Automatic anti-leakage flushing catheter

Abstract

The present invention provides an automatic urine leakage prevention flushing catheter, comprising: a catheter body, a balloon part with dual urine leakage prevention and anti-displacement functions, and a water injection end, a bladder flushing end and a urination end arranged at the tail end of the catheter body. The balloon part is composed of a first balloon arranged at the inner opening of the urethra and a second balloon with the function of automatically absorbing leaked urine, both of which are arranged on the tube wall of the catheter body. The water injection end is connected to the first balloon to inject water into the first balloon. The head end of the catheter body is provided with a urine catheter hole, which is connected to the bladder flushing end and the urination end through a channel 1, and is used for flushing the bladder and urinating respectively. The first balloon is arranged between the urine catheter hole and the second balloon. The present invention has the functions of automatically absorbing leaked urine, blocking the urethra and the urethra entrance, and dual urine leakage prevention and anti-displacement.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an automatic urine leakage-proof flushing catheter. Background Art

[0002] Catheterization is a routine operation technique that medical staff must master. It refers to the process of inserting a urinary catheter into the bladder through the external urethral opening to drain urine. Commonly used urinary catheters in clinical practice mainly include double-lumen urinary catheters and triple-lumen urinary catheters. The double-lumen urinary catheter includes a main body and a fixed balloon water injection end and a urination end connected to the rear end of the main body. The front wall of the main body is provided with a urination hole connected to the urination end, and a spherical bladder fixed balloon connected to the fixed balloon water injection end; the triple-lumen urinary catheter is based on the double-lumen urinary catheter, and a bladder flushing end connected to the urination hole is added to the rear end of the main body. In clinical application, first connect the urine bag to the urination end, lubricate the main body with liquid paraffin, insert the head end of the main body into the bladder through the external urethral opening, and then fill the bladder fixed balloon with water through the fixed balloon water injection end, and pull the main body back to make the bladder fixed balloon close to the internal urethral opening.

[0003] When the above-mentioned catheter is actually used, male urine leakage often occurs, which not only affects the recording of urine volume and increases the workload of medical staff, but also urine contamination of bed sheets and pants makes it easier for patients to feel embarrassed. In response to the problem of urine leakage, the invention of announcement number CN209033489 U discloses a urine leakage-proof catheter that is easy to flush, in which a truncated cone-shaped urine leakage-proof balloon is set on the main body close to the rear end of the bladder fixed balloon; the invention of announcement number CN 210057103 U discloses a urine leakage-proof catheter, in which an elastic valve that wraps the bladder fixed balloon is set on the main body, and a conical urine leakage-proof balloon is formed around the outer wall of the tube body when the bladder fixed balloon is filled. The above patent mainly adds a urine leakage-proof balloon. The conical urine leakage-proof balloon fits better with the bladder wall around the internal opening of the urethra, and the contact surface between the conical balloon and the bladder mucosa is larger, which has a certain urine leakage-proof function. However, due to the lack of direct force on the contact surface, the pressure of the balloon on the bladder is relatively small. When the anti-leakage balloon moves, urine can still flow to the internal urethra through the gap between the balloon and the bladder folds, causing urine leakage. In addition, when the bladder fixation balloon is overfilled, the head end of the catheter will have a greater stimulation on the bladder wall, which is easy to cause pain to the patient.

[0004] The main reasons for urine leakage during catheterization are as follows: 1. When the bladder is full, its inner wall is smooth, and the bladder fixation balloon fits tightly against the internal urethral opening. When the bladder is empty, the bladder volume shrinks, and the inner wall of the bladder produces radial bladder folds centered on the internal urethral opening. At this time, the bladder fixation balloon will move away from the internal urethral opening, and there will be a gap between the bladder fixation balloon and the bladder wall, causing urine to flow into the internal urethral opening through the fold gap; 2. The bladder fixation balloon is spherical, while the bladder wall near the internal urethral opening in the empty state is funnel-shaped. The contact area between the bladder fixation balloon and the funnel-shaped bladder wall is small, and urine can easily pass through the bladder fixation balloon and the funnel-shaped bladder wall. The urine in the secondary space can be squeezed into the urethra through the internal urethral opening; 4. There are three physiological strictures in the urethra, namely, the internal urethral opening, the narrow part and the external urethral opening. After the urethra passes through the three strictures, there is a gap between the other parts of the urethra and the main body of the urethra. Under the action of the urethral smooth muscle, this gap is smaller. However, in the elderly, comatose, paraplegic, diabetic and other patients, the urethral smooth muscle is relatively relaxed, and the gap between the main body of the urethra and the urethra is larger, so the urine at the internal urethral opening can flow out through this gap. Based on the analysis of the causes of urine leakage, urine leakage can be prevented from the following aspects: 1. Increase the pressure of the balloon on the bladder mucosa at the urethral opening; 2. Increase the contact area between the balloon near the internal urethral opening and the bladder wall at that location; 3. Reduce the gap between the balloon and the urethral opening; 4. Reduce the gap between the catheter and the urethral mucosa. Summary of the invention

[0005] According to the above-mentioned existing urinary catheter, due to the lack of direct force between the contact surface between the balloon and the bladder mucosa, the pressure of the balloon on the bladder is relatively small. When the anti-leakage balloon is active, urine can still flow to the internal urethral opening through the gap between the balloon and the bladder folds, resulting in urine leakage; in addition, when the bladder fixed balloon is overfilled, the head end catheter has a greater stimulation to the bladder wall, which is easy to cause pain to the patient. An automatic anti-leakage flushing catheter is provided. The present invention mainly utilizes the bladder fixed balloon to block the internal urethral opening and the bladder wall near the internal urethral opening at the same time to prevent urine leakage; the absorbent fiber in the second balloon is used to absorb urine through the urine through the urine hole. After absorbing urine, the absorbent fiber expands to gradually increase the diameter of the second balloon. The diameter of the balloon can be automatically adjusted according to the amount of urine leaked until the balloon and the urethra are completely fitted, thereby avoiding urine leakage and preventing displacement in the catheter. At the same time, the catheter is pulled outward, so that the bladder fixed balloon can compress the internal urethral opening and the bladder wall near the internal urethral opening.

[0006] The technical means adopted by the present invention are as follows:

[0007] An automatic urine leakage prevention flushing catheter comprises: a catheter body, a balloon part with dual urine leakage prevention and displacement prevention functions, and a water injection end, a bladder flushing end and a urination end arranged at the tail end of the catheter body. The balloon part is composed of a first balloon arranged at the inner opening of the urethra and a second balloon with the function of automatically absorbing leaked urine, both of which are arranged on the tube wall of the catheter body. The water injection end is connected with the first balloon to inject water into the first balloon. The head end of the catheter body is provided with a urine catheter hole, which is connected with the bladder flushing end and the urination end through a channel 1 arranged in the catheter body, and is used for flushing the bladder and urinating respectively. The first balloon is arranged between the urine catheter hole and the second balloon.

[0008] Furthermore, the first balloon is a bladder fixing balloon, which is connected to the water injection end through a second channel arranged inside the catheter body. After water injection, the first balloon is shaped like a water drop, and blocks the urethral opening and the bladder wall near the urethral opening in the water injection state;

[0009] The first balloon consists of an integrated balloon 1 and a balloon 2 whose inner cavities are connected. Balloon 1 is placed on the side away from the catheter hole, balloon 2 is placed on the side close to the catheter hole, and the head end of channel 2 is located inside balloon 1; balloon 2 and the catheter hole are placed in the bladder, and balloon 1 is placed in the urethra. After water is injected, balloon 2 is tightly attached to the bladder mucosa at the internal opening of the urethra, balloon 1 blocks the internal opening of the urethra, and the internal opening of the urethra is located between balloon 1 and balloon 2 to prevent urine leakage and prevent the catheter from shifting.

[0010] Furthermore, the second balloon has a semicircular or semi-elliptical structure after being filled with water, and the first balloon has a conical structure after being filled with water, and the tapering direction of the conical structure is toward the tail end of the catheter body.

[0011] Furthermore, the tube wall of the catheter body is provided with a conical or cylindrical groove structure in the circumferential direction, the second balloon is placed in the groove structure, and is a cylindrical balloon before absorbing urine; the inner cavity of the second balloon is filled with absorbent fibers; the surface of the second balloon is provided with a urine passage hole connected to the inner cavity thereof;

[0012] The length of the tube wall at the groove structure is 2-5 cm, preferably 3 cm.

[0013] Furthermore, the outer diameter of the tube wall at the conical groove structure gradually decreases toward the tail end of the catheter body, and the thickness of the absorption fiber gradually becomes thicker. The absorption fiber expands after absorbing urine through the urine passage hole, and the second balloon expands accordingly and the diameter gradually increases until the gap between the balloon and the urethra is completely blocked to prevent displacement within the balloon; the expanded second balloon is conical, and the tapering direction is toward the head end of the catheter body.

[0014] Furthermore, a string of balloons connected end to end is provided in the cylindrical groove structure, the inner cavities of each balloon in the string are connected, and each inner cavity is filled with absorbent fibers. The density of the filled absorbent fibers increases step by step, and the leaked urine is automatically absorbed through the urine passage hole. The absorbent fibers in each balloon expand into a spherical or ellipsoidal shape after absorbing urine, thereby blocking the gap between the balloon and the urethra and preventing displacement inside the balloon.

[0015] Furthermore, the maximum capacity of the first balloon is 35 ml and the maximum diameter is 2 cm.

[0016] Furthermore, the maximum expansion diameter of the second balloon is 1.2 cm.

[0017] Furthermore, the number of balloons in the string of balloons is 3-6, and the maximum balloon diameter is 1 cm.

[0018] Furthermore, the first balloon and the second balloon are made of rubber, silicone, polyurethane, polypropylene or polytetrafluoroethylene;

[0019] The outer diameter of the catheter body is 6-22Fr, specifically 6, 8, 10, 12, 14, 16, 18, 20 or 22Fr, preferably 18Fr; the length of the catheter body is 30-40cm, preferably 40cm; the head end of the catheter body is semi-elliptical.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] 1. The automatic urine leakage prevention flushing catheter provided by the present invention can simultaneously block the urethral opening and the bladder wall near the urethral opening to prevent urine leakage.

[0022] 2. The automatic anti-urine leakage flushing catheter provided by the present invention has absorbent fibers that can absorb urine through the urine passage holes on the surface of the cylindrical balloon. After absorbing urine, the diameter of the cylindrical balloon gradually increases, and the diameter of the balloon can be automatically adjusted according to the amount of leaked urine until the balloon and the urethra are completely fitted, thereby preventing urine leakage.

[0023] 3. The automatic anti-urinary leakage flushing catheter provided by the present invention can prevent the urinary catheter from shifting after the absorbent fiber absorbs urine and fills the balloon. At the same time, pulling the urinary catheter outward can make the bladder fixing balloon compress the urethral opening and the bladder wall near the urethral opening.

[0024] In summary, the application of the technical solution of the present invention can solve the problem that in the existing urinary catheter, due to the lack of direct force between the contact surface between the balloon and the bladder mucosa, the pressure of the balloon on the bladder is relatively small. When the leak-proof balloon is active, urine can still flow to the internal orifice of the urethra through the gap between the balloon and the bladder folds, causing urine leakage; in addition, when the bladder fixing balloon is over-filled, the head end of the catheter will have a greater stimulation to the bladder wall, which is easy to cause pain to the patient.

[0025] Based on the above reasons, the present invention can be widely promoted in the fields of medicine and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0027] Figure 1 It is a structural schematic diagram of the present invention.

[0028] Figure 2 It is a schematic diagram of the present invention in working state (bladder fixation balloon is filled).

[0029] Figure 3 It is a schematic diagram of the present invention in working state (the bladder fixation balloon is filled and the cylindrical balloon gradually expands).

[0030] Figure 4 It is a schematic diagram of the present invention in working state (the bladder fixation balloon is filled and the cylindrical balloon is fully expanded).

[0031] In the figure: 1, catheter hole; 2, first balloon; 3, catheter body; 4, second balloon; 5, channel one; 6, bladder flushing end; 7, urination end; 8, water injection end; 9, channel two; 10, balloon one; 11, balloon two. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0035] As shown in the figure, the present invention provides an automatic urine leakage prevention flushing catheter, comprising: a catheter body 3, a balloon portion with dual urine leakage prevention and anti-displacement functions, and a water injection end 8, a bladder flushing end 6 and a urination end 7 arranged at the tail end of the catheter body 3. The balloon portion is composed of a first balloon 2 arranged at the inner opening of the urethra and a second balloon 4 with the function of automatically absorbing leaked urine, both of which are arranged on the tube wall of the catheter body 3. The water injection end 8 is connected to the first balloon 2 to inject water into the first balloon 2; a catheter hole 1 is provided at the head end of the catheter body 3, and the catheter hole 1 is connected to the bladder flushing end 6 and the urination end 7 through a channel 5 arranged in the catheter body 3, and is used for flushing the bladder and urinating respectively; the first balloon 2 is placed between the catheter hole 1 and the second balloon 4.

[0036] As a preferred embodiment, the first balloon 2 is a bladder fixing balloon, which is connected to the water injection end 8 through a second channel 9 provided inside the catheter body 3. After water injection, the first balloon 2 is shaped like a water drop, and blocks the urethral opening and the bladder wall near the urethral opening in the water injection state;

[0037] The first balloon 2 is composed of an integrated balloon 10 and a balloon 11 with connected inner cavities. Balloon 10 is placed on the side away from the catheter hole 1, balloon 2 11 is placed on the side close to the catheter hole 1, and the head end of channel 2 9 is located inside balloon 10; balloon 2 11 and the catheter hole 1 are placed in the bladder, and balloon 10 is placed in the urethra. After water is injected, balloon 2 11 is tightly attached to the bladder mucosa at the inner opening of the urethra, balloon 10 blocks the inner opening of the urethra, and the inner opening of the urethra is located between balloon 10 and balloon 2 11 to prevent urine leakage and prevent the catheter from shifting.

[0038] As a preferred embodiment, the balloon 2 11 has a semicircular or semi-elliptical structure after being filled with water, and the balloon 10 has a conical structure after being filled with water, and the tapering direction of the conical structure is toward the tail end of the catheter body 3.

[0039] As a preferred embodiment, the tube wall of the catheter body 3 is provided with a conical or cylindrical groove structure in the circumferential direction, and the second balloon 4 is placed in the groove structure, and is a cylindrical balloon before absorbing urine; the inner cavity of the second balloon 4 is filled with absorbent fibers; the surface of the second balloon 4 is provided with a urine passage hole connected to its inner cavity;

[0040] The length of the tube wall at the groove structure is 2-5 cm.

[0041] As a preferred embodiment, the outer diameter of the tube wall at the conical groove structure gradually decreases toward the tail end of the catheter body 3, and the thickness of the absorption fiber gradually becomes thicker. The absorption fiber expands after absorbing urine through the urine passage hole, and the second balloon 4 expands accordingly and the diameter gradually increases until the gap between the balloon and the urethra is completely blocked to prevent displacement within the balloon; the expanded second balloon 4 is conical, and the tapering direction is toward the head end of the catheter body 3.

[0042] As a preferred embodiment, a string of balloons connected end to end is provided in the cylindrical groove structure, the inner cavities of each balloon in the string are connected, and each inner cavity is filled with absorbent fibers. The density of the filled absorbent fibers increases step by step, and the urine leaks out and is automatically absorbed through the holes. The absorbent fibers in each balloon expand into a spherical or ellipsoidal shape after absorbing urine, thereby blocking the gap between the balloon and the urethra and preventing displacement inside the balloon.

[0043] As a preferred embodiment, the maximum capacity of the first balloon 2 is 35 ml and the maximum diameter is 2 cm.

[0044] As a preferred embodiment, the maximum expansion diameter of the second balloon 4 is 1.2 cm.

[0045] As a preferred embodiment, the number of balloons in the string of balloons is 3-6, and the maximum balloon diameter is 1 cm.

[0046] As a preferred embodiment, the first balloon 2 and the second balloon 4 are made of rubber, silicone, polyurethane, polypropylene or polytetrafluoroethylene, etc.;

[0047] The outer diameter of the catheter body 3 is 6-22 Fr, specifically 6, 8, 10, 12, 14, 16, 18, 20 or 22 Fr; the length of the catheter body 3 is 30-40 cm; and the head end of the catheter body 3 is semi-elliptical.

[0048] Example 1

[0049] like Figure 1-4As shown, an automatic urine leakage prevention flushing catheter comprises: a catheter body 3, a balloon part with dual urine leakage prevention and displacement prevention functions, and a water injection end 8, a bladder flushing end 6 and a urination end 7 arranged at the tail end of the catheter body 3. The balloon part is composed of a first balloon 2 arranged at the inner opening of the urethra and a second balloon 4 with the function of automatically absorbing leaked urine, both of which are arranged on the tube wall of the catheter body 3. The water injection end 8 is connected to the first balloon 2 to inject water into the first balloon 2. The head end of the catheter body 3 is provided with a urine catheter hole 1, and the urine catheter hole 1 is connected to the bladder flushing end 6 and the urination end 7 arranged in the catheter body 3. Channel 15 is connected with bladder flushing end 6 and urination end 7, and is used for flushing bladder and urination respectively. Specifically, bladder flushing end 6 and urination end 7 are combined into one channel and are connected with urinary catheter hole 1 through channel 15, wherein physiological saline is injected from the single channel set in bladder flushing end 6 and flows into bladder through channel 15 and urinary catheter hole 1 for flushing, and the single channel set in urination end 7 is connected with channel 15 for urination, and urine is discharged through urinary catheter hole 1, channel 15 and the single channel in urination end 7 in sequence; the first balloon 2 is placed between urinary catheter hole 1 and the second balloon 4. The above-mentioned channel 15 is a single channel.

[0050] In this embodiment, the first balloon 2 is a bladder fixed balloon, which is connected to the water injection end 8 through the channel 2 9 arranged inside the catheter body 3. After water injection, the first balloon 2 is in the shape of a water drop, and blocks the urethral opening and the bladder wall near the urethral opening in the water injection state; the first balloon 2 is composed of an integrated balloon 10 and a balloon 2 11 with connected inner cavities, the balloon 10 is placed away from the catheter hole 1, the balloon 2 11 is placed close to the catheter hole 1, and the head end of the channel 2 9 is located inside the balloon 10; the balloon 2 11 and the catheter hole 1 are placed in the bladder, and the balloon 10 is placed in the urethra. After water injection, the balloon 2 11 is close to the bladder mucosa at the urethral opening, and the balloon 10 blocks the urethral opening (the connection between the bladder and the urethra). The urethral opening is located between the balloon 10 and the balloon 2 11 to prevent urine leakage and prevent the catheter from shifting. The maximum capacity of the first balloon 2 is 35ml and the maximum diameter is 2cm.

[0051] In this embodiment, the balloon 2 11 is semicircular after being filled with water, and the balloon 1 10 is conical after being filled with water, and the conical structure gradually shrinks toward the tail end of the catheter body 3.

[0052] In this embodiment, the tube wall of the catheter body 3 is provided with a conical groove structure in the circumferential direction, and the second balloon 4 is placed in the groove structure, and is a cylindrical balloon before absorbing urine; the inner cavity of the second balloon 4 is filled with absorbent fibers; the surface of the second balloon 4 is provided with a urine passage hole connected to its inner cavity; the length of the tube wall at the groove structure is 3 cm.

[0053] In this embodiment, the outer diameter of the tube wall at the conical groove structure gradually decreases toward the tail end of the catheter body 3, and the thickness of the absorbent fiber gradually becomes thicker. The absorbent fiber expands after absorbing urine through the urine passage hole, and the second balloon 4 expands accordingly and gradually increases in diameter until the gap between the balloon and the urethra is completely blocked to prevent displacement in the balloon; the expanded second balloon 4 is conical, and the shrinking direction is toward the head end of the catheter body 3. The maximum expansion diameter of the second balloon 4 is 1.2 cm.

[0054] In this embodiment, the first balloon 2 and the second balloon 4 are both made of silicone; the outer diameter of the catheter body 3 is 18 Fr; the length of the catheter body 3 is 40 cm; and the tip of the catheter body 3 is semi-elliptical.

[0055] The use of the present invention is as follows: wipe the front section of the catheter body with liquid paraffin, insert the catheter body head end completely through the external urethral opening, inject 110 ml of saline through the water injection end of the bladder fixed balloon, and pull the catheter back to make the bladder fixed balloon close to the bladder wall near the internal urethral opening. If urine leaks from the bladder fixed balloon, the absorption fiber can absorb the urine through the urine through hole on the surface of the second balloon. After absorbing the urine, the absorption fiber expands, and the second balloon gradually increases in sequence. The diameter of each balloon section can be automatically adjusted according to the amount of leaked urine until the balloon is completely fitted with the urethra, thereby preventing urine leakage.

[0056] Example 2

[0057] An automatic urine leakage prevention flushing catheter comprises: a catheter body 3, a balloon portion with dual urine leakage prevention and anti-displacement functions, and a water injection end 8, a bladder flushing end 6 and a urination end 7 arranged at the tail end of the catheter body 3. The balloon portion is composed of a first balloon 2 arranged at the inner opening of the urethra and a second balloon 4 with the function of automatically absorbing leaked urine, both of which are arranged on the tube wall of the catheter body 3. The water injection end 8 is connected with the first balloon 2 to inject water into the first balloon 2; a urine catheter hole 1 is arranged at the head end of the catheter body 3, and the urine catheter hole 1 is connected with the bladder flushing end 6 and the urination end 7 through a channel 5, and is used for flushing the bladder and urinating respectively; the first balloon 2 is arranged between the urine catheter hole 1 and the second balloon 4.

[0058] In this embodiment, the first balloon 2 is a bladder fixed balloon, which is connected to the water injection end 8 through the channel 2 9 arranged inside the catheter body 3. After water injection, the first balloon 2 is in the shape of a water drop, and blocks the urethral opening and the bladder wall near the urethral opening in the water injection state; the first balloon 2 is composed of an integrated balloon 10 and a balloon 2 11 with connected inner cavities, the balloon 10 is placed away from the catheter hole 1, the balloon 2 11 is placed close to the catheter hole 1, and the head end of the channel 2 9 is located inside the balloon 10; the balloon 2 11 and the catheter hole 1 are placed in the bladder, and the balloon 10 is placed in the urethra. After water injection, the balloon 2 11 is close to the bladder mucosa at the urethral opening, and the balloon 10 blocks the urethral opening. The urethral opening is located between the balloon 10 and the balloon 2 11 to prevent urine leakage and prevent the catheter from shifting. The maximum capacity of the first balloon 2 is 35ml and the maximum diameter is 2cm.

[0059] In this embodiment, the balloon 2 11 has a semi-elliptical structure after being filled with water, and the balloon 1 10 has a conical structure after being filled with water, and the tapering direction of the conical structure is toward the tail end of the catheter body 3.

[0060] In this embodiment, the tube wall of the catheter body 3 is provided with a cylindrical groove structure in the circumferential direction, and the second balloon 4 is placed in the groove structure, and is a cylindrical balloon before absorbing urine; the inner cavity of the second balloon 4 is filled with absorbent fibers; the surface of the second balloon 4 is provided with a urine passage hole connected to its inner cavity; the length of the tube wall at the groove structure is 2 cm.

[0061] In this embodiment, a string of balloons connected end to end is provided in the cylindrical groove structure, the inner cavities of each balloon in the string are connected, each inner cavity is filled with absorbent fibers, the density of the filled absorbent fibers increases step by step, and the urine leaks out through the urine passage hole. After absorbing urine, the absorbent fibers in each balloon expand into a spherical or elliptical shape, blocking the gap between the balloon and the urethra to prevent displacement in the balloon. There are 4 balloons in the string, and the maximum balloon diameter is 1 cm.

[0062] In this embodiment, the first balloon 2 and the second balloon 4 are both made of rubber; the outer diameter of the catheter body 3 is 12Fr; the length of the catheter body 3 is 30 cm; and the tip of the catheter body 3 is semi-elliptical.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic anti-urine leakage flushing catheter, characterized in that: include: A catheter body (3), a balloon portion with dual urine leakage and displacement prevention functions, and a water injection end (8), a bladder flushing end (6) and a urination end (7) arranged at the tail end of the catheter body (3); the balloon portion is composed of a first balloon (2) arranged at the inner opening of the urethra and a second balloon (4) with the function of automatically absorbing leaked urine, both of which are arranged on the tube wall of the catheter body (3); the water injection end (8) is connected to the first balloon (2) to inject water into the first balloon (2); a urine catheter hole (1) is arranged at the head end of the catheter body (3); the urine catheter hole (1) is connected to the bladder flushing end (6) and the urination end (7) through a channel 1 (5) arranged in the catheter body (3), and is used for urinating the bladder and urinating respectively; the first balloon (2) is arranged between the urine catheter hole (1) and the second balloon (4); the channel 1 (5) is a single channel; The tube wall of the catheter body (3) is provided with a conical or cylindrical groove structure in the circumferential direction, and the second balloon (4) is placed in the groove structure and is a cylindrical balloon before absorbing urine; the inner cavity of the second balloon (4) is filled with absorbent fibers; and the surface of the second balloon (4) is provided with a urine passage hole connected to the inner cavity thereof; The length of the tube wall at the groove structure is 2-5 cm; The absorbent fiber expands after absorbing urine through the urine passage hole, and the second balloon (4) expands accordingly and its diameter gradually increases until the gap between the balloon and the urethra is completely blocked, thereby preventing the balloon from shifting inside. The first balloon (2) is a bladder fixing balloon, which is connected to the water injection end (8) via a second channel (9) arranged inside the catheter body (3). After water injection, the first balloon (2) is shaped like a water drop, and blocks the urethral opening and the bladder wall near the urethral opening in the water injection state; The first balloon (2) is composed of an integrated balloon (10) and a balloon (11) whose inner cavities are connected. The balloon (10) is placed on the side away from the catheter hole (1), and the balloon (11) is placed on the side close to the catheter hole (1). The head end of the second channel (9) is located inside the balloon (10). The balloon (11) and the catheter hole (1) are placed in the bladder, and the balloon (10) is placed in the urethra. After water is injected, the balloon (11) is closely attached to the bladder mucosa at the inner opening of the urethra. The balloon (10) blocks the inner opening of the urethra. The inner opening of the urethra is located between the balloon (10) and the balloon (11), so as to prevent urine leakage and prevent the displacement of the catheter.

2. The automatic urine leakage prevention flushing catheter according to claim 1, characterized in that: The second balloon (11) has a semicircular or semi-elliptical structure after being filled with water, and the first balloon (10) has a conical structure after being filled with water, with the conical structure gradually shrinking in the direction of the tail end of the catheter body (3).

3. The automatic urine leakage prevention flushing catheter according to claim 1, characterized in that: The outer diameter of the tube wall at the conical groove structure gradually decreases towards the tail end of the catheter body (3), and the thickness of the absorption fiber gradually increases; the expanded second balloon (4) is conical, and the direction of gradual contraction is towards the head end of the catheter body (3).

4. The automatic urine leakage prevention flushing catheter according to claim 1, characterized in that: A string of balloons connected end to end is arranged in the cylindrical groove structure, the inner cavities of each balloon in the string are connected, each inner cavity is filled with absorbent fibers, the density of the filled absorbent fibers increases step by step, and the leaked urine is automatically absorbed through the urine passage hole. The absorbent fibers in each balloon expand into a spherical or elliptical shape after absorbing urine, blocking the gap between the balloon and the urethra to prevent displacement inside the balloon.

5. The automatic urine leakage prevention flushing catheter according to claim 1, characterized in that: The maximum capacity of the first balloon (2) is 35 ml and the maximum diameter is 2 cm.

6. The automatic urine leakage prevention flushing catheter according to claim 3, characterized in that: The maximum expansion diameter of the second balloon (4) is 1.2 cm.

7. The automatic urine leakage prevention flushing catheter according to claim 4, characterized in that: The number of balloons in the string of balloons is 3-6, and the maximum balloon diameter is 1 cm.

8. The automatic urine leakage prevention flushing catheter according to claim 1, characterized in that: The first balloon (2) and the second balloon (4) are both made of rubber, silicone, polyurethane, polypropylene or polytetrafluoroethylene; The outer diameter of the catheter body (3) is 6-22 Fr; the length of the catheter body (3) is 30-40 cm; and the head end of the catheter body (3) is semi-elliptical.

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