embodiment, the flushing port opening and closing part 740 may have a function of disinfecting the surface 722a while being coupled with the flushing valve unit 720. [

The flushing valve 722 includes an exposed portion 722b which forms the surface 722a on one side. The hole 722h penetrates through the exposed portion 722b. The flushing liquid that has passed through the exposed portion 722b from the outside can be moved to the flushing port 715a.

The flushing valve 722 includes a tube portion 722c that supports the exposed portion 722b. The tube portion 722c forms an inner space and is formed in a tubular shape. The periphery of the exposed portion 722b is fixed to one end of the tube portion 722c, and the other end forms a boundary of the opening at the center.

The valve casing 721 receives the flushing valve 722 therein. The valve casing 721 forms an opening for exposing the surface 722a at one end. The other end of the valve casing 721 is coupled to the flushing portion 715. The valve casing 721 includes a unit engaging portion 721b which is engaged with the flushing portion 715.

The valve casing 721 includes a pressing portion 721a for fixing the backflow prevention portion 750 in a state of being engaged with the flushing portion 715. The pressing portion 721a presses the seating portion 753. The seat portion 753 is held between the pressing portion 721a and the flushing portion 715 and fixed.

The downstream vent cap 780 is detachably coupled to the replaceable engagement portion 770 instead of the patient connection module 600, 600 '. The downstream vent cap 780 is coupled to the replacement engagement portion 770 before the start of the priming step. The downstream vent cap 780 before the chemical liquid injection step can be separated from the replacement engagement portion 770. Only the downstream vent cap 780 is shown in FIGS. 1A-3, and the illustration of the downstream vent cap 780 is omitted in the other figures to avoid redundancy.

The downstream vent cap 780 discharges the gas and blocks the discharge of the priming liquid when the priming liquid flows along the downstream portion 713 from the connection point P1F in the first flow path P1.

The downstream vent cap 780 includes a vent filter 781 that prevents passage of the priming liquid and allows passage of gas. Vent filter 781 may comprise a hydrophobic filter.

The downstream vent cap 780 may include a sponge 782 disposed upstream of the vent filter 781. The downstream end of the sponge 782 is in contact with the vent filter 781. The sponge 782 assists in passing the gas while absorbing the priming liquid.

The downstream vent cap 780 includes a downstream vent casing 783 that receives the vent filter 781 therein. The downstream vent casing 783 receives the sponge 782 therein. The downstream vent casing 783 forms a vent hole 783a through which the gas passes. The vent hole 783a is disposed on the downstream side of the vent filter 781. [ The gas in the first flow path P1 flows out of the first flow path P1 sequentially through the sponge 782, the vent filter 781 and the vent hole 783a.

The downstream vent cap 780 includes a downstream vent cap engaging portion 784 coupled with the replaceable engagement portion 770. The downstream vent cap coupling portion 784 may be formed in a cylindrical shape. The downstream vent cap engaging portion 784 is connected to the upstream side of the downstream vent casing 783.

A screw 785 may be formed on the outer peripheral portion of the downstream vent cap coupling portion 784. The screw 785 is formed to engage with the screw corresponding portion 771 of the replacement engaging portion 770.

The description of the flushing apparatus 700 according to the first embodiment described above with reference to Figs. 2 to 4 will be given to flushing apparatus 700 'according to the second to fifth embodiments described later with reference to Figs. 5 to 11, , 700 '', 700 '' ', 700' '' ').

2 to 4, the flushing apparatus 700 according to the first embodiment is a flushing apparatus that forms a second flow path P2, for example, at an acute angle with respect to the first flow path P1, (715). The second flow path P2 extends from the connection point P1F in the direction between the downstream direction of the first flow path P1 and the direction perpendicular to the first flow path P1.

In the first embodiment, the flushing portion 715 includes a flushing joint portion 715b that forms a portion connected to the second flow path P2 and the first flow path P1. The flushing joint portion 715b is formed by the joint part 710A. The flushing portion 715 forms the flushing port 715a. The flushing portion 715 includes a flushing seat portion 715c to which the flushing valve unit 720 is coupled around the flushing port 715a. The unit coupling portion 721b and the flushing seat portion 715c can be coupled to each other. And the backflow prevention part 750 may be disposed in the flushing port 715a.

Referring to FIGS. 5 and 6, a flushing apparatus 700 'according to a second embodiment will now be described, focusing on differences from the first embodiment. In the second embodiment, the flushing portion 715 further includes an extension pipe 715d made of a flexible material. The flushing portion 715 includes a flushing joint portion 715b that forms a part of the second flow path P2 extending in the direction between the downstream direction of the first flow path P1 and the vertical direction of the first flow path P1, . The extension pipe 715d connects the flushing joint portion 715b and the flushing port 715a. The extension pipe 715d forms a part of the second flow path P2. The flushing liquid flows into the first flow path P1 sequentially from the outside through the flushing port 715a, the extension pipe 715d and the flushing joint portion 715b. It is possible to freely flex the extension pipe 715d according to the posture when the user injects the flushing liquid, which is convenient.

Hereinafter, the flushing apparatus 700 '' according to the third embodiment will be described with reference to FIGS. 7 to 9, focusing on differences from the first embodiment. The flushing apparatus 700 "according to the third embodiment includes a flushing unit 715 forming a second flow path P2 perpendicular to the first flow path P1. The second flow path P2 can extend from the connection point P1F in the vertical direction of the first flow path P1.

In the third embodiment, at least a part of the backflow prevention part 750 is disposed at the connection point P1F. The protrusion 751 of the backflow prevention portion 750 protrudes into the first flow path P1 from the second flow path P2. The hole 751h of the protrusion 751 is disposed in the first flow path P1. In the direction of the inflow flow in the second flow path P2, the backflow prevention part 750 is disposed at the downstream end of the second flow path P2. There is no downstream portion with respect to the backflow prevention portion 750 of the second flow path P2. Accordingly, when the priming liquid flowing into the first flow path P1 from the connection pipe 300 or 300 'in the priming step fills the first flow path P1, bubbles in the second flow path P2 are separately removed It is convenient for the medical staff because the operation within the priming step is unnecessary. This is because there is no downstream portion of the second flow path P2 on the basis of the backflow prevention portion 750 and the airflow in the upstream portion of the second flow path P2 with respect to the backflow prevention portion 750, The air does not flow into the first flow path P1.

The description of the flushing apparatus 700 '' according to the third embodiment described above with reference to Figs. 7 to 9 is also applicable to the flushing apparatus 700 '' 'according to the fourth embodiment to be described later with reference to Fig. 10 .

Hereinafter, with reference to FIG. 10, the flushing apparatus 700 '' 'according to the fourth embodiment will be further described, focusing on differences from the third embodiment. The flushing apparatus 700 '' 'according to the fourth embodiment includes a flushing unit 715' '' configured to be able to engage with the flushing port opening / closing unit 740 without engaging with the flushing valve unit 720. The flushing port opening / closing part 740 according to the fourth embodiment need not have a function of disinfecting the surface 722a. The flushing portion 715 '' 'may include a flushing engagement portion 715g' '' coupled to the joint portion 710A. The flushing portion 715 '' 'includes a pressing portion 715f' '' for pressing and fixing the seating portion 753 of the backflow prevention portion 750. The flushing portion 715 '' 'includes an opening / closing portion 715h' '' which is detachably coupled to the flushing port opening / closing portion 740. The open / close coupling portion 715h '' 'forms a passage which is connected to the second flow path P2. A flushing port 715a is formed at the upstream end of the opening / closing part 715h '' 'with reference to the direction of the flow of the flushing liquid. The backflow prevention portion 750 is disposed at the downstream end of the flushing portion 715. The flushing port opening / closing part 740 is coupled to or separated from the flushing part 715 to open / close the flushing port 715a.

Hereinafter, referring to Fig. 11, a flushing apparatus 700 '' '' according to the fifth embodiment will be described, focusing on differences from the first embodiment. The flushing apparatus 700 '' '' according to the fifth embodiment further includes a flushing vent cap 730 detachably coupled to the flushing unit 715. The flushing valve unit 720 may be configured to be coupled to the flushing portion 715 to be replaceable with the flushing vent cap 730. The flushing vent cap 730 is coupled to the flushing portion 715 before the start of the priming step. At this time, the flushing vent cap 730 is coupled to the flushing part 715 in a state where the flushing valve unit 720 and the backflow prevention part 750 are not coupled to the flushing part 715. The flushing vent cap 730 may be separated from the flushing portion 715 and the flushing valve unit 720 may be coupled to the flushing portion 715. [

When the priming liquid flows in the direction of the flushing port in the second flow path P2, the flushing vent cap 730 discharges the gas and blocks the discharge of the priming liquid. The flushing vent cap 730 includes a vent filter 731 that blocks the passage of the priming liquid and allows passage of gas. The vent filter 731 may comprise a hydrophobic filter.

The downstream vent cap 780 may include a sponge 732 disposed upstream of the vent filter 731. The downstream end of the sponge 732 is in contact with the vent filter 731. Sponge 732 assists passage of gas while absorbing the priming liquid.

The downstream vent cap 780 includes a flushing vent casing 733 for receiving a vent filter 731 therein. The flushing vent casing 733 receives the sponge 732 therein. The flushing vent casing 733 forms a vent hole 733a through which the gas passes. The vent hole 733a is disposed on the downstream side of the vent filter 731. [ The gas in the second flow path P2 sequentially flows out of the second flow path P2 via the sponge 732, the vent filter 731 and the vent hole 733a.

The downstream vent cap 780 also includes a flushing vent cap engagement portion 734 coupled with the flushing portion 715. The flushing vent cap engaging portion 734 may be formed in a cylindrical shape. The flushing vent cap coupling portion 734 is connected to the downstream side of the flushing vent casing 733 based on the direction of the inflow flow of the flushing liquid. A screw (not shown) may be formed in the flushing vent cap engaging portion 734. The screw of the flushing cap cap 730 is formed to engage with the corresponding portion of the flushing portion 715.

Although the technical idea of the present disclosure has been described above by way of some embodiments and examples shown in the accompanying drawings, it is to be understood that the present invention is not limited to the above- It should be understood that various substitutions, changes, and alterations can be made therein without departing from the scope of the invention. It is also to be understood that such substitutions, modifications and variations are intended to be included within the scope of the appended claims.

Claims (15)

A connection pipe for guiding the hazardous chemical solution harmful to the human body when exposed to the outside air and a patient connection module for injecting the dangerous chemical into the patient are connected to the patient connection module, A main body having a flushing portion forming a first flow path and forming a second flow path connected to a predetermined connection point located between both ends of the first flow path; And And a flow rate reducing section that is disposed on an upstream side of the connection point in the first flow path and configured to reduce a flow rate of the hazardous liquid flowing in the first flow path. The method according to claim 1, Wherein the main body includes a joint part integrally formed therewith, Wherein the joint part forms a connection flow path which is a part of the first flow path connecting the downstream end of the flow rate reduction part to the connection point. 3. The method of claim 2, Wherein the main body includes a cover part coupled to the joint part to receive the flow rate reduction part together with the joint part. 3. The method of claim 2, Wherein the connecting flow path is shorter than the downstream flow path portion which is a part of the first flow path connecting from the connection point to the downstream end of the first flow path. The method according to claim 1, Wherein the flushing portion forms a flushing port for introducing the flushing liquid into the second flow path. 6. The method of claim 5, Further comprising a backflow prevention portion for preventing backflow of the flushing liquid in the direction of the flushing port in the second flow path. The method according to claim 6, And at least a part of the backflow prevention portion is disposed at the connection point. 8. The method of claim 7, Wherein the backflow prevention portion includes a protrusion protruding from the second flow path into the first flow path, And a hole through which the liquid for flushing passes is formed at an end of the projecting portion. The method according to claim 6, Further comprising a flushing valve unit coupled to the flushing portion, the flushing valve unit including a surface defining a hole that is opened when pressed from the outside. 6. The method of claim 5, Further comprising a flushing cap cap detachably coupled to the flushing portion and configured to discharge the gas when the priming liquid flows in the direction of the flushing port in the second flow path and shut off the discharge of the priming liquid. Flushing device for injection. 11. The method of claim 10, Further comprising a flushing valve unit configured to be coupled to the flushing portion to be replaceable with the flushing vent cap, the flushing valve unit including a surface forming a hole that is opened when pressed from the outside. The method according to claim 1, Wherein the main body includes a downstream portion that forms a downstream portion of the connection point in the first flow path, A replacement coupling portion disposed at the downstream portion and detachably coupled to the patient connection module; And Wherein when the priming liquid flows along the downstream portion from the connection point in the first flow path, the gas is discharged and the discharge of the priming liquid is blocked Further comprising a downstream vent cap. 1. A dangerous chemical liquid injecting apparatus for injecting a dangerous chemical liquid which is harmful to a human body when exposed to outside air, A pumping module configured to pressurize the hazardous liquid; A connection pipe through which the dangerous chemical liquid flowing out from the pumping module flows according to the pressure in the pumping module; And And a flushing device configured to connect the connection tube and a patient connection module for injecting the hazardous liquid into the patient, Wherein the flushing device comprises: A first flow path for guiding the dangerous chemical liquid flowing out from the connection pipe to the patient connection module and a flushing part for forming a second flow path connected to a predetermined connection point located between both ends of the first flow path Main body; And And a flow rate reducing section that is disposed on an upstream side of a connection point of the second flow path in the first flow path and configured to reduce a flow rate of the hazardous liquid flowing in the first flow path. 14. The method of claim 13, Wherein the main body includes a joint part integrally formed therewith, Wherein the joint part forms a connection flow path which is a part of the first flow path connecting the downstream end of the flow rate reduction part to the connection point. 14. The method of claim 13, Wherein the pumping module comprises a chamber configured to receive the hazardous chemical liquid, Further comprising a port module connected to the connector or the chamber, the port module being configured to be able to fill the liquid into the chamber.

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