Dialysis blood flow connector and dialysis device

Abstract

The application discloses a dialysis blood flow connector and a dialysis device, and relates to the technical field of dialysis blood flow connectors, which comprises a main pipeline, one end of the main pipeline is connected with a first connector, the other end of the main pipeline is connected with a second connector, a branch pipeline is arranged on the main pipeline, and the branch pipeline is connected with a first puncture needle. The dialysis blood flow connector can introduce blood in an internal fistula graft blood vessel and normal body surface venous blood as two ends of the dialysis blood flow connector, promote blood flow to reach a standard, and keep the dialysis machine working normally. The dialysis blood flow connector can be operated by one person, has no risk, and can make hemodialysis patients with internal fistula graft blood vessels or long-term and temporary catheter dysfunction not need to be operated, quickly solve the insufficient blood flow condition, not delay hemodialysis treatment, and has very small cost. The dialysis blood flow connector can be used as short-term transition treatment and long-term replacement treatment for the insufficient blood flow condition, has simple structure, is convenient to use, has good effect, and is worth promoting.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and in particular to a dialysis blood flow connector and a dialysis device. Background Technology

[0002] Hemodialysis often faces situations where patients have arteriovenous fistulas or poor function of long-term or temporary catheters, resulting in insufficient blood flow (generally, the requirement for hemodialysis is a blood flow of 180 ml / min; below this value, the dialysis effect is poor or there is a chance of dialysis being discontinued), leading to poor hemodialysis results or difficulty in continuing dialysis.

[0003] In cases of pre-existing arteriovenous fistulas or malfunctioning catheters, patients who discontinue dialysis treatment require temporary catheter placement as a replacement therapy; or long-term catheter placement (requiring elective surgery and taking a long time); or fistula reconstruction (requiring elective surgery, taking a long time, and only being able to use the dialysis catheter 4-6 weeks after successful surgery, with dialysis catheter placement used as a transitional measure during the period). All of these surgeries are expensive, require 1-2 qualified professional physicians to perform, and carry high surgical risks. Lower-level hospitals often do not have the capability to handle these issues, requiring patients to be transferred to other hospitals for treatment, which is time-consuming and laborious. Summary of the Invention

[0004] The purpose of this invention is to address the problems of existing surgical treatments for hemodialysis patients with arteriovenous fistulas or long-term or temporary catheter malfunctions, which are expensive, require 1-2 qualified surgeons, carry high surgical risks, and are often not feasible in lower-level hospitals, necessitating patient transfers and other time-consuming and labor-intensive procedures. This invention provides a dialysis blood flow connector and dialysis device.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A dialysis blood flow connector includes a main tube, one end of which is connected to a first connector and the other end to a second connector. A branch tube is provided on the main tube, and the branch tube is connected to a first puncture needle, or the branch tube is connected to a third connector. The third connector is used to detachably connect to a fourth connector, and the fourth connector is connected to the first puncture needle.

[0007] In existing dialysis devices, the second puncture needle is inserted into the arteriovenous fistula graft. The second puncture needle and the dialysis machine are connected through the connection of the sixth and fifth connectors. When the arteriovenous fistula or dialysis catheter (including long-term and temporary catheters) malfunctions, causing the dialysis machine to display insufficient dialysis blood flow, a dialysis blood flow connector as described in this invention is used. The second puncture needle is connected to the main conduit through the connection of the sixth connector and the first connector. The main conduit is connected to the dialysis machine through the connection of the second connector and the fifth connector. The first puncture needle is used to insert into the patient's superficial vein, using the vein as an artery to supply blood, thereby promoting blood flow to the target level, and the dialysis machine can perform dialysis normally.

[0008] The dialysis blood flow connector described in this invention allows blood from a fistula graft and normal venous blood from the body surface to be simultaneously introduced into the dialysis machine from both ends, ensuring adequate blood flow and maintaining normal operation of the dialysis machine. This connector can be operated by a single person without risk, enabling hemodialysis patients with fistulas or long-term / temporary catheter malfunctions to quickly resolve insufficient blood flow without surgery, thus not delaying hemodialysis treatment. It is extremely cost-effective and can serve as a short-term transitional treatment and long-term alternative for insufficient blood flow, and can be adopted in ordinary hospitals. This dialysis blood flow connector has a simple structure, is easy to use, and has good results, making it worthy of widespread adoption.

[0009] Preferably, the diameter of the main pipe is larger than the diameter of the branch pipe.

[0010] Preferably, the diameter of the main pipe between the branch pipe port and the first joint is smaller than the diameter of the main pipe between the branch pipe port and the second joint.

[0011] Preferably, the sum of the cross-sectional area of ​​the main pipe between the branch pipe port and the first joint and the cross-sectional area of ​​the branch pipe is greater than the cross-sectional area of ​​the main pipe between the branch pipe port and the second joint.

[0012] With this structural design, the sum of the blood flow entering the main pipe through the first connector and the blood flow entering the main pipe through the branch pipe can be greater than the blood flow exiting through the second connector, ensuring a continuous supply of blood flow exiting through the second connector and guaranteeing the blood flow required for the normal operation of the dialysis machine.

[0013] Preferably, the branch pipe and the main pipe form a Y-shaped component.

[0014] More preferably, the angle between the branch pipe and the main pipe is 45°-60°.

[0015] Preferably, the length of the main pipe between the branch pipe port and the first joint is less than the length of the branch pipe.

[0016] The present invention also provides a dialysis device, comprising a second puncture needle, a dialysis machine, and a dialysis blood flow connector as described in any one of claims 1-7, wherein the dialysis machine is connected to a fifth connector, the fifth connector being detachably connected to the second connector, and the second puncture needle is connected to a sixth connector, the sixth connector being detachably connected to the first connector.

[0017] In existing dialysis devices, the second puncture needle is inserted into the arteriovenous fistula graft. The second puncture needle and the dialysis machine are connected through the connection of the sixth and fifth connectors. When the arteriovenous fistula or dialysis catheter (including long-term and temporary catheters) malfunctions, causing the dialysis machine to display insufficient dialysis blood flow, a dialysis blood flow connector as described in this invention is used. The second puncture needle is connected to the main conduit through the connection of the sixth connector and the first connector. The main conduit is connected to the dialysis machine through the connection of the second connector and the fifth connector. The first puncture needle is used to insert into the patient's superficial vein, using the vein as an artery to supply blood, thereby promoting blood flow to the target level, and the dialysis machine can perform dialysis normally.

[0018] The dialysis device described in this invention allows blood from a fistula graft and normal venous blood from the body surface to be simultaneously introduced into the dialysis machine from both ends, ensuring adequate blood flow and maintaining normal machine operation. This device can be operated by a single person without risk, enabling hemodialysis patients with fistulas or poor long-term / temporary catheter function to quickly resolve insufficient blood flow without surgery, thus not delaying hemodialysis treatment. It is extremely cost-effective and can serve as a short-term transitional treatment or long-term alternative for insufficient blood flow, and can be adopted in ordinary hospitals. The device has a simple structure, is easy to use, and has good results, making it worthy of widespread adoption.

[0019] Preferably, the first connector is a first male Luer connector, the second connector is a first female Luer connector, the fifth connector is a second male Luer connector, and the sixth connector is a second female Luer connector.

[0020] The Luer connector is used for connection, which is a mature, reliable, and effective solution.

[0021] Preferably, the branch tube is positioned toward the second puncture needle, and the first puncture needle is close to the second puncture needle.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0023] 1. The dialysis blood flow connector of this invention can simultaneously introduce blood from the arteriovenous fistula graft and normal venous blood from the body surface into the dialysis machine as two common guides, promoting blood flow to the target level and maintaining the normal operation of the dialysis machine. This dialysis blood flow connector can be operated by a single person without risk, enabling hemodialysis patients with arteriovenous fistulas or poor long-term or temporary catheter function to quickly resolve insufficient blood flow without surgery, without delaying hemodialysis treatment. The cost is extremely low, and it can be used as a short-term transitional treatment and long-term alternative treatment for insufficient blood flow. It can be adopted by ordinary hospitals. This dialysis blood flow connector has a simple structure, is easy to use, and has good effects, making it worthy of promotion.

[0024] 2. In the dialysis blood flow connector of the present invention, the sum of the cross-sectional area of ​​the main pipe and the cross-sectional area of ​​the branch pipe between the branch pipe port and the first connector is greater than the cross-sectional area of ​​the main pipe between the branch pipe port and the second connector. The sum of the blood flow rate entering the main pipe through the first connector and the blood flow rate entering the main pipe through the branch pipe is greater than the blood flow rate exiting through the second connector, which can ensure a continuous supply of blood flow exiting through the second connector, thereby guaranteeing the blood flow required for the normal operation of the dialysis machine.

[0025] 3. The dialysis device described in this invention can simultaneously draw blood from both ends of a fistula graft and normal venous blood from the body surface into the dialysis machine, thereby ensuring adequate blood flow and maintaining normal operation of the dialysis machine. This dialysis device can be operated by a single person without risk, allowing hemodialysis patients with fistulas or poor long-term or temporary catheter function to quickly resolve insufficient blood flow without surgery, without delaying hemodialysis treatment. It is extremely cost-effective and can serve as a short-term transitional treatment and long-term alternative treatment for insufficient blood flow. It can be adopted in ordinary hospitals. This dialysis device has a simple structure, is easy to use, and has good effects, making it worthy of promotion. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the dialysis blood flow connector and the dialysis device.

[0027] Figure 2 This is another structural schematic diagram of the dialysis blood flow connector and the dialysis device.

[0028] Icons: 1-Main pipe, 11-Branch pipe, 21-First connector, 22-Sixth connector, 31-Second connector, 32-Fifth connector, 4-Second puncture needle, 5-First puncture needle, 6-Dialysis machine, 71-Third connector, 72-Fourth connector. Detailed Implementation

[0029] The present invention will now be described in detail with reference to the accompanying drawings.

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0031] Example 1

[0032] like Figure 1 As shown, the dialysis device of the present invention includes a second puncture needle 4, a dialysis machine 6, and a dialysis blood flow connector.

[0033] The dialysis blood flow connector includes a main pipe 1, one end of which is connected to a first connector 21 and the other end is connected to a second connector 31. A branch pipe 11 is provided on the main pipe 1, and a first puncture needle 5 is connected to the branch pipe 11.

[0034] The dialysis machine 6 is connected to a fifth connector 32, which is detachably connected to the second connector 31. The second puncture needle 4 is connected to a sixth connector 22, which is detachably connected to the first connector 21.

[0035] Specifically, the first connector 21 is a first male Luer connector, the second connector 31 is a first female Luer connector, the fifth connector 32 is a second male Luer connector, and the sixth connector 22 is a second female Luer connector. The use of Luer connectors for connection is a mature, reliable, and effective solution.

[0036] The diameter of the main pipe 1 is larger than the diameter of the branch pipe 11. The diameter of the main pipe 1 between the port of the branch pipe 11 and the first connector 21 is smaller than the diameter of the main pipe 1 between the port of the branch pipe 11 and the second connector 31. The length of the main pipe 1 between the port of the branch pipe 11 and the first connector 21 is smaller than the length of the branch pipe 11. The branch pipe 11 is positioned towards the second puncture needle 4, and the first puncture needle 5 is close to the second puncture needle 4. The branch pipe 11 and the main pipe 1 form a Y-shaped component, and the included angle between the branch pipe 11 and the main pipe 1 is 45°-60°.

[0037] The sum of the cross-sectional area of ​​the main pipe 1 between the port of the branch pipe 11 and the first connector 21 and the cross-sectional area of ​​the branch pipe 11 is greater than the cross-sectional area of ​​the main pipe 1 between the port of the branch pipe 11 and the second connector 31. With this structural arrangement, the sum of the blood flow entering the main pipe 1 through the first connector 21 and the blood flow entering the main pipe 1 through the branch pipe 11 can be greater than the blood flow exiting through the second connector 31. This ensures a continuous supply of blood flow exiting through the second connector 31, thereby guaranteeing the blood flow required for the normal operation of the dialysis machine 6.

[0038] In existing dialysis devices, the second puncture needle 4 is inserted into the arteriovenous fistula graft. The second puncture needle 4 and the dialysis machine 6 are connected through the connection of the sixth connector 22 and the fifth connector 32. When the arteriovenous fistula or dialysis catheter (including long-term catheters and temporary catheters) malfunctions, causing the dialysis machine 6 to display insufficient dialysis blood flow, a dialysis blood flow connector as described in this invention is used. The second puncture needle 4 is connected to the main conduit 1 through the connection of the sixth connector 22 and the first connector 21. The main conduit 1 is connected to the dialysis machine 6 through the connection of the second connector 31 and the fifth connector 32. The first puncture needle 5 is used to insert into the patient's superficial vein, using the vein as an artery to supply blood, thereby promoting blood flow to the target level, and the dialysis machine 6 can perform dialysis normally.

[0039] Using the dialysis device described in this invention, blood from the arteriovenous fistula graft and normal venous blood from the body surface can be simultaneously introduced into the dialysis machine 6 as two co-channel guides, promoting blood flow to the target level and maintaining the normal operation of the dialysis machine 6. This dialysis device can be operated by a single person without risk, enabling hemodialysis patients with arteriovenous fistulas or long-term or temporary catheter dysfunction to quickly resolve insufficient blood flow without surgery, without delaying hemodialysis treatment. The cost is extremely low, and it can be used as a short-term transitional treatment and long-term alternative treatment for insufficient blood flow. It can be adopted by ordinary hospitals. This dialysis device has a simple structure, is easy to use, and has good effects, making it worthy of promotion.

[0040] Example 2

[0041] like Figure 2 As shown, the dialysis device of the present invention differs from that of Embodiment 1 in that, in this embodiment, the branch pipe 11 is connected to a third connector 71, the third connector 71 is used to detachably connect to a fourth connector 72, and the fourth connector 72 is connected to a first puncture needle 5.

[0042] Specifically, the third connector 71 is a third male Luer connector, and the fourth connector 72 is a third female Luer connector. The use of Luer connectors for connection is a mature, reliable, and effective solution.

[0043] With this structural design, the dialysis blood flow connector only includes the main pipe 1, the branch pipe 11, the first connector 21, the second connector 31, and the third connector 71, which facilitates production and saves costs. In actual use, when the blood flow is insufficient, it is only necessary to replace the dialysis blood flow connector of this embodiment and connect the matching fourth connector 72 through the third connector 71 to connect the first puncture needle 5. The dialysis blood flow connector itself does not come with needles, which increases the safety during packaging, transportation, and disassembly.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dialysis blood flow connector comprising a main conduit (1), characterized in that, The main pipeline (1) is connected with a first joint (21) at one end and a second joint (31) at the other end, and a branch pipeline (11) is arranged on the main pipeline (1), the branch pipeline (11) is connected with a first puncture needle (5), or the branch pipeline (11) is connected with a third joint (71) for detachably connecting a fourth joint (72) connected with the first puncture needle (5); and the main pipeline (1) is a pipeline for blood to enter a dialysis machine (6). The main pipeline (1) has a larger diameter than the branch pipeline (11), and the diameter of the main pipeline (1) between the branch pipeline (11) and the first joint (21) is smaller than the diameter of the main pipeline (1) between the branch pipeline (11) and the second joint (31); and the sum of the cross-sectional area of the main pipeline (1) between the branch pipeline (11) and the first joint (21) and the cross-sectional area of the branch pipeline (11) is greater than the cross-sectional area of the main pipeline (1) between the branch pipeline (11) and the second joint (31).

2. The dialysis blood flow connector of claim 1, wherein, The branch pipeline (11) and the main pipeline (1) form a Y-shaped component.

3. The dialysis blood flow connector of claim 2, wherein, The included angle between the branch pipeline (11) and the main pipeline (1) is 45°-60°.

4. The dialysis blood flow connector according to any one of claims 1-3, characterized in that The length of the main pipeline (1) between the branch pipeline (11) and the first joint (21) is less than the length of the branch pipeline (11).

5. A dialysis device, characterized in that, The dialysis blood flow connector comprises a second puncture needle (4), a dialysis machine (6) and the dialysis blood flow connector according to any one of claims 1-4, the dialysis machine (6) is connected with a fifth joint (32) detachably connected with the second joint (31), and the second puncture needle (4) is connected with a sixth joint (22) detachably connected with the first joint (21).

6. The dialysis device of claim 5, wherein, The first joint (21) is a first male luer joint, the second joint (31) is a first female luer joint, the fifth joint (32) is a second male luer joint, and the sixth joint (22) is a second female luer joint.

7. The dialysis device according to any one of claims 5-6, characterized in that, The branch pipeline (11) is arranged towards the second puncture needle (4), and the first puncture needle (5) is close to the second puncture needle (4).

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