CN106512178B

CN106512178B - One-step drainage catheter for preventing leakage

Info

Publication number: CN106512178B
Application number: CN201610949568.7A
Authority: CN
Inventors: 闻潮声; 何辰; 周伟
Original assignee: Guangdong Baihe Medical Technology Co ltd
Current assignee: Guangdong Baihe Medical Technology Co ltd
Priority date: 2016-11-02
Filing date: 2016-11-02
Publication date: 2023-07-18
Anticipated expiration: 2036-11-02
Also published as: CN106512178A

Abstract

The invention discloses a leakage-proof one-step drainage catheter, which comprises a drainage tube body, a shaping core needle, and a Y-shaped seat, wherein the shaping core needle can penetrate through the drainage tube body, the Y-shaped seat comprises a first interface, a second interface and a third interface, the first interface and the second interface are positioned on the same straight line, the first interface is communicated with the drainage tube body, the second interface is connected with the shaping core needle, a Y-shaped rotating core is arranged in the Y-shaped seat, and the Y-shaped rotating core enables the first interface to be respectively communicated with the second interface or the third interface; the third interface is communicated with an epitaxial tube, and a leakage-proof valve is arranged in the epitaxial tube. The drainage catheter can be conveniently used for placing a tube by a one-step puncture method, so that the operation steps are reduced, the operation difficulty is reduced, and the efficiency is improved; the drainage catheter is used for sealing the inside of the catheter body in a leakage-proof way, so that the sealing performance of the catheter body in a non-treatment period is ensured, and the use performance of the catheter body is not affected.

Description

One-step drainage catheter for preventing leakage

Technical Field

The invention relates to a medical appliance, in particular to a drainage catheter.

Background

The drainage catheter belongs to an interventional medical catheter, and a catheter body is required to be placed into a patient body in a puncture and catheter placement mode. The most commonly used puncture methods at present are a seldinger puncture method and a one-step puncture method, wherein the one-step puncture method is simpler and faster to operate than the seldinger puncture method, and the proportion of the one-step puncture method in the drainage catheter placement is higher and higher at present. The one-step puncture method is to place a shaping core needle in the catheter to protect the tube body from being bent by resistance force when the tube body enters the human body, take out the core needle after the tube body enters the human body, connect the drainage catheter with a negative pressure drainage machine and extract waste liquid or gas in the drainage body through negative pressure. The drainage catheter can be repeatedly used for a plurality of times within a certain time, the catheter body and the negative pressure drainage catheter are disconnected after the drainage treatment is finished, the common drainage catheter can be provided with a catheter clamp or a sealing protective cap for sealing the catheter, so that air is prevented from entering a patient through the catheter body, but after the drainage catheter is clamped by the catheter clamp for a long time, the catheter body can be slowly restored or can not be restored due to long-term fixing extrusion, the flow of the catheter body is influenced, and the drainage effect is further influenced; if the sealing is carried out by using the sealing protective cap, the sealing protective cap needs to be replaced after the drainage treatment is finished every time, so that waste is caused.

Disclosure of Invention

The invention aims to solve the technical problems that: the leakage-proof drainage catheter is provided, and in the drainage treatment process, the tightness of the catheter body is ensured, and the leakage of air or liquid is avoided.

The invention solves the technical problems as follows: the one-step drainage catheter comprises a drainage tube body and a shaping core needle, wherein the shaping core needle can penetrate through the drainage tube body, and further comprises a Y-shaped seat, the Y-shaped seat comprises a first interface, a second interface and a third interface, the first interface and the second interface are positioned on the same straight line, the first interface is communicated with the drainage tube body, the second interface is connected with the shaping core needle, a Y-shaped rotating core is arranged in the Y-shaped seat, and the Y-shaped rotating core enables the first interface to be communicated with the second interface or the third interface respectively; the third interface is communicated with an epitaxial tube, and a leakage-proof valve is arranged in the epitaxial tube.

As a further improvement of the technical scheme, the leakproof valve is formed by injection molding of elastic plastics, and a straight notch is formed in the middle of the leakproof valve.

As a further improvement of the technical scheme, the epitaxial tube further comprises a joint upper cover and a joint lower cover, the leakage-proof valve is positioned in the joint upper cover and the joint lower cover, and the joint upper cover is in sealing connection with the joint lower cover.

As a further improvement of the technical scheme, the extension tube is connected with the drainage tube body in a sealing way through glue and the Y-shaped joint seat.

As a further improvement of the technical scheme, the Y-shaped rotary core is in interference fit with the Y-shaped seat; the Y-shaped rotary core comprises a first channel and a second channel, wherein the first channel is communicated with a first interface and a second interface, and the second channel is communicated with the first interface and a third interface.

As a further improvement of the above technical solution, the inner diameter of the first channel is smaller than the inner diameter of the first interface; the inner diameter of the second channel is smaller than the inner diameter of the third interface.

The beneficial effects of the invention are as follows: the drainage catheter can be conveniently used for placing a tube by a one-step puncture method, so that the operation steps are reduced, the operation difficulty is reduced, and the efficiency is improved; the drainage catheter is used for sealing the inside of the catheter body in a leakage-proof way, so that the sealing performance of the catheter body in a non-treatment period is ensured, and the use performance of the catheter body is not affected.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is evident that the drawings described are only some embodiments of the invention, but not all embodiments, and that other designs and drawings can be obtained from these drawings by a person skilled in the art without inventive effort.

FIG. 1 is a schematic general construction of the present invention;

FIG. 2 is a schematic illustration of the operation of the rotary core of the lancing process of the present invention;

fig. 3 is a schematic illustration of the operation of the spin core of the drainage process of the present invention.

Detailed Description

The conception, specific structure, and technical effects produced by the present invention will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, features, and effects of the present invention. It is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and that other embodiments obtained by those skilled in the art without inventive effort are within the scope of the present invention based on the embodiments of the present invention. In addition, all coupling/connection relationships mentioned herein do not refer to direct connection of the components, but rather, refer to the fact that a more optimal coupling structure may be formed by adding or subtracting coupling aids depending on the particular implementation. The technical features in the invention can be interactively combined on the premise of no contradiction and conflict.

Referring to fig. 1-3, a one-step drainage catheter capable of preventing leakage comprises a drainage tube body 1 and a shaping core needle 2, wherein the shaping core needle 2 can penetrate through the drainage tube body 1, the one-step drainage catheter further comprises a Y-shaped seat 3, the Y-shaped seat 3 comprises a first interface 31, a second interface 32 and a third interface 33, the first interface 31 and the second interface 32 are positioned on the same straight line, the first interface 31 is communicated with the drainage tube body 1, the second interface 32 is connected with the shaping core needle 2, a Y-shaped rotary core 4 is arranged in the Y-shaped seat 3, and the Y-shaped rotary core 4 enables the first interface 31 to be communicated with the second interface 32 or the third interface 33 respectively; the third port 33 is communicated with an epitaxial tube 5, and a leak-proof valve 51 is arranged in the epitaxial tube 5.

When the puncture operation is needed, referring to fig. 2, the Y-shaped rotary core is rotated to enable the first interface to be communicated with the second interface, and the fixed core needle can be smoothly inserted into the catheter at the moment, so that the puncture and the tube placement can be smoothly performed according to the operation flow of a part of methods; referring to fig. 3, after the tube placement is completed, the fixed core needle is pulled out, and then the rotary core is rotated, so that the first interface is communicated with the third interface, and at this time, drainage operation can be performed.

Further as a preferred embodiment, the leakage-proof valve 51 is formed by injection molding of elastic plastic, and the middle of the leakage-proof valve 51 comprises a straight notch. Preferably, the leak-proof valve can be made of silica gel material, and good rebound resilience of the silica gel is utilized, so that the leak-proof valve is sealed under the condition of no pressure, and air is prevented from entering. When the device is used, after the tube is placed, the fixed core needle is pulled out, the rotary core is adjusted to the drainage direction, the fixed core needle is connected with the negative pressure drainage machine through the leakage-proof joint, the leakage-proof valve is extruded, the incision is changed into an O shape from airtight, the drainage channel is opened, and drainage treatment is started; after the drainage treatment is finished, the connection of the drainage catheter and the negative pressure drainage machine is interrupted, the shape of the leakage-proof valve is not restored after the leakage-proof valve is extruded, the drainage channel is closed, external air can be prevented from entering the patient body through the tube body, and meanwhile, the liquid in the patient body outside the treatment period is prevented from flowing out of the tube body under the influence of gravity or internal-external pressure difference.

Further as a preferred embodiment, the epitaxial tube 5 further comprises a joint upper cover 52 and a joint lower cover 53, the leak-proof valve 51 is located in the joint upper cover 52 and the joint lower cover 53, and the joint upper cover 52 is in sealing connection with the joint lower cover 53.

Further as a preferred embodiment, the extension tube 5 and the drainage tube body 1 are in sealing connection with the Y-shaped joint seat 3 through glue.

Further as a preferred embodiment, the Y-shaped rotary core 4 is in interference fit with the Y-shaped seat 3; the Y-shaped rotary core 4 comprises a first channel 41 and a second channel 42, the first channel 41 is communicated with the first interface 31 and the second interface 32, and the second channel 42 is communicated with the first interface 31 and the third interface 33. Through the interference fit of the Y-shaped rotary core and the Y-shaped connecting seat, the Y-shaped rotary core can play a sealing role, and accidental communication between the second interface and the third interface is prevented, so that air leakage is caused.

Further as a preferred embodiment, the first channel 41 has an inner diameter smaller than the inner diameter of the first port 31; the second passage 42 has an inner diameter smaller than the inner diameter of the third port 33.

While the preferred embodiments of the present invention have been illustrated and described, the present invention is not limited to the embodiments, and various equivalent modifications and substitutions can be made by one skilled in the art without departing from the spirit of the present invention, and these are intended to be included in the scope of the present invention as defined in the appended claims.

Claims

1. The utility model provides a one-step method drainage pipe of preventing leaking, is including drainage tube body (1), design core needle (2) can run through drainage tube body (1), its characterized in that: the Y-shaped connecting seat (3) comprises a first interface (31), a second interface (32) and a third interface (33), wherein the first interface (31) and the second interface (32) are positioned on the same straight line, the first interface (31) is communicated with the drainage tube body (1), the second interface (32) is connected with the shaping core needle (2), a Y-shaped rotating core (4) is arranged in the Y-shaped connecting seat (3), and the Y-shaped rotating core (4) enables the first interface (31) to be respectively communicated with the second interface (32) or the third interface (33); the third interface (33) is communicated with an epitaxial tube (5), and a leakage-proof valve (51) is arranged in the epitaxial tube (5); the leakage-proof valve (51) is formed by injection molding of elastic plastic, and a straight notch is formed in the middle of the leakage-proof valve (51); the epitaxial tube (5) further comprises a joint upper cover (52) and a joint lower cover (53), the leakage-proof valve (51) is positioned in the joint upper cover (52) and the joint lower cover (53), and the joint upper cover (52) is connected with the joint lower cover (53) in a sealing way; the extension tube (5) is connected with the drainage tube body (1) in a sealing way through glue and the Y-shaped joint seat (3); the Y-shaped rotary core (4) is in interference fit with the Y-shaped connecting seat (3); the Y-shaped rotary core (4) comprises a first channel (41) and a second channel (42), the first channel (41) is communicated with the first interface (31) and the second interface (32), and the second channel (42) is communicated with the first interface (31) and the third interface (33); the inner diameter of the first channel (41) is smaller than the inner diameter of the first interface (31); the second passage (42) has an inner diameter smaller than the inner diameter of the third port (33).