A new anti-leakage and anti-reflux urinary catheter

Abstract

The utility model belongs to the technical field of catheter, especially a new type of leakage-proof urine anti-reflux catheter. The technology includes the catheter which is vertically arranged, the first urine inlet which is internally and externally communicated is arranged on the upper end of the catheter, the main balloon is installed on the upper half part of the catheter, the partition is vertically arranged in the catheter, the partition divides the internal space of the catheter into the first channel and the second channel, the lower end of the catheter is installed with the branch pipe which is communicated with the two channels respectively, the second urine inlet which is communicated with the second channel is arranged on the lower half part of the catheter, the plugging assembly for plugging the external orifice of urethra is arranged on the catheter below the second urine inlet. In the utility model, most of the urine in the bladder enters the first channel through the first urine inlet, the external orifice of urethra is closed under the action of the plugging assembly, a small part of the urine flowing into the urethra enters the second channel through the second urine inlet, the overflowed urine is collected back into the catheter, and the overflow of the urine is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of urinary catheter technology, and in particular relates to a novel urinary catheter that prevents leakage and reflux. Background Technology

[0002] A urinary catheter is a common medical device that can be inserted into the bladder through the urethra to drain urine. A urinary catheter consists of a catheter and a connector. Indwelling catheterization is a method of inserting a urinary catheter into the bladder under strict aseptic conditions, allowing urine to flow out of the body through the catheter medium. During indwelling catheterization, phenomena such as urine leakage, pain, catheter dislodgement, and urine reflux often occur, causing the patient's buttocks to be soaked with urine, resulting in complications such as incontinence dermatitis, urinary tract infection, and pressure sores, which affect the quality of nursing care.

[0003] Currently, the main factors causing urine leakage during catheter use are generally improper catheter selection. Incorrect catheter size can lead to excessive gaps between the catheter and the urethral orifice, resulting in leakage. Another cause is incorrect inflation of the catheter balloon; insufficient inflation results in an irregularly shaped balloon that cannot maintain its shape and cannot completely cover the urethral orifice, leaving the bladder neck open and causing leakage. All of these situations arise because the balloon does not fit tightly against the urethral orifice, allowing urine to flow through the gaps and cause leakage. Utility Model Content

[0004] The purpose of this invention is to provide a novel anti-leakage and anti-reflux urinary catheter with a simple structure that recirculates urine flowing into the urethra back into the catheter, thus preventing leakage.

[0005] The novel anti-leakage and anti-reflux urinary catheter includes a vertically arranged catheter with a first inlet at the upper end that communicates with both the inside and outside of the catheter. A main balloon is installed in the upper half of the catheter. A partition is vertically arranged inside the catheter, dividing the internal space of the catheter into a first channel and a second channel. A branch tube communicating with the two channels is installed at the lower end of the catheter. A second inlet communicating with the second channel is opened in the lower half of the catheter. A sealing component for sealing the external urethral orifice is provided on the catheter below the second inlet.

[0006] Furthermore, the sealing component includes a stop block, which has a frustum structure that is smaller at the top and larger at the bottom. A through hole for the catheter to pass through is provided in the middle of the stop block, and a fixing component is provided at the lower end of the stop block to fix the stop block to the side wall of the catheter.

[0007] Furthermore, the fixing assembly includes at least three extension plates, the upper ends of which are fixed to the lower ends of the stop block, and rubber bands are fitted on the outer sides of the extension plates.

[0008] Furthermore, the outer wall of the block is wrapped with absorbent cotton.

[0009] Furthermore, a secondary balloon is installed on the catheter at the bottom of the main balloon.

[0010] Furthermore, the lower end of the catheter is equipped with a first air inlet tube for inflating the main balloon, and the lower end of the catheter is equipped with a second air inlet tube for inflating the auxiliary balloon.

[0011] Compared with the prior art, the present invention has the following beneficial effects: In this invention, a urinary catheter is inserted into the bladder, and the main balloon secures the catheter within the bladder. Most of the urine in the bladder enters the first channel through the first inlet and is finally discharged from the catheter. Under the action of the sealing component, the external urethral orifice is sealed. The second inlet is inserted into the urethra along with the catheter, located between the internal and external urethral orifices. A small portion of the urine flowing into the urethra enters the second channel through the second inlet and is finally discharged to the outside. With the cooperation of the second inlet and the sealing component, the overflowing urine is drawn back into the catheter, preventing urine leakage. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Front view; Figure 3 for Figure 1 A magnified view of a section at point A in the middle; The components in the diagram are named as follows: 1. First urinary inlet; 2. Urinary catheter; 3. Main balloon; 4. Secondary balloon; 5. Second air inlet tube; 6. First air inlet tube; 7. First channel; 8. Valve; 9. Branch tube; 10. Second channel; 11. Partition; 12. Second urinary inlet; 13. Stop; 14. Absorbent cotton; 15. Rubber band; 16. Extension plate. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention. Example

[0014] This embodiment describes a novel anti-leakage and anti-reflux urinary catheter, such as... Figures 1 to 3 As shown, it includes a vertically arranged urinary catheter 2, with a first urinary inlet 1 at the upper end of the urinary catheter 2 that communicates with the inside and outside. The first urinary inlet 1 is located at the upper end of the urinary catheter 2. After the upper end of the urinary catheter 2 is inserted into the bladder, urine enters the urinary catheter 2 through the first urinary inlet 1. The upper part of the urinary catheter 2 is equipped with a main balloon 3. The main balloon 3 is installed in the upper part of the urinary catheter 2. After the main balloon 3 is inserted into the bladder, the inflated main balloon 3 expands and locks the bladder opening of the patient, preventing the urinary catheter 2 from falling out and preventing urine from leaking out. A partition 11 is vertically installed inside the urinary catheter 2. The partition 11 divides the internal space of the urinary catheter 2 into a first channel 7 and a second channel 10. The partition 11 is installed in the lower half of the urinary catheter 2 and divides the internal space of the urinary catheter 2 into two channels. The first channel 7 is the main channel and is used to drain urine from the bladder. The second channel 10 is the secondary channel and is used to drain a small amount of urine that overflows from the bladder. The two independent channels can prevent the backflow of urine in the second channel 10 and avoid bladder infection. The lower end of the urinary catheter 2 is equipped with two branch tubes 9 that are connected to two channels respectively. There are two branch tubes 9. The upper end of the left branch tube 9 is connected to the lower end of the urinary catheter 2 and is connected to the first channel 7. The upper end of the right branch tube 9 is connected to the lower end of the urinary catheter 2 and is connected to the second channel 10. The lower ends of the two branch tubes 9 are respectively connected to urine bags to collect urine in the bladder. The lower half of the catheter 2 is provided with a second urine inlet 12 that communicates with the second channel 10. After the catheter 2 is inserted into the urethra, the second urine inlet 12 is located between the external urethral opening and the internal urethral opening. When a small amount of urine overflows from the internal urethral opening and flows through the second urine inlet 12, it re-enters the second channel 10 through the second urine inlet 12, thus preventing urine from overflowing through the external urethral opening. A stop 13 is fitted onto the outer side of the urinary catheter 2. The stop 13 has a frustum-shaped structure, wider at the bottom and narrower at the top. A through hole for the urinary catheter 2 to pass through is located in the center of the stop 13. The stop 13 has a sleeve-like structure and is fitted onto the urinary catheter 2 below the second inlet 12. It slides up and down along the length of the urinary catheter 2. The position of the stop 13 is adjusted according to the patient's urethral opening to ensure that the urethral opening is sealed and to prevent urine leakage. At least three extension plates are fixed to the lower end of the stop 13. The extension plate 16 is attached to the outer wall of the catheter 2. An elastic band 15 is fitted around the outer side of the extension plate 16, and tightening the elastic band 15 presses the extension plate 16 firmly onto the catheter 2. This entire assembly constitutes a fixing component for securing the stop block 13 to the side wall of the catheter 2. Specifically, the extension plate 16 adopts an arc-shaped structure, which allows for a closer fit to the catheter 2 and better supports the stop block 13. The fixation effect is better; this paragraph as a whole constitutes a sealing component for sealing the external urethral orifice. When using the sealing component, after the catheter 2 is inserted into the bladder, after the second inlet 12 is fully inserted into the urethra along with the catheter 2, the stop block 13 is moved to the external urethral orifice. The smaller diameter end of the stop block 13 is inserted into the external urethral orifice. The inclined outer wall of the stop block 13 can ensure that the external urethral orifice is sealed to prevent urine leakage. After the position of the stop block 13 is determined, the stop block 13 is fixed to the catheter 2 by the fixing component to prevent the stop block 13 from sliding along the catheter. Of course, in the sealing component, the stop block 13 is made of elastic solid silicone rubber. Elastic solid silicone rubber is a medical silicone that is non-irritating, non-toxic, and non-allergenic to human tissues. It has very little rejection reaction in the body and has good biocompatibility. It can maintain its original elasticity and softness during contact with body fluids and tissues and is not degraded. It is a very stable inert material.

[0015] In this embodiment, the upper end of the catheter 2 is inserted into the bladder through the urethra. After the main balloon 3 is inflated, it locks the bladder opening to prevent the catheter 2 from falling out. Most of the urine in the bladder enters the first channel 7 of the catheter 2 through the first inlet 1 and then drains through the lower end of the catheter 2. The external urethral opening is completely blocked by the sealing component. The second inlet 12 follows the movement of the catheter 2 and is inserted into the urethra, located between the external and internal urethral openings. A small amount of urine flows into the urethra through the gap between the main balloon 3 and the internal urethral opening. With the external urethral opening blocked, a small amount of urine re-enters the second channel 10 through the second inlet 12 and drains through the lower end of the second channel 10. With the cooperation of the second inlet 12 and the sealing component, a small amount of overflowing urine is collected back into the catheter 2 to prevent urine overflow. The two independent channels can prevent urine reflux. Example

[0016] This embodiment further illustrates the technology, such as Figure 1 and Figure 2 As shown, the outer wall of the baffle 13 is wrapped with absorbent cotton 14. The absorbent cotton 14 is wrapped around the outside of the baffle 13. When a very small amount of urine overflows through the gap between the baffle 13 and the urethral opening, the absorbent cotton 14 absorbs the overflowing urine. The absorbent cotton 14 is a prior art material. The absorbent cotton is mainly made of polymer materials such as polyester, polyurethane, polyamide, and polypropylene. At the same time, absorbent resin and adsorbent resin are added to enhance its water absorption performance. The absorbent cotton has strong water absorption performance, can quickly absorb and lock in moisture, reduce backflow, keep the surface dry, and also has good breathability and comfort. It can quickly remove sweat and moisture. The absorbent cotton 14 is often used as an absorbent material in feminine hygiene products. Example

[0017] This embodiment further illustrates the technology, such as Figure 1 As shown, a secondary balloon 4 is installed on the catheter 2 at the bottom of the main balloon 3. The secondary balloon 4 has a smaller diameter than the main balloon 3 and is located below the main balloon 3. The secondary balloon 4 is used to improve the sealing effect on the internal urethral orifice. After the main balloon 3 is inflated, its diameter is large and it cannot cover the internal urethral orifice well due to the obstruction of the bladder wall. By using the smaller diameter secondary balloon 4, the interference of the bladder wall is avoided, the internal urethral orifice is better covered, and urine leakage is reduced. Example

[0018] This embodiment further illustrates the technology, such as Figure 1 As shown, the lower end of the catheter 2 is equipped with a first air inlet tube 6 for inflating the main balloon 3, and the lower end of the catheter 2 is equipped with a second air inlet tube 5 for inflating the auxiliary balloon 4. The expansion of the two balloons is controlled by the two air inlet tubes, and the air inlet ends of the two air inlet tubes are equipped with valves 8 for controlling their opening and closing.

Claims

1. A novel anti-leakage and anti-reflux urinary catheter, comprising a vertically arranged urinary catheter (2), the upper end of which has a first inlet (1) communicating with the inside and outside, and a main balloon (3) installed in the upper half of the urinary catheter (2), characterized in that: The catheter (2) is vertically equipped with a partition (11), which divides the internal space of the catheter (2) into a first channel (7) and a second channel (10). The lower end of the catheter (2) is equipped with a branch tube (9) that communicates with the two channels respectively. The lower half of the catheter (2) is provided with a second urine inlet (12) that communicates with the second channel (10). A sealing component for sealing the external urethral opening is provided on the catheter (2) below the second urine inlet (12).

2. The novel anti-leakage and anti-reflux catheter according to claim 1, characterized in that: The sealing component includes a block (13), which has a frustum structure with a smaller top and a larger bottom. A through hole for the catheter (2) to pass through is provided in the middle of the block (13), and a fixing component is provided at the lower end of the block (13) to fix the block (13) to the side wall of the catheter (2).

3. The novel anti-leakage and anti-reflux catheter according to claim 2, characterized in that: The fixing assembly includes at least three extension plates (16), the upper end of which is fixed to the lower end of the stop (13), and rubber bands (15) are fitted on the outside of the extension plates (16).

4. The novel anti-leakage and anti-reflux catheter according to claim 2, characterized in that: The outer wall of the block (13) is wrapped with absorbent cotton (14).

5. The novel anti-leakage and anti-reflux catheter according to claim 1, characterized in that: A secondary balloon (4) is installed on the catheter (2) at the bottom of the main balloon (3).

6. The novel anti-leakage and anti-reflux catheter according to claim 5, characterized in that: The lower end of the catheter (2) is equipped with a first air inlet tube (6) for inflating the main balloon (3), and the lower end of the catheter (2) is equipped with a second air inlet tube (5) for inflating the auxiliary balloon (4).

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