WO2019140549A1 - Sampling needle cleaning device - Google Patents

Abstract

A sampling needle cleaning device comprises a cleaning cavity (10, 10a), a cavity cover (20, 20a) arranged at one end of the cleaning cavity (10, 10a), and a connector (30, 30a). The cavity cover (20, 20a) is provided with a through slot (21) and a spraying hole (22) communicating with the through slot (21). A first flow passage (11, 11a) is arranged in the cleaning cavity (10, 10a). The first flow passage (11, 11a) communicates with the through slot (21) and is configured in the shape of a long, thin column. An end of the cleaning cavity (10, 10a) away from the cavity cover (20, 20a) is provided with an accommodation slot (14). The connector (30, 30a) is detachably mounted in the accommodation slot (14). A second flow passage (31, 31a) is provided in the connector (30, 30a). The second flow passage (31, 31a) is opposite to and communicates with the first flow passage (11, 11a). In the sampling needle cleaning device, the connector (30, 30a) is detachably connected to the cleaning cavity (10, 10a), the first flow passage (11, 11a) and the second flow passage (31, 31a) are separately and easily machined, thereby solving the problem that machining of a cleaning flow passage of a conventional cleaning device is problematic due to variable diameters and the thinness of the passage. The invention allows the first flow passage (11, 11a) and the second flow passage (31, 31a) to be respectively mated with a main body portion (101) and a needle tip portion (102) of the sampling needle (100), thereby effectively cleaning the sampling needle (100).

Description

Sampling needle cleaning device Technical field

The present invention relates to the field of medical device technology, and in particular to a sampling needle cleaning device.

Background technique

In the automatic immunoassay analyzer, in order to improve the accuracy and precision of the analysis results, the inner and outer walls of the needle need to be thoroughly cleaned after each sampling to minimize the influence of the contamination of the sampling needle on the test results. . In addition, when the needle is used to take the reagent from the reagent container having the puncture film at the mouth of the reagent container, the length of the needle that may be contaminated is increased, and the sampling needle is not only the most polluted needle tip portion under the liquid surface but also needs to be cleaned and sampled. It is also necessary to clean the portion of the needle tip that is in contact with the puncture film, and the cleaning length is long.

A conventional cleaning device uses a reduced-diameter cleaning flow path to spray-clean the sampling needle. However, since the cleaning flow path is elongated and has a variable diameter, the cleaning flow path is difficult to process; in addition, the flow path matches the sampling needle. The degree is low and it is difficult to ensure that the needle is effectively cleaned.

Summary of the invention

Based on this, it is necessary to solve the problem of the cleaning flow path of the prior art cleaning device, and the matching degree between the flow channel and the sampling needle is low, and it is difficult to ensure that the sampling needle is effectively cleaned, and a sampling needle cleaning device is provided.

A sampling needle cleaning device includes a cleaning pool, a pool cover disposed at one end of the cleaning pool, and a joint; the pool cover is provided with a through groove and a spray hole communicating with the through groove; the cleaning pool is provided There is a first flow channel, the first flow channel is in communication with the through groove; the first flow channel is disposed in an elongated column shape; the end of the cleaning pool away from the water pool cover is provided with a receiving groove, and the joint is detachably mounted A second flow passage is disposed in the joint in the receiving groove, and the second flow passage is in communication with the first flow passage.

The sampling needle cleaning device can be detachably connected to the cleaning pool provided with the first flow channel by the joint provided with the second flow channel, and the joint of the second flow channel corresponding to the size and shape can be replaced according to the size and shape of the sampling needle, and the joint is not required. Replacing the entire cleaning device is beneficial to improving the applicability of the sampling needle cleaning device and reducing the production cost; the first flow path and the second flow path are separately processed and processed easily, thereby effectively solving the cleaning path of the conventional cleaning device due to the variable diameter and The slender process causes difficulty in processing; the first flow path and the second flow path are separately processed, which is advantageous for improving the processing precision of the first flow path and the second flow path, that is, increasing the first flow path and the second flow path respectively with the main body of the sampling needle The matching degree between the part and the tip of the needle, the sampling needle is effectively cleaned, thereby improving the accuracy of the sampling result of the sampling needle.

In one embodiment, the cleaning pool is provided with an internal thread portion corresponding to the inner wall of the receiving groove, the outer peripheral wall of the joint has an external thread portion, and the joint is matched with the internal thread portion by the external thread portion A screw is installed in the receiving groove.

In one embodiment, one end of the cleaning pool is provided with a mounting hole, and the mounting hole is in communication with the first flow channel, and one end of the cleaning pool corresponding to the mounting hole is provided with a liquid inlet, the pool cover is detachable Installed in the mounting hole, the other end of the shower hole is in communication with the liquid inlet.

In one embodiment, the two ends of the corresponding annular groove of the pool cover are also sleeved with a sealing ring, and the sealing ring is in close contact with the inner wall of the mounting hole.

In one embodiment, the end of the shower hole communicating with the liquid inlet is higher than the end of the shower hole that communicates with the channel.

In one embodiment, the pool cover is provided with an annular groove, and the annular groove is respectively connected with the liquid inlet and the spray hole, and the number of the spray holes is plural, and the plurality of sprays The shower holes are circumferentially spaced around the pool cover.

In one embodiment, the second flow channel has an inverted cone shape, and a cross-sectional area of the end of the second flow channel corresponding to the first flow channel is equal to a cross-sectional area of the first flow channel, A cross-sectional area of the second flow path away from one end of the first flow path is smaller than a cross-sectional area of the first flow path.

In one embodiment, the second flow passage is disposed in a column shape, and a cross-sectional area of the second flow passage is smaller than a cross-sectional area of the first flow passage.

In one embodiment, the end of the joint corresponding to the first flow passage is mounted with a seal ring that is in close contact with the bottom wall of the receiving groove.

In one embodiment, the joint is further provided with a drain passage communicating with the second flow passage, and one end of the joint corresponding to the drain passage is a barb portion.

DRAWINGS

1 is an assembled view of a sampling needle cleaning device according to a first embodiment of the present invention;

Figure 2 is an exploded view of the sampling needle cleaning device of Figure 1;

Figure 3 is an assembled view of a sampling needle cleaning device in accordance with a second embodiment of the present invention.

The meaning of each label in the drawing is:

Sampling needle 100, main body portion 101, needle tip portion 102;

Cleaning tank 10, first flow path 11, mounting hole 12, liquid inlet 13, receiving groove 14, internal thread portion 15;

Pool cover 20, through slot 21, spray hole 22, annular groove 23, sealing ring 24;

Joint 30, second flow path 31, external thread portion 32, sealing ring 33, snap portion 34, drain channel 35, barb portion 36;

The cleaning tank 10a, the first flow path 11a, the pool cover 20a, the joint 30a, and the second flow path 31a.

Detailed ways

In order to facilitate the understanding of the present invention, the present invention will be described more fully hereinafter. However, the invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the understanding of the present disclosure will be more fully understood.

All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. The terminology used in the description of the present invention is for the purpose of describing particular embodiments and is not intended to limit the invention.

It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or the element can be present. When an element is considered to be "connected" to another element, it can be directly connected to the other element or. In contrast, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical," "horizontal," "left," "right," and the like, as used herein, are for illustrative purposes only.

Referring to FIG. 1 and FIG. 2, a sampling needle cleaning device according to a first embodiment of the present invention is used for cleaning a sampling needle 100. The sampling needle 100 includes a main body portion 101 and a needle tip portion 102. The sampling needle 100 usually has a variable diameter region. That is, the needle tip portion 102 is generally a contraction taper having a diameter that gradually decreases from the direction of the main body portion 102 or a column shape having a smaller diameter than the main body portion 102. The sample needle cleaning device includes a cleaning tank 10 and a pool cover disposed at one end of the cleaning tank 10. 20, and connector 30.

A first flow channel 11 is disposed in the cleaning pool 10, and the first flow channel 11 is configured to receive a portion of the main body portion 101 that needs to be cleaned. In the embodiment, the first flow channel 11 is disposed in an elongated column shape, that is, the first flow channel 11 and The outer dimensions of the main body portion 101 of the sampling needle 100 are matched, which is advantageous for reducing the hanging liquid on the sampling needle 100 and cleaning the main body portion 101 of the sampling needle 100 more thoroughly, thereby improving the precision of the sampling needle. One end of the cleaning pool 10 is provided with a mounting hole 12, and the mounting hole 12 is in communication with the first flow path 11, and the mounting hole 12 is for accommodating the pool cover 20. The cleaning tank 10 is provided with a liquid inlet 13 at one end of the mounting hole 12, and the liquid inlet 13 communicates with the mounting hole 12, and the cleaning liquid enters the first flow path 11 through the liquid inlet 13. One end of the cleaning pool 10 away from the pool cover 20 is provided with a receiving groove 14, that is, the receiving groove 14 is located at one end of the cleaning pool 10 away from the mounting hole 12, the receiving groove 14 is for receiving the joint 30; and the cleaning pool 10 corresponds to the inner wall of the receiving groove 14. The internal thread portion 15 is provided.

In the present embodiment, the pool cover 20 is detachably mounted in the mounting hole 12 for easy processing; in another embodiment, the pool cover 20 can also be integrally formed with the cleaning pool 10. The pool cover 20 is provided with a through slot 21, and the through slot 21 is in communication with the first flow passage 11, and the through slot 21 is provided for the sampling needle 100 to pass through. The pool cover 20 is provided with a spray hole 22, and the spray hole 22 communicates with the liquid inlet 13 and the through groove 21, respectively, that is, the cleaning liquid flows from the liquid inlet 22 through the spray hole 22 and the through groove 21 to the first flow path 11 The end of the spray hole 22 communicating with the liquid inlet 13 is higher than the end of the spray hole 22 communicating with the through groove 21, that is, the spray hole 22 is inclined with respect to the through groove 21, so that the cleaning liquid enters from the spray hole 22. When the air is passed into the through slot 21, in addition to the cleaning pressure of the flow path, the impact force can be generated by the gravity of the flow path, and the outer wall of the sampling needle 100 is flushed, which is advantageous for improving the cleanliness of the sampling needle 100, and can also be sampled according to the sampling. The flushing intensity sets the inclination of the shower hole 22. In this embodiment, the pool cover 20 is provided with an annular groove 23, and the annular groove 23 is respectively connected with the liquid inlet 13 and the shower hole 22, and the number of the spray holes 22 is plural, and the plurality of spray holes 22 are surrounded. The pool cover 20 is circumferentially spaced, and the cleaning liquid enters the annular groove 23 from the liquid inlet 13 and then flows into the through groove 21 from each of the shower holes 22, that is, the outer wall of the sampling needle 100 is performed by using the plurality of shower holes 22. Cleaning causes the outer wall of the sampling needle 100 to be washed more uniformly. In other embodiments, a plurality of liquid inlets 13 may be disposed in the cleaning tank 10. The pool cover 20 may be provided with a plurality of spray holes 22 respectively corresponding to the liquid inlets 13, so that the outer wall of the sampling needle 100 is more uniformly washed. .

In this embodiment, the two ends of the pool cover 20 are also provided with a sealing ring 24, and the sealing ring 24 serves as a sealing function. When the battery cover 20 is received in the mounting hole 12, the sealing ring 24 and the mounting hole 12 are The inner wall is in close contact to prevent liquid from overflowing between the pool cover 20 and the inner wall of the mounting hole 12 during cleaning.

The joint 30 is detachably mounted in the accommodating groove 14. A second flow path 31 is disposed in the joint 30. The second flow path 31 is in communication with the first flow path 11. The second flow path is mainly used for accommodating the needle tip portion 102. The second flow channel 31 has an inverted cone shape and a second flow path. The track 31 is matched with the outer shape of the tip end of the sampling needle 100. Specifically, the cross-sectional area of the end of the second flow path 31 corresponding to the first flow path 11 is equal to the cross-sectional area of the first flow path 11, and the second flow path 31 is away from the first The cross-sectional area of one end of the first-class track 11 is smaller than the cross-sectional area of the first flow path 11; the transition portion of the main body portion 101 and the tip portion 10 is easy to gather the liquid of the cleaning liquid and the cleaning is not complete, and the second flow path 31 is set as an inverted cone Shape, which is beneficial to reduce the generation of cleaning liquid and clean cleaning, and improve the accuracy of sampling test results.

The outer peripheral wall of the joint 30 has an externally threaded portion 32, and the joint 30 is mounted in the accommodating groove 14 by the mating screwing of the externally threaded portion 32 and the internally threaded portion 15, whereby the joint 30 can be freely detached and mounted, thereby being sampled according to sampling The size and shape of the needle 100 is changed to the joint 30 of the second flow path 31 corresponding to the size and shape, and it is not necessary to replace the entire cleaning device, which is advantageous for improving the applicability of the sample needle cleaning device and reducing the production cost. Since the first flow path 11 and the second flow path 31 are separately processed, the processing is easy, thereby effectively solving the problem that the cleaning flow path of the conventional cleaning device is difficult to process due to the variable diameter and slenderness, and the production cost is reduced; when the sampling needle 100 is cleaned, The smaller the matching gap between the outer wall of the cleaning portion of the sampling needle 100 and the flow channel wall of the cleaning device, that is, the better the matching between the sampling needle 100 and the flow channel of the cleaning device, the more thorough the cleaning of the outer wall of the sampling needle 100, cleaning After the completion of the sampling needle 100, the less the outer wall hanging liquid when leaving the cleaning device, the first flow path 11 and the second flow path 31 are separately processed, which is advantageous for improving the processing precision of the first flow path 11 and the second flow path 31, that is, improving the first The first-stage track 11 and the second flow path 31 respectively match the degree of matching between the main body portion 101 of the needle 100 and the needle tip portion 102, thereby improving the cleaning degree of the sampling needle 100.

In this embodiment, one end of the joint 30 corresponding to the first flow passage 11 is mounted with a sealing ring 33, and the sealing ring 24 serves as a sealing function. When the joint 30 is received in the receiving groove 14, the sealing ring 33 and the receiving groove 14 are The bottom wall is in close contact to prevent liquid from overflowing between the joint 30 and the inner wall of the accommodating groove 14 during washing. The position of the joint 30 near the external thread portion 32 is the engaging portion 34. When the joint 30 is fixed in the receiving groove 14 by the matching screwing of the external thread portion 32 and the female thread portion 15, the engaging portion 34 is locked in the washing pool 10. Outside the ends, the stability of the connection of the joint 30 to the wash tank 10 is improved, while the joint 30 is easily installed and removed. The joint 30 is further provided with a draining passage 33 communicating with the second flow passage 31, and the waste liquid after washing the sampling needle 100 flows out from the draining passage 35; the joint 30 corresponds to one end of the draining passage 35 as the barb portion 36, and the barb The part 36 is used for connecting the waste liquid pipe of the outside, and the waste liquid pipe is connected with the waste liquid pump, and the other end of the waste liquid pump is connected with the external waste liquid collecting device, and the washed waste liquid is discharged from the draining channel 34 through the waste liquid. The tube flows into the waste collection device of the outside world.

Referring to FIG. 3, a sampling needle cleaning apparatus according to a second embodiment of the present invention includes a cleaning tank 10a, a pool cover 20a installed on the cleaning tank 10a, and a joint 30a mounted on the cleaning tank 10a. The cleaning channel 10a is provided with a first flow path 11a, and the joint 30a is provided with a second flow path 31a. The structures of the cleaning pool 10a, the first flow channel 11a, the pool cover 20a, and the joint 30a are the same as those of the cleaning pool 10, the first flow channel 11, the pool cover 20, and the joint 30 in the first embodiment; the difference is that the second The flow path 31a is provided in a column shape, so that the second flow path 31a can match the sampling needle provided by the needle tip portion 102 as a cylindrical body, and the cross-sectional area of the second flow path 31a is smaller than the cross-sectional area of the first flow path 11a.

When the sampling needle cleaning device cleans the sampling needle, the joint 30 of the second flow path 31 matching the outer shape of the needle tip portion 102 of the sampling needle 100 is installed in the receiving groove 14 of the cleaning tank 10, and the sampling needle 100 is passed through the groove on the pool cover. 21 is inserted, the main body portion 101 to be cleaned is accommodated in the first flow path 11, the needle tip portion 102 is accommodated in the second flow path 31, and the cleaning liquid is sprayed from the liquid inlet 13 through the shower hole 22 to be accommodated in the first flow. The main body portion 101 in the lane 11 then flows to the needle tip portion 102 housed in the second flow passage 31.

The sampling needle cleaning device of the present invention is detachably connected to the cleaning pool provided with the second flow path by the joint provided with the second flow path, and the second flow path 31 corresponding to the size and shape can be replaced according to the size and shape of the sampling needle 100. The joint 30 does not need to replace the entire cleaning device, which is advantageous for improving the applicability of the sampling needle cleaning device and reducing the production cost; the first flow path 11 and the second flow path 31 are separately processed and processed easily, thereby effectively solving the traditional cleaning device. The cleaning flow path is difficult to process due to the variable diameter and slenderness; the first flow path 11 and the second flow path 31 are separately processed, which is advantageous for improving the processing precision of the first flow path 11 and the second flow path 31, that is, improving the first flow path. 11 and the second flow path 31 respectively match the main body portion 101 and the needle tip portion 102 of the sampling needle 100, and the sampling needle 100 is effectively cleaned, thereby improving the accuracy of the test result of the sampling needle 100; the battery cover 20 is housed in the mounting hole. Within 12, it is also possible to replace the pool lids of different sizes, numbers and inclination shower holes 22, further improving the applicability of the cleaning device.

The technical features of the above-described embodiments may be arbitrarily combined. For the sake of brevity of description, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be considered as the scope of this manual.

The above-described embodiments are merely illustrative of several embodiments of the present invention, and the description thereof is more specific and detailed, but is not to be construed as limiting the scope of the invention. It should be noted that a number of variations and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, the scope of the invention should be determined by the appended claims.

Claims (10)

A sampling needle cleaning device, comprising: a cleaning pool, a pool cover disposed at one end of the cleaning pool, and a joint; the pool cover is provided with a through groove and a spray hole communicating with the through groove; a first flow channel is disposed in the cleaning pool, and the first flow channel is in communication with the through groove; the first flow channel is disposed in an elongated column shape; and the receiving pool is provided with a receiving groove at an end away from the cell cover, The joint is detachably mounted in the receiving groove, and the joint is provided with a second flow passage, and the second flow passage is correspondingly connected to the first flow passage. The sampling needle cleaning device according to claim 1, wherein the cleaning pool is provided with an internal thread portion corresponding to the inner wall of the receiving groove, and the outer peripheral wall of the joint has an external thread portion through which the joint passes. The mating portion of the portion and the internal thread portion is mounted in the receiving groove. The sampling needle cleaning device according to claim 1, wherein one end of the cleaning pool is provided with a mounting hole, the mounting hole is in communication with the first flow channel, and one end of the cleaning pool corresponding to the mounting hole is provided. a liquid inlet, the pool cover is detachably mounted in the mounting hole, and the other end of the shower hole is in communication with the liquid inlet. The sampling needle cleaning device according to claim 3, wherein both ends of the corresponding annular groove of the pool cover are further provided with a sealing ring, and the sealing ring is in close contact with the inner wall of the mounting hole. The sampling needle cleaning device according to claim 3, wherein one end of the shower hole communicating with the liquid inlet is higher than an end of the shower hole communicating with the through groove. The sampling needle cleaning device according to claim 5, wherein the pool cover is provided with an annular groove, and the annular groove is respectively connected with the liquid inlet and the spray hole, the spray hole The number of the plurality of spray holes is circumferentially spaced around the pool cover. The sampling needle cleaning device according to claim 1, wherein the second flow path has an inverted cone shape, and a cross-sectional area of the end of the second flow path corresponding to the first flow path is equal to the first The cross-sectional area of the first flow passage, the cross-sectional area of the second flow passage away from the one end of the first flow passage is smaller than the cross-sectional area of the first flow passage. A sampling needle cleaning apparatus according to claim 1, wherein said second flow path is provided in a column shape, and said second flow path has a cross-sectional area smaller than a cross-sectional area of said first flow path. The sampling needle cleaning device according to claim 1, wherein one end of the joint corresponding to the first flow path is mounted with a seal ring, and the seal ring is in close contact with a bottom wall of the accommodating groove. The sampling needle cleaning device according to claim 1, wherein the joint is further provided with a drain passage communicating with the second flow passage, and one end of the joint corresponding to the drain passage is a barb portion.

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