CN106512182B

CN106512182B - Catheter

Info

Publication number: CN106512182B
Application number: CN201610981402.3A
Authority: CN
Inventors: 邹晓月; 潘慧斌; 嵇朝晖
Original assignee: First Peoples Hospital of Huzhou
Current assignee: First Peoples Hospital of Huzhou
Priority date: 2016-11-03
Filing date: 2016-11-03
Publication date: 2022-05-31
Anticipated expiration: 2036-11-03
Also published as: CN106512182A

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to a catheter. This catheter includes pipe (1) and gasbag (2), and the preceding tip of pipe (1) is provided with into urine hole (3), and gasbag (2) are connected with outside air supply through gas passage (4), pipe (1) and split type setting of gas passage (4), gasbag (2) are fixed at the preceding tip of gas passage (4), and gas passage (4) are less than into the body in urine hole (3) aperture for a diameter, and gas passage (4) are located the drainage chamber of pipe (1) and the drainage chamber of pipe (1) is worn out in accessible entering urine hole (3). Compared with the traditional catheter, the invention has the advantages of easy and labor-saving intubation and difficult blockage.

Description

Catheter

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to a catheter.

Background

A urinary catheter is a tube made of natural rubber, silicone rubber or polyvinyl chloride for conducting urine from the bladder to the outside of the body. The catheter belongs to a clinical commonly used medical invasive material, is inserted into the urethra of a patient through the urethra, extends to the bladder, and is fixed on the urethra of the patient by an air bag or a water bag at the front end part of the catheter.

The urethra of men varies in size and the front end of the catheter must pass through the narrow prostate before entering the bladder. If the catheter is too thin, urine is easily discharged from the position between the urethra and the outer wall of the catheter, and bed clothes are polluted. If the catheter is too thick, it will not pass easily through the prostate, often resulting in cannula failure. Clinically, it is also difficult to pass a catheter through the prostate with the guide wire.

The invention creation application No. 200920027500.9 discloses a guide wire catheter, which comprises a guide wire and a catheter, wherein the guide wire is arranged in the catheter. When in use, the guide wire is firstly inserted into the catheter, and after the catheter is inserted into the bladder, the guide wire is drawn out from the catheter. The invention with application number 201520867920.3 discloses a catheter which adopts a mode of matching a hard guide wire and a soft guide wire, so that the urinary catheter can pass through the lower urinary tract obstruction section caused by diseases such as prostatic hyperplasia, urethral stricture and the like.

The easy blockage of the catheter is also a common problem in the clinical use of the catheter. The invention creation application number 201310366414.1 discloses a bladder irrigation anti-clogging catheter, and the anti-clogging mode is that a filter screen is arranged outside an air bag. The invention with the application number of 201320771549.1 discloses an anti-clogging catheter, which is provided with an anti-clogging elastic small balloon, and the aim of preventing clogging is fulfilled by squeezing the elastic small balloon to enable liquid in the catheter to flow back and wash open blood clots at the catheter opening.

On the other hand, constant pressure drainage of catheters is one direction of research on catheters. The invention with application numbers 201410146265.2, 201521063715.8 and 201610198874.1 creates the disclosed technical scheme. Their basic principle is: according to the pressure value of urine in the bladder, the pressure value is used as the basis for opening the catheter control valve. When the pressure value of urine in the bladder reaches a set value, the control valve is automatically opened to discharge the urine.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide a catheter which can be conveniently inserted into a urethra and fixed in the urethra and can reduce the probability of blockage of the catheter.

In order to achieve the purpose, the technical scheme of the invention is as follows: the utility model provides a catheter, includes pipe and gasbag, and the preceding tip of pipe is provided with into urine hole, and the gasbag passes through gas passage and is connected with outside air supply, the pipe is with the split type setting of gas passage, and the preceding tip at gas passage is fixed to the gasbag, and gas passage is a diameter and is less than the body in urine hole aperture, and gas passage is located the drainage intracavity of pipe and the drainage chamber that the pipe was worn out to the accessible advances urine hole.

The gas channel of the traditional catheter is arranged on the side wall of the catheter. The gas channel is a thin tube which is arranged in a split mode with the catheter, and the front end portion of the thin tube is an air bag. When intubation, the catheter is inserted into the urethra without passing through the prostate. When the front end of the catheter reaches the prostate, the gas channel is inserted towards the bladder, so that the gas channel passes through the prostate, and the gas channel is thin, so that the gas channel can conveniently pass through the prostate. After the front end of the gas channel reaches the bladder, the gas channel can be fixed in the urethra by inflating the air bag. The catheter can then be secured in the urethra by securing the gas channel to the catheter at a point.

When the bladder is filled with urine, the bladder floats in the urine. When the patient moves, the air bag can rock in urine to drive the air channel to rock in the catheter, so that the blocking probability of the catheter can be reduced. On the other hand, the conventional urinary catheter directly leads urine out of the bladder, namely, the urine directly enters the catheter of the urinary catheter. In the application, urine firstly flows through the prostate and then enters the catheter of the catheter, and the prostate has a certain interception effect on the blockage in advance, so that the probability of blockage of the catheter can be further reduced.

As an improvement, the conduit is provided with a branch pipe, the opening of the branch pipe is provided with a rubber plug for sealing, and the gas channel passes through the rubber plug. The rubber stopper is the fixed point of gas channel and catheter. The rubber plug has three functions: firstly, seal the mouth part of the branch pipe, secondly play the effect of fixed gas passage, thirdly play the effect of fixed pipe and gas passage.

As an improvement, the opening of the branch pipe is provided with a fixed sleeve, and one end of the rubber plug is propped against the fixed sleeve. The fixed sleeve is sleeved at the opening of the branch pipe to prevent the rubber plug from being knocked down.

As a refinement, the gas channel has a guide wire. The guidewire facilitates passage of gas through the narrow prostate space.

As an improvement, the catheter is provided with a water sac, and the water sac is connected with an external water source through a liquid channel. The water bag has two functions: firstly, prevent that the urine from flowing out between urethra and the catheter outer wall, secondly play the effect of further fixed catheter.

As a further improvement, the liquid passage is a cavity on the catheter.

As an improvement, a urethral catheterization groove is arranged on the outer surface of the air bag, and a urethral catheterization groove is also arranged on the outer surface of the air channel. The urine guiding groove is convenient for guiding urine in the bladder to the catheter.

As a further improvement, the air bag is fixed with a load cell, the tail part of the catheter is provided with an electromagnetic valve, the load cell is communicated with an external controller, and the controller controls the electromagnetic valve to be opened or closed according to the pressure value measured by the load cell. The scheme realizes constant pressure discharge of urine.

As a still further improvement, the load cell communicates with an externally located controller through a transmission line, which is a guide wire. The transmission line of the load cell is simultaneously used as the guide wire by the scheme.

As a still further improvement, a water absorption gasket is arranged on the conduit. The absorbent gasket serves to further prevent urine from flowing between the urethra and the outer wall of the urinary catheter.

In conclusion, the invention has the advantages of novel design, convenient use and obvious effect. Compared with the traditional catheter, the catheter is easy and labor-saving to insert the catheter, is not easy to block the catheter, and can prevent urine from overflowing from the position between the urethra and the outer wall of the catheter to pollute the bedding.

Drawings

FIG. 1 is a cross-sectional view of the present invention showing its cooperative relationship with the prostate and urethra;

FIG. 2 is a schematic view of the construction of the air bag and the gas passage of the present invention;

fig. 3 is a schematic structural view of the rubber stopper of the present invention.

In the figure: 1. a conduit; 11. a branch pipe; 12. a rubber plug; 13. fixing a sleeve; 2. an air bag; 3. a urine inlet hole; 4. a gas channel; 5. a guide wire; 6. a water bladder; 61. a liquid channel; 7. a urethral catheterization groove; 81. a load cell; 82. an electromagnetic valve; 9. a water absorbing gasket; 101. the bladder; 102. the prostate; 103. the urethral wall.

Detailed Description

Example 1

The physiological structures of the bladder 101, prostate 102, urethral wall 103 are shown in figure 1. The catheter 1 of the catheter is only located in the urethral wall 103, between the prostate 102 is the gas channel 4, and the balloon 2 of the gas channel 4 is located in the bladder 101.

As shown in fig. 1, a urinary catheter comprises a catheter 1 and a balloon 2, wherein a front end portion of the catheter 1 is provided with a urine inlet hole 3, the front end portion of the catheter 1 is in a circular arc shape, the urine inlet hole 3 is positioned at the topmost end of the front end portion of the catheter 1, and the urine inlet hole 3 in the prior art is generally arranged at the side of the front end portion of the catheter 1. The aperture of the urine inlet hole 3 can be controlled to be 3-8 mm according to the thickness of the catheter 1. The gasbag 2 is connected with outside air supply through gas passage 4, and pipe 1 and the split type setting of gas passage 4, gasbag 2 are fixed at the front end of gas passage 4, and gas passage 4 is the body that a diameter is less than 3 apertures of urine inlet hole, and gas passage 4 is located the drainage chamber of pipe 1 and the drainage chamber that pipe 1 was worn out to accessible urine inlet hole 3. A guide wire 5 is disposed in the gas passage 4.

The catheter 1 is provided with a water sac 6, and the water sac 6 is positioned at the front end part of the catheter 1. The water sac 6 is connected with an external water source through a liquid channel 61, and the liquid channel 61 is a cavity on the catheter 1. The liquid channel 61 is arranged in a manner consistent with the prior art. The catheter 1 is provided with a water absorption gasket 9, and the water absorption gasket 9 is an annular ring made of sponge.

The air bag 2 is fixed with a load cell 81, the tail part of the catheter 1 is provided with an electromagnetic valve 82, the load cell 81 is communicated with an external controller, and the controller controls the opening or closing of the electromagnetic valve 82 according to the pressure value measured by the load cell 81. Constant pressure venting is prior art.

The load cell 81 may communicate with an externally located controller by wireless means. In this embodiment, the load cell 81 is in communication with an externally located controller via a transmission line that also serves as a guide wire. The gas channel 4 has a bifurcation outside the catheter 1 where the transmission line is separated from the gas channel 4.

The conduit 1 is provided with a branch tube 11, the mouth of the branch tube 11 is provided with a rubber plug 12 for sealing, the rubber plug 12 is structured as shown in fig. 3, the rubber plug 12 is provided with a passage for the gas passage 4 to pass through, and the gas passage 4 passes through the rubber plug 12. The mouth of the branch tube 11 also has a retaining sleeve 13 against which one end of the rubber stopper 12 abuts. The fixing sleeve 13 is connected with the branch pipe 11 through threads.

As shown in fig. 2, the outer surface of the balloon 2 is provided with a urethral catheterization groove 7, and the outer surface of the gas passage 4 is also provided with a urethral catheterization groove 7.

Claims

1. The utility model provides a catheter, includes pipe (1) and gasbag (2), and the front end portion of pipe (1) is provided with into urine hole (3), and gasbag (2) are connected its characterized in that through gas channel (4) and outside air supply: the catheter (1) is positioned outside the prostate, so that urine can flow through the prostate before entering the catheter (1), and the catheter (1) and the gas channel (4) are arranged in a split mode, so that the gas channel (4) can be driven to shake in the catheter (1) by the shaking energy of the air bag (2); the air bag (2) is fixed at the front end part of the air channel (4), when the air bag is used, the air bag (2) is positioned in the bladder, and when the bladder is filled with urine, the air bag (2) floats in the urine; the gas channel (4) is a tube body with the diameter smaller than the aperture of the urine inlet hole (3), and the gas channel (4) is positioned in the drainage cavity of the catheter (1) and can penetrate out of the drainage cavity of the catheter (1) through the urine inlet hole (3); a branch pipe (11) is arranged on the conduit (1), a fixed sleeve (13) and a rubber plug (12) for sealing are arranged at the opening part of the branch pipe (11), one end of the rubber plug (12) is propped against the fixed sleeve (13), and the gas channel (4) penetrates through the rubber plug (12); the catheter (1) is provided with a water absorption gasket (9), and when the catheter (1) is inserted into the urethra, the water absorption gasket (9) is positioned at the urethral orifice.

2. A urinary catheter according to claim 1, wherein: the gas channel (4) is provided with a guide wire (5).

3. A urinary catheter according to claim 1, wherein: the catheter (1) is provided with a water bag (6), and the water bag (6) is connected with an external water source through a liquid channel (61).

4. A catheter according to claim 3 wherein: the liquid channel (61) is a cavity on the catheter (1).

5. A urinary catheter according to claim 1, wherein: a urethral catheterization groove (7) is formed in the outer surface of the air bag (2), and a urethral catheterization groove (7) is also formed in the outer surface of the air channel (4).

6. A urinary catheter according to claim 1, wherein: the air bag (2) is fixed with a load cell (81), the tail part of the catheter (1) is provided with an electromagnetic valve (82), the load cell (81) is communicated with an external controller, and the controller controls the opening or closing of the electromagnetic valve (82) according to the pressure value measured by the load cell (81).

7. A urinary catheter according to claim 2, wherein: the balloon (2) is fixed with a load cell (81), the tail of the catheter (1) is provided with an electromagnetic valve (82), the load cell (81) is communicated with an external controller through a transmission line, the transmission line is a guide wire (5), and the controller controls the opening or closing of the electromagnetic valve (82) according to a pressure value measured by the load cell (81).