KR20200007243A - Urological Catheter - Google Patents

Abstract

The present invention relates to a urinary tract catheter capable of reducing patient′s pain. According to the present invention, the urinary tract catheter comprises: a hollow liquid discharge tube (10) having a urine discharge passage formed in a central part to discharge urine, and formed in a double-tube structure; a plurality of urine inlets (11) penetrating an end part of the liquid discharge tube (10) entering a bladder to introduce the urine into the liquid discharge tube (10); a urine outlet (13) disposed on an opposite side to the urine inlet to discharge the urine, which is introduced through the urine inlet (11), through the liquid discharge tube (10); a fluid injection hole (14) disposed on a tip part of one catheter unit of the urine outlet (13) to inject fluid through a fluid passage formed on the outer circumferential surface of the double-tube structured liquid discharge tube; and a balloon (30) disposed on the outer circumference of an end of the liquid discharge tube to be expanded by the injection pressure of the fluid injected through the fluid injection hole (14)in order to prevent the end part of the liquid discharge tube (10) disposed in the bladder from going out to a urinary tract. Moreover, a burst inducement part (35) is formed on the outer circumference of the balloon (30) or a contact part between the balloon (30) and the liquid discharge tube (10) to release an expanded state of the balloon when the fluid is discharged while the balloon, which is expanded by the pressure in accordance with contact pressure generated by contact with the urine outlet (40) or fluid movement inside the balloon, bursts in the case that an external force forcibly pulling the catheter from the outside of a body is applied while the balloon (30) is expanded.

Description

Urinary Catheter

The present invention relates to a urinary catheter, and more particularly, a balloon that bulges in a spherical shape at the distal end of the urinary catheter inserted into the bladder and prevents the catheter from being arbitrarily removed from the bladder by an external force. It relates to a urinary catheter that is capable of bursting to prevent injuries or lacerations caused by bulging balloons exiting the urinary tract.

In general, the catheter refers to a thin tube used for discharging or evaluating the contents of an internal body cavity (pleural cavity, peritoneal cavity), digestive tract, or bladder.

The catheter is different in shape and thickness depending on the purpose of use, and urinary catheter is widely used to discharge urine in the bladder, to clean the inside of the bladder, to inject medicine into the bladder, and the like.

One embodiment of such a urinary catheter is shown in FIG. 1.

The urinary catheter C according to the conventional embodiment shown in FIG. 1 is provided with a hollow drainage tube 10 having a predetermined length for discharging urine and a distal end of the drainage tube 10 to enter the bladder. And a plurality of urine inlets 11 formed therethrough so that urine can pass into the drain tube 10, and a distal end portion of the catheter unit 15 provided at the other end of the drain tube 10 opposite to the urine inlet 11. The urine discharge port 13 provided, the urine discharge port 13 provided in the distal end of the catheter unit 15 and the fluid inlet configured to inject the fluid into the outer periphery of the drain tube 10 of the double pipe structure (14) and a balloon (balloon) is provided so that the fluid injected through the fluid inlet 14 is inflated into a spherical shape of a predetermined size near the distal end of the drain tube (10).

In the conventional urinary catheter (C) configured as described above, one drainage tube 10 has a double tube structure and is configured to discharge urine of the bladder through a urine discharge path formed at the inner center thereof, and the distal end of the drainage tube located inside the bladder is bladder. The balloon 12 provided near the distal end of the drainage tube 10 is swollen into a spherical shape having a predetermined size according to the injection amount of the fluid injected through the fluid inlet 14 so as not to easily fall out to the outside of FIG. 1. As shown in the enlarged view, the balloon swells at the distal end of the drain tube, which is placed inside the bladder, to prevent the drain tube 10 from being randomly pulled out of the bladder.

A conventional urinary catheter (C) used as shown in Figure 2 is a bulging balloon inside the bladder of the patient is located in the urine inlet through the urine inlet provided at the distal end of the drain tube into the drain tube (20) ) To collect urine.

Since the urinary catheter is usually operated under anesthesia, the urinary catheter is maintained through the patient's urethra into the bladder, so when the urinary catheter is installed, the pain is not felt, but the anesthesia is released and the patient is inserted into the bladder. You feel a lot of foreign body.

Thus, patients often consciously or unknowingly forcibly pull out the urinary catheter installed into their urethra and bladder.

At this time, the balloon 12 expanded to a predetermined size inside the bladder B is caught by the drainage tube 10 that is pulled outward or is forced out of the bladder while being in close contact with the inner wall of the urethra while expanding the bladder inlet. As you come out, the inner wall of the patient's urethra may cause abrasions or lacerations, and the wound causes severe pain, and the patient must endure severe pain.

On the other hand, the urinary catheter is forcibly removed and bleeding occurs in the urethra of the patient damaged by abrasions or lacerations, resulting in hematuria during urination and contact with urine from the wound, causing a lot of soreness. After you remove the pain caused by urination is felt badly to hold the urine for as long as possible.

However, the bladder swells as patients hold their urine for a long time, and the bladder that hasn't discharged for a long time can expand more and more severely, leading to bladder asthma, which causes another disease. It is often occurring.

Therefore, when patients using urinary catheter forcefully withdraw the urinary catheter consciously or unconsciously, the patient's urethra is damaged by a balloon that is inflated inside the bladder, causing another disease, There is a need to devise ways to reduce the inconvenience of doubling pain.

-Korean Patent Registration No. 10-0992872 (Registration Date: Nov. 2, 2010, Name of Invention: Urethral Catheter) -Korea Patent Registration No. 10-1730426 (Registration Date: April 20, 2017, Title of the invention: Urine catheter with a stopper)

The present invention has been made to solve the problems of the conventional balloon urinary catheter described above, when the patient wearing the urinary catheter is forcibly pulled out of the urinary catheter is inflated inside the bladder by the pulling force or pressure When a certain pressure is applied to the balloon, the balloon bursts automatically and the fluid filled inside the balloon escapes, reducing the volume of the balloon, making it easier for the urinary catheter to be pulled out through the urinary tract. It is an object of the present invention to provide a urinary catheter that can solve the conventional problems that have been made.

In order to achieve the above object, the urinary tract catheter according to the present invention comprises a hollow drainage tube having a double tube structure in which a urine discharge path for discharging urine is formed in the center; A urine inlet formed with a plurality of penetrating portions at the distal end of the drainage tube that enters the bladder to allow urine to flow into the drainage tube; A urine outlet provided at the distal end of the catheter unit provided on the opposite side of the urine inlet to discharge urine introduced into the urine inlet through a drainage tube; A fluid inlet provided at a distal end of the catheter unit to be disposed in a y-shape with the urine discharge port to enter a fluid through a fluid passage formed at an outer circumference of a drainage pipe of a double pipe structure; Balloons are provided on the outer periphery of the distal end of the drainage tube to prevent the distal end of the drainage tube located inside the bladder is expanded by the entry pressure of the fluid injected through the fluid inlet to fall into the urethra; In this expanded state, the fluid filled inside the balloon as the balloon expands due to contact pressure or fluid movement pressure inside the balloon, which is generated when the balloon contacts the bladder inlet under constant force or pressure pulling the catheter from outside the bladder. It is configured so that the burst leading portion is formed between the outer peripheral edge of the balloon or the connection portion of the balloon and the drainage pipe so that the balloon is released to release the expanded state.

In particular, the burst guide portion is made of a configuration that is provided with one or more orthogonal or radial with respect to the tensile force action direction of the drainage tube to be drawn.

In addition, the burst induction portion may be formed thinner than the thickness of the cross-section of the surrounding balloon, or the material of the left and right balloons may be composed of the joint portion of the dissimilar material (다른) having different elasticity.

The urinary catheter according to the present invention is a balloon which prevents the catheter from falling out while being located inside the bladder when the patient consciously or unconsciously pulls the catheter in a state in which the catheter is attracted to the bladder of the patient and the balloon is inflated. If a certain amount of pressure is applied to the inlet of the bladder and the urinary tract contracts as the inflated balloon is expelled as the burst-inducing part provided between the outer peripheral side of the inflated balloon or the connection portion of the balloon and the drainage pipe bursts, the fluid filled in the balloon is released. By exiting through to minimize the patient's urethral damage to reduce the patient's pain.

In addition, even if the urinary catheter is forcibly removed, damage to the urethra is minimized, thereby reducing the pain generated during urination, thereby minimizing the occurrence of bladder asiasis and additional diseases caused by holding urine.

1 is an enlarged view of one embodiment and a balloon portion of a conventional urinary catheter,
2 is a state in which the tip of the conventional urinary catheter is located inside the bladder and the balloon is inflated,
3 is an enlarged view of an expanded balloon portion and an expanded balloon portion in a urinary catheter according to an embodiment of the present invention;
4 is a vertical cross-sectional view taken along the line AA of FIG.
5 is a state in which the burst guide portion of the expanded balloon when the drainage tube is pulled after attracting the catheter tip to the inside of the patient's bladder using the urinary catheter according to an embodiment of the present invention,
6 is a state in which the fluid is discharged while the induction part bursts by the external force applied to the bladder inlet side of the expanded puncture of Figure 5,
7 is a state in which the burst induction portion of the expanded balloon when the catheter is pulled in a state in which the balloon of the distal end of the catheter is inflated while the urinary catheter is attracted into the bladder of the patient according to another embodiment of the present invention;
FIG. 8 is a state diagram in which the fluid is discharged while the induction part bursts due to an external force applied to the bladder inlet by the expanded balloon of FIG. 6.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

On the other hand, in the detailed description of the present invention, the basic configuration, structure, and the like of a commonly known urinary catheter will be omitted, and detailed description will be given based on the features of the present invention.

3 is a partial configuration of the urinary catheter (C ′) according to an embodiment of the present invention, the balloon 30 is provided in the distal end of the drain tube 10 of the inflated sphere and the expanded balloon 30 The enlarged state is shown.

The urinary catheter C ′ according to an embodiment of the present invention illustrated in FIG. 3 has a structure in which a rupture guide portion 35 is formed in a circumferential shape at one outer periphery of a balloon bulging in a spherical shape. Equipped.

The burst guide portion 35, which is a feature of the present invention, is fixed to the outer periphery of the drainage tube near the distal end of the drainage tube 10 so as to swell by the injection amount and the injection pressure of the fluid injected through the fluid injection port provided at the distal end of the urinary catheter. The fluid filled in the inflated balloon is torn by acting as a guide to tear the balloon 30 formed in the length-formed balloon 30 to be swelled to a predetermined size by the amount of fluid or the fluid injection pressure to be inflated above a prescribed size. It serves as a guide to allow the balloon to contract while being discharged to the outside of the balloon through the induction part.

Although the burst induction part 35 formed in the balloon 30 of the illustrated embodiment is formed in the circumferential direction at right angles to the installation direction of the drainage pipe 10, the formation direction or position of the burst induction part 35 is the inner side of the bladder. Depending on the position of the pressure applied to the inlet, the installation location may be changed, and in particular, the balloon itself may be formed, but may be configured so that the burst leading portion is located at the boundary where the balloon and the drain pipe meet.

The position and direction of the burst induction part 35 may be variously modified according to the flow characteristics or material characteristics of the balloon 30 flowing in the bladder elastically.

4 is a vertical cross-sectional view of the central portion of the balloon 30 is provided in the distal end of the drain tube 10 in the urinary catheter (C ') shown in FIG.

The burst induction part formed on one side of the balloon is formed in a sheath shape so that the burst induction part is more susceptible to pressure than other parts due to the characteristics of the balloon made of an elastic material. When the fluid is flowed by the tension force pulling the catheter, when the pressure is applied to the inner wall of the balloon, the induction portion formed with a relatively thin cross-sectional thickness may be torn and the fluid may be discharged so that the balloon shrinks.

In FIG. 5, the urinary catheter C ′ according to the embodiment of the present invention is attracted to the bladder B of the patient to force the drainage tube 10 drawn out of the bladder in the expanded state of the balloon 30. The pulling state is shown briefly.

As shown in FIG. 5, when the catheter is forcibly pulled from the outside of the body while the urinary catheter C ′ is attracted to the patient's bladder, the drainage tube moves toward the bladder inlet and is near the distal end of the drainage tube 10. While the balloon 30 is also inflated together, one side of the balloon comes into contact with the urinary inlet smaller than the diameter of the balloon, that is, the urine outlet 40 of the bladder.

When the force (F) pulling the drainage tube out of the bladder is applied, the external fluid is applied to the outer surface of the balloon caught in the urine outlet 40, and the fluid filled inside the balloon is opposite to the pulling force (F) of the drainage tube. As the reaction force (F ') acts to apply the pressure to the inner wall of the balloon located on the opposite side of the urine outlet 40 while providing an effect that the balloon is expanded in the direction opposite to the tensile force of the drainage tube.

As such, when the catheter is forcibly pulled consciously or unconsciously from the outside of the body (F direction), a balloon that is expanded to a certain size while being located inside the bladder is caught by the inlet of the urethra, that is, the urine outlet 40 of the bladder, and thus the frictional resistance force. Is generated and the stretching force is generated on the outer surface of the balloon in the circumferential direction in contact with the urine outlet 40 while the fluid inside the balloon moves in the direction opposite to the direction in which the drainage tube 10 is pulled (F direction) (F ′). As a result, as the tear induction part 35 formed with a relatively thin sheath or cross-sectional thickness is torn, the expanded balloon bursts as shown in FIG. 6, and the fluid filled inside the balloon is leaked, and the balloon is contracted. The distal end of the drainage tube 10 caught by the urine outlet 40 naturally escapes through the urethra, thereby not damaging the inner wall of the urethra.

In addition, FIG. 7 schematically illustrates a state of use of another embodiment of the urinary catheter in which the burst induction part 35 is formed at a position different from the above-described embodiment of the present invention.

That is, the urinary catheter according to another embodiment of the present invention moves the fluid inside the balloon by a pulling force (F) when the inflatable balloon is forced to pull the drainage tube from the outside of the bladder by the injection of the fluid into the bladder. When a pressing force F ′ is applied to press the inner circumferential surface of the balloon, a burst induction portion is formed at the connection portion of the drainage pipe and the end of the balloon or the outer circumferential surface of the drainage pipe, which is extended by the pressing force F ′, and bursts at the rear end of the balloon. As the guide part is torn, the fluid inside the balloon is discharged.

That is, the end of the balloon is bonded to the outer periphery of the distal end of the drainage pipe having a double pipe structure so that a predetermined fluid access passage is provided on the outer circumferential surface of the drainage pipe, and the discharge of the fluid is blocked, thereby expanding to a predetermined volume by the injection pressure of the fluid. .

Accordingly, the balloon is inflated by forming a sheath shape or a relatively thin cross-section thickness inducing section 35 at the end portion of the balloon or the end portion of the balloon to which the balloon is inflated by the injection pressure of the fluid to the outer circumference of the drain tube. When a certain pressure is applied in the state, the burst induction part 35 having a weaker strength or adhesive strength than other parts is torn, and the fluid filled in the balloon is naturally discharged.

The burst-inducing part of the balloon, which is a feature of the present invention described above, is not easily ruptured in the process of being expanded to a spherical shape by making the thickness of the cross section relatively thinner, lowering the contact strength or forming a fine sheath than other parts around the periphery, but pulling the drainage tube. When the external force of the side is applied to the balloon outer surface by the external force in the direction, it is made of a structure or shape that can be easily broken.

In addition, the material of the left and right balloons based on the burst induction part is composed of different dissimilar materials (異種 材) based on the burst induction part and the expansion rate is different, so that the fluid inside the bee is moved by the external force of the drainage pipe to the balloon inner wall. When the pressure is applied, due to the difference in elongation between different dissimilar materials may be configured so that the burst guide portion can easily burst.

In the above detailed description of the present invention, the present invention has been described with reference to some embodiments of the burst induction part configured between the balloon or the balloon and the drainage tube, but various modifications may be made by those skilled in the art within the scope of the technical idea of the present invention.

10: drainage tube 11: urine inlet
12, 30: balloon 13: urine outlet
14 fluid inlet 15 catheter unit
20: small variable collection
35: burst induction part 40: urine outlet
50: urethra
B: Bladder C, C ′: Urinary catheter

Claims (3)

A hollow drainage tube 10 having a urine discharge path for discharging urine formed in a central portion thereof and having a double tube structure; A urine inlet (11) formed with a plurality of penetrating ends of the drainage tube (10) to enter the bladder so that urine flows into the drainage tube (10); A urine outlet 13 provided on the opposite side of the urine inlet 11 so that urine introduced into the urine inlet 11 is discharged through the drainage tube 10; A fluid inlet 14 provided at the front end of the catheter unit on one side of the urine discharge port 13 to enter the fluid through the fluid passage formed at the outer circumference of the drainage pipe of the double pipe structure; A balloon (balloon, 30) provided at the end outer periphery of the drainage tube to swell by the injection pressure of the fluid injected into the fluid inlet 14 so that the distal end of the drainage tube 10 located inside the bladder does not exit the urethra; Including,
When an external force that pulls the catheter from the outside of the body when the balloon 30 is inflated, the balloon is expanded by the contact pressure generated while contacting the urine outlet 40 or the pressing force due to fluid movement inside the balloon. The urinary catheter, characterized in that the burst leading portion 35 is formed on the outer periphery of the balloon 30 or the connection portion of the balloon 30 and the drainage tube 10 so that the fluid is discharged to release the expanded state of the balloon. The method of claim 1,
The burst induction part 35 is a urinary catheter, characterized in that consisting of one or more provided in a direction perpendicular or radial with respect to the direction of action of the pulling force pulling the drainage pipe. The method according to claim 1 or 2,
The burst guide portion 35 is formed of a thinner than the thickness of the cross-section of the surrounding balloon, or the material of the left and right balloon is a urinary catheter, characterized in that composed of the joint portion of the dissimilar material (다른) having different elasticity.

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