CN220158878U - Continuous blood purifying pipeline - Google Patents

Abstract

The utility model provides a continuous blood purifying pipeline, and belongs to the technical field of blood purifying treatment. The T-shaped tee joint is adopted in the fluid supplementing branch pipe on the existing arterial tube, and the problem that the flow direction of replacement fluid is impacted with blood during front-back dilution, so that resistance is generated to the flow of blood cells, and the blood cells are damaged is solved. The device comprises a dynamic tube, a static tube, a replacement liquid tube and a filtrate tube, wherein the outlet end of the filtrate tube is connected with a waste liquid bag, a first branch tube and a second branch tube are connected to the replacement liquid tube, a first connecting tube connected with the first branch tube is connected to the dynamic tube through a first Y-shaped tee joint, a first flow stopping clamp is arranged on the first connecting tube, a second connecting tube connected with the second branch tube through a second Y-shaped tee joint is connected to the static tube, and a second flow stopping clamp is arranged on the second connecting tube. Because the Y-shaped tee joint is adopted, the flow direction of the replacement liquid is consistent with that of blood when the replacement liquid is supplemented, and the damage of blood cells caused by vertical confluence of the liquid is reduced, so that the risk of coagulation is reduced.

Description

Continuous blood purifying pipeline

Technical Field

The utility model belongs to the technical field of blood purification treatment, relates to a consumable product for continuous blood purification treatment, and particularly relates to a pipeline for continuous blood purification.

Background

Continuous blood purification (Continuous Renal Replacement Therapy, CRRT) is a therapeutic approach to achieve continuous dialysis and blood purification with filters by continuous drainage and reinfusion of the patient's blood. Compared with the traditional intermittent dialysis treatment, the continuous blood purification has a milder and slower treatment mode, can better protect the kidney and cardiovascular system of a patient, and is suitable for treating severe diseases such as acute renal failure, multiple organ dysfunction and the like. In addition, the continuous blood purification can be flexibly adjusted and changed according to the specific condition of the patient, so that the continuous blood purification device is widely applied to the treatment of critically ill patients. The continuous blood pipeline mainly comprises arterial tube, venous tube, replacement liquid tube, filtrate tube, fluid supplementing tube, etc. Wherein, the fluid infusion tube can be used for conveying anticoagulant, sodium bicarbonate solution and other solutions. Arterial lines direct the blood out of the body and into filters, such as dialyzers, perfusion devices, plasma separators, plasma component separators, filters, etc., to remove pathogenic agents, moisture, toxic substances, metabolic waste, etc., from the blood. The purified blood is returned to the human body through the venous line. The dialysate enters the dialyzer through the replacement liquid pipe, and the blood purification effect is realized by utilizing the dispersion, convection and adsorption principles. The replacement fluid tube can also deliver replacement fluid to maintain the balance of electrolytes and acids and bases in the blood.

The T-shaped tee joint component is adopted as a fluid supplementing branch pipe on an arterial tube of a continuous blood purifying pipeline sold in the market at present, a Y-shaped tee joint adopted as a post-dilution fluid supplementing branch pipe of an arterial tube is in a reverse blood flow direction, and the direction of a replacement fluid is impacted with blood when the replacement fluid is diluted front and back in a continuous venous-venous hemodialysis treatment mode and a continuous venous-venous hemodiafiltration treatment mode, so that the flow rate of the replacement fluid and the flow rate of the blood are large, and the resistance to the flow of blood cells can be generated due to the hydrodynamic reasons, so that the blood cells are damaged, and the blood coagulation is easier to cause.

At present, an inserted one-way valve is adopted in the continuous blood purifying pipeline, and cyclohexanone adhesive is used for connecting the pipeline. In the transportation process, liquid leakage is easy to occur due to folding. Once a problem occurs, the whole set of pipelines needs to be abandoned, which causes waste and high cost. Furthermore, cyclohexanone remains when the inserted one-way valve is used for bonding, and cyclohexanone is a chemical solvent, is harmful to organisms, and mainly inhibits lymphocyte transformation and damages erythrocyte hemolysis.

The puncture needle of the common blood purification pipeline in the market is independently matched with the pipeline, when in clinical use, nurses need to connect the puncture needle with arterial tubes, fluid infusion tubes and replacement fluid tubes of the pipeline and insert physiological saline and replacement fluid, 6 operation steps are intangibly added when the pipeline is connected, and when in hospital treatment, due to the fact that patients are numerous, the prefilling time is longer, the connecting time occupies a long time, and the workload of nurses and the waiting time of patients are increased.

The coil heating assembly of the continuous blood purifying pipeline in the market adopts a lower-inlet upper-outlet coil structure, bubbles can exist in the middle of the pipeline due to the gravity of liquid, the bubbles in the replacement liquid pipe cannot be removed due to the fact that a degassing kettle is not arranged at the outlet end of the heating device, the bubbles can be diluted and mixed with blood before and after flowing the liquid, and the replacement liquid can be mixed with the blood due to the heating and gravity effects, so that thrombus is formed.

Disclosure of Invention

The present utility model has been made in view of the above problems occurring in the prior art, and an object of the present utility model is to provide a continuous blood purification tube which can reduce the risk of coagulation.

The aim of the utility model can be achieved by the following technical scheme:

the utility model provides a pipeline is used in continuity blood purification, includes the arterial tube that the exit end is connected with the import of filter, the venous tube that the entry end is connected with the export of filter, the replacement liquid pipe that the exit end is connected with the import of filter two, and the filtrate pipe that the entry end is connected with the export of filter two, the exit end and the waste liquid bag of filtrate pipe are connected, be connected with first branch pipe and second branch pipe on the replacement liquid pipe, be connected with the first takeover with first branch pipe connection through first Y type tee bend on the arterial tube, be equipped with first stagnant flow clamp on the first takeover, be connected with the second takeover with second branch pipe connection through second Y type tee bend on the venous tube, be equipped with second stagnant flow clamp on the second takeover.

The first branch pipe is connected with the first connecting pipe and used for diluting and supplementing replacement liquid before the arterial tube, and the second branch pipe is connected with the second connecting pipe and used for diluting and supplementing replacement liquid after the arterial tube. The first connecting pipe is connected with the arterial tube through the first Y-shaped tee joint, and the second connecting pipe is connected with the venous tube through the second Y-shaped tee joint, so that the flow direction of the replacement liquid is consistent with that of blood during replacement liquid supplementing, the damage of blood cells caused by vertical confluence of the liquid is reduced, and the risk of coagulation is reduced.

In the continuous blood purification pipeline, the outlet end of the first branch pipe is provided with a first rotary joint, a first threaded one-way valve is connected at the first rotary joint in a threaded manner, the inlet end of the first connecting pipe is provided with a first wing type rotary joint, and the outlet end of the first threaded one-way valve is connected with the first wing type rotary joint; the outlet end of the second branch pipe is provided with a second rotary joint, a second threaded one-way valve is connected at the second rotary joint in a threaded manner, the inlet end of the second connecting pipe is provided with a second wing type rotary joint, and the outlet end of the second threaded one-way valve is connected with the second wing type rotary joint.

The first thread type check valve and the second thread type check valve can effectively prevent blood from flowing backwards, and meanwhile, the connection mode of threads is adopted, so that connection and disassembly are convenient, and replacement is facilitated. In addition, when using, the pipeline still is equipped with reserve check valve in order to deal with the abnormal conditions to reduce consumable utilization ratio and clinical use risk.

In the above-mentioned continuous blood purification line, the first pump pipe, the heating coil pipe, and the second pump pipe that set up in order along the direction of conveyance are connected in series on the replacement liquid pipe, be equipped with the degasification kettle between heating coil pipe and the second pump pipe.

Due to the degassing kettle, bubbles generated by the temperature rise of the replacement liquid can be removed, so that the bubbles can be prevented from entering the blood when the replacement liquid is mixed with the blood, and thrombus is prevented from being formed.

In the above-described continuous blood purification tube, the first branch pipe is connected to the replacement liquid pipe through a first T-tee, and the second branch pipe is connected to the first branch pipe through a third Y-tee; the first branch pipe is also provided with a second T-shaped tee joint, the replacement liquid pipe is provided with a fourth Y-shaped tee joint, the second T-shaped tee joint is connected with the fourth Y-shaped tee joint through a third connecting pipe, and the second pump pipe is positioned between the fourth Y-shaped tee joint and the first T-shaped tee joint.

Since the second branch pipe is provided on the first branch pipe, the second branch pipe branches off a part of the replacement liquid, possibly causing insufficient supply of the replacement liquid in the first branch pipe. Through the third connecting pipe, the replacement liquid can be conveyed to the first branch pipe through the third connecting pipe under the action of the pump impeller of the liquid pump acting on the second pump pipe, and the stable supply of the replacement liquid in the first branch pipe is ensured.

In the above-mentioned continuity is pipeline for blood purification, it has the third pump line to establish ties on the arterial, the both ends of third pump line are equipped with tee bend pump line joint respectively, all are connected with the fourth takeover on every tee bend pump line joint, be equipped with the third on the fourth takeover and stop the flow clamp, and the one end that the tee bend pump line joint was kept away from to the fourth takeover is equipped with the third wing rotary joint.

Anticoagulant/heparin may be added to the arterial vessel through a fourth adapter.

In the above-mentioned continuity is pipeline for blood purification, still include the fluid replacement pipe, be equipped with fourth flow stopping clamp and the fourth pump line that sets gradually along direction of delivery on the fluid replacement pipe, the exit end of fluid replacement pipe is equipped with third rotary joint, third screw thread check valve is installed to third rotary joint department, the entrance point of fluid replacement pipe is equipped with fourth rotary joint, fourth rotary joint has first pjncture needle through fourth wing formula rotary joint.

In the continuous blood purification pipeline, a fifth rotary joint is arranged at the inlet end of the arterial tube, and a second puncture needle is arranged on the fifth rotary joint through a fifth wing-type rotary joint; the inlet end of the replacement liquid pipe is provided with a sixth rotary joint, and the sixth rotary joint is provided with a third puncture needle through a sixth wing type rotary joint.

During clinical pre-filling, the second puncture needle can be directly inserted into the physiological saline container, and the third puncture needle can be directly inserted into the replacement liquid container, so that the operation steps of a nurse before treatment are reduced, the clinical use is convenient, and the treatment efficiency is improved.

In the continuous blood purification pipeline, a fifth connecting pipe is connected to the filtrate pipe through a third T-shaped tee, a fifth flow stopping clamp is arranged on the fifth connecting pipe, and a seventh wing type rotary joint is arranged at one end of the fifth connecting pipe far away from the third T-shaped tee; the outlet end of the intravenous tube is provided with a seventh rotary joint, the seventh rotary joint is provided with a sixth connecting tube through an eighth wing type rotary joint, a sixth flow stopping clamp is arranged on the sixth connecting tube, and the outlet end of the sixth connecting tube is provided with an eighth rotary joint used for being connected with the seventh wing type rotary joint.

In the continuous blood purification pipeline, a fifth Y-shaped tee joint is arranged on the sixth connecting pipe, a venous calcium liquid connecting pipe is connected to the fifth Y-shaped tee joint, a seventh flow stopping clamp and a fifth pump pipe are sequentially arranged on the venous calcium liquid connecting pipe along the liquid conveying direction, and a ninth wing type rotary joint is arranged at the inlet end of the venous calcium liquid connecting pipe.

In the above-described continuous blood purification line, a ninth rotary joint is provided at an outlet end of the substitution liquid tube, and the ninth rotary joint is connected to a first dialyzer joint through a tenth wing type rotary joint; the inlet end of the filtrate pipe is provided with a tenth rotary joint, and the tenth rotary joint is connected with a second dialyzer joint through an eleventh wing type rotary joint. Making it compatible with filters of different interfaces on the market.

Compared with the prior art, the continuous blood purifying pipeline has the following advantages:

the first connecting pipe is connected with the arterial tube through the first Y-shaped tee joint, and the second connecting pipe is connected with the venous tube through the second Y-shaped tee joint, so that the flow direction of the replacement liquid is consistent with that of blood during replacement liquid supplementing, the damage of blood cells caused by vertical liquid merging is reduced, and the risk of coagulation is reduced; screw-thread one-way valves are arranged at the outlet ends of the first branch pipe, the second branch pipe and the fluid infusion pipe, so that the backflow of blood can not be prevented, and the disassembly and the assembly are convenient; the detachable puncture needles are arranged at the inlet end of the arterial tube, the inlet end of the replacement liquid tube and the inlet end of the fluid infusion tube, and the physiological saline or the replacement liquid container can be directly inserted during clinical pre-filling, so that the operation steps of nurses before treatment are reduced, the clinical use is convenient, and the treatment efficiency is improved; the degassing kettle is added at the outlet end of the heating coil, so that bubbles generated by the temperature rise of the replacement liquid can be removed, the bubbles are prevented from entering the blood when the replacement liquid is mixed with the blood, and the thrombus is prevented from being formed; luer quick-release connectors are added at the connection ends of the replacement liquid pipe, the filtrate pipe and the filter, so that the filter can be compatible with filters with different interfaces in the market; the interface of the sensor protector and the interface of the pressure detection equipment are compatible in design, and the sensor protector is directly clamped without rotating when connected, so that the coagulation caused by air leakage entering blood during pressure monitoring is prevented.

Drawings

Fig. 1 is a schematic diagram of an arterial tube according to the present utility model.

Fig. 2 is a schematic structural view of an intravenous tube provided by the present utility model.

Fig. 3 is a schematic structural view of a replacement liquid tube provided by the utility model.

Fig. 4 is a schematic structural view of a filtrate pipe according to the present utility model.

Fig. 5 is a schematic structural diagram of the fluid infusion tube provided by the utility model.

Fig. 6 is a schematic structural view of a continuous blood purification tube.

In the figure, a filter; 1. arterial tube; 2. venous vessel; 3. a replacement liquid pipe; 4. a filtrate pipe; 5. a waste liquid bag; 6. a first branch pipe; 7. a second branch pipe; 8. a first Y-shaped tee; 9. a first connection pipe; 10. a first stop clip; 11. a second Y-shaped tee; 12. a second connection pipe; 13. a second stop clip; 14. a first rotary joint; 15. a first threaded one-way valve; 16. a first wing rotary joint; 17. a second rotary joint; 18. a second threaded one-way valve; 19. a second wing rotary joint; 20. a first pump tube; 21. a heating coil; 22. a second pump tube; 23. a degassing kettle; 24. a first T-tee; 25. a third Y-shaped tee; 26. a second T-tee; 27. a fourth Y-shaped tee; 28. a third connection pipe; 29. a third pump tube; 30. a three-way pump pipe joint; 31. a fourth connection pipe; 32. a third stop clip; 33. a third wing type rotary joint; 34. a fluid supplementing pipe; 35. a fourth stop clip; 36. a fourth pump tube; 37. a third rotary joint; 38. a third threaded one-way valve; 39. a fourth rotary joint; 40. a fourth wing rotary joint; 41. a first puncture needle; 42. a fifth rotary joint; 43. a fifth wing-type rotary joint; 44. a second puncture needle; 45. a sixth rotary joint; 46. a sixth wing type rotary joint; 47. a third puncture needle; 48. a third T-tee; 49. a fifth connecting pipe; 50. a fifth stop clip; 51. a seventh wing type rotary joint; 52. a seventh rotary joint; 53. an eighth wing type rotary joint; 54. a sixth connection pipe; 55. a sixth stop clip; 56. an eighth rotary joint; 57. a fifth Y-shaped tee; 58. venous calcium fluid connection; 59. a seventh stop clip; 60. a fifth pump tube; 61. a ninth wing type rotary joint; 62. a ninth rotary joint; 63. a tenth wing type rotary joint; 64. a first dialyzer connection; 65. a tenth rotary joint; 66. an eleventh wing-type rotary joint; 67. a second dialyzer connection; 68. a twelfth wing type rotary joint; 69. a membrane pressure sensor; 70. an eighth stop clip; 71. thirteenth wing type rotary joint; 72. a sensor protector.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

Continuous Renal Replacement Therapy (CRRT) is a continuous blood purification technique that includes continuous venous-venous hemofiltration (CVVH), continuous venous-venous hemodialysis (CVVHD), continuous venous-venous hemodiafiltration (CVVHDF), slow Continuous Ultrafiltration (SCUF), and other treatment modalities. Before the start of blood drawing, the whole extracorporeal circulation system (a pipeline and a filter) is pre-filled with normal saline so as to exhaust bubbles in the system and avoid serious air embolism after the blood drawing.

The continuous blood purification line shown in fig. 6 includes an arterial tube 1, a venous tube 2, a substitution liquid tube 3, a filtrate tube 4, and a fluid infusion tube 34, wherein the outlet end of the arterial tube 1 is connected to the inlet of the filter a, the inlet end of the venous tube 2 is connected to the outlet of the filter a, the outlet end of the substitution liquid tube 3 is connected to the inlet of the filter a, the inlet end of the filtrate tube 4 is connected to the outlet of the filter a, the inlet of the filter a is communicated with the outlet of the first, and the inlet of the filter a is communicated with the outlet of the second.

As shown in fig. 1, the inlet end of the arterial tube 1 is provided with a fifth rotary joint 42, the fifth rotary joint 42 is provided with a second puncture needle 44 through a fifth wing type rotary joint 43, the outlet end of the arterial tube 1 is provided with a twelfth wing type rotary joint 68 which is convenient to connect with the inlet end of the filter a, and the arterial tube 1 is provided with an eighth flow stopping clip 70. As shown in fig. 1, a membrane type pressure sensor 69, a third pump pipe 29, a first Y-shaped tee joint 8 and a membrane type pressure sensor 69 are sequentially connected in series on the arterial tube 1 along the liquid conveying direction, a first connecting tube 9 is connected to the first Y-shaped tee joint 8, a first flow stopping clamp 10 is arranged on the first connecting tube 9, and a first wing type rotary joint 16 is arranged at the inlet end of the first connecting tube 9. The flow direction of the replacement liquid is consistent with that of blood when the replacement liquid is supplemented, so that the damage of blood cells caused by vertical confluence of the liquid is reduced, and the risk of coagulation is reduced.

The two ends of the third pump pipe 29 are respectively connected to the arterial tube 1 through three-way pump pipe joints 30, each three-way pump pipe joint 30 is connected with a fourth connecting pipe 31, a third flow stopping clamp 32 is arranged on each fourth connecting pipe 31, one end, far away from the three-way pump pipe joint 30, of each fourth connecting pipe 31 is provided with a third wing type rotary joint 33, an anticoagulant can be added into the arterial tube 1 through the fourth connecting pipe 31 located at the upstream, and heparin can be added into the arterial tube 1 through the fourth connecting pipe 31 located at the downstream.

In this embodiment, anticoagulant is added to arterial line 1 through fluid replacement line 34. As shown in fig. 5, a fourth flow stop clip 35 and a fourth pump tube 36 which are sequentially arranged along the conveying direction are arranged on the fluid infusion tube 34, a third rotary joint 37 is arranged at the outlet end of the fluid infusion tube 34, a third threaded one-way valve 38 is arranged at the third rotary joint 37, a fourth rotary joint 39 is arranged at the inlet end of the fluid infusion tube 34, the fourth rotary joint 39 is provided with a first puncture needle 41 through a fourth wing-type rotary joint 40, and the first puncture needle 41 can be quickly connected with an anticoagulant fluid bag.

As shown in fig. 2, the inlet end of the intravenous tube 2 is provided with a tenth wing type rotary joint 71, which is convenient to connect with the outlet end of the filter a. The venous tube 2 is provided with a second Y-shaped tee joint 11, the second Y-shaped tee joint 11 is connected with a second connecting tube 12 connected with the replacement liquid tube 3, the second connecting tube 12 is provided with a second flow stopping clamp 13, and the inlet end of the second connecting tube 12 is provided with a second wing type rotary joint 19. The flow direction of the replacement liquid is consistent with that of blood when the replacement liquid is supplemented, so that the damage of blood cells caused by vertical confluence of the liquid is reduced, and the risk of coagulation is reduced.

As shown in fig. 2, the intravenous tube 2 is provided with a flow stop clip, the outlet end of the intravenous tube 2 is provided with a seventh rotary joint 52, the seventh rotary joint 52 is provided with a sixth connecting tube 54 through an eighth wing rotary joint 53, the sixth connecting tube 54 is provided with a sixth flow stop clip 55, and the outlet end of the sixth connecting tube 54 is provided with an eighth rotary joint 56 for connecting with the seventh wing rotary joint 51.

As shown in fig. 2, a fifth Y-shaped tee 57 is provided on the sixth connection tube 54, a venous calcium liquid connection tube 58 is connected to the fifth Y-shaped tee 57, a seventh flow stop clip 59 and a fifth pump tube 60 are sequentially provided on the venous calcium liquid connection tube 58 along the liquid conveying direction, and a ninth wing type rotary joint 61 is provided at the inlet end of the venous calcium liquid connection tube 58.

As shown in fig. 2, the venous tube 2 is connected to a sensor protector 72 via a connection tube, and a flow stop clip is provided on the connection tube. The interface of the sensor protector 72 is designed to be compatible with the interface of the pressure detection device, and the interface is directly clamped without rotation when connected, so that the coagulation caused by air leakage entering blood during pressure monitoring is prevented.

As shown in fig. 3, the outlet end of the substitution liquid pipe 3 is provided with a ninth rotary joint 62, and the ninth rotary joint 62 is connected to a first dialyzer joint 64 via a tenth wing rotary joint 63. The inlet end of the replacement liquid pipe 3 is provided with a sixth rotary joint 45, and the sixth rotary joint 45 is provided with a third puncture needle 47 through a sixth wing-type rotary joint 46. During clinical pre-filling, the third puncture needle 47 is directly inserted into the replacement fluid container, so that the operation steps of nurses before treatment are reduced, the clinical use is convenient, and the treatment efficiency is improved.

The replacement liquid pipe 3 is connected with a first branch pipe 6 and a second branch pipe 7, the first branch pipe 6 is connected with a first connecting pipe 9 for diluting replacement liquid before the arterial tube 1, and the second branch pipe 7 is connected with a second connecting pipe 12 for diluting replacement liquid after the arterial tube 2. Specifically, as shown in fig. 3, the first branch pipe 6 is connected to the replacement liquid pipe 3 through a first T-tee 24, and the second branch pipe 7 is connected to the first branch pipe 6 through a third Y-tee 25; the first branch pipe 6 is also provided with a second T-shaped tee joint 26, the replacement liquid pipe 3 is provided with a fourth Y-shaped tee joint 27, the second T-shaped tee joint 26 is connected with the fourth Y-shaped tee joint 27 through a third connecting pipe 28, and the second pump pipe 22 is positioned between the fourth Y-shaped tee joint 27 and the first T-shaped tee joint 24.

As shown in fig. 3, the outlet end of the first branch pipe 6 is provided with a first rotary joint 14, a first threaded check valve 15 is connected at the first rotary joint 14 in a threaded manner, and the outlet end of the first threaded check valve 15 is connected with a first wing rotary joint 16. As shown in fig. 3, the outlet end of the second branch pipe 7 is provided with a second rotary joint 17, a second threaded check valve 18 is connected at the second rotary joint 17 in a threaded manner, the inlet end of the second connecting pipe 12 is provided with a second wing type rotary joint 19, and the outlet end of the second threaded check valve 18 is connected with the second wing type rotary joint 19.

The first thread type check valve 15 and the second thread type check valve 18 can effectively prevent blood backflow, and meanwhile, the connection mode of threads is adopted, so that connection and disassembly are convenient, and replacement is facilitated. In addition, when using, the pipeline still is equipped with reserve check valve in order to deal with the abnormal conditions to reduce consumable utilization ratio and clinical use risk.

As shown in fig. 3, the replacement liquid pipe 3 is connected in series with a first pump pipe 20, a heating coil 21, and a second pump pipe 22 which are sequentially arranged in the conveying direction, and a degassing kettle 23 is provided between the heating coil 21 and the second pump pipe 22. Due to the degassing kettle 23, bubbles generated by the temperature rise of the replacement liquid can be removed, so that the bubbles can be prevented from entering the blood when the replacement liquid is mixed with the blood, and thrombus is prevented from being formed.

Since the second branch pipe 7 is provided on the first branch pipe 6, the second branch pipe 7 branches off a part of the replacement liquid, possibly causing a shortage of the replacement liquid in the first branch pipe 6. By means of the third connecting pipe 28, the displacement fluid can be conveyed to the first branch pipe 6 by the third connecting pipe 28 under the action of the pump impeller of the liquid pump acting on the second pump pipe 22, so that stable supply of the displacement fluid in the first branch pipe 6 is ensured.

As shown in fig. 4, the inlet end of the filtrate pipe 4 is provided with a tenth rotary joint 65, the tenth rotary joint 65 is connected with a second dialyzer joint 67 through an eleventh wing-type rotary joint 66, and the outlet end of the filtrate pipe 4 is connected with the waste liquid bag 5. Which is compatible with filters a of different interfaces on the market.

As shown in fig. 4, the filtrate pipe 4 is connected with a fifth connecting pipe 49 through a third T-shaped tee 48, a fifth flow stop clip 50 is arranged on the fifth connecting pipe 49, and a seventh wing type rotary joint 51 is arranged at one end of the fifth connecting pipe 49 away from the third T-shaped tee 48, so that the connection with an eighth rotary joint 56 is facilitated.

When the priming machine is used for priming, the second puncture needle 44 on the arterial tube 1 is connected with physiological saline containing heparin for priming, the physiological saline is input to the twelfth wing type rotary joint 68 through the rotation of the pump impeller of the blood pump to be connected with the filter a (dialyzer, filter and the like), the outlet of the physiological saline is connected with the rotary joint at the inlet of the venous tube 2 after the physiological saline is filled with the filter a, the physiological saline is output to the outlet end of the venous tube 2 and then is connected with the filtrate tube 4 through the eighth rotary joint 56 and the seventh wing type rotary joint 51 to form a closed blood circuit, and the channel is a blood circuit channel during priming.

The replacement liquid bag is connected with a third puncture needle 47 (bottle inserting needle) at the inlet end of the replacement liquid pipe 3, the replacement liquid is input into the heating coil 21 through the cooperation of the first pump pipe 20 and the pump wheel of the LP1 liquid pump, bubbles in the replacement liquid are removed through the degassing kettle 23 after heating through the detection pipe, the replacement liquid is conveyed to the first rotary joint 14 through the first branch pipe 6, the first threaded check valve 15 is connected with the first wing type rotary joint 16 on the first connecting pipe 9, the replacement liquid is fed into the arterial tube 1, and the front dilution is carried out in the CVVH and CVVHDF modes. The heated replacement fluid may also be fed into the intravenous tube 2 through a second rotary joint 17 of the second branch tube 7, a second threaded check valve 18 connected to a second wing rotary joint 19 of the intravenous tube 2, and post-diluted in the CVVH and CVVHDF modes.

Under the action of the LP2 pump, the substitution fluid entering the second pump tube 22 is connected to the filter a (dialyzer, dialysis filter a, etc.) via a first dialyzer connection 64 at the ninth rotary connection 62, and the dialysis fluid is fed via the second dialyzer outlet to the first dialyzer connection 64 (dialyzer connection) of the filtrate tube 4, and the pump tube on the filtrate tube 4 cooperates with the UFP pump of the apparatus to feed the waste fluid into the waste fluid bag 5.

During treatment, toxic and harmful substances in blood are removed into the waste liquid bag 5 through the actions of convection, dispersion, pressure difference and the like of the dialysate and the blood, and during treatment, if a filter a (dialyzer) with a luer connector is encountered, the dialyzer connector can be detached, and the rotary connector is connected with the dialyzer with the luer connector, so that the compatibility is achieved. The channel is a liquid channel during the priming treatment.

In clinical treatment, if citric acid is selected for anticoagulation, the citric acid liquid bag is in butt joint with the first puncture needle 41 on the liquid supplementing tube 34, the citric acid is input to the third rotary joint 37 through the fourth pump tube 36 matched with the FP pump of the equipment, the third threaded check valve 38 of the third rotary joint is connected with the third wing-type rotary joint 33 of the arterial tube 1, and the citric acid is mixed with blood for anticoagulation during treatment. On the other hand, the filled calcium liquid in the injector is connected with a ninth wing type rotary joint 61 at the connecting pipe of the calcium liquid through the vein, and is mixed with the tail end of the vein tube 2 after passing through the bubble detecting tube to supplement calcium ions of the human body, and the channel is a citric acid anticoagulation channel.

If heparin anticoagulation is selected, the third winged rotary joint 33 downstream of the heparin-containing syringe is connected and mixed with blood for anticoagulation during treatment. Simultaneously, a single channel of sodium bicarbonate can be selected for supplementing, a sodium bicarbonate liquid bag is in butt joint with a first puncture needle 41 on a liquid supplementing pipe 34, sodium bicarbonate is input to a third rotary joint 37 through a fourth pump pipe 36 matched with an FP pump of equipment, a third threaded one-way valve 38 of the third rotary joint is connected with a third wing type rotary joint 33 of an arterial tube 1, and pH in blood is regulated when sodium bicarbonate and blood are mixed for treatment, and the channel is a heparin anticoagulation channel.

The pipeline is specially designed for SWS-5000 equipment, and can carry out NaHCO3 single-channel input, mixed diluted heparin anticoagulation or mixed diluted citric acid anticoagulation under a CVVH mode; heparin anticoagulation or citric acid anticoagulation is input to a NaHCO3 single channel under a CVVHD mode; heparin anticoagulation with pre-or post-dilution of NaHCO3 single-channel input and heparin anticoagulation with mixed dilution without NaHCO3 single-channel input under CVVHDF mode. According to different patients, different treatment modes can be selected, so that the treatment requirement can be met, and no waste of pipelines can be caused.

The rotary joint and the wing rotary joint are male and female threaded luer joints, the left end and the right end of the threaded one-way valve and the sensor protector 72 are male and female threaded luer joints respectively, and the size of the luer joints meets the requirements of GB/T1962.2. The dialysis adapter size meets the requirements of the YY 0267 standard.

The third pump tube 29 of the arterial tube 1 is thicker than the other pump tubes, since the operating speed ranges of the peristaltic pumps to which these tubes are correspondingly fitted are different, the maximum operating speed of the blood pump being 2 times that of the latter.

Continuous blood purification pipeline material composition: the main pipe can be produced by extrusion processing, an injection molding piece or a connecting piece for connecting the pipe can be formed by injection molding, the main materials comprise PVC, PP, PE, ABS, PC, silica gel, TPFE and the like, and the connection between the injection molding piece and the pipe can be realized by bonding medical-grade liquid glue such as UV glue, epoxy glue and the like.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Claims (10)

1. The utility model provides a pipeline is used in continuity blood purification, includes arterial tube (1) that the exit end is connected with the import of filter (a), venous tube (2) that the entry end is connected with the export of filter (a), displacement liquid pipe (3) that the exit end is connected with the import of filter (a), and filtrate pipe (4) that the entry end is connected with the export of filter (a), the exit end and the waste liquid bag (5) of filtrate pipe (4) are connected, a serial communication port, be connected with first branch pipe (6) and second branch pipe (7) on displacement liquid pipe (3), be connected with first takeover (9) that are connected with first branch pipe (6) on arterial tube (1) through first Y tee bend (8), be equipped with first flow stop clamp (10) on first takeover (9), be connected with second (12) that are connected with second branch pipe (7) through second Y tee bend (11) on venous tube (2), be equipped with second flow stop clamp (13) on second takeover (12).

2. The continuous blood purification tube according to claim 1, wherein the outlet end of the first branch tube (6) is provided with a first rotary joint (14), a first threaded check valve (15) is screwed at the first rotary joint (14), the inlet end of the first connecting tube (9) is provided with a first wing rotary joint (16), and the outlet end of the first threaded check valve (15) is connected with the first wing rotary joint (16); the outlet end of the second branch pipe (7) is provided with a second rotary joint (17), a second threaded one-way valve (18) is connected at the second rotary joint (17) in a threaded manner, the inlet end of the second connecting pipe (12) is provided with a second wing type rotary joint (19), and the outlet end of the second threaded one-way valve (18) is connected with the second wing type rotary joint (19).

3. The continuous blood purification tube according to claim 1, wherein the replacement liquid tube (3) is connected in series with a first pump tube (20), a heating coil (21) and a second pump tube (22) which are sequentially arranged along the conveying direction, and a degassing kettle (23) is arranged between the heating coil (21) and the second pump tube (22).

4. The continuous blood purification line according to claim 1, wherein the first branch pipe (6) is connected to the substitution liquid pipe (3) through a first T-tee (24), and the second branch pipe (7) is connected to the first branch pipe (6) through a third Y-tee (25); the first branch pipe (6) is further provided with a second T-shaped tee joint (26), the replacement liquid pipe (3) is provided with a fourth Y-shaped tee joint (27), the second T-shaped tee joint (26) is connected with the fourth Y-shaped tee joint (27) through a third connecting pipe (28), and the second pump pipe (22) is located between the fourth Y-shaped tee joint (27) and the first T-shaped tee joint (24).

5. The continuous blood purification pipeline according to claim 1, wherein a third pump pipe (29) is connected in series to the arterial pipe (1), three-way pump pipe joints (30) are respectively arranged at two ends of the third pump pipe (29), a fourth connecting pipe (31) is connected to each three-way pump pipe joint (30), a third flow stopping clamp (32) is arranged on the fourth connecting pipe (31), and a third wing type rotary joint (33) is arranged at one end, far away from the three-way pump pipe joints (30), of the fourth connecting pipe (31).

6. The continuous blood purification pipeline according to claim 1, further comprising a fluid infusion tube (34), wherein a fourth flow stop clip (35) and a fourth pump tube (36) which are sequentially arranged along the conveying direction are arranged on the fluid infusion tube (34), a third rotary joint (37) is arranged at the outlet end of the fluid infusion tube (34), a third threaded check valve (38) is arranged at the third rotary joint (37), a fourth rotary joint (39) is arranged at the inlet end of the fluid infusion tube (34), and the fourth rotary joint (39) is provided with a first puncture needle (41) through a fourth wing-type rotary joint (40).

7. The continuous blood purification tube according to claim 1, wherein a fifth rotary joint (42) is provided at the inlet end of the arterial tube (1), and the fifth rotary joint (42) has a second puncture needle (44) through a fifth wing rotary joint (43); the inlet end of the replacement liquid pipe (3) is provided with a sixth rotary joint (45), and the sixth rotary joint (45) is provided with a third puncture needle (47) through a sixth wing-type rotary joint (46).

8. The continuous blood purification tube according to claim 1, wherein a fifth connection tube (49) is connected to the filtrate tube (4) through a third T-shaped tee (48), a fifth flow stop clip (50) is provided on the fifth connection tube (49), and a seventh wing type rotary joint (51) is provided at one end of the fifth connection tube (49) away from the third T-shaped tee (48); the outlet end of the vein tube (2) is provided with a seventh rotary joint (52), the seventh rotary joint (52) is provided with a sixth connecting tube (54) through an eighth wing type rotary joint (53), a sixth flow stopping clamp (55) is arranged on the sixth connecting tube (54), and the outlet end of the sixth connecting tube (54) is provided with an eighth rotary joint (56) used for being connected with the seventh wing type rotary joint (51).

9. The continuous blood purification tube according to claim 8, wherein a fifth Y-shaped tee (57) is provided on the sixth connection tube (54), a venous calcium fluid connection tube (58) is connected to the fifth Y-shaped tee (57), a seventh flow stop clip (59) and a fifth pump tube (60) are sequentially provided on the venous calcium fluid connection tube (58) along the fluid conveying direction, and a ninth wing type rotary joint (61) is provided at the inlet end of the venous calcium fluid connection tube (58).

10. The continuous blood purification line according to claim 1, wherein a ninth rotary joint (62) is provided at the outlet end of the substitution liquid tube (3), and the ninth rotary joint (62) is connected to a first dialyzer joint (64) through a tenth wing rotary joint (63); the inlet end of the filtrate pipe (4) is provided with a tenth rotary joint (65), and the tenth rotary joint (65) is connected with a second dialyzer joint (67) through an eleventh wing-type rotary joint (66).