CN218923388U

CN218923388U - Non-return valve of peritoneal dialysis drainage device

Info

Publication number: CN218923388U
Application number: CN202222735748.9U
Authority: CN
Inventors: 王世鑫; 王康; 刘欣; 李敏
Original assignee: Qingdao Puruisen Medicine Science & Technology Co ltd
Current assignee: Qingdao Puruisen Medicine Science & Technology Co ltd
Priority date: 2022-10-18
Filing date: 2022-10-18
Publication date: 2023-04-28
Anticipated expiration: 2032-10-18

Abstract

The utility model discloses a non-return valve of a peritoneal dialysis drainage device, and belongs to the technical field of peritoneal dialysis drainage. The technical proposal is as follows: the hollow pipe extends out of the connector; a hose is sleeved outside the hollow pipe extending out of the connector, and a drainage tube is fixed outside the hose; the upper and lower surfaces of the outflow end of the hose are joined together at several points. The check valve provided by the utility model can play a role in preventing abdominal infection of a patient caused by countercurrent waste liquid.

Description

Non-return valve of peritoneal dialysis drainage device

Technical Field

The utility model relates to the technical field of peritoneal dialysis drainage, in particular to a non-return valve of a peritoneal dialysis drainage device.

Background

As shown in fig. 1, the existing peritoneal dialysis drainage device comprises a connection interface 1, wherein a pull ring protective cap 2 is covered on the connection interface 1, the other end of the connection interface is connected with one liquid inlet of a tee joint 3, the other liquid inlet of the tee joint 3 is connected with a transfusion tube 4, and a flow stopping clamp 5 is arranged on the transfusion tube 4; the liquid outlet of the tee joint 3 is connected with a drainage tube 6, and the drainage tube 6 is connected with a drainage bag 7. During peritoneal dialysis, the patient needs to drain the waste liquid in the abdominal cavity to the drainage bag through the connecting interface, the tee joint and the drainage tube in sequence. However, in the actual waste liquid discharge process, the phenomenon that waste liquid flows back to the connection interface from the drainage tube can occur, so that the abdominal cavity of a patient is infected, and therefore, a check valve is required to be designed between the tee joint and the drainage tube, and the waste liquid is prevented from flowing back.

Disclosure of Invention

The utility model aims to solve the technical problems that: overcomes the defects of the prior art, provides a non-return valve of a peritoneal dialysis drainage device, and plays a role in preventing the peritoneal infection of a patient caused by the countercurrent of waste liquid.

The technical scheme of the utility model is as follows:

the peritoneal dialysis drainage device check valve comprises a connector, wherein a hollow pipe is arranged in the connector and extends out of the connector; a hose is sleeved outside the hollow pipe extending out of the connector, and a drainage tube is fixed outside the hose; the upper and lower surfaces of the outflow end of the hose are joined together at several points.

Preferably, a check ball is arranged at the inflow end inside the hose, and a ball placing groove is arranged in the hollow pipe extending out of the connector.

Preferably, the outflow end of the hollow tube is flared.

Preferably, the hollow tube is made of TPEE material.

Preferably, the hose is made of PVC material.

Preferably, the upper and lower surfaces of the outflow end of the hose are welded together at several points.

Compared with the prior art, the utility model has the following beneficial effects:

1. the check valve of the utility model connects the upper surface and the lower surface of the hose together by arranging the connecting point at the outflow end of the hose so that the outflow end of the hose is flat, thereby the hose is in a closed state for a long time. When the liquid flows positively, the liquid washes the hose outflow opening, and the hose outflow opening is in an open state; when the liquid is reversed, the hose outlet is again closed by gravity and fluid mass forces. And because liquid can fill the space between hose and drainage tube pipe wall when flowing backward, the hose can receive the extrusion, becomes crooked for the export closure is tighter, thereby plays the effect that prevents that waste liquid from flowing backward from leading to patient abdominal cavity infection.

2. The utility model sets up the check ball in the hose, and set up the ball groove in the hollow tube, the check ball can block up and put the ball groove under the promotion effect of the waste liquid of countercurrent on one hand, thus prevent the waste liquid from continuing countercurrent, on the other hand can squeeze the check ball into putting the ball groove after the waste liquid is discharged, play the role of closing the drainage tube.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic diagram of a conventional peritoneal dialysis drainage device.

Fig. 2 is a schematic structural view of the check valve of the present utility model.

In the figure, 1, a connection interface; 2. pull ring protective cap; 3. a tee joint; 4. an infusion tube; 5. a flow stop clip; 6. a drainage tube; 7. a drainage bag; 8. a non-return valve; 801. a connector; 802. a hollow tube; 803. a hose; 804. a check ball; 805. a ball placement groove; 806. and (5) welding points.

Detailed Description

In order to make the technical solution of the present utility model better understood by those skilled in the art, the technical solution of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

Example 1

As shown in fig. 2, the present embodiment provides a non-return valve of a peritoneal dialysis drainage device, which includes a connector 801 made of TPEE material, wherein the connector 801 is connected to a liquid outlet of a tee 3; a TPEE hollow tube 802 is arranged in the connector 801, and the hollow tube 802 extends out of the connector 801; a PVC hose 803 is sleeved outside the hollow pipe 802 extending out of the connector 801, the hose 803 and the hollow pipe 802 can be bonded or welded together at high frequency, a drainage tube 6 is fixed outside the hose 803, and the drainage tube 6 and the connector 801 are bonded or welded together at high frequency; the upper and lower surfaces of the outflow end of the hose 803 are joined together at a plurality of points by bonding, welding, etc., preferably by welding, and the manner of welding to form the weld 806 will be described below as an example.

Working principle:

the PVC hose 803 is soft, and is influenced by gravity and a welding point 806, so that the outflow opening of the hose 803 is in a closed state for a long time. When the liquid flows forward, the liquid washes out the outlet of the hose 803, and the outlet of the hose 803 is in an open state; when the liquid is reversed, the outlet of the hose 803 is influenced by gravity and fluid mass forces, and will be closed again. And because the liquid fills the gap between the hose 803 and the wall of the drain tube 6 in countercurrent, the PVC hose 803 is squeezed and becomes bent, so that the outflow opening is closed more tightly. Therefore, the check valve 8 of the present embodiment can prevent the waste liquid in the drainage tube 6 from flowing back to the abdominal cavity, causing abdominal infection.

Example 2

On the basis of embodiment 1, the inside of the hose 803 is provided with a check ball 804 at the inflow end, the check ball 804 may be a glass ball, a ball placement groove 805 is provided in the hollow tube 802 extending out of the connector 801, and the size of the ball placement groove 805 is adapted to the check ball 804. While the hollow tube 802 is made of TPEE material and has a flared outflow end.

A glass ball is provided in the PVC hose 803, and is caught in the hose 803 by the welding point 806, and does not flow out of the outflow opening of the hose 803. Because the PVC hose 803 is soft and the hollow tube 802 made of TPEE is deformable, on one hand, even if a small amount of waste liquid flows back into the hose 803, the waste liquid can push the glass ball to move to the opening of the ball placement groove 805, thereby blocking the ball placement groove 805 and preventing the waste liquid from continuously flowing back; on the other hand, after the waste liquid is discharged, the glass ball can be extruded into the ball placement groove 805 of the hollow pipe 802 from the horn mouth, so that the drainage pipe 6 is closed, a flow stopping clamp switch is replaced, a pipeline is not required to be closed by additionally using a flow stopping clamp, the cost is saved, closing parts such as clamps are not installed, and the peritoneal dialysis drainage device is small in size and convenient to install during assembly.

Although the present utility model has been described in detail by way of preferred embodiments with reference to the accompanying drawings, the present utility model is not limited thereto. Various equivalent modifications and substitutions may be made in the embodiments of the present utility model by those skilled in the art without departing from the spirit and scope of the present utility model, and it is intended that all such modifications and substitutions be within the scope of the present utility model/be within the scope of the present utility model as defined by the appended claims. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. The peritoneal dialysis drainage device check valve is characterized by comprising a connector (801), wherein a hollow pipe (802) is arranged in the connector (801), and the hollow pipe (802) extends out of the connector (801); a hose (803) is sleeved outside the hollow pipe (802) extending out of the connector (801), and a drainage tube (6) is fixed outside the hose (803); the upper and lower surfaces of the outflow end of the hose (803) are connected together at several points.

2. The peritoneal dialysis drainage device check valve according to claim 1, wherein a check ball (804) is arranged at the inflow end inside the hose (803), and a ball placement groove (805) is arranged in a hollow tube (802) extending out of the connector (801).

3. The peritoneal dialysis drainage device non-return valve of claim 2 wherein the outflow end of the hollow tube (802) is flared.

4. The peritoneal dialysis drainage device non-return valve of claim 2 wherein the hollow tube (802) is made of TPEE material.

5. The peritoneal dialysis drainage device check valve according to claim 1, wherein the hose (803) is made of a PVC material.

6. The peritoneal dialysis drainage device non-return valve of claim 1 wherein the upper and lower surfaces of the outflow end of the hose (803) are welded together at several points.