CN112546404A - Anti-damage catheter with function of accidental pulling out - Google Patents

Abstract

An injury-preventing catheter with an intentionally-pulled out function relates to the technical field of medical instruments and comprises a soft catheter body, wherein an inner layer air bag and an outer layer air bag are arranged at the front part of the catheter body, the inner layer air bag is positioned in a bag cavity of the outer layer air bag, the outer wall of the inner layer air bag is provided with sharp teeth for puncturing the outer layer air bag, the inner wall of the outer layer air bag is provided with sharp teeth for puncturing the inner layer air bag, and the outer wall of the outer layer air bag is coated with an elastic, breathable and water-permeable water-; the rear part of the catheter body is provided with an inner layer air valve and an outer layer air valve, the inner layer air valve is communicated with the inner layer air bag, and the outer layer air valve is communicated with the outer layer air bag. The catheter provided by the invention is particularly suitable for patients with obnubilation.

Description

Anti-damage catheter with function of accidental pulling out

Technical Field

The invention relates to the technology of medical instruments, in particular to a technology of an anti-injury catheter with an intentionally pulled-out function.

Background

The catheter is a hose which is inserted into the bladder through the urethra to drain urine, the catheter is usually made of natural rubber, silicon rubber or polyvinyl chloride, the front part of the catheter is provided with an air bag, after the catheter is inserted into the bladder, the air bag at the front part is inflated to expand the catheter, and the position of the catheter can be fixed by utilizing the air bag, so that the catheter is not easy to drop when being kept in the bladder.

However, some unconscious patients may perform the action of pulling out the catheter by themselves after inserting the catheter, and some patients may also pull out the catheter by accident by themselves because of forgetting that the catheter is fixed on the patient bed. In the process of accidentally pulling out the catheter, the bladder and the urethra are seriously damaged by tearing and pulling injuries of the air bag.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide the injury-preventing urinary catheter with accidental pulling-out function, which can not damage the bladder and the urethra when being pulled out accidentally.

In order to solve the technical problems, the invention provides an anti-injury urinary catheter with intentional outward pulling, which comprises a soft urinary catheter body, wherein the front part of the urinary catheter body is provided with an air bag, and the rear part of the urinary catheter body is provided with an air valve, and the anti-injury urinary catheter is characterized in that:

the outer wall of the outer air bag is coated with a layer of elastic, breathable and permeable water seepage protective film;

the catheter body is provided with two air valves at the rear part, wherein one air valve is an inner-layer air valve, the other air valve is an outer-layer air valve, the inner-layer air valve is communicated with the inner-layer air bag, and the outer-layer air valve is communicated with the outer-layer air bag.

Furthermore, a connecting channel of the inner air valve and the inner air bag and a connecting channel of the outer air valve and the outer air bag are arranged in the tube wall of the catheter body.

According to the injury-proof urinary catheter with the function of accidental pulling out, when accidental pulling out occurs, the sharp teeth on the outer wall of the inner air bag and the sharp teeth on the inner wall of the outer air bag can be used for puncturing the outer air bag and the inner air bag, and the protective film coated on the outer wall of the outer air bag can cover the sharp teeth, so that the bladder and the urethra cannot be damaged when the catheter is accidentally pulled out.

Drawings

FIG. 1 is a schematic view of a catheter with an accidental pull-out atraumatic catheter according to an embodiment of the invention, with the balloon not inflated;

FIG. 2 is a schematic view of a catheter with an accidental pull-out atraumatic catheter according to an embodiment of the present invention after balloon inflation;

fig. 3 is a schematic view of a balloon with accidental withdrawal in an atraumatic catheter, according to an embodiment of the invention.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the following description of the drawings, but the embodiments are not intended to limit the present invention, and all similar structures and similar variations using the present invention shall be included in the scope of the present invention, and the pause numbers in the present invention shall have a relation of the same.

As shown in fig. 1-3, the catheter with the intentional pulling-out and anti-injury function provided by the embodiment of the invention comprises a soft catheter body 1, wherein a balloon 2 is arranged at the front part of the catheter body;

the number of the air bags is two, wherein one air bag is an inner air bag 23, the other air bag is an outer air bag 22, the inner air bag 23 is positioned in a cavity of the outer air bag 22, the outer wall of the inner air bag 23 is provided with sharp teeth 24 for puncturing the outer air bag, the inner wall of the outer air bag 22 is provided with sharp teeth 25 for puncturing the inner air bag, and the outer wall of the outer air bag is coated with a layer of elastic, breathable and water permeable protective film 21;

the rear part of the catheter body is provided with an inner layer air valve 3 and an outer layer air valve 4, the inner layer air valve 3 is communicated with an inner layer air bag 23, the outer layer air valve 4 is communicated with an outer layer air bag 22, and a connecting channel of the inner layer air valve and the inner layer air bag and a connecting channel of the outer layer air valve and the outer layer air bag are arranged in the tube wall of the catheter body.

The application method of the embodiment of the invention is as follows:

in the initial state, the inner layer air bag 23 and the outer layer air bag 22 are in a deflated state, and the bag walls of the inner layer air bag 23 and the outer layer air bag 22 are in a loose state and cannot be punctured by the sharp teeth;

after the front end of the catheter body is inserted into the bladder, the outer air bag 22 is inflated (or filled with water) through the outer air valve 4 to expand the catheter body, so that the catheter body is fixed in position and is not easy to drop when being left in the bladder, and the water seepage protective film 21 can also generate certain elastic deformation along with the expansion of the outer air bag 22;

then, the inner air bag 23 is inflated (or filled with water) through the inner air valve 3 to expand, and the inflation (or filling) amount is proper, so that a gap is formed between the sharp teeth 24 on the inner air bag 23 and the bag wall of the outer air bag 22, and a gap is also formed between the sharp teeth 25 on the outer air bag 22 and the bag wall of the inner air bag;

normal tube drawing can be implemented only by discharging air (or water) in the inner air bag and the outer air bag through the inner air valve and the outer air valve;

when accidental forced extubation occurs (for example, a patient forcibly pulls out a catheter), the outer air bag is pressed by the bladder and the body in the urethra to contract inwards, so that the sharp teeth 24 on the inner air bag 23 touch the tightened bag wall of the outer air bag 22, the outer air bag 22 is punctured, meanwhile, the sharp teeth 25 on the outer air bag 22 also touch the bag wall of the inner air bag 23, the inner air bag 23 is also punctured, air (or water) in the two air bags leaks to the outside through the water seepage protective film 21, the two air bags are also deflated, and the water seepage protective film 21 coated on the outer wall of the outer air bag can cover the sharp teeth, so that the bladder and the urethra cannot be damaged when the catheter is accidentally pulled out.

Claims (2)

1. The utility model provides an intentional external anti-damage type catheter of pulling out in area, includes soft catheter body, the front portion of catheter body is equipped with the gasbag, and the rear portion of catheter body is equipped with pneumatic valve, its characterized in that:

the outer wall of the outer air bag is coated with a layer of elastic, breathable and permeable water seepage protective film;

the catheter body is provided with two air valves at the rear part, wherein one air valve is an inner-layer air valve, the other air valve is an outer-layer air valve, the inner-layer air valve is communicated with the inner-layer air bag, and the outer-layer air valve is communicated with the outer-layer air bag.

2. The catheter with accidental pull-out atraumatic catheter of claim 1, wherein: and a connecting channel of the inner air valve and the inner air bag and a connecting channel of the outer air valve and the outer air bag are arranged in the tube wall of the catheter body.

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