Extracorporeal circulation pipeline of blood purification device

Abstract

The utility model relates to the technical field of external circulation pipelines, and discloses an extracorporeal circulation pipeline of a blood purification device, which comprises a circulation pipe bundle, one side of the outer wall of the circulation pipe bundle is fixedly connected with a joint, the outer wall of the joint is fixedly connected with a positioning ring, and the outer wall of the joint is slidably connected with an external pipe bundle. A sealing assembly is arranged on the outer wall of the connector and used for sealing the connecting position of the connector and the external pipe bundle, a connecting ring is fixedly connected to the outer wall of the external pipe bundle, a connecting sleeve is rotationally connected to the interior of the circulating pipe bundle, and a reset assembly is arranged in the connecting sleeve. According to the blood purification device, the problems that an extracorporeal circulation pipeline of the blood purification device is multiple in disassembly and assembly steps, complex in operation, difficult to respond in time and easy to delay treatment are solved, and the effects that the extracorporeal circulation pipeline can be quickly disassembled and assembled, the time of connecting and replacing the pipeline by medical staff can be remarkably shortened, and the treatment efficiency is improved through quick response are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of external circulation pipeline, especially relates to a blood purification device's extracorporeal circulation pipeline. BACKGROUND

[0002] Blood purification device is used for removing harmful substances, excess water and the like in blood to maintain water, electrolyte and acid-base balance of the body and improve internal environment, and the extracorporeal circulation pipeline thereof is needed because the extracorporeal circulation pipeline can build a passage for blood to be drawn from the body, treated by the blood purification device and then transfused back to the body, thereby ensuring the safe, orderly and smooth blood purification process and achieving the purpose of effectively improving the patient's physical condition by means of the blood purification device.

[0003] When the extracorporeal circulation pipeline of the conventional blood purification device is used, one end thereof is first connected to the vascular access (such as arteriovenous fistula or central venous catheter) of the patient, the blood is drawn from the patient's body by the power of the blood pump, flows into the blood purification device (such as dialyzer, filter, etc.) along the pipeline, completes the purification treatment process such as material exchange or filtration in the purification device, and then the purified blood is transfused back to the patient's body through the pipeline, in the whole process, the sensors in the pipeline monitor various indexes such as pressure and flow rate in real time to ensure the safe and stable operation of the extracorporeal circulation, at the same time, the state of clamping and opening of each branch pipeline and the rotation speed of the pump are adjusted to accurately control the direction and flow rate of the blood, thereby ensuring the smooth development of blood purification treatment.

[0004] The extracorporeal circulation pipeline of the conventional blood purification device usually adopts multiple connection modes such as threaded joint and luer joint, and needs to be tightly screwed or inserted during connection to ensure that the blood does not leak, which is complicated in disassembly and assembly, difficult to respond in time and easy to delay treatment. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides an extracorporeal circulation pipeline of a blood purification device, which aims at improving the problems of the conventional extracorporeal circulation pipeline of the blood purification device, such as complicated disassembly and assembly, difficult to respond in time and easy to delay treatment.

[0006] To achieve the above object, the utility model provides the following technical scheme: An extracorporeal circulation pipeline of blood purification device, including circulation pipe bundle, the outer wall side of circulation pipe bundle is fixedly connected with joint, the outer wall of joint is fixedly connected with positioning ring, the outer wall of joint is connected with external connection pipe bundle, the outer wall of joint is provided with sealing assembly, sealing assembly is used for sealing the joint with the connecting place of external connection pipe bundle, the outer wall of external connection pipe bundle is fixedly connected with link ring, the inside rotation is connected with link sleeve of circulation pipe bundle, the inside of link sleeve is provided with reset component, reset component is used for driving link sleeve rotation to initial position, the outer wall of link sleeve is fixedly connected with clamping block,

[0007] The sealing assembly comprises an elastic sealing ring, the inner wall of the elastic sealing ring is fixedly connected to the outer wall of the joint, and the inside of the external connection pipe bundle is provided with an annular groove.

[0008] Further, the reset component comprises a fixed shaft, the outer wall of the fixed shaft is rotatably connected to the inside of the link sleeve, and the outer wall of the fixed shaft is sleeved with a torsion spring.

[0009] Further, the outer wall of the circulation pipe bundle is annularly curved near the joint side to form a blood pump holding pipe, the middle of the joint is fixedly connected with an anticoagulant delivery pipe, the end of the joint is provided with a sealing cap, the outer wall of the joint is fixedly connected with two delivery pipe bundles near the sealing cap, both ends of the two delivery pipe bundles are provided with pipe clamps, the middle of the delivery pipe bundle is provided with a dialyzer, the inside of the dialyzer is provided with a delivery assembly, and the delivery assembly is used for delivering dialysate.

[0010] Further, the delivery assembly comprises a dialysate delivery pipe, one end of the dialysate delivery pipe is fixedly connected to the inside of the dialyzer, and the inside of the dialyzer is fixedly connected with a waste dialysate pipe away from the dialysate delivery pipe.

[0011] Further, both ends of the fixed shaft are fixedly connected to the inside of the circulation pipe bundle, and the fixed shaft is used for limiting the torsion spring.

[0012] Further, one end of the torsion spring is fixedly connected to the inside of the link sleeve, and the other end of the torsion spring is fixedly connected to the inside of the circulation pipe bundle.

[0013] Further, the pipe clamp is arranged on both sides of the dialyzer, and the pipe clamp is used for closing the delivery pipe bundle.

[0014] Further, the outer wall of the elastic sealing ring is arranged in the inside of the annular groove, and the elastic sealing ring is used for sealing between the external connection pipe bundle and the circulation pipe bundle.

[0015] The utility model has the following beneficial effects:

[0016] 1. In the utility model, first pull the clamping block to make it rotate with the adapter sleeve as the center, so that the external pipe bundle can be inserted into the outer wall of the circulating pipe bundle, then cooperate the elastic sealing ring and the annular groove to seal the external pipe bundle, then cooperate the adapter ring, the fixed shaft and the torsion spring to fix the external pipe bundle, solve the problems of multiple disassembly and assembly steps, complex operation, difficult to respond in time and easy to delay treatment of the extracorporeal circulation pipeline of blood purification device, achieve quick disassembly and assembly, significantly shorten the time of medical staff in connection and pipeline replacement, and improve the treatment efficiency.

[0017] 2. In the utility model, first place the blood pump holding tube in the blood pump, then control the blood flow rate through the blood pump, then deliver the anticoagulant through the anticoagulant delivery pipe, then cooperate the delivery pipe bundle, the pipe clamp, the dialysis solution delivery pipe, the waste dialysis solution pipe and the two groups of dialyzers to realize the circulating alternating delivery, achieve the continuous blood purification, avoid the toxin residue or the treatment effect decline caused by interruption. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A three-dimensional structure schematic view of the extracorporeal circulation pipeline of the blood purification device is provided for the utility model;

[0019] Figure 2 An internal structure schematic view of the external pipe bundle of the extracorporeal circulation pipeline of the blood purification device is provided for the utility model;

[0020] Figure 3 For Figure 2 The enlarged view of A in the middle.

[0021] LEGEND:

[0022] 1, joint; 2, positioning ring; 3, elastic sealing ring; 4, annular groove; 5, adapter ring; 6, fixed shaft; 7, clamping block; 8, torsion spring; 9, adapter sleeve; 10, external pipe bundle; 11, circulating pipe bundle; 12, anticoagulant delivery pipe; 13, blood pump holding tube; 14, sealing cap; 15, delivery pipe bundle; 16, pipe clamp; 17, dialyzer; 18, dialysis solution delivery pipe; 19, waste dialysis solution pipe. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] Referring to Figures 1-3 The utility model provides an embodiment: a kind of extracorporeal circulation pipeline of blood purification device, including circulation pipe bundle 11, the outer wall of circulation pipe bundle 11 side fixedly connected with connector 1, the outer wall of connector 1 is fixedly connected with positioning ring 2, the outer wall of connector 1 is slidably connected with external connection pipe bundle 10, the outer wall of connector 1 is provided with sealing assembly, sealing assembly is used to seal the junction of connector 1 and external connection pipe bundle 10, the outer wall of external connection pipe bundle 10 is fixedly connected with link ring 5, the inside rotationally connected with link sleeve 9 of circulation pipe bundle 11, link sleeve 9 is provided with reset component in the inside, reset component is used to drive link sleeve 9 to rotate to initial position, the outer wall of link sleeve 9 is fixedly connected with clamping block 7;

[0025] Sealing assembly includes elastic sealing ring 3, the inner wall of elastic sealing ring 3 is fixedly connected in the outer wall of connector 1, the inside of external connection pipe bundle 10 is provided with annular groove 4, reset component includes fixed shaft 6, the outer wall of fixed shaft 6 is rotationally connected in the inside of link sleeve 9, torsion spring 8 is sheathed on the outer wall of fixed shaft 6.

[0026] Referring to Figure 1 The outer wall of circulation pipe bundle 11 is annularly curved and formed as blood pump holding tube 13 near the side of connector 1, the middle part of connector 1 is fixedly connected with anticoagulant delivery tube 12, the end of connector 1 is provided with sealing cap 14, the outer wall of connector 1 is fixedly connected with two delivery tube bundles 15 near the side of sealing cap 14, both ends of the two delivery tube bundles 15 are provided with tube clamp 16, the middle part of delivery tube bundle 15 is provided with dialyzer 17, the inside of dialyzer 17 is provided with delivery assembly, and the delivery assembly is used to deliver dialysate, the delivery assembly includes dialysate delivery tube 18, one end of dialysate delivery tube 18 is fixedly connected in the inside of dialyzer 17, waste dialysate tube 19 is fixedly connected in the inside of dialyzer 17 away from dialysate delivery tube 18, both ends of fixed shaft 6 are fixedly connected in the inside of circulation pipe bundle 11, fixed shaft 6 is used to limit torsion spring 8, one end of torsion spring 8 is fixedly connected in the inside of link sleeve 9, the other end of torsion spring 8 is fixedly connected in the inside of circulation pipe bundle 11, tube clamp 16 is arranged on both sides of dialyzer 17, tube clamp 16 is used to close delivery tube bundle 15, the outer wall of elastic sealing ring 3 is arranged in the inside of annular groove 4, and elastic sealing ring 3 is used to seal between external connection pipe bundle 10 and circulation pipe bundle 11.

[0027] Working principle: when the blood purification device needs to be used to the extracorporeal circulation pipeline, first, the smaller end of the external pipe bundle 10 is inserted into the gap between the positioning ring 2 and the joint 1, and the inclined surface on one side of the clamping block 7 is pressed by the movement of the external pipe bundle 10, so that the clamping block 7 drives the adapter sleeve 9 to rotate on the outer wall of the fixed shaft 6, and the torsion spring 8 is twisted, when the clamping block 7 rotates to a certain angle, the external pipe bundle 10 can be completely inserted into the inner wall of the positioning ring 2, at this time, the adapter ring 5 is moved to the straight corner of the clamping block 7 on the inside through the movement of the external pipe bundle 10, and the clamping block 7 is not stressed, the torsion spring 8 is rebounded to drive one side of the clamping block 7 to move to the outer wall of the adapter ring 5, thereby limiting the external pipe bundle 10 to prevent the external pipe bundle 10 from falling off due to external force, in this process, the elastic sealing ring 3 is pressed by the movement of the external pipe bundle 10, so that the elastic sealing ring 3 is deformed and completely adheres to the inner wall of the external pipe bundle 10, when the external pipe bundle 10 is moved and fixed, the elastic sealing ring 3 is moved to the inside of the annular groove 4, and the joint 1 and the connection between the elastic sealing ring 3 are sealed, thereby realizing the disassembly and assembly of the circulation pipe bundle 11.

[0028] In addition, the blood pump retention pipe 13 can be prevented in the blood pump, so that the blood can be circulated in the circulation pipe bundle 11, then the anticoagulant can be delivered to the inside of the joint 1 through the anticoagulant delivery pipe 12, then the blood is delivered to the inside of the delivery pipe bundle 15 through the joint 1, so as to be delivered to the inside of the dialyzer 17, at this time, the dialysate is delivered to the inside of the dialyzer 17 through the dialysate delivery pipe 18, so as to be purified, if the inside of the dialyzer 17 is blocked, the pipe clamp 16 on the two sides can be closed, then the other side of the delivery pipe bundle 15 is opened to deliver the blood to the inside of the dialyzer 17, so as to continue to purify, avoiding interruption of purification.

[0029] Finally, it should be pointed out that: the above is only the preferred embodiment of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An extracorporeal circuit for a blood purification apparatus comprising a bundle of circulation tubes (11), characterized in that: The outer wall side of the circulating pipe bundle (11) is fixedly connected with a connector (1), the outer wall of the connector (1) is fixedly connected with a positioning ring (2), the outer wall of the connector (1) is slidably connected with an external pipe bundle (10), the outer wall of the connector (1) is provided with a sealing assembly, the sealing assembly is used for sealing the connection between the connector (1) and the external pipe bundle (10), the outer wall of the external pipe bundle (10) is fixedly connected with a connecting ring (5), the inside of the circulating pipe bundle (11) is rotatably connected with a connecting sleeve (9), the inside of the connecting sleeve (9) is provided with a reset assembly, the reset assembly is used for driving the connecting sleeve (9) to rotate to the initial position, and the outer wall of the connecting sleeve (9) is fixedly connected with a clamping block (7). The sealing assembly comprises an elastic sealing ring (3), and the inner wall of the elastic sealing ring (3) is fixedly connected to the outer wall of the connector (1). An annular groove (4) is formed in the inside of the external pipe bundle (10).

2. The extracorporeal circuit for a blood treatment apparatus according to claim 1, wherein: The reset assembly comprises a fixed shaft (6), the outer wall of the fixed shaft (6) is rotatably connected to the inside of the connecting sleeve (9), and the outer wall of the fixed shaft (6) is sleeved with a torsion spring (8).

3. The extracorporeal circuit for a blood treatment apparatus according to claim 1, wherein: The outer wall of the circulating pipe bundle (11) is annularly curved near the side of the connector (1) to form a blood pump retention pipe (13), the middle of the connector (1) is fixedly connected with an anticoagulant delivery pipe (12), the end of the connector (1) is provided with a sealing cap (14), the outer wall of the connector (1) is fixedly connected with two delivery pipe bundles (15) near the side of the sealing cap (14), both ends of the two delivery pipe bundles (15) are provided with pipe clamps (16), the middle of the delivery pipe bundle (15) is provided with a dialyzer (17), and the inside of the dialyzer (17) is provided with a delivery assembly.

4. The extracorporeal circuit for a blood treatment apparatus according to claim 3, wherein: The delivery assembly comprises a dialysate delivery pipe (18), one end of the dialysate delivery pipe (18) is fixedly connected to the inside of the dialyzer (17), and the inside of the dialyzer (17) is fixedly connected with a waste dialysate pipe (19) away from the dialysate delivery pipe (18).

5. The extracorporeal circuit for a blood treatment apparatus according to claim 2, wherein: Both ends of the fixed shaft (6) are fixedly connected to the inside of the circulating pipe bundle (11), and the fixed shaft (6) is used for limiting the torsion spring (8).

6. The extracorporeal circuit for a blood treatment apparatus according to claim 2, wherein: One end of the torsion spring (8) is fixedly connected to the inside of the connecting sleeve (9), and the other end of the torsion spring (8) is fixedly connected to the inside of the circulating pipe bundle (11).

7. The extracorporeal circuit for a blood treatment apparatus according to claim 4, wherein: The pipe clamps (16) are arranged on both sides of the dialyzer (17), and the pipe clamps (16) are used for closing the delivery pipe bundle (15).

8. The extracorporeal circuit for a blood treatment apparatus according to claim 2, wherein: The outer wall of the elastic sealing ring (3) is arranged in the inside of the annular groove (4), and the elastic sealing ring (3) is used for sealing between the external pipe bundle (10) and the circulating pipe bundle (11).

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