Emergency blood return pipeline and hemodialysis pipeline system

Abstract

The utility model discloses an emergency blood return pipeline and hemodialysis pipeline system.The emergency blood return pipeline comprises an emergency blood guide catheter, an emergency vein pot and an emergency blood return catheter, the emergency vein pot is provided with a blood input end and a blood output end, the emergency blood guide catheter is connected with the blood input end of the emergency vein pot, and the emergency blood return catheter is connected with the emergency vein pot. And the emergency blood return conduit is connected with the blood output end of the emergency vein pot. The emergency blood return device can be connected to a hemodialysis pipeline system for emergency blood return when the vein pot filter is blocked, and the problem that the life safety of a patient is threatened due to blood loss of the patient caused by blocking of the vein pot filter is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of hemodialysis pipeline devices, in particular to an emergency blood return pipeline and a hemodialysis pipeline system. Background Art

[0002] Hemodialysis (HD) is one of the renal replacement therapies for patients with acute and chronic renal failure. It involves draining the blood in the body to the outside, passing it through a dialyzer composed of countless hollow fibers. Inside and outside the hollow fibers, the blood and an electrolyte solution (dialysate) with a concentration similar to that of the body perform mass exchange through the principles of diffusion, ultrafiltration, adsorption, and convection to remove metabolic wastes in the body, maintain electrolyte and acid-base balance; at the same time, excess water in the body is removed, and the entire process of returning the purified blood is called hemodialysis.

[0003] In the prior art, a hemodialysis pipeline system includes a blood drawing catheter, a blood pump, an arterial chamber, a dialyzer, a venous chamber, and a blood return catheter. Under the pumping action of the blood pump, the blood of the patient can flow back into the patient's body after passing through the blood drawing catheter, blood pump, arterial chamber, dialyzer, venous chamber, and blood return catheter in sequence, and blood purification is completed in the dialyzer. Among them, a filter for filtering blood is provided inside the venous chamber, and a side branch pipe for administering drugs is connected above the venous chamber. However, the hemodialysis pipeline system in the prior art still has the following defects: during the process of blood flowing through the filter of the venous chamber, impurities in the blood easily block the filtering holes of the filter of the venous chamber. In addition, if blood coagulates at the filter of the venous chamber, it will also block the filtering holes of the filter of the venous chamber; when impurities or blood clots block the filtering holes of the filter of the venous chamber, it will cause unsmooth blood return, easily lead to blood loss of the patient, and endanger the life safety of the patient. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide an emergency blood return pipeline that can be connected to the hemodialysis pipeline system for emergency blood return when the filter of the venous chamber is blocked. At the same time, the utility model also provides a hemodialysis pipeline system with an emergency blood return pipeline.

[0005] To solve the above first technical problem, the technical solution of the utility model is: an emergency blood return pipeline includes an emergency blood drawing catheter, an emergency venous chamber, and an emergency blood return catheter. The emergency venous chamber has a blood input end and a blood output end. The emergency blood drawing catheter is connected to the blood input end of the emergency venous chamber, and the emergency blood return catheter is connected to the blood output end of the emergency venous chamber.

[0006] Preferably, one end of the emergency blood drawing catheter is provided with a first connector; the emergency blood return line further includes a saline access catheter, one end of the saline access catheter is provided with a saline bottle cannula for inserting into a physiological saline bottle, and the other end of the saline access catheter is provided with a second connector matching the first connector, and the second connector and the first connector can be connected or separated from each other. Further, a first catheter clamp that can be tightened or loosened is provided on the emergency blood drawing catheter; a protective sleeve is detachably sleeved outside the saline bottle cannula, and a second catheter clamp that can be tightened or loosened is provided on the saline access catheter.

[0007] Preferably, an emergency filter for filtering blood is provided inside the emergency venous chamber, an emergency side branch tube for administering drugs is connected to the emergency venous chamber, a third catheter clamp that can be tightened or loosened is provided on the emergency side branch tube, and a cap is provided at the end of the emergency side branch tube.

[0008] Preferably, one end of the emergency blood return catheter is provided with a third connector, and a protective sleeve is detachably connected to the third connector, and a cover body is installed at one end of the protective sleeve.

[0009] To solve the above-mentioned second technical problem, the technical solution of the present invention is: a hemodialysis tubing system, including a blood drawing catheter, a blood pump, an arterial chamber, a dialyzer, a venous chamber and a blood return catheter. Under the pumping action of the blood pump, the blood of the patient can sequentially pass through the blood drawing catheter, the blood pump, the arterial chamber, the dialyzer, the venous chamber and the blood return catheter and then flow back into the patient's body, and blood purification is completed in the dialyzer; a filter for filtering blood is provided inside the venous chamber, and a side branch tube for administering drugs is connected to the venous chamber; the hemodialysis system further includes an emergency blood return line, the emergency blood return line includes an emergency blood drawing catheter, an emergency venous chamber and an emergency blood return catheter, the emergency venous chamber has a blood input end and a blood output end, the emergency blood drawing catheter is connected to the blood input end of the emergency venous chamber, and the emergency blood return catheter is connected to the blood output end of the emergency venous chamber; the emergency blood drawing catheter and the side branch tube are connected or separated from each other. When the emergency blood drawing catheter and the side branch tube are connected to each other, the blood output from the dialyzer can sequentially pass through the emergency blood drawing catheter, the emergency venous chamber and the emergency blood return catheter and then flow back into the patient's body.

[0010] Preferably, one end of the emergency blood drawing catheter is provided with a first connector for connecting to the side branch tube of the venous chamber; the emergency blood return line further includes a saline access catheter, one end of the saline access catheter is provided with a saline bottle cannula for inserting into a physiological saline bottle, and the other end of the saline access catheter is provided with a second connector matching the first connector, and the second connector and the first connector can be connected or separated from each other. Further, a first catheter clamp that can be tightened or loosened is provided on the emergency blood drawing catheter; a protective sleeve is detachably sleeved outside the saline bottle cannula, and a second catheter clamp that can be tightened or loosened is provided on the saline access catheter.

[0011] Preferably, an emergency filter for filtering blood is provided inside the emergency venous pot, and an emergency side branch pipe for administering drugs is connected above the emergency venous pot.

[0012] Preferably, one end of the emergency blood return catheter is provided with a third connector, a protective sleeve is detachably connected above the third connector, and a cover body is installed at one end of the protective sleeve.

[0013] The beneficial effects of the present utility model are as follows: Since the present utility model is provided with an emergency blood return pipeline, the emergency blood return pipeline includes an emergency blood drawing catheter, an emergency venous pot and an emergency blood return catheter, the emergency venous pot has a blood input end and a blood output end, the emergency blood drawing catheter is connected to the blood input end of the emergency venous pot, and the emergency blood return catheter is connected to the blood output end of the emergency venous pot; Therefore, when the filter of the venous pot in the hemodialysis pipeline system is blocked, the emergency blood drawing catheter of the emergency blood return pipeline can be connected to the side branch pipe of the venous pot, so that the blood output from the dialyzer can flow back into the patient's body after passing through the emergency blood drawing catheter, the emergency venous pot and the emergency blood return catheter in sequence, thereby avoiding the problem of blood loss caused by the blockage of the venous pot filter and endangering the patient's life safety. Description of the Drawings

[0014] Figure 1 It is a schematic diagram of the overall structure of the emergency blood return pipeline.

[0015] Figure 2 It is a schematic diagram of the dispersed structure of the emergency blood return pipeline.

[0016] Figure 3 It is a schematic block diagram of the hemodialysis pipeline system when the emergency blood return pipeline is not connected.

[0017] Figure 4 It is a schematic block diagram of the hemodialysis pipeline system when the emergency blood return pipeline is connected. Detailed Description of the Invention

[0018] The structural principle and working principle of the present utility model will be further described in detail below with reference to the drawings. Embodiment 1

[0019] As Figure 1 and Figure 2 shown, this embodiment is an emergency blood return pipeline, including an emergency blood drawing catheter 1, an emergency venous pot 2 and an emergency blood return catheter 3. The emergency venous pot 2 has a blood input end 21 and a blood output end 22. The emergency blood drawing catheter 1 is connected to the blood input end 21 of the emergency venous pot 2, and the emergency blood return catheter 3 is connected to the blood output end 22 of the emergency venous pot 2. With reference to Figure 3 and Figure 4, when the filter of the venous chamber of the hemodialysis tubing system has a blockage problem, the emergency return blood tubing is quickly connected to the hemodialysis tubing system, so that the emergency blood drawing catheter 1 of the emergency return blood tubing is connected to the side branch tubing of the venous chamber, enabling the blood output from the dialyzer to flow back into the patient's body after passing through the emergency blood drawing catheter 1, the emergency venous chamber 2, and the emergency blood return catheter 3 in sequence. Thus, it can avoid the problem of the patient losing blood due to the blockage of the venous chamber filter and endangering the patient's life safety.

[0020] As Figure 1 and Figure 2 shown, one end of the emergency blood drawing catheter 1 is provided with a first connector 11; the emergency return blood tubing further includes a saline access catheter 4. One end of the saline access catheter 4 is provided with a saline bottle cannula 41 for inserting into a saline bottle, and the other end of the saline access catheter 4 is provided with a second connector 42 that matches the first connector 11, and the second connector 42 and the first connector 11 can be connected or separated from each other. A first catheter clamp 12 that can be tightened or loosened is provided on the emergency blood drawing catheter 1; a protective sleeve 43 is detachably sleeved outside the saline bottle cannula 41, and a second catheter clamp 44 that can be tightened or loosened is provided on the saline access catheter 4. An emergency filter 23 for filtering blood is provided inside the emergency venous chamber 2, an emergency side branch tubing 24 for administering drugs is connected to the emergency venous chamber 2, a third catheter clamp 25 that can be tightened or loosened is provided on the emergency side branch tubing 24, and a cap 26 is provided at the end of the emergency side branch tubing 24. One end of the emergency blood return catheter 3 is provided with a third connector 31, and a protective sleeve 5 is detachably connected to the third connector 31, and a cover body 51 is installed at one end of the protective sleeve 5. Embodiment 2

[0021] As Figure 3 and Figure 4 shown, with reference to Figure 1 and Figure 2, this embodiment is a hemodialysis tubing system, including a blood drawing catheter 6, a blood pump 7, an arterial chamber 8, a dialyzer 9, a venous chamber 10, and a blood return catheter 13. Under the pumping action of the blood pump 7, the blood of the patient 100 can flow back into the patient 100's body after passing through the blood drawing catheter 6, the blood pump 7, the arterial chamber 8, the dialyzer 9, the venous chamber 10, and the blood return catheter 13 in sequence, and blood purification is completed in the dialyzer 9; a filter for filtering blood is provided inside the venous chamber 10, and a side branch tube 101 for administering drugs is connected above the venous chamber 10; the hemodialysis system further includes an emergency blood return line, which includes an emergency blood drawing catheter 1, an emergency venous chamber 2, and an emergency blood return catheter 3. The emergency venous chamber 2 has a blood input end 21 and a blood output end 22. The emergency blood drawing catheter 1 is connected to the blood input end 21 of the emergency venous chamber 2, and the emergency blood return catheter 3 is connected to the blood output end 22 of the emergency venous chamber 2; the emergency blood drawing catheter 1 is connected to or separated from the side branch tube 101. When the emergency blood drawing catheter 1 is connected to the side branch tube 101, the blood output from the dialyzer 9 can flow back into the patient 100's body after passing through the emergency blood drawing catheter 1, the emergency venous chamber 2, and the emergency blood return catheter 3 in sequence.

[0022] As Figure 3 and Figure 4 shown, the hemodialysis tubing system further includes a dialysate monitoring and alarm system 14 and a dialysate supply system 15. The dialysis concentrate and dialysis water are formulated into qualified dialysate through the dialysate supply system 15, and through the hemodialyzer 9, solute diffusion, osmosis, and ultrafiltration effects are carried out with the patient's blood drawn out by the blood monitoring and alarm system 14; the patient's blood after the action returns to the patient's body through the blood monitoring and alarm system 14, and at the same time, the used liquid after dialysis is discharged by the dialysate supply system 15 as waste liquid; continuously circulating, the entire dialysis process is completed.

[0023] As Figure 1 and Figure 2As shown in the figure, one end of the emergency blood-drawing catheter 1 is provided with a first connector 11 for connecting to the side branch pipe 101 of the venous pot 10; the emergency blood-return pipeline further includes a saline access catheter 4. One end of the saline access catheter 4 is provided with a saline bottle insertion tube 41 for inserting into a physiological saline bottle. The other end of the saline access catheter 4 is provided with a second connector 42 that matches the first connector 11, and the second connector 42 and the first connector 11 can be connected to or separated from each other. A first catheter clamp 12 that can be tightened or loosened is provided on the emergency blood-drawing catheter 1; a protective sleeve 43 is detachably sleeved outside the saline bottle insertion tube 41, and a second catheter clamp 44 that can be tightened or loosened is provided on the saline access catheter 4. An emergency filter 23 for filtering blood is provided inside the emergency venous pot 2. An emergency side branch pipe 24 for administering medicine is connected to the emergency venous pot 2. A third catheter clamp 25 that can be tightened or loosened is provided on the emergency side branch pipe 24, and a cap 26 is provided at the end of the emergency side branch pipe 24. One end of the emergency blood-return catheter 3 is provided with a third connector 31, and a protective sleeve 5 is detachably connected to the third connector 31. A cover body 51 is installed at one end of the protective sleeve 5.

[0024] During the normal hemodialysis process of the present utility model, the emergency blood-return pipeline does not need to be connected to the hemodialysis pipeline system, and the emergency blood-return pipeline is in a standby state. When a filter blockage occurs in the venous pot 10 of the hemodialysis pipeline system, the usage method of the emergency blood-return pipeline of the present utility model is as follows:

[0025] (1) Remove the protective sleeve 43 outside the saline bottle insertion tube 41 of the saline access catheter 4, insert the saline bottle insertion tube 41 into the physiological saline bottle, and loosen the first catheter clamp 12 and the second catheter clamp 44 respectively, and open the cover body 51 of the protective sleeve 5. At this time, the physiological saline in the physiological saline bottle will flow out after passing through the saline access catheter 4, the emergency blood-drawing catheter 1, the emergency venous pot 2, and the emergency blood-return catheter 3 in sequence, and fill the emergency blood-return pipeline with physiological saline;

[0026] (2) Clamp the saline access catheter 4 with the second catheter clamp 44 on the saline access catheter 4, and clamp the emergency blood-drawing catheter 1 with the first catheter clamp 12 on the emergency blood-drawing catheter 1, so that the physiological saline in the emergency blood-return pipeline no longer flows outwards;

[0027] (3) Separate the second connector 42 on the saline access catheter 4 from the first connector 11 of the emergency blood-drawing catheter 1;

[0028] (4) Connect the first connector 11 of the emergency blood-drawing catheter 1 of the emergency blood-return pipeline to the side branch pipe 101 of the venous pot 10, and remove the protective sleeve 5 of the emergency blood-return catheter 3 of the emergency blood-return pipeline from the third connector 31;

[0029] (5) Disconnect the blood return catheter 13 of the hemodialysis tubing system from the catheter interface on the patient, and then connect the third joint 31 of the emergency blood return catheter 3 of the emergency blood return line to the catheter interface on the patient;

[0030] (6) Loosen the first catheter clamp 12 on the emergency blood drawing catheter 1. At this time, the physiological saline in the emergency blood return line gradually flows into the patient's body, and the blood also returns to the patient's body through the emergency blood return line.

[0031] The above is only a preferred embodiment of the present invention. Any minor modifications, equivalent changes, and modifications made to the above embodiments based on the technical solution of the present invention are all within the scope of the technical solution of the present invention.

Claims

1. An emergency return blood vessel pathway, characterized in that: It includes an emergency blood drawing catheter, an emergency venous chamber, and an emergency blood return catheter. The emergency venous chamber has a blood input end and a blood output end. The emergency blood drawing catheter is connected to the blood input end of the emergency venous chamber, and the emergency blood return catheter is connected to the blood output end of the emergency venous chamber.

2. The emergency return blood vessel according to claim 1, characterized in that: One end of the emergency blood drawing catheter is provided with a first connector; the emergency blood return line further includes a saline access catheter. One end of the saline access catheter is provided with a saline bottle cannula for inserting into a saline bottle, and the other end of the saline access catheter is provided with a second connector matching the first connector, and the second connector and the first connector can be connected or separated from each other.

3. The emergency return blood vessel according to claim 2, wherein: A first adjustable catheter clamp is provided on the emergency blood drawing catheter; a protective sleeve is detachably sleeved outside the saline bottle cannula, and a second adjustable catheter clamp is provided on the saline access catheter.

4. The emergency return blood vessel according to claim 1, characterized in that: An emergency filter for filtering blood is provided inside the emergency venous chamber. An emergency side branch tube for drug administration is connected to the emergency venous chamber. A third adjustable catheter clamp is provided on the emergency side branch tube, and a cap is provided at the end of the emergency side branch tube.

5. The emergency return blood vessel according to claim 1, wherein: One end of the emergency blood return catheter is provided with a third connector, and a protective sleeve is detachably connected to the third connector, and a cover body is installed at one end of the protective sleeve.

6. A hemodialysis tubing system includes a blood drawing catheter, a blood pump, an arterial chamber, a dialyzer, a venous chamber, and a blood return catheter. Under the pumping action of the blood pump, the patient's blood can flow back into the patient's body after passing through the blood drawing catheter, the blood pump, the arterial chamber, the dialyzer, the venous chamber, and the blood return catheter in sequence, and blood purification is completed in the dialyzer. A filter for filtering blood is provided inside the venous chamber, and a side branch tube for administering drugs is connected to the venous chamber. It is characterized in that: The hemodialysis system further includes an emergency blood return line. The emergency blood return line includes an emergency blood drawing catheter, an emergency venous chamber, and an emergency blood return catheter. The emergency venous chamber has a blood input end and a blood output end. The emergency blood drawing catheter is connected to the blood input end of the emergency venous chamber, and the emergency blood return catheter is connected to the blood output end of the emergency venous chamber; the emergency blood drawing catheter and the side branch tube can be connected or separated from each other. When the emergency blood drawing catheter and the side branch tube are connected to each other, the blood output from the dialyzer can flow back into the patient's body after passing through the emergency blood drawing catheter, the emergency venous chamber, and the emergency blood return catheter in sequence.

7. The hemodialysis tubing system according to claim 6, wherein: One end of the emergency blood drawing catheter is provided with a first connector for connecting to the side branch tube of the venous chamber; the emergency blood return line further includes a saline access catheter. One end of the saline access catheter is provided with a saline bottle cannula for inserting into a saline bottle, and the other end of the saline access catheter is provided with a second connector matching the first connector, and the second connector and the first connector can be connected or separated from each other.

8. The hemodialysis tubing system according to claim 7, characterized in that: A first adjustable catheter clamp is provided on the emergency blood drawing catheter; a protective sleeve is detachably sleeved outside the saline bottle cannula, and a second adjustable catheter clamp is provided on the saline access catheter.

9. The hemodialysis tubing system according to claim 6, characterized in that: An emergency filter for filtering blood is provided inside the emergency venous chamber. An emergency side branch tube for drug administration is connected to the emergency venous chamber. A third adjustable catheter clamp is provided on the emergency side branch tube, and a cap is provided at the end of the emergency side branch tube.

10. The hemodialysis tubing system according to claim 6, wherein: One end of the emergency blood return catheter is provided with a third connector, and a protective sleeve is detachably connected to the third connector, and a cover body is installed at one end of the protective sleeve.

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