CN107802906A - A blood purification system - Google Patents

Abstract

The invention discloses a blood purification system, which belongs to the field of blood treatment equipment and comprises a blood purification device and a blood flow reversing device, wherein a blood inlet end and a blood outlet end of the blood purification device are respectively connected with a pipeline A and a pipeline B; when the blood flow reversing device is in one state, the pipeline A is communicated with the pipeline C, and the pipeline B is communicated with the pipeline D; when the blood flow reversing device is in another state, the pipeline A is communicated with the pipeline D, the pipeline B is communicated with the pipeline C, the pipeline C and the pipeline D are both connected with branch pipes, and the branch pipes are provided with covers. The blood flow reversing device can quickly reverse blood flow, effectively avoid thrombosis, avoid infection, reduce purification time, improve nursing efficiency, and simultaneously facilitate the operations of medicine supplementation and blood drawing sampling.

Description

A blood purification system

technical field

The invention relates to the field of blood treatment equipment, in particular to a blood purification system.

Background technique

Blood purification technology is the most important treatment for acute or chronic renal failure. The premise of this technology is to establish unobstructed vascular access for patients. According to epidemiology, the hemodialysis double-lumen catheter is one of the most commonly used vascular accesses for acute or chronic renal failure. The double-lumen catheter forms two blood flow channels, one in and one out. However, during the treatment process, the blood flow of the human body cannot be normally drawn out of the body or returned to the body due to the double-lumen catheter, which leads to the unexpected termination of the blood purification treatment. Clinicians often achieve the purpose of continuing treatment by trying to adjust the connection mode of the vascular access. The most common way is to reverse the connection of the tube to change the direction of blood flow, so that the blood flow can run smoothly again. However, there are some clinical problems and medical hidden dangers in the time operation, for example: 1. It takes a long time (5-30 minutes) to suspend the blood purification treatment, which may cause adverse effects on the patient's treatment effect; 2. This operation is an open operation. The blood in the blood will be exposed outside the lumen or in the air for a long time, and there is a risk of iatrogenic infection and thrombosis; 3. Since the blood pump of the blood purification machine is in a stopped state during the operation, the catheter lumen will The blood in the blood is easy to form a thrombus and spread along the cavity, and even cause the deep vein of the patient to form a thrombus, which may cause an embolism event; 4. Due to the actual treatment process, it may be necessary to repeatedly perform reverse connection, which makes the operation intensity of nursing increase , resulting in a huge waste of human resource costs.

In addition, in the process of blood purification treatment, it is often necessary to establish an additional channel for replenishment of medicinal liquid or blood sampling, and it is often necessary to connect a tee at the outlet end of the double-lumen catheter. But this method will lead to potential medical hidden dangers: 1. The connection of the three-way is easy to loosen, causing blood and liquid to overflow, and even disconnection causes serious adverse events; It is easy to cause the blood shear force to increase, and it is easy to cause thrombus formation; 3, the operation intensity of nursing care is increased, and it is easy to cause iatrogenic infection.

Contents of the invention

The present invention aims to provide a blood purification system, which can solve the problems existing in the process of reversely connecting the pipeline, effectively avoid thrombus formation, avoid infection, reduce purification time, and improve nursing efficiency.

In order to achieve the above object, the technical solution adopted by the present invention is as follows: a blood purification system, including a blood purification device and a blood flow reversing device, the blood inlet port and the blood outlet port of the blood purification device are respectively connected to the pipeline A, the tube The pipeline B also includes pipeline C and pipeline D connected to the patient, and the pipeline A, pipeline B, pipeline C, and pipeline D are respectively communicated with the blood flow reversing device; the blood flow reversing device When the device is in one state, pipeline A communicates with pipeline C, and pipeline B communicates with pipeline D; when the blood flow reversing device is in another state, pipeline A communicates with pipeline D, and pipeline B communicates with pipeline D. Connected to line C.

Further, the pipelines C and D are connected with branch pipes, and the branch pipes are provided with covers.

Preferably, the blood flow reversing device is a rotary reversing device, including a body part, the top surface of the body part is provided with a blind hole, the side wall of the blind hole is provided with a circle of grooves along the circumferential direction of the blind hole, and the body part The side wall of the upper part is provided with four interfaces, and the four interfaces are all connected with the groove, and the four interfaces are respectively located in the four quadrants of the same coordinate system; a core is provided in the blind hole, and the core and the body The side wall of the core is provided with two facing protrusions, and the protrusions are matched with the grooves.

Further, a knob is provided on the top of the core.

Further, the knob is slidably connected to the core, and the top of the core is provided with a sliding groove, the knob is matched with the sliding groove, and the sliding groove runs through the side wall of the core and extends to the top surface of the main body.

Further, a seal is provided between the blind hole and the core, and between the protrusion and the groove.

Preferably, the blood flow reversing device is a rotary reversing device, including a first body and a second body, the end face of the first body is provided with a fixed shaft, and the end face of the second body is provided with a shaft adapted to the fixed shaft. shaft hole, the end face of the first body and the end face of the second body are connected to each other through the fixed shaft, the end face of the first body is provided with a through hole a and a through hole b, and the end face of the second body is provided with a through hole c and a through hole d , the through hole a, through hole b, through hole c, and through hole d are all parallel to the fixed axis, and the rotation radii of the through hole a, through hole b, through hole c, and through hole d are equal.

Further, a handle is provided on the side wall of the first body and/or the second body.

The second body is provided with a pin shaft, and the end surface of the first body is provided with two pin holes matching the pin shaft, the pin shaft runs through the second body, and the two pin holes are symmetrical about the fixed axis set up.

Further, two sealing rings are provided on the end surface of the first body, the two sealing rings are respectively concentric with the through hole a and the through hole b, and the diameters of the two sealing rings are respectively larger than the diameter of the through hole a and the through hole b diameter of.

Preferably, the blood flow reversing device includes a connecting tube a, a connecting tube b, a connecting tube c, and a connecting tube d, and the pipeline A passes through the connecting tube a, the connecting tube b and the pipeline C and the pipeline D The pipeline B communicates with the pipeline C and the pipeline D through the connecting pipe c and the connecting pipe d, and the connecting pipe a, the connecting pipe b, the connecting pipe c and the connecting pipe d are all provided with stop clips.

Preferably, the blood purification device is a blood purification machine.

Preferably, the pipeline C and the pipeline D shown are two branch pipelines of the same double-lumen catheter.

The beneficial effects of the present invention are:

1. The setting of the blood reversing device can effectively solve the risk of thrombus formation and infection in the process of reverse connection of the pipeline, and at the same time, it can reduce the purification time and improve the nursing efficiency;

2. The setting of the branch pipe and the cover is convenient for tonic and blood sampling;

3. The setting of the rotating and reversing blood reversing device has the effect of further improving nursing efficiency and reducing purification time.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a schematic structural diagram of the blood flow reversing device in Embodiment 1;

Fig. 3 is A-A view among Fig. 2;

Fig. 4 is a schematic diagram of the use of the blood flow reversing device in Embodiment 1;

Fig. 5 is a schematic structural diagram of the blood flow reversing device of the second embodiment;

Fig. 6 is a schematic diagram of the use of the blood flow reversing device in the second embodiment;

Fig. 7 is a schematic structural diagram of the blood flow reversing device of the third embodiment.

In the figure: 1-blood purification device, 2-blood reversing device, 3-line A, 4-line B, 5-line C, 6-line D, 7-branch, 8-cover, 21- Body part, 22-blind hole, 23-groove, 24-interface, 25-core, 26-protrusion, 27-knob, 200-pin shaft, 210-first body, 220-through hole a, 230- Through hole b, 240-sealing ring, 250-second body, 260-through hole c, 270-through hole d, 280-fixed shaft, 290-handle, 201-connecting pipe a, 202-connecting pipe b, 203- Connecting pipe c, 204-connecting pipe d, 205-stop clamp.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

Embodiment one:

As shown in FIG. 1, a blood purification system includes a blood purification device 1 and a blood flow reversing device 2. The blood inlet port and the blood outlet port of the blood purification device 1 are respectively connected to a pipeline A3 and a pipeline B4. Including pipeline C5 and pipeline D6 connected to the patient, the pipeline A3, pipeline B4, pipeline C5 and pipeline D6 communicate with the blood flow reversing device 2 respectively; the blood flow reversing device 2 In one state, pipeline A3 communicates with pipeline C5, and pipeline B4 communicates with pipeline D6; when the blood flow reversing device 2 is in another state, pipeline A3 communicates with pipeline D6, and pipeline B4 communicates with pipeline D6. The pipeline C5 is connected.

The pipeline C5 and pipeline D6 are branch pipelines of the double-lumen catheter.

Both the pipeline C5 and the pipeline D6 are connected with a branch pipe 7, and the branch pipe 7 is provided with a cover 8, and the cover 8 is connected with the branch pipe 7 in a sealed manner.

In order to ensure that no blood shear force is formed when the blood flows in the pipelines, the diameters of the pipelines A3, B4, C5 and D6 are equal.

As shown in Figure 2 and Figure 3, the blood flow reversing device 2 is a rotary reversing device, comprising a cylindrical body part 21, the top surface of the body part 21 is provided with a blind hole 22, and the side wall of the blind hole 22 There is a circle of grooves 23 along the circumferential direction of the blind hole 22, and the side wall of the main body 21 is provided with four interfaces 24, and the four interfaces 24 are all connected with the grooves 23, and the four interfaces 24 are respectively located at the same coordinate In the four quadrants of the system, four interfaces 24 are evenly distributed on the side wall of the body part 21 at intervals of 90°, and the four interfaces 24 are respectively connected to the pipeline A3, the pipeline B4, the pipeline C5, and the pipeline D6, wherein the pipeline A3 is directly opposite to pipeline B4, and pipeline C5 is directly opposite to pipeline D6;

The blind hole 22 is provided with a core 25, the core 25 is adapted to the blind hole 22, the core 25 is rotatably connected to the main body 21, and the side wall of the core 25 is provided with two facing protrusions 26, The protrusion 26 is adapted to the groove 23; the cross section of the groove 23 is arc or rectangle.

Sealing elements are provided between the blind hole 22 and the core 25 , and between the protrusion 26 and the groove 23 .

For ease of use, a knob 27 is provided on the top of the core 25 .

In order to prevent the core 25 from rotating when the blood flows, the knob 27 is slidably connected to the core 25, the top of the core 25 is provided with a chute, the knob 27 is matched with the chute, and the chute runs through the core 25 The opposite side wall of the body portion 21 extends to the top surface of the body portion 21. There are four chute slots on the top surface of the body portion 21, and the four chute slots are arranged at intervals of 90°. When the knob 27 and one of the chute slots on the top surface of the body portion 21 When mating, the pipeline A3 communicates with the pipeline C5, and the pipeline B4 communicates with the pipeline D6; Connected, the pipeline B4 communicates with the pipeline C5.

The diameter of the interface 24 is equal to the diameters of the pipeline A3 , the pipeline B4 , the pipeline C5 and the pipeline D6 .

The cross-sectional area of the groove 23 is equal to the cross-sectional area of the inner wall of the interface 24 .

When in use, connect one port of the pipeline A3, pipeline B4, pipeline C5, and pipeline D6 to the blood purification device 1 and the patient respectively; One port is respectively connected to two facing interfaces 24, and the other port of pipeline C5 and pipeline D6 is respectively connected to the other two facing interfaces 24, and the knob 27 is turned to make pipeline A3 and pipeline C5 is located on one side of the protrusion 26, pipeline B4 and pipeline D6 are located on the other side of the protrusion 26, slide the knob 27 to the chute on the top surface of the body part 21, the core part 25 is fixed and cannot rotate; start the blood purification Device 1 starts blood purification for the patient. At this time, the blood flows into the blood purification device 1 from the patient's body through the tube C5, the groove 23, and the pipeline A3. After purification, the blood flows into the blood through the pipeline B4, the groove 23, and the pipeline D6. patient;

When it is necessary to reverse the flow of blood, turn the knob 27 and slide the knob 27 to another chute on the top surface of the body part 21, so that the pipeline A3 and the pipeline D6 are located on the same side of the protrusion 26, and the pipeline B4 It only needs to be located on the other side of the protrusion 26 with the pipeline C5. At this time, the blood flows into the blood purification device 1 from the patient through the pipeline D6, the groove 23, and the pipeline A3. After purification, the blood passes through the pipeline B4, the groove 23. The pipeline C5 flows into the patient.

Embodiment two:

As shown in Figure 5, the difference from Embodiment 1 is that the structure of the blood reversing device 2 is different. In this embodiment, the blood reversing device 2 is a rotary reversing device, including a cylindrical The first body 210 and the second body 250, the end face of the first body 210 is provided with a fixed shaft 280, the fixed shaft 280 is perpendicular to the end face of the first body 210, and the end face of the second body 250 is provided with a fixed shaft 280 compatible The end face of the first body 210 and the end face of the second body 250 are connected to each other through the fixed shaft 280, the end face of the first body 210 is provided with a through hole a220 and the through hole b230, and the end face of the second body 250 is provided with There are through holes c260 and through holes d270, said through holes a220, through holes b230, through holes c260, and through holes d270 are all parallel to the fixed axis 280, and the rotation of through holes a220, through holes b230, through holes c260, and through holes d270 The radii are equal, and the diameters of the through hole a220, the through hole b230, the through hole c260, and the through hole d270 are equal to the diameters of the pipeline A3, the pipeline B4, the pipeline C5, and the pipeline D6.

The end surface of the first body 210 is provided with two sealing rings 240, the two sealing rings 240 are respectively concentric with the through hole a220 and the through hole b230, and the diameters of the two sealing rings 240 are respectively larger than the diameter of the through hole a220 and the through hole The diameter of the b230.

In order to facilitate the rotation of the first body 210 relative to the second body 250 , a handle 290 is provided on the side wall of the second body 250 .

In order to ensure that the blood flow reversing device 2 can be stably in the first state or the second state, the second body 250 is provided with a pin shaft 200, and the end surface of the first body 210 is provided with two 200, the pin shaft 200 runs through the second body 250, and the two pin holes are arranged symmetrically with respect to the fixed shaft 280. When the pin shaft 200 is matched with one of the pin holes on the end surface of the first body 210, the The pipeline A3 communicates with the pipeline C5, and the pipeline B4 communicates with the pipeline D6; when the pin shaft 200 is matched with another pin hole on the end surface of the first body 200, the pipeline A3 communicates with the pipeline D6, and the pipeline Road B4 communicates with pipeline C5.

When in use, connect one port of the pipeline A3, pipeline B4, pipeline C5, and pipeline D6 to the blood purification device 1 and the patient respectively; One port is respectively connected with the through hole a220 and the through hole b230 on the first body 210, and the other port of the pipeline C5 and the pipeline D6 is respectively connected with the through hole c260 and the through hole d270 on the second body 250, and the pin The shaft 200 is inserted into one of the pin holes, and the blood purification device 1 is activated. At this time, the blood flows into the blood purification device 1 from the patient's body through the pipeline C5, the through hole c260, the through hole a220, and the pipeline A3. After purification, the blood flows through the pipeline B4, through hole b230, through hole d270, and pipeline D6 flow into the patient;

When it is necessary to reverse the flow of blood, it is only necessary to pull out the pin shaft 200, turn the handle 290 by 180°, and then insert the pin shaft 200 into another pin hole. d270, through hole a220, and pipeline A3 flow into the blood purification device 1, and after purification, blood flows into the patient through pipeline B4, through hole b230, through hole c260, and pipeline C5.

Embodiment three:

As shown in Figure 7, the difference between it and Embodiment 1 is that the structure of the blood reversing device 2 is different. In this embodiment, the blood reversing device 2 includes connecting pipe a201, connecting pipe b202, connecting pipe Pipe c203 and connecting pipe d204, the pipeline A3 communicates with the pipeline C5 and pipeline D6 through the connecting pipe a201 and the connecting pipe b202, and the pipeline B4 communicates with the pipeline through the connecting pipe c203 and the connecting pipe d204 C5 and the pipeline D6 are connected, and the connecting pipe a201, the connecting pipe b202, the connecting pipe c203, and the connecting pipe d204 are all provided with a flow-stop clip 205.

The diameters of the connecting pipe a201 , connecting pipe b202 , connecting pipe c203 and connecting pipe d204 are equal to those of the pipeline A3 , pipeline B4 , pipeline C5 and pipeline D6 .

When in use, connect one port of the pipeline A3, pipeline B4, pipeline C5, and pipeline D6 to the blood purification device 1 and the patient respectively; then connect the other port of the pipeline A3 through the connecting tube a201, connecting tube b202 Communicate with the pipeline C5 and pipeline D6, connect the other port of the pipeline B4 with the pipeline C5 and pipeline D6 through the connecting pipe c203 and the connecting pipe d204; connect the stop clip 205 on the connecting pipe a201 Open, close the stop clip 205 on the connecting tube b202, open the stop clip 205 on the connecting tube c203, close the stop clip 205 on the connecting tube d204, start the blood purification device 1, at this time, the blood passes through the pipeline from the patient's body C5, the connecting pipe a201, and the pipeline A3 flow into the blood purification device 1, and then flow into the patient through the pipeline B4, the connecting pipe c203, and the pipeline D6 after purification;

When the reverse flow of blood flow is required, it is only necessary to close the stop clip 205 on the connecting tube a201, open the stop clip 205 on the connecting tube b202, close the stop clip 205 on the connecting tube c203, and put the stop clip 205 on the connecting tube d204. Just open the flow stop clip 205. At this time, the blood flows into the blood purification device 1 from the patient's body through the pipeline D6, the connecting tube b202, and the pipeline A3. After purification, the blood flows into the patient through the pipeline B4, the connecting tube d204, and the pipeline C5. .

Certainly, the present invention also can have other various embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding changes All changes and modifications should belong to the scope of protection of the appended claims of the present invention.

Claims (10)

1. A kind of 1. blood purification system, it is characterised in that：Including apparatus for purifying blood (1), blood flow reversing arrangement (2), the blood The blood inlet end of liquid purifier (1), blood exit port difference connecting line A (3), pipeline B (4), in addition to connect with patient Pipeline C (5), the pipeline D (6) connect, the pipeline A (3), pipeline B (4), pipeline C (5), pipeline D (6) change with the blood flow respectively Connected to device (2)；In a state, pipeline A (3) is connected the blood flow reversing arrangement (2) with pipeline C (5), pipeline B (4) Connected with pipeline D (6)；In another state, pipeline A (3) is connected the blood flow reversing arrangement (2) with pipeline D (6), pipeline B (4) connected with pipeline C (5).
2. 2. one kind according to claim 1, it is characterised in that：The pipeline C (5), pipeline D (6) are respectively connected with branch pipe (7), branch pipe (7) is provided with lid (8).
3. 3. blood purification system according to claim 1, it is characterised in that：The blood flow reversing arrangement (2) includes body Portion (21), body (21) top surface are provided with blind hole (22), and the side wall of blind hole (22) is provided with a circle along blind hole (22) circumference side To groove (23), body (21) side wall is provided with four interfaces (24), four interfaces (24) with the groove (23) Connection, four interfaces (24) are respectively in four quadrants of the same coordinate system；Core (25), core are provided with the blind hole (22) Portion (25) is rotatablely connected with body (21), and the side wall of core (25) is provided with the projection (26) of two faces, the projection (26) It is adapted with groove (23).
4. 4. blood purification system according to claim 1, it is characterised in that：The blood flow reversing arrangement (2) includes first Body (210) and the second body (250), the end face of the first noumenon (210) are provided with fixing axle (280), the second body (250) End face be provided with the axis hole that is adapted with fixing axle (280), the first noumenon (210) end face passes through with the second body (250) end face The connection that the fixing axle (280) mutually rotates, the first noumenon (210) end face are provided with through hole a (220) and through hole b (230), the Two bodies (250) end face is provided with through hole c (260) and through hole d (270), the through hole a (220), through hole b (230), through hole c (260), through hole d (270) is each parallel to fixing axle (280), through hole a (220), through hole b (230), through hole c (260), through hole d (270) the radius of gyration is equal.
5. 5. blood purification system according to claim 1, it is characterised in that：The blood flow reversing arrangement (2) includes connection Pipe a (201), connecting tube b (202), connecting tube c (203), connecting tube d (204), the pipeline A (3) by connecting tube a (201), Connecting tube b (202) connects with the pipeline C (5), pipeline D (6), and the pipeline B (4) passes through connecting tube c (203), connecting tube d (204) connected with the pipeline C (5), pipeline D (6), connecting tube a (201), connecting tube b (202), connecting tube c (203), connection Flow-stopping clip (205) is equipped with pipe d (204).
6. 6. the blood purification system according to claim 3 or 4, it is characterised in that：The top of the core (25) is provided with rotation The side wall of button (27), the first noumenon (210) and/or the second body (250) is provided with handle (290).
7. 7. blood purification system according to claim 6, it is characterised in that：The knob (27) is slided with core (25) to be connected Connect, chute is provided with the top of core (25), knob (27) is adapted with chute, side wall and extension of the chute through core (25) To body (21) top surface.
8. 8. blood purification system according to claim 4, it is characterised in that：Second body (250) is provided with bearing pin (200), the second body (210) end face is provided with two pin-and-holes being adapted with the bearing pin (200), and bearing pin (200) passes through The second body (250) is worn, described two pin-and-holes are symmetrical arranged on fixing axle (280).
9. 9. the blood purification system according to claim 3 or 4, it is characterised in that：The blind hole (22) and core (25) it Between, be equipped between raised (26) and groove (23), between the first noumenon portion (210) and the second body (250) Seal.
10. 10. blood purification system according to claim 9, it is characterised in that：Set on the end face of the first noumenon (210) There are two sealing rings (240), two sealing rings (240) are concentric with through hole a (220), through hole b (230) respectively, two sealing rings (240) diameter is respectively greater than the diameter of through hole a (220), through hole b (230) diameter.