Central venous catheter communicating device for hemodialysis

Abstract

The utility model relates to the technical field of hemodialysis catheters, in particular to a central venous catheter communicating device for hemodialysis, and solves the technical problems that an existing central venous catheter is low in flow or is interrupted, and infection risks and accident states are easy to generate. The quantitative ring is used for supplementing flow, the quantitative ring is generally an annular component, liquid is stored in the quantitative ring, the circulation flow of the quantitative ring generally changes along with the sampling flow, and the quantitative ring is applied to the quantitative ring in the scheme, so that blood is better supplemented in the dialysis process; according to the technical scheme, the two ports of the deep vein indwelling catheter and the two ports of the dialysis pipeline can be rapidly replaced and connected under the condition that the two ports are not disconnected, and the emergency fault state can be handled.

Description

Technical Field

[0001] The utility model relates to the technical field of hemodialysis catheters, and particularly relates to a central venous catheter connection device for hemodialysis. Background Art

[0002] Blood purification requires the patient's blood to be drawn out of the body, pass through a dialyzer or other purification device at a continuous and stable blood flow rate, and then return to the body. This circulation path is called a vascular access. Establishing a stable and reliable vascular access is the basic guarantee for the smooth progress of blood purification.

[0003] In the current method, the main application is a single-needle double-lumen catheter with a Cuff; commonly used are jugular vein catheters of 15-19 cm and femoral vein catheters of more than 19 cm; the side hole at the proximal end of the catheter is the arterial end, that is, the outlet of the blood; the opening at the top of the catheter is the venous end, that is, the inlet of the blood.

[0004] The standard dialysis blood flow rate of the vascular access is 200-300 ml / min. Therefore, in the prior art, there is often a situation of insufficient blood flow through the catheter, and there is an increased risk of infection during the treatment of catheter failure, resulting in an accident state. If the connection point can be changed without disconnecting the pipeline, the safety can be greatly improved.

[0005] In the prior art, for example, in the Chinese utility model patent with the publication number CN212575351U and the patent name "A Special Extracorporeal Circulation Pipeline System for Central Venous Catheter Hemodialysis", the configured pipeline system is too long and needs to be simplified. Content of the Utility Model

[0006] The utility model aims to solve the above technical problems in the prior art and provides a central venous catheter connection device for hemodialysis.

[0007] To solve the above technical problems, the technical solution of the utility model is specifically as follows:

[0008] A central venous catheter connection device for hemodialysis is used to connect a deep venous catheter 1 and a dialysis pipeline.

[0009] The deep venous catheter 1 has a deep venous catheter arterial end A and a deep venous catheter venous end V.

[0010] The dialysis pipeline has a dialysis pipeline arterial end a and a dialysis pipeline venous end v.

[0011] It further includes:

[0012] An arterial connection tube 10, which is used to connect the deep venous catheter arterial end A and the dialysis pipeline arterial end a.

[0013] A venous connection tube 20 for connecting the venous end V of the deep venous catheterization and the venous end v of the dialysis line;

[0014] A first metering loop assembly 100 capable of connecting the arterial end A of the deep venous catheterization and the venous connection tube 20 so that the arterial end A of the deep venous catheterization is connected to the venous end v of the dialysis line;

[0015] A second metering loop assembly 200 capable of connecting the venous end V of the deep venous catheterization and the arterial connection tube 10 so that the venous end V of the deep venous catheterization is connected to the arterial end a of the dialysis line.

[0016] Specifically, the first metering loop assembly 100 includes:

[0017] A first metering loop 101 having a No. 1 annular area connection tube 101a;

[0018] The No. 1 annular area connection tube 101a is connected to the body of the first metering loop 101;

[0019] The first metering loop 101 has a first interface end 101b and a second interface end 101c.

[0020] Specifically, a No. A1 three-way node A1 is provided on the arterial connection tube 10, and the No. 1 annular area connection tube 101a is communicated with the No. A1 three-way node A1;

[0021] A No. K2 clip valve k2 is provided on the No. 1 annular area connection tube 101a.

[0022] Specifically, the first interface end 101b and the No. V1 three-way node V1 are connected by a first connecting tube 110b;

[0023] A No. K4 clip valve k4 is provided on the first connecting tube 110b;

[0024] The second interface end 101c and the No. V2 three-way node V2 are connected by a second connecting tube 110c;

[0025] A No. K1 clip valve k1 is provided on the second connecting tube 110c;

[0026] The No. V2 three-way node and the No. V1 three-way node are provided on the venous connection tube 20, and the No. V1 three-way node is provided close to the venous end V of the deep venous catheterization;

[0027] The No. V2 three-way node is located downstream of the No. V1 three-way node, and a No. K3 clip valve k3 is provided between them.

[0028] Specifically, the second metering loop assembly 200 includes:

[0029] The second metering loop 201, which has a second annular region connecting pipe 201a;

[0030] The second annular region connecting pipe 201a is connected to the three-way node V3 of V3;

[0031] The three-way node V3 of V3 is located between the three-way node V1 of V1 and the pinch valve k3 of K3;

[0032] The second metering loop 201 has a second interface end 201b and a third interface end 201c.

[0033] Specifically, the second interface end 201b is communicated to the three-way node A2 of A2 through the second connecting pipe 202b;

[0034] The f1 pinch valve f1 is provided on the second connecting pipe 202b;

[0035] The third interface end 201c is connected to the three-way node A3 of A3 through the No. 3 connecting pipe 202c;

[0036] The f4 pinch valve f4 is provided on the No. 3 connecting pipe 202c.

[0037] Specifically, the f3 pinch valve f3 is provided between the three-way node A3 of A3 and the three-way node A2 of A2.

[0038] Specifically, the three-way node A3 of A3 is arranged close to the arterial end a of the dialysis pipeline;

[0039] The three-way node A2 of A2 is located between the three-way node A1 of A1 and the three-way node A3 of A3.

[0040] The present utility model has the following beneficial effects:

[0041] In this technical solution, a metering loop component is used, which is practical as a component for supplementing the flow rate. The metering loop is usually an annular component with liquid stored inside, and its flow rate generally changes with the flow rate of the dialysis blood. Applying the metering loop in this solution enables better blood supplementation during the connection process. Moreover, this technical solution can realize the rapid connection between the arterial end of the deep vein catheterization and the venous end of the dialysis pipeline and the rapid connection between the arterial end of the dialysis pipeline and the venous end of the deep vein catheterization, and can handle emergency failure states without disconnecting the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The present utility model will be further described in detail below in conjunction with the drawings and specific embodiments.

[0043] Figure 1 It is a configuration schematic diagram of the present utility model;

[0044] Figure 2 Schematic diagram of the configuration of the quantitative loop component of the present utility model;

[0045] Figure 3 Embodiment of the present utility model under normal conditions;

[0046] Figure 4 Embodiment of the present utility model under the drainage state;

[0047] Figure 5 Embodiment of the present utility model under the supplementary flow state;

[0048] Figure 6 Embodiment of the present utility model under the connection change state.

[0049] The reference numerals in the figure are represented as:

[0050] Deep vein catheter 1, arterial end a of the dialysis line, venous end v of the dialysis line, arterial end A of the deep vein catheter, venous end V of the deep vein catheter;

[0051] First quantitative loop assembly 100, second quantitative loop assembly 200, arterial connection tube 10, venous connection tube 20;

[0052] First quantitative loop 101, No. 1 annular area connection tube 101a, first interface end 101b, second interface end 101c;

[0053] Second quantitative loop 201, No. 2 interface end 201b, No. 3 interface end 201c

[0054] A1 three-way node A1, A2 three-way node A2, A3 three-way node A3;

[0055] V1 three-way node V1, V2 three-way node V2, V3 three-way node V3;

[0056] f1 clamp valve f1, f2 clamp valve f2, f3 clamp valve f3, f4 clamp valve f4;

[0057] K1 clamp valve k1, K2 clamp valve k2, K3 clamp valve k3, K4 clamp valve k4. Detailed implementation method

[0058] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model. It should be noted that for the convenience of description in this application, the "left side" in the current view is taken as the "first end", the "right side" is taken as the "second end", the "upper side" is taken as the "first end", and the "lower side" is taken as the "second end". The purpose of such description is to clearly express the technical solution and should not be construed as an improper limitation of the technical solution of this application.

[0059] A central venous catheter connection device for hemodialysis, which is used to connect the deep venous catheter 1 and the dialysis pipeline.

[0060] The connecting deep venous catheter 1 has a deep venous catheter arterial end A and a deep venous catheter venous end V.

[0061] The dialysis pipeline has a dialysis pipeline arterial end a and a dialysis pipeline venous end v.

[0062] It further includes:

[0063] An arterial connection tube 10, which is used to connect the deep venous catheter arterial end A and the dialysis pipeline arterial end a.

[0064] A venous connection tube 20, which is used to connect the deep venous catheter venous end V and the dialysis pipeline venous end v.

[0065] A first quantitative ring assembly 100, which can connect the deep venous catheter arterial end A and the venous connection tube 20 so that the deep venous catheter arterial end A is connected to the dialysis pipeline venous end v.

[0066] A second quantitative ring assembly 200, which can connect the deep venous catheter venous end V and the arterial connection tube 10 so that the deep venous catheter venous end V is connected to the dialysis pipeline arterial end a.

[0067] In a specific embodiment, please refer to the attached Figure 1 、 2 As shown, in terms of the connection method, the first quantitative ring assembly 100 includes:

[0068] A first quantitative ring 101, which has a first annular area connection tube 101a; the first annular area connection tube 101a is connected to the body of the first quantitative ring 101; the first quantitative ring 101 has a first interface end 101b and a second interface end 101c.

[0069] In a specific embodiment, please refer to the attached Figure 1 、 2As shown, in terms of the connection method, a three-way node A1 of No. A1 is provided on the arterial connection tube 10, and the first annular area connection tube 101a is communicated with the three-way node A1 of No. A1; a clip valve k2 of No. K2 is provided on the first annular area connection tube 101a.

[0070] In a specific embodiment, please refer to the appendix Figure 1 、 2 As shown, in terms of the connection method, the first interface end 101b and the three-way node V1 of No. V1 are connected through the first connection tube 110b;

[0071] A clip valve k4 of No. K4 is provided on the first connection tube 110b;

[0072] The second interface end 101c and the three-way node V2 of No. V2 are connected through the second connection tube 110c;

[0073] A clip valve k1 of No. K1 is provided on the second connection tube 110c;

[0074] The three-way node of No. V2 and the three-way node of No. V1 are provided on the venous connection tube 20, and the three-way node of No. V1 is arranged close to the venous end V of the deep venous catheterization;

[0075] The three-way node of No. V2 is located downstream of the three-way node of No. V1, and a clip valve k3 of No. K3 is arranged between them.

[0076] In a specific embodiment, please refer to the appendix Figure 1 、 2 As shown, in terms of the connection method, the second metering loop assembly 200 includes:

[0077] The second metering loop 201, which has a second annular area connection tube 201a;

[0078] The second annular area connection tube 201a is connected to the three-way node V3 of No. V3;

[0079] The three-way node V3 of No. V3 is located between the three-way node V1 of No. V1 and the clip valve k3 of No. K3;

[0080] The second metering loop 201 has a second interface end 201b and a third interface end 201c.

[0081] In a specific embodiment, please refer to the appendix Figure 1 、 2 As shown, in terms of the connection method, the second interface end 201b is communicated to the three-way node A2 of No. A2 through the second connection tube 202b;

[0082] A clip valve f1 of No. f1 is provided on the second connection tube 202b;

[0083] The third interface end 201c is connected to the three-way node A3 of No. A3 through the No. 3 connection tube 202c;

[0084] A clip valve f4 is provided on the 3rd connecting pipe 202c.

[0085] In a specific embodiment, please refer to the appendix Figure 1 、 2 As shown, in terms of the connection method, a clip valve f3 is provided between the A3 three-way node A3 and the A2 three-way node A2.

[0086] In a specific embodiment, please refer to the appendix Figure 1 、 2 As shown, in terms of the connection method, the A3 three-way node A3 is arranged near the arterial end a of the dialysis pipeline;

[0087] The A2 three-way node A2 is located between the A1 three-way node A1 and the A3 three-way node A3.

[0088] The specific working principle and usage method of this central venous catheter connection device for hemodialysis are as follows:

[0089] Embodiment 1, the normal state as shown in the appendix Figure 3 After connecting to the machine in the normal state: Both the f3 clip valve f3 and the K4 clip valve k4 are opened.

[0090] Embodiment 2, the state after connecting to the machine as shown in the appendix Figure 4 As shown:

[0091] When connecting to the machine (left side), close the K2 clip valve k2, close the f2 clip valve f2, close the K3 clip valve k3, open the f1 clip valve f1 and the f4 clip valve f4, fill the quantitative ring (yellow), and realize the connection of a - A;

[0092] When connecting to the machine (right side), close the K2 clip valve k2, close the f2 clip valve f2, close the K3 clip valve k3, open the K1 clip valve k1 and the K4 clip valve k4, and realize the connection of v - V.

[0093] Embodiment 3, the flow compensation state when the flow rate is insufficient in case of failure as shown in the appendix Figure 5 As shown: Open the f2 clip valve f2 or the K2 clip valve k2, and supplement the flow through the quantitative ring.

[0094] Embodiment 4, the state of connection between the arterial end a of the dialysis pipeline and the venous end V of the deep venous catheter; and Figure 6

[0095]

[0096] The state of connection between the arterial end A of the deep venous catheter and the venous end v of the dialysis pipeline, that is, complete connection, A - v, V - a are connected. The operation is as follows: Open the K2 clip valve k2, close the f1 clip valve f1 and the f3 clip valve f3;

[0096] Close the K4 clip valve k4 and the K3 clip valve k;

[0097] Close the K3 pinch valve k3 and open the F2 pinch valve f2;

[0098] Open the F4 pinch valve f4.

[0099] Obviously, the above embodiments are only examples for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A central venous catheter connection device for hemodialysis, used to connect a deep venous catheter (1) with a dialysis line, The connecting deep vein catheter (1) comprises a deep vein catheter arterial end (A) and a deep vein catheter venous end (V); The dialysis tubing has a dialysis tubing arterial end (a) and a dialysis tubing venous end (v); It is characterized in that Also includes: An arterial connecting tube (10) for connecting the arterial end (A) of the deep vein catheter and the arterial end (a) of the dialysis line; A venous connecting tube (20) for connecting the venous end (V) of the deep venous catheter and the venous end (v) of the dialysis line; A first quantitative loop assembly (100), which is capable of connecting the deep vein catheter arterial end (A) and the venous connecting tube (20), so that the deep vein catheter arterial end (A) is connected to the dialysis line venous end (v); The second quantitative loop assembly (200) is capable of connecting the venous end (V) of the deep vein catheter and the arterial connecting tube (10) so that the venous end (V) of the deep vein catheter is connected to the arterial end (a) of the dialysis line.

2. The central venous catheter connecting device for hemodialysis according to claim 1, characterized in that: The first quantitative ring assembly (100) comprises: A first quantitative ring (101) having a first annular zone connecting tube (101a); The first annular zone connecting pipe (101a) is connected to the body of the first quantitative ring (101); The first quantitative ring (101) has a first interface end (101b) and a second interface end (101c).

3. The central venous catheter connecting device for hemodialysis according to claim 2, characterized in that: The artery connecting pipe (10) is provided with a three-way node (A1) No. A1, and the first annular zone connecting pipe (101a) is connected to the three-way node (A1) No. A1; The No. 1 annular zone connecting pipe (101a) is provided with a No. K2 clamp valve (k2).

4. The central venous catheter connecting device for hemodialysis according to claim 3, characterized in that: The first interface end (101b) is connected to the V1 three-way node (V1) via a first pipe (110b); The first connecting pipe (110b) is provided with a clamp valve (k4) No. K4; The second interface end (101c) is connected to the V2 three-way node (V2) via a second pipe (110c); The second connecting pipe (110c) is provided with a clamp valve (k1) No. K1; The three-way node No. V2 and the three-way node No. V1 are arranged on the venous connecting tube (20), and the three-way node No. V1 is arranged close to the venous end (V) of the deep venous catheter; The three-way node No. V2 is located downstream of the three-way node No. V1, and a clamp valve No. K3 (k3) is arranged between the two.

5. The central venous catheter connecting device for hemodialysis according to claim 4, characterized in that: The second quantitative ring assembly (200) comprises: A second quantitative ring (201) having a second annular zone connecting tube (201a); The second annular zone connecting pipe (201a) is connected to the V3 three-way node (V3); The V3 three-way node (V3) is located between the V1 three-way node (V1) and the K3 clamp valve (k3); The second quantitative ring (201) has a second interface end (201b) and a third interface end (201c).

6. The central venous catheter connecting device for hemodialysis according to claim 5, characterized in that: The second interface end (201b) is connected to the A2 three-way node (A2) through the second pipe (202b); The No. 2 pipe (202b) is provided with a No. f1 clamp valve (f1); The third interface terminal (201c) is connected to the A3 three-way node (A3) via the third pipe (202c); The No. 3 pipe (202c) is provided with a No. f4 clamp valve (f4).

7. The central venous catheter connecting device for hemodialysis according to claim 6, characterized in that: A clamp valve (f3) is provided between the three-way node (A3) No. A3 and the three-way node (A2) No. A2.

8. The central venous catheter connecting device for hemodialysis according to claim 7, characterized in that: The A3 three-way node (A3) is arranged close to the arterial end (a) of the dialysis circuit; The A2 three-way node (A2) is located between the A1 three-way node (A1) and the A3 three-way node (A3).

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