WO2005110521A1

WO2005110521A1 - A medical catheter used for perfusion or discharge

Info

Publication number: WO2005110521A1
Application number: PCT/CN2005/000691
Authority: WO
Inventors: Hongli Wang
Original assignee: Hongli Wang
Priority date: 2004-05-19
Filing date: 2005-05-19
Publication date: 2005-11-24
Also published as: CN1579569A; CN100389839C

Abstract

A medical catheter used for perfusion or discharge is composed of a perfusion tube (1) and a waste liquid educing tube (2). The outer diameter of the perfusion tube (1) is less than the inner diameter of the waste liquid educing tube (2). There is an insert hole (4) on the tube wall of the waste liquid educing tube (2) for the perfusion tube (1) passes through. One end of the perfusion tube (1) is inserted into the lumen through the insert hole (4) and slide out of the front-end of the waste liquid educing tube (2), and then into a body cavity. The head portion of the end of the perfusion tube (1) is hemispherical, or tightly covered by a hemispherical cup (7), which is made of soft material. The other end of the perfusion tube (1) is out of the waste liquid educing tube (2), and acts as a port to connect to a therapy apparatus or a liquid tank for perfusing the liquid form the outside of the body cavity into the cavity.

Description

TECHNICAL FIELD

The invention relates to a medical irrigation and drainage catheter, which is a irrigation and drainage catheter used for colon dialysis or transintestinal treatment or infusion of liquid or other cavity cavity drainage fluid. Background technique

The Chinese patents 89108493 and 00124342.X of the present inventors respectively disclose two kinds of irrigation and drainage catheters, the former is an irrigation and drainage catheter provided with a human body gas injection system on the wall of the injection pipe, and the latter is a drainage pipe (or cavity door) The wall of the pipe is provided with an irrigation and drainage duct for an air injection system. The human body gas injection system includes an internal gas injection tube placed in front of the injection tube, and an internal gas injection tube which is in communication with the internal gas injection tube and is embedded in the tube wall of the liquid injection tube, and further includes an air injection device and an air injection observation bag. The drainage pipe gas injection system includes a chamber valve gas pan, a chamber valve gas pipe, a gas injector and a gas pan observation bag, wherein the chamber valve gas pipe is embedded in the pipe wall of the waste liquid precipitation pipe. . Since the above two inventions are provided with air suffocation at different parts of the irrigation and drainage catheter, they can better control the liquid flow of the catheter inserted into the cavity during irrigation and drainage and reduce discomfort, and at the same time prevent the occurrence of waste fluid in the human body Leakage during discharge. However, the two types of irrigation and drainage catheters described above do not describe the slidability of the injection tube during the insertion into the human cavity, the trauma or scratches that may be caused in the human cavity, nor the placement of the waste liquid extraction tube into the human body. The shape of the waste liquid precipitation hole in the tube wall of the body part. Summary of the invention

The invention solves the technical defect that the irrigation and drainage catheter in the prior art is susceptible to trauma to the cavity wall of the human body during the insertion process, and designs a irrigation tube with a single tube structure to avoid trauma to the cavity wall.

The present invention is realized as follows: A medical irrigation and drainage catheter includes a liquid injection pipe and a waste liquid precipitation tube, and an outer diameter of the liquid injection tube is smaller than an inner diameter of the Xiamen liquid precipitation tube, and is characterized in that the waste liquid is precipitated. A liquid injection tube socket adapted to the outer diameter of the liquid injection tube is provided on the tube wall, and one end of the liquid injection tube passes through the insertion hole. The hole is inserted into the lumen of the waste liquid precipitation tube and can slide freely to the outside of the port at the front end of the waste liquid precipitation tube to penetrate into the cavity of the human body. The tube wall of the 10-20CM part of the head of the injection tube at this end is provided with a plurality of uniformly arranged small holes for injecting liquid into the human cavity. The other end of the liquid injection tube is outside the wall of the waste liquid precipitation tube and serves as a port for injecting liquid into the cavity outside the human cavity, which is closely connected with the relevant treatment machine or perfusion device or liquid storage container. One end of the head of the waste liquid precipitation tube is inserted into the human body at about 10-20 cm, and the other end is connected to an extension tube for draining the waste liquid. The opening of the waste liquid extraction pipe head may be flat or oblique.

The head of the liquid injection tube is tightly sleeved with an outer cap made of a soft material. The outer cap may be hemispherical, semi-ellipsoidal, or other shapes of which the head of the outer cap is smooth and curved. The liquid hole can be one or more.

The outer peripheral edge of the end of the end of the waste liquid precipitation tube that penetrates into the cavity of the human body has a smooth transitional arc shape. The exit hole may be one or more oval holes. The waste liquid exudation hole is preferably provided on the wall of the tube where the waste liquid precipitation tube is placed into the human body. The waste liquid precipitating tube is made of elastic medical polymers or materials such as silica gel or latex.

A scale is provided on the liquid injection tube.

In the present invention, a socket adapted to the outer diameter of the liquid injection pipe is provided on the wall of the waste liquid precipitation pipe. One end of the liquid injection pipe can be inserted into the cavity of the waste liquid precipitation pipe through the socket and can be extended to the waste through sliding The port on the front end of the liquid extraction tube penetrates into the cavity of the human body. Therefore, the simple structure of the present invention allows the liquid injection tube to be easily probed into the human cavity; The transitional curved surface can avoid trauma or scratch to the cavity wall when the injection tube is inserted into the human cavity.

The head of the injection tube is tightly sleeved or combined with an outer cap made of soft material, which can effectively prevent the trauma or scratch of the cavity wall when the head of the injection tube is inserted into the human cavity, and can greatly reduce the discomfort of the human body The soft material can be latex, rubber, silicone, or a soft and elastic medical polymer material.

The outer peripheral edge of the end of the end of the waste liquid precipitation tube that penetrates into the cavity of the human body has a smooth transition arc, so that when the waste liquid precipitation tube is inserted into the human body, the wall of the cavity of the human body will not be scratched.

One or more waste liquid seepage holes are provided on the waste liquid precipitation tube to increase the leakage channel of the waste liquid. Exudation of waste liquid.

The elliptical hole of the waste liquid precipitation tube can also prevent wounds or scratches when it is inserted into the human body cavity, and at the same time can increase the amount of waste liquid exudation. BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the present invention with an injection cap with an outer cap.

FIG. 3 is a schematic structural diagram of another embodiment of the present invention with an injection cap with an outer cap.

Fig. 4 is a schematic structural diagram of the present invention with a hemispherical head of the injection tube.

Fig. 7 is a schematic structural diagram of the present invention in which the waste liquid precipitation tube has an oblique head shape.

FIG. 8 is a sectional view of FIG. 7.

FIG. 5 is an enlarged view of the part I in FIG. 7 when the waste liquid precipitation tube is flat.

FIG. 6 is an enlarged view of another form of the part I in FIG. 7 when the waste liquid precipitation tube is flat.

FIG. 9 is a partially enlarged view of a part I in FIG. 7.

FIG. 10 is an enlarged view of another form of the part I in FIG. 7.

detailed description

Example 1:

As shown in FIGS. 1 and 4, FIG. 1 includes a liquid injection pipe 1 and a waste liquid precipitation pipe 2. The outer diameter of the liquid injection pipe 1 is smaller than the inner diameter of the waste liquid precipitation pipe 2. Filling tube socket 4 with a matching outer diameter of the filling tube 1; one end of the filling tube 1 is inserted into the waste liquid precipitation tube 2 through the socket 4 and can be extended to the port at the front of the waste liquid precipitation tube through free sliding The diameter of the injection tube socket 4 can be the same as or slightly larger than the diameter of the injection tube 1 so that the injection tube 1 can be slid into the waste liquid precipitation tube 2 without being too large. The loosening prevents the liquid injection pipe 1 from being smoothly inserted by the relying action of the waste liquid precipitation pipe 2. The head of the liquid injection tube 1 of FIG. 1 is a smooth transition arc surface, and the tube wall of the 10-20CM part of the head of the liquid injection tube 1 at the end is provided with a plurality of uniformly arranged small holes 9 for injecting liquid into the human cavity. There is also a small hole 9 at the top of the head. The head of the liquid injection tube 1 may also be hemispherical. As shown in FIG. 4, the hemispherical part in FIG. 4 should be made soft and tough, and the top of the hemispherical shape has small holes 9 filled with liquid. The other end of the injection tube 1 is outside the wall of the waste liquid precipitation tube 2 and serves as a human body. The port for injecting liquid into the cavity outside the cavity is tightly connected with the relevant treatment machine or perfusion device or liquid storage container. One end of the head of the waste liquid precipitation tube 2 is placed into the human body at about 10-20CM, and the other end is connected to an extension tube for draining the waste liquid. The opening at the head of the waste liquid precipitation tube 2 in FIG. 1 is a flat head, or an oblique head may be used as shown in FIG. 7. The structures of FIGS. 1 and 4 can not only ensure the convenient insertion of the liquid injection tube 1, but also can avoid the trauma or scratch of the cavity wall when the liquid injection tube is inserted into the human cavity.

Example 2:

As shown in Fig. 2 and Fig. 3, the head of the liquid injection tube 1 is tightly sleeved with an outer cap 7 made of soft material. The outer cap 7 is semi-ellipsoidal, and can also be semi-spherical or other shapes with smooth arcs. The top of the outer cap 7 in FIG. 2 is provided with a liquid outlet hole 10, which may be one or more. Since the outer cap is added, the head of the liquid injection tube 1 may have no special requirements for smoothness. As shown in FIG. Not a smooth arc. The soft material can be latex, rubber, silicone, or soft and elastic medical polymer materials, or other skin-friendly soft materials. The outer cap 7 can be fixed to the head of the injection tube 1 by bonding, socketing, snapping or other forms. The head of the injection tube 1 is tightly sleeved or combined with an outer cap made of a soft material, which can effectively prevent trauma or scratches on the cavity wall when the head of the injection tube is inserted into the human cavity, and can greatly reduce the Discomfort.

Example 3:

As shown in Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Fig. 10, the outer peripheral edge 6 of the end of the end of the waste liquid extraction tube 2 that penetrates into the cavity of the human body has a smooth transition arc, as shown in Figs. 7, 9, and 10, of which FIG. 5 and the enlarged view of the figure, the inner peripheral edge 8 of FIG. 6 also has a smooth transition arc shape. The curved edge is adopted, and the waste liquid extraction tube 2 will not be scratched when it is inserted into the human body. Human cavity wall. One or more waste liquid seepage holes 3 are provided on the wall of the part where the head of the waste liquid precipitation pipe is inserted into the human body, and one or more waste liquid seepage holes 3 are provided to increase the waste liquid seepage channel. Facilitate the leakage of waste liquid. The waste liquid exudation hole 3 is preferably provided on the wall of the waste liquid precipitation tube 2 which is placed in the body part. The waste liquid precipitation tube 2 is made of elastic medical polymer or silicone or latex.

The waste liquid exudation hole 3 may be one or more oval holes, as shown in FIG. 8. The elliptical hole of the waste liquid precipitation tube can also prevent wounds or scratches when it is inserted into the human cavity, and it can also facilitate the leakage of waste liquid. Effectively increase the exudation space of exudate and increase the amount of exudate. The hole can also be another hole with a smooth transition.

Figures 1 to 8 are provided with a scale 5 on the liquid injection tube 1. The scale 5 can be printed or etched on the liquid injection tube 1. The liquid injection tube 1 with a scale is probed into the human cavity, and can be observed through the scale 5. Insertion depth.

Replacement page (Article 26)

Claims

Rights request

1. A medical irrigation and drainage catheter, comprising a liquid injection pipe and a waste liquid precipitation tube, an outer diameter of the liquid injection tube '} and an inner diameter of the waste liquid precipitation tube, characterized in that the waste liquid precipitation tube is The wall is provided with a liquid injection tube socket adapted to the outer diameter of the liquid injection tube. One end of the liquid injection tube is inserted into the waste liquid precipitation tube lumen through the jack and can be extended to the front end of the waste liquid precipitation tube by sliding The head of one end of the liquid injection tube that penetrates into the human cavity is hemispherical or a smooth transition arc, and the other end of the liquid injection tube is outside the wall of the waste liquid precipitation tube and As a port for injecting liquid into the body cavity.

2. The medical irrigation and drainage catheter according to claim 1, characterized in that the end of the liquid injection tube which is inserted into the human cavity is tightly sleeved or combined with an outer cap made of a soft material.

3. The medical irrigation and drainage catheter according to claim 2, wherein the outer cap can be provided with a liquid discharge hole.

4. The medical irrigation and drainage catheter according to claim 1 or 2 or 3, characterized in that the outer peripheral edge of the end of the end of the waste liquid outflow pipe that penetrates into the cavity of the human body has a smooth transition arc shape.

5. The medical irrigation and drainage catheter according to claim 4, wherein a waste liquid exudation hole is provided on the waste liquid precipitation tube, and the waste liquid exudation hole is provided on the waste liquid precipitation tube. Before the hole can be inserted into the wall of the body part. .

6. The medical irrigation and drainage catheter according to claim 5, wherein at least one of the waste liquid exudation holes is an oval hole.

7. The medical irrigation and drainage catheter according to claim 5, wherein the head of the waste liquid precipitation tube is oblique.

8. The medical irrigation and drainage catheter according to claim 5, characterized in that a plurality of rows of uniformly arranged nozzles are arranged on the tube wall of the injection tube inserted into the human cavity at a distance of 10-20 cm from the head of the injection tube. A small hole filled with fluid in the human cavity.

9. The medical irrigation and drainage catheter according to claim 5, wherein a scale is provided on the infusion tube.

10. The medical irrigation and drainage catheter according to claim 5, characterized in that the waste liquid precipitation tube is made of a medical polymer or silicone or latex with elasticity. . Replacement page (Article 26)