CN107648720B

CN107648720B - Built-in catheter

Info

Publication number: CN107648720B
Application number: CN201610594638.1A
Authority: CN
Inventors: 董东生; 艾星林; 姚飞; 周慷
Original assignee: Beijing Winsunny Harmony Science And Technology Co ltd
Current assignee: Beijing Winsunny Harmony Science And Technology Co ltd
Priority date: 2016-07-26
Filing date: 2016-07-26
Publication date: 2023-10-31
Anticipated expiration: 2036-07-26
Also published as: CN107648720A

Abstract

The invention provides a built-in catheter, which comprises a catheter and a control valve, wherein the interior of the catheter is hollow, a catheter cavity is formed in the catheter, a urine inlet is formed in one end of the catheter, a urine outlet is formed in the other end of the catheter, the catheter comprises a prostate part, a membrane part and a ball part, the control valve is positioned in the catheter cavity and is used for controlling the on-off of the catheter cavity, the prostate part is provided with a prostate part bulge, the ball part is provided with a ball part bulge, the membrane part is provided with a membrane part recess, the prostate part bulge, the ball part bulge and the membrane part recess between the prostate part and the ball part are in a bent dumbbell shape in a male urethra, so that the catheter is prevented from moving forwards and backwards, and interference compression on the neck of the male bladder and the male urethra can be eliminated.

Description

Built-in catheter

Technical Field

The invention relates to a built-in catheter, in particular to a device for controlling urine to be led out according to pressure change and drainage in the bladder of a human body, and belongs to the technical field of medical appliances.

Background

Clinically, there are many paraplegic patients, hemiplegic patients, coma patients, high paraplegic patients and so on caused by cerebrovascular and spinal vascular diseases, most of them are accompanied with the obstacle in urination, and the indwelling catheterization becomes a common means for solving the urination obstacle of the patients. The urethral catheterization device used for traditional indwelling catheterization consists of a through-type urethral catheter inserted into urethra and a urine bag connected with the lower end of the urethral catheter. The urine in the urinary catheter is continuously led out, so that normal intravesical pressure cannot be formed in the urinary bladder, the detrusor muscle and the internal sphincter of the urinary bladder of a patient are in a waste state for a long time, the whole urinary tract system cannot be protected by utilizing the urine control principle of low-pressure urine storage and low-pressure urine discharge, and the through-type urinary catheter is led out of the body from the interior of the urinary bladder of a human body directly, so that the infection risk of the urinary bladder of the human body is increased, and the following risks can be generated after the through-type urinary catheter is used for a long time:

1. The continuous drainage of the catheter leads the bladder of the patient to lack of filling state for a long time, which is easy to cause the adhesion of the bladder wall;

2. the continuous drainage of the catheter reduces the pressure gradient between the bladder and the outside, so that the outer diameter, hardness and the like of the tube wall are often required to be increased to ensure smooth drainage, and the urethral mucosa of a patient is pressed and ischemic injury occurs;

3. the catheter continuously drains to enable nerve receptors of the bladder to change adaptively, so that the bladder can not sense the filling of urine in the bladder and complete urination and reflection, and urine retention occurs;

4. when the catheter drains urine, bacteria on the outer wall of the catheter can reversely infect the urinary system;

5. the catheter is fixed at the neck of the human bladder by the saccule, and ischemic injury occurs to the neck of the bladder of the patient due to long-time compression;

6. in order to avoid the phenomenon of urinary leakage of the catheter, a large-sized catheter is often selected, so that the urethral mucosa of a patient is pressed and ischemic injury occurs, and the urethral catheter is more easily pressed particularly for a narrow membranous urethra which is a vulnerable part of urethral trauma.

To solve the above-mentioned technical problems, chinese patent publication No. CN102405033 discloses a urination control device, which comprises an upstream restraining member controlled by magnetic force, a downstream restraining member and a supporting member, wherein the supporting member is deployed in the bladder and can keep the urination control device in a stable position in the urethra, the upstream restraining member and the downstream restraining member attract to open or close the ball valve by magnetic force to control the urination of a human body, the device adjusts the internal pressure of the bladder when the urination starts through abdominal pressure to control the autonomous urination of the human body, and solves the technical problems caused by continuous drainage of the traditional urinary catheter, but the supporting member of the device continuously presses the bladder neck, which easily causes ischemic injury to the bladder neck of a patient.

Chinese patent publication No. CN203694361 discloses a built-in self-control catheter for men, which comprises a catheter bulging clamp portion located at the neck of the bladder and a distal bulging clamp portion located at the tip of the prostate of men, wherein the catheter bulging clamp portion is clamped and pressed in the bladder cavity, the distal bulging clamp portion prevents the catheter from sliding into the bladder cavity, and the two are used for fixing the catheter inside the urethra of the human body. The built-in self-control catheter is also provided with a magnetic urine control switch controlled by magnetic force for controlling the opening and closing of the catheterization passage, and the device solves the technical problem caused by continuous drainage of the traditional catheter, but also has the defect of pressing the neck of the human bladder.

Chinese patent publication No. CN2478610 discloses a local treatment catheter for prostate, comprising a tube body and a tube cavity, wherein the tube body comprises four cavities of a balloon lumen of a urethra balloon, a balloon lumen of a bladder, a urinary catheter lumen and a treatment lumen, two balloons are arranged on the tube body, and the balloons are respectively blocked in a bladder port and the urethra balloon after being inflated, so that the catheter is fixed, and the device has the defect of pressing the neck of the human bladder.

In the non-patent document, "analysis and nursing of 28 causes of discomfort of the indwelling balloon catheter" (selected from the group consisting of "Qilu journal of care" in 2007 19), it is disclosed that when the balloon catheter is used, the pressure in the balloon of the catheter is too high, and the pressure on the neck of the bladder and the urethral orifice is too high, so that the bladder is spastic, the pain of the patient is uncomfortable, and the feeling of urination is desired, and the document further proves that the indwelling balloon catheter has the disadvantage of continuously pressing the neck of the bladder of the human body.

In the non-patent document "analysis and countermeasure for urinary tract injury caused by indwelling catheter" (selected from "Hainan medical science" 2009, volume 20, 3), the cause of urinary tract injury caused by clinically indwelling balloon catheter in recent years is disclosed, wherein the ratio of mechanical injury caused by too thick urinary catheter to urinary mucosa is large, and the document further proves that the indwelling balloon catheter has the disadvantage of pressing on human urinary mucosa.

Because of the drawbacks of the conventional urinary catheterization device, according to the special physiological structure of the male urethra, medical instrument research and development personnel need to design a urinary catheterization device which not only can stably fix the urinary catheter in the human urethra, but also does not press the inner wall of the urethra and the neck of the bladder.

Disclosure of Invention

The invention provides a safe and reliable urethral catheterization device, which not only can stably fix a catheter in the urethra of a human body, but also solves a plurality of technical problems existing in the traditional urethral catheterization device.

To achieve the above object, a built-in urinary catheter, comprising: the urine catheter is in a hollow tubular shape with openings at two ends, the interior of the urine catheter is hollow, a urine cavity is formed in the urine catheter, a urine inlet is formed in one end of the urine catheter, a urine outlet is formed in the other end of the urine catheter, the urine catheter is positioned in a male physiological urethra and comprises a prostate part positioned in a male prostate part urethra, a membrane part positioned in a male membrane part urethra and a bulb part positioned in a male bulbar urethra, the urine inlet of the urine catheter is positioned in a bladder neck or bladder cavity, and the urine outlet is positioned in a male bulbar urethra or a male penis part urethra; the control valve is positioned in the catheter catheterization cavity between the catheter ball part and the urine outlet, and when the control valve is in an open state, urine entering from the urine inlet flows to the urine outlet through the control valve and is discharged from the urethra external port; the external surface of the wall of the prostatic part is provided with at least one prostatic bulge which protrudes outwards, the external surface of the wall of the bulb part is provided with at least one spherical bulge which protrudes outwards, and the prostatic bulge, the spherical bulge and the catheter between the prostatic bulge and the spherical bulge are bent dumbbell-shaped in the physiological urethra of a male, so that the catheter is fixed in the urethra and is prevented from being displaced.

The male urethra is from the inner urethral orifice of the bladder neck, penetrates through the prostate, the urogenital diaphragm and the penis, is stopped at the outer urethral orifice of the glans penis, has the total length of about 20cm and comprises a front urethra and a rear urethra, and the front urethra is divided into three parts: the head urethra, the shaft urethra and the ball urethra of the penis. Wherein the length of the urethra at the head of the penis is about 2-3cm, and the circumference is about 2.1-2.7cm; the length of the urethra at the penis body is about 7-9cm, and the circumference is about 2.7-3.3cm; the bulbar urethra lumen is wider, about 4-5cm long and about 3.3-3.6cm in circumference. The posterior urethra is divided into two parts: a membranous urethra and a prostatic urethra, wherein the membranous urethra is the narrowest part except for the external orifice of the urethra, and has a length of about 1.5-2cm and a circumference of about 2.7cm; the prostatic urethra lumen is a shuttle-shaped part with the widest part of the urethra, the length of about 3-4cm and the circumference of about 4.5cm, wherein the urethral orifice of the prostatic urethra is positioned at the neck of the bladder or extends into the bladder cavity. The circumference is the circumference, and the length measured by a flexible rule around the circumference of the urethra is the circumference. The male urethra has two physiological bends throughout the course: the subpubic curvature and the pre-pubic curvature, wherein the subpubic curvature is from the inner meatus of the urethra to the penile suspensory fixation area, including the prostatic urethra, membranous urethra, and proximal bulbar urethra, the curvature angle is about 93 °. Three physiological stenosis in the male urethra are all the time: the external urethral orifice is in the shape of a longitudinal slit, and the internal urethral orifice is surrounded by a tubular membranous part urethra and a bladder neck muscle. The male urethra has three physiological distensions throughout the course: namely the navicular fossa, the bulbar urethra and the prostatic urethra.

In order to prevent the catheter from causing uncomfortable feeling to the inner wall of the male physiological urethra when being led into or led out of the male urethra, the catheter is made of soft, comfortable, good in elasticity, easy to deform, free of peculiar smell and good in histocompatibility. The catheter does not penetrate through the whole male physiological urethra, the length of the catheter is smaller than that of the male urethra, and preferably, the catheter is stopped at the bulbar urethra and is mainly used for cutting off a channel for retrograde infection of external bacteria, so that the retrograde infection of the external bacteria to the urinary system through the outer wall of the catheter is avoided, and the infection risk is greatly reduced. The catheter is suitable for a physiological structure of a male urethra, and fully utilizes the physiological characteristics of two physiological expansion, one physiological stenosis and one physiological bending in the male urethra, namely a prostatic urethra, a bulbar urethra, a membranous urethra and subpubic bending, wherein the membranous urethra is positioned between the prostatic urethra and the bulbar urethra, the membranous urethra is the narrowest part except for an external urethral orifice, and the stenosed membranous urethra prevents the prostatic bulge of the prostatic part of the catheter positioned in the prostatic urethra from sliding into the membranous urethra, thereby preventing the catheter from falling out of the male urethra. Also, the stenosed membranous urethra prevents the balloon bulge of the balloon portion of the catheter located in the balloon urethra from sliding into the membranous urethra, thereby preventing the catheter from sliding into the bladder cavity. The prostate bulge and the ball bulge not only enable the catheter to be stably fixed in the male urethra, but also avoid the uncomfortable symptoms of ischemic injury, bladder spasm and the like of the patient caused by the fact that the urethral mucosa of the patient is pressed and ischemic injury are caused by the fact that the traditional urethral catheterization device is used for guaranteeing that drainage is smooth, and the bladder neck of the patient is pressed for a long time by the aid of the balloon. In addition, because the subpubic curve is positioned between the inner orifice of the male urethra and the fixing area of the penile zonules, the bending angle of the subpubic curve is about 93 degrees, the catheter fully utilizes the physiological characteristics of the male urethra, and the catheter positioned between the bulge of the prostate and the bulge of the bulb is easy to deform and bend, so that the bulge of the prostate, the bulge of the bulb and the catheter between the bulge of the bulb are in a bent dumbbell shape in the male physiological urethra, and the bent catheter is not only favorable for preventing the catheter from entering the bladder cavity, but also favorable for preventing the catheter from falling out of the urethra. The prostate bulge can be a shuttle-shaped bulge or a cylindrical bulge formed by outwards bulging the tube wall of the prostate part of the catheter, and the prostate bulge can be also provided with outwards bulged point-shaped convex points or annular bulges, so that the contact area between the prostate part of the catheter and the inner wall of the male prostate urethra is reduced through point-shaped or annular contact, and the compression on the male prostate urethra is further reduced. In addition, in order to smoothly guide the catheter into the male urethra, the prostate bulge can also be a capsule body, after the catheter is guided to a correct position, the fluid is filled into the capsule body, and after the catheter is filled, the outline of the capsule body is one of a shuttle shape, a ball shape, a ring shape and a cylinder shape, so that the catheter is fixed in the urethra. The balloon bulge can be a spherical bulge or a cylindrical bulge formed by outwards bulging the wall of the balloon part of the catheter, and the balloon bulge can be also provided with outwards bulged point-shaped convex points or annular bulges, so that the contact area between the balloon part of the catheter and the inner wall of the male bulbar urethra is reduced through point-shaped or annular contact, and the compression on the male bulbar urethra is lightened. In order to lead the catheter into the male urethra smoothly, the balloon part bulge can also be a balloon body, after the catheter is led to the correct position, fluid is filled into the balloon body, the outline of the filled balloon body is one of a sphere shape, a ring shape and a cylinder shape, and the catheter is fixed in the urethra. The catheter bulb part can extend into the male penis part urethra, and the catheter positioned in the male penis part urethra is the penis part. The bulge of the prostate and the bulge of the ball part also have the function of expanding the urethra, so that the problem of difficult urination caused by urethral stricture and enlargement of the prostate is solved. The catheter membrane portion is located between the prostate portion and the bulb portion, the membrane portion having an outer diameter that is smaller than the outer diameters of the prostate portion and the bulb portion. The right position is that the urine inlet of the catheter is positioned in the neck of the bladder or the cavity of the bladder, the prostatic part of the catheter is positioned in the prostatic urethra of the male, the membranous part of the catheter is positioned in the membranous urethra of the male, the bulbar part of the catheter is positioned in the bulbar urethra of the male, and the urine outlet of the catheter is positioned in the bulbar urethra of the male or in the penis urethra of the male. The urine inlet is an opening of the urine guiding cavity above the prostate part of the catheter, and the urine outlet is an opening of the urine guiding cavity above the ball part of the catheter or the penis part. The control valve is positioned in the urethral catheterization cavity of the urethral catheter between the bulb part of the urethral catheter and the urine outlet through the magnetic traction control switch, so that the external control is facilitated, and the urethral catheter between the bulb part of the urethral catheter and the urine outlet is closer to the external than other parts of the urethral catheter. In order not to influence the unobstructed urine, the control valve is arranged in the convex urethral catheterization cavity of the bulb part of the catheter, and the convex urethral catheterization cavity of the bulb part of the catheter is wider than the urethral catheterization cavities of other parts of the catheter.

The outer surface of at least a part of the tube wall of the membrane part of the catheter is inwards concave to form a membrane part concave, the membrane part concave is positioned in the narrow male membrane part urethra, and the membrane part concave is positioned between the prostate part bulge and the bulb part bulge of the catheter, so that the catheter is beneficial to bending in the urethra, and interference compression on the male membrane part urethra is relieved. The membrane portion recess can be the indent arc shape of catheter membrane portion pipe wall, and catheter membrane portion pipe wall still can be equipped with punctiform pit or annular form recess. According to the physiological characteristics of male urethra, the membranous urethra is the narrowest part except the external orifice of the urethra, so that the catheter is difficult to pass through the membranous urethra and needs to be bent. The traditional indwelling catheter is in a tubular shape with the same diameter, so that the outer diameter of the catheter wall is often required to be increased in order to avoid the phenomenon of urine leakage, and the outer diameter of the overall pipeline of the catheter is increased, so that the catheter is not easy to bend when passing through the membranous urethra, and interference compression is caused on the narrow membranous urethra. In order to relieve the compression to the male membranous urethra and smoothly pass through the membranous urethra, the catheter membranous part is in shape of the male membranous urethra to be bent, and is provided with membranous recess, and the membranous recess enables the outer diameter of the catheter membranous part pipe wall to be smaller than or equal to the inner diameter of the membranous urethra, so that the interference compression to the membranous urethra is avoided. Specifically, the catheter membrane part is in a thin tube shape, and the thin tube-shaped membrane part is easier to deform and bend and is suitable for the male membrane urethra.

The catheter also comprises a monitoring part, wherein the monitoring part is connected with the catheter and positioned in the bladder cavity, and comprises a pressure sensor, a temperature sensor, a processor, a wireless transmitting module and a power supply. The monitoring part also comprises a shell and display equipment, the pressure sensor, the temperature sensor, the processor, the wireless transmitting module and the power supply are contained in the shell, the shell is positioned at the urine inlet of the catheter, and the shell is connected with the catheter in a detachable connection mode such as plugging, threaded connection, snap-in connection and the like or is adhered and fixed together by adopting medical-grade adhesive. The pressure sensor monitors urine pressure data in the bladder cavity in real time, in order to ensure that the pressure sensor monitoring data is not influenced by urine itself, blood clots in the urine and stones in the urine, the surface of the pressure sensor is provided with a silica gel coating with the Shore hardness of 0 HA. The temperature sensor monitors urine temperature data in the bladder cavity in real time. The processor processes the pressure data and the temperature data and then transmits the processed pressure data and temperature data to the display device through the wireless transmitting module. The display device is positioned outside the human body, can receive various data sent by the processor, and displays data parameters and executed instructions generated by the processor to guide medical staff and patients to urinate. In addition, the display device also comprises a wireless transmitting module, and data is transmitted to a data end of a hospital or a patient through the wireless transmitting module so as to be used for doctors and scientific researchers to analyze and study the illness state. The power supply supplies power to each component of the monitoring portion, and can be one of direct current or alternating current.

The monitoring part is connected with the urine inlet of the catheter through at least two flexible laces or flexible pipe walls. A flexible lacing gap is arranged between the flexible lacing and the flexible lacing, and urine in the bladder cavity flows to a urine inlet of the catheter from the flexible lacing gap. The flexible tube wall is provided with a flexible tube wall opening, and urine in the bladder cavity flows from the flexible tube wall opening to the urine inlet of the catheter. The gap for passing urine is large, the flexible lacing or the flexible pipe wall is soft and easy to deform, the resistance that urine in the bladder cavity flows into the urine inlet of the catheter through the gap of the flexible lacing or the opening of the flexible pipe wall is reduced, and the smoothness that urine in the bladder cavity flows into the urine inlet of the catheter is ensured.

The monitoring part also comprises a wireless charging module, the wireless charging module comprises an internal receiving part and an external charging part, the internal receiving part is positioned in the monitoring part, the external charging part is positioned outside a human body, and the internal receiving part receives electromagnetic waves emitted by the external charging part to charge a power supply. The wireless charging module adopts non-contact, movable and wireless charging power supply, so that normal operation and service cycle of the monitoring part are guaranteed, and medical staff and patients can operate conveniently.

The control valve comprises a positioning magnetic ring, a magnetic ball, an external magnet and a switch cavity for the movement of the magnetic ball, wherein the positioning magnetic ring is positioned in the urethral catheterization cavity, the magnetic ball closes the control valve under the attraction of the magnetic force of the positioning magnetic ring, and urine entering from the urine inlet cannot flow to the urine outlet through the control valve; the external magnet is utilized to attract the magnetic ball outside the body, so that the magnetic ball is displaced in the switch cavity, the closing of the control valve is relieved, and urine entering from the urine inlet flows to the urine outlet through the control valve. The positioning magnetic ring is hollow and annular, a containing groove for containing the positioning magnetic ring is formed in the inner surface of the catheter wall, and the positioning magnetic ring is fixed in the containing groove in a conformal mode. The switch cavity is a section of the catheter urinary cavity between the ball part of the catheter and the urine outlet, one end of the switch cavity is provided with a switch cavity inlet, the other end of the switch cavity is provided with a switch cavity outlet, and the positioning magnetic ring is positioned at the switch cavity inlet or at the switch cavity outlet. The outer diameter of the magnetic ball is larger than the inner diameters of the inlet and the outlet of the switch cavity, and a gap allowing urine to pass through is reserved between the magnetic ball and the switch cavity. The magnetic ball is attracted by the magnetic force of the positioning magnetic ring and moves towards the inlet or the outlet of the switch cavity, so that the inlet or the outlet of the switch cavity is blocked. The switch cavity is a section of the catheter urinary cavity between the ball part of the catheter and the urine outlet, and the switch cavity inlet or the switch cavity outlet is plugged to control the switch cavity to be closed, so that urine entering from the urine inlet is prevented from flowing to the urine outlet through the control valve. When a patient needs to urinate, the magnetic ball is attracted by the magnetic force of the external magnet and moves towards the direction deviating from the inlet of the switch cavity or the outlet of the switch cavity, the closing of the control valve in the urethral catheterization cavity is relieved, and urine entering from the urine inlet flows to the urine outlet through a gap between the switch cavity and the magnetic ball.

The surface of the magnetic ball contains a metal film with antibacterial performance of Au, ag, zn or Sn. The metal film is fixed on the surface of the magnetic ball by adopting a chemical bonding technology. The metal film has wide physical bactericidal effect and strong killing effect on escherichia coli, pseudomonas aeruginosa and staphylococcus aureus in urine.

The external magnet is an electromagnet, and the magnetic pole of the external magnet can be changed by changing the current direction. When urination, the magnetic ball is attracted by the magnetic force of the external magnet and moves towards the direction deviating from the inlet of the switch cavity or the outlet of the switch cavity, the closing of the control valve in the urine guiding cavity is relieved, and urine entering from the urine inlet flows to the urine outlet through a gap between the switch cavity and the magnetic ball. Urination is completed, the magnetic pole of the external magnet is changed by changing the current direction, the magnetic ball is displaced towards the inlet or outlet of the switch cavity under the magnetic force repulsion of the external magnet and the magnetic force attraction of the positioning magnetic ring, and the control valve in the urinary catheterization cavity is closed by plugging the inlet or outlet of the switch cavity, so that urine entering from the urine inlet is prevented from flowing to the urine outlet through the control valve.

The inner surface of the catheter wall near the urine outlet is provided with annular catheter bulges and catheter grooves or punctiform catheter convex points and catheter concave points. The catheter bulge is an annular bulge protruding towards the central direction of the catheter from the inner surface of the catheter wall, the catheter groove is an annular groove recessed towards the inner part of the catheter wall from the inner surface of the catheter wall, and the catheter bulge and the catheter groove are alternately arranged. The catheter convex points are point convex points, wherein the inner surface of the catheter wall protrudes towards the center of the catheter. The catheter pits are punctiform pits which are concave from the inner surface of the catheter wall to the inner part of the catheter wall. The catheter bulge, the catheter groove, the catheter convex point and the catheter concave point are favorable for connection and fixation between the catheter and an external component, and the external component is a device for assisting the catheter to be led into or led out of the urethra.

The utility model provides a urine inlet is located outside the urine inlet of the catheter, urine outlet is located outside the urethra outer opening, the outer surface of the outer section tube wall of the urine inlet of the catheter is provided with a filling type guiding sleeve positioning bag, the inner part of the tube wall of the guiding sleeve is provided with a guiding sleeve positioning bag fluid channel, one end of the guiding sleeve positioning bag fluid channel is communicated with the inner cavity of the guiding sleeve positioning bag, the other end is provided with a fluid injection port of a positioning bag of the introducing sleeve at the outer section of the urine outlet of the introducing sleeve, at least one part of the pipe wall of the inner section of the urine guiding cavity of the introducing sleeve is provided with a fixing structure of the introducing sleeve, the fixing structure of the introducing sleeve is detachably connected with the inner surface of the pipe wall of the urine guiding pipe, the introducing sleeve is driven to move towards the inner part of the urethra by applying external force, the urine guiding pipe is driven to move, when the urine inlet of the urine guiding pipe enters the cavity of the urinary bladder, fluid is injected into the inner cavity of the positioning bag of the introducing sleeve through the fluid injection port of the positioning bag of the introducing sleeve, at the moment, the flexible lacing or the flexible pipe wall arranged outside the urine inlet expands and stretches along with the positioning bag of the introducing sleeve, the outer diameter of the positioning bag of the introducing sleeve is larger than the inner diameter of the inner opening of the urethra after filling, and then, applying external force to drive the outer section of the urine outlet of the guide sleeve to move towards the outer direction of the urine outlet of the urethra, and simultaneously driving the catheter to move, and determining that the bulge of the prostate is moved to the prostate part and the bulge of the ball part is moved to the ball part when the positioning bag of the guide sleeve is pressed on the neck of the bladder and cannot be moved. The guiding sleeve is made of soft, comfortable, good in elasticity, easy to deform, free of peculiar smell and good in tissue compatibility, and the guiding sleeve assists the catheter to be guided into the male urethra, so that the catheter is positioned at the correct position. The guiding-in sleeve positioning bag is in a film shape and is positioned on the outer surface of the outer section pipe wall of the urine inlet of the guiding-in sleeve, and is fixedly and hermetically connected with the outer surface of the outer section pipe wall of the urine inlet of the guiding-in sleeve through a medical-grade adhesive, and the outer contour of the guiding-in sleeve positioning bag is in one of a spherical shape, a cylindrical shape and a ring shape after filling. The guide sleeve fixing structure of the outer surface of the inner section pipe wall of the guide sleeve urethral catheterization cavity is connected with the inner surface of the pipe wall of the urethral catheter in a detachable connection mode such as threaded connection, elastic deformation connection, magnet traction and the like.

Before the catheter is led into the male urethra, the inner section of the catheter guiding cavity of the leading-in sleeve is led into the catheter guiding cavity in advance, the outer section of the urine inlet of the leading-in sleeve is positioned outside the urine inlet of the catheter, the outer section of the urine outlet of the leading-in sleeve is positioned outside the urine outlet of the catheter, and then the fixing structure of the leading-in sleeve is detachably connected with the inner surface of the catheter wall. When the urinary catheter is introduced into the male urethra, external force is applied to drive the outer section of the urine outlet of the introducing sleeve to enable the introducing sleeve to displace into the male urethra, the urinary catheter is driven to displace simultaneously, the urinary catheter is introduced into the male urethra through the outer urethra, when the urine inlet of the urinary catheter is positioned in the neck or the cavity of the urinary bladder, urine in the cavity of the urinary bladder flows from the urine inlet of the introducing sleeve to the urine outlet through the urine introducing cavity, at the moment, the urinary catheter is introduced into the male urethra for 2cm to 3cm again, after the positioning bag of the introducing sleeve completely enters the cavity of the urinary bladder, fluid is injected into the cavity of the positioning bag of the introducing sleeve through the fluid inlet of the positioning bag of the introducing sleeve, the positioning bag of the introducing sleeve is inflated, external force is applied to drive the outer section of the urine outlet of the introducing sleeve to enable the introducing sleeve to move towards the outer urethra, and meanwhile, the urinary catheter is driven to displace, and when the positioning bag of the introducing sleeve is blocked and pressed on the neck of the urinary bladder cannot move, the correct introducing position of the urinary catheter is determined. After the urinary catheter is introduced into the male urethra, the fixing structure of the introducing sleeve is disconnected with the inner surface of the wall of the urinary catheter, the positioning bag of the introducing sleeve discharges fluid, and then external force is applied to drive the outer section of the urine outlet of the introducing sleeve to move the introducing sleeve towards the outer direction of the urethra outer opening, so that the introducing sleeve is taken out from the male urethra.

The guide-in sleeve fixing structure is at least one inflatable guide-in sleeve fixing bag which is positioned on the outer surface of the inner section of the catheter wall of the guide-in sleeve, a guide-in sleeve fixing bag fluid channel is arranged in the inner section of the catheter wall of the guide-in sleeve, one end of the guide-in sleeve fixing bag fluid channel is communicated with the inner cavity of the guide-in sleeve fixing bag, the other end is provided with a fluid injection opening of the fixed bag of the leading-in sleeve at the outer section of the urine outlet of the leading-in sleeve, fluid is injected into the inner cavity of the fixed bag of the leading-in sleeve through a fluid channel of the fixed bag of the leading-in sleeve, the fixed bag of the leading-in sleeve is inflated, and the fixed bag of the leading-in sleeve is detachably connected with the inner surface of the wall of the catheter after being inflated. The fixed bag of the leading-in sleeve is in a film shape and is positioned on the outer surface of the inner section pipe wall of the urethral catheterization cavity of the leading-in sleeve, and is fixedly and hermetically connected with the outer surface of the inner section pipe wall of the urethral catheterization cavity of the leading-in sleeve through a medical-grade adhesive, and the outline of the fixed bag of the leading-in sleeve is one of a spherical shape, a cylindrical shape, a ring shape and an uneven shape after filling. In order to enhance the connection firmness between the guide sleeve fixing bag and the inner surface of the catheter tube wall, the inner surface of the catheter tube wall is provided with anti-skid grains, wherein the anti-skid grains are uneven grains for increasing friction force on the inner surface of the catheter tube wall. Of course, the inner surface of the catheter tube wall is frosted or sandblasted, and the friction force of the inner surface of the catheter tube wall can be increased. The fluid is injected into the inner cavity of the guide sleeve fixed bag through the fluid injection opening of the guide sleeve fixed bag and the fluid channel of the guide sleeve fixed bag, the guide sleeve fixed bag is inflated, and the guide sleeve fixed bag is detachably connected with the inner surface of the catheter wall after the inflation. After the urinary catheter is introduced into the male urethra, the fluid in the inner cavity of the fixed bag of the introducing sleeve is discharged, the fixed bag of the introducing sleeve is released from being connected with the inner surface of the wall of the urinary catheter, and then the external force is applied to drive the outer section of the urine outlet of the introducing sleeve to enable the introducing sleeve to move towards the outer direction of the urethra outer opening, so that the introducing sleeve is taken out from the male urethra.

The catheter is inserted into the catheter groove after the guiding sleeve fixing bag is filled, and the top end and the bottom end of the sleeve fixing bag are guided after the catheter bulge arranged on the inner surface of the catheter wall is clamped and fixedly filled; the catheter is characterized in that the guide-in sleeve fixed bag is provided with guide-in sleeve fixed bag convex points and guide-in sleeve fixed bag concave points, the guide-in sleeve fixed bag convex points are embedded into the catheter concave points, and the catheter convex points are embedded into the guide-in sleeve fixed bag concave points, so that the guide-in sleeve fixed bag is detachably connected with the inner surface of the catheter wall. In another mode, a plurality of the guide sleeve fixing sacs are alternately arranged, a guide sleeve fixing sac interval is reserved between the guide sleeve fixing sacs and the guide sleeve fixing sacs, the guide sleeve fixing sacs are embedded into the catheter groove after filling, and the catheter protrusions are embedded into the guide sleeve fixing sacs interval. The guide sleeve fixing bag convex points are point convex points protruding outwards from the outer surface of the guide sleeve fixing bag wall, and the guide sleeve fixing bag concave points are point concave points recessed inwards from the outer surface of the guide sleeve fixing bag wall. The above matching mode further enhances the connection firmness between the guiding sleeve fixing bag after filling and the inner surface of the catheter wall.

The catheter is characterized in that the fixing structure of the guide sleeve is a guide sleeve external thread which is positioned on the outer surface of the inner section of the catheter wall of the guide sleeve catheter cavity, and the inner surface of the catheter wall is provided with a catheter internal thread which is matched with the guide sleeve external thread. The screw thread is used for matching more firmly, the processing technology is simple, and the disassembly is convenient.

The outer surface of the wall of the guide-in sleeve is provided with guide-in sleeve scales. The guide sleeve scale is positioned in the length direction of the guide sleeve and is an indication structure arranged on the outer surface of the pipe wall of the guide sleeve, and the guide sleeve scale has the functions of marking and measuring.

The utility model provides a derive sleeve pipe, derive sleeve pipe is including being located the intraductal export sleeve pipe catheterization intracavity section of catheter and being located the outside export sleeve pipe urine outlet section of catheter urine outlet, export sleeve pipe urine outlet section extends to the urethra outside outlet, be equipped with export sleeve pipe fixed knot on export sleeve pipe catheterization intracavity section at least some pipe wall, this export sleeve pipe fixed knot constructs and is connected with catheter pipe wall internal surface is detachable, will export the export sleeve pipe fixed knot on the intraductal section pipe wall of sleeve pipe and be connected with catheter pipe wall internal surface is detachable, applys outside external force drive export sleeve pipe urine outlet section outside to the outside direction removal of urethra outside outlet, drives the catheter and derives from the urethra. The guiding-out sleeve is made of soft, comfortable, good in elasticity, easy to deform, free of peculiar smell and good in tissue compatibility, and the guiding-out sleeve assists the catheter to be taken out from the urethra of the male. The outer surface of the inner section pipe wall of the guiding-out sleeve urethral catheterization cavity and the inner surface of the pipe wall of the urethral catheter can be detachably connected through threaded connection, elastic deformation connection, magnet traction and the like. Before the catheter is led out of the inner part of the male urethra, external force is applied to drive the outer section of the urine outlet of the guide sleeve to enable the guide sleeve to move towards the inner part of the male urethra through the outer urethra, the inner section of the guide cavity of the guide sleeve is led into the guide cavity of the catheter, and the outer section of the urine outlet of the guide sleeve is positioned outside the urine outlet of the catheter. When the catheter is led out of the inside of the male urethra, the guide sleeve fixing structure on the inner section wall of the guide sleeve catheter cavity is detachably connected with the inner surface of the catheter tube wall, and then external force is applied to drive the outer section of the guide sleeve catheter urine outlet to enable the guide sleeve catheter to move towards the outer direction of the urethra outer opening, and meanwhile the catheter is driven to move, so that the catheter is led out of the inside of the male urethra.

The guiding-out sleeve fixing structure is at least one inflatable guiding-out sleeve fixing bag, the guiding-out sleeve fixing bag is located on the outer surface of the inner section pipe wall of the guiding-out sleeve urethral catheterization cavity, guiding-out sleeve fixing bag fluid channels are formed in the inner portion of the guiding-out sleeve pipe wall, one ends of the guiding-out sleeve fixing bag fluid channels are communicated with the inner cavity of the guiding-out sleeve fixing bag, guiding-out sleeve fixing bag fluid injection openings are formed in the outer section of the urine outlet of the guiding-out sleeve, fluid is injected into the inner cavity of the guiding-out sleeve fixing bag through the guiding-out sleeve fixing bag fluid injection openings, the guiding-out sleeve fixing bag is inflated, and the guiding-out sleeve fixing bag is detachably connected with the inner surface of the pipe wall of the urethral catheter after filling. The guiding-out sleeve fixing bag is in a film shape and is positioned on the outer surface of the inner section pipe wall of the guiding-out sleeve urethral catheterization cavity and fixedly and hermetically connected with the outer surface of the inner section pipe wall of the guiding-out sleeve urethral catheterization cavity through a medical-grade adhesive. In order to enhance the connection firmness between the guide-out sleeve fixing bag and the inner surface of the catheter tube wall, the inner surface of the catheter tube wall is provided with anti-skid patterns or is frosted or sandblasted. The outer contour of the guide-out sleeve fixing bag is one of spherical, cylindrical, annular and rugged after being filled. The fluid is injected into the inner cavity of the guide sleeve fixed bag through the guide sleeve fixed bag fluid channel, the guide sleeve fixed bag is inflated, the guide sleeve fixed bag is detachably connected with the inner surface of the catheter wall after being inflated, and then the external force is applied to drive the outer section of the urine outlet of the guide sleeve to enable the guide sleeve to move towards the outer direction of the urethra outer opening, and meanwhile the catheter is driven to move, so that the catheter is guided out of the urethra of a male.

The guiding-out sleeve fixing bag is embedded into the catheter groove after being filled, and the top end and the bottom end of the sleeve fixing bag are guided out after the catheter bulge clamping position arranged on the inner surface of the catheter wall is fixedly filled; the guiding-out sleeve fixed bag is provided with guiding-out sleeve fixed bag convex points and guiding-out sleeve fixed bag concave points, the guiding-out sleeve fixed bag convex points are embedded into the catheter concave points, and the catheter convex points are embedded into the guiding-out sleeve fixed bag concave points, so that the guiding-out sleeve fixed bag is detachably connected with the inner surface of the catheter tube wall. In another mode, a plurality of guiding-out sleeve fixed bags are alternately arranged, guiding-out sleeve fixed bags are reserved between the guiding-out sleeve fixed bags and the guiding-out sleeve fixed bags, the guiding-out sleeve fixed bags are embedded into the catheter grooves after being filled, and the catheter protrusions are embedded into the guiding-out sleeve fixed bags. The guide sleeve fixing bag convex points are point convex points protruding outwards from the outer surface of the guide sleeve fixing bag wall, and the guide sleeve fixing bag concave points are point concave points recessed inwards from the outer surface of the guide sleeve fixing bag wall. The above matching mode further enhances the connection firmness between the guiding-out sleeve fixing bag after filling and the inner surface of the catheter tube wall.

The guiding sleeve is a hollow pipeline, a plurality of longitudinal strip-shaped cuts are formed in the front end pipe wall of the guiding sleeve, the cuts are uniformly arranged around the circumference of the front end pipe wall of the guiding sleeve, the guiding sleeve fixing structure comprises a spacing part between the cuts and a wire drawing arranged inside the guiding sleeve, one end of the wire drawing is connected with the front end of the guiding sleeve, the other end of the wire drawing extends out of the rear end of the guiding sleeve, external force is applied to drive the wire drawing to move in the outer direction of the rear end of the guiding sleeve, the spacing part of the guiding sleeve is expanded in an umbrella shape, the spacing part is embedded in a groove of a catheter, and the spacing part after the expansion is fixed by a convex clamping position of the catheter arranged on the inner surface of the catheter pipe wall. The wire drawing is long and thin tubular, and comprises a wire drawing inner section positioned in the hollow of the guiding-out sleeve and a wire drawing outer section positioned outside the urine outlet outer section of the guiding-out sleeve. Before the catheter is led out of the inner part of the male urethra, external force is applied to drive the outer section of the urine outlet of the leading-out sleeve to enable the leading-out sleeve to move towards the inner part of the male urethra through the outer urethra, the inner section of the urine guiding cavity of the leading-out sleeve is led into the urine guiding cavity of the catheter, the outer section of the urine outlet of the leading-out sleeve is positioned outside the urine outlet of the catheter, and the outer section of the wire drawing is positioned outside the outer section of the urine outlet of the leading-out sleeve; when the urinary catheter is led out of the male urethra, the external force is applied to drive the external wire drawing section to enable the wire drawing to move towards the external direction of the urethra external port, the front end of the internal section of the urinary catheter cavity of the guiding sleeve is driven to move, at the moment, the interval part of the internal section of the urinary catheter of the guiding sleeve positioned in the urinary catheter cavity is expanded outwards in an umbrella shape, the interval part after expansion is embedded into the groove of the urinary catheter, the convex clamping position of the urinary catheter arranged on the inner surface of the wall of the urinary catheter is fixedly expanded, the internal section of the urinary catheter of the guiding sleeve is detachably connected with the urinary catheter, and the external force is applied to drive the external wire drawing section to enable the wire drawing to continue to move towards the external direction of the urethra external port, and meanwhile, the urinary catheter is driven to move, and the urinary catheter is led out of the male urethra.

The outer surface of the wall of the guiding-out sleeve is provided with guiding-out sleeve scales. The guiding-out sleeve scale is positioned in the length direction of the guiding-out sleeve and is an indication structure arranged on the outer surface of the wall of the guiding-out sleeve, and the guiding-out sleeve scale has the functions of marking and measuring.

The beneficial effects are that:

the built-in catheter utilizes the structural design of the bulge of the prostate part, the concave of the membrane part and the bulge of the bulb part to ensure that the catheter is stably fixed in the male urethra, prevent the catheter from sliding into the bladder cavity or falling out of the male urethra, and simultaneously avoid the technical problem that the catheter device in the prior art is fixed on the neck of the human bladder by using the saccule and causes ischemic injury of the neck of the bladder of a patient due to long-time compression. In addition, the catheter does not penetrate through the whole male urethra, so that a bacterial retrograde infection channel is effectively blocked, the risk of repeated intubation is avoided, and the degree of freedom of a user is increased. In addition, the catheter is also provided with a control valve, and autonomous urination is realized by opening the control valve in vitro, so that a plurality of risks existing in continuous drainage of the traditional catheter are solved.

The built-in catheter also comprises a monitoring part, the monitoring part can monitor the pressure and the temperature of urine in the bladder in real time, the collected pressure and temperature data are transmitted to the external display equipment through the wireless transmitting module, and the display equipment displays the collected data and guides medical staff and patients to urinate autonomously. In addition, the display device transmits data to a data end of a hospital or a patient through the wireless transmitting module, so that doctors and scientific researchers can conduct disease analysis and research.

The built-in catheter also comprises an introduction sleeve and a discharge sleeve, wherein the introduction sleeve assists the built-in catheter to be introduced into the male urethra so that the catheter is introduced to the correct position. The guiding-out sleeve assists the built-in catheter to be guided out from the urethra. The guide-in sleeve and the guide-out sleeve are matched with the catheter for use, so that the working efficiency of medical staff is improved.

Drawings

FIG. 1 is a schematic view showing a three-dimensional cutaway structure of a built-in catheter according to the present invention in a use state;

FIG. 2 is a schematic view of a partial perspective view of a built-in catheter according to the present invention;

FIG. 3 is a schematic view of the cross-sectional structure of a urinary catheter of the present invention;

FIG. 4 is a schematic view of a three-dimensional cutaway exploded view of a catheter according to the present invention 1;

FIG. 5 is a schematic view of a partial perspective cutaway structure of a control valve for a built-in catheter of the present invention;

FIG. 6 is a schematic view of a three-dimensional cutaway exploded view of a catheter according to the present invention;

FIG. 7 is a schematic perspective view showing the use state of the monitoring part of the built-in catheter according to the present invention;

FIG. 8 is a schematic flow chart of the monitoring portion of the catheter of the present invention;

FIG. 9 is a schematic view of a three-dimensional partially cut-away structure of a wireless charging module for a urinary catheter according to the present invention in use;

FIG. 10 is a schematic view showing a partial perspective view of the use state of the flexible tether for a catheter according to the present invention;

FIG. 11 is a schematic view of the partial structure of the flexible tube wall of the built-in catheter according to the present invention in use;

FIG. 12 is a schematic view of a cut-away construction of an introducer sheath according to the present invention;

FIG. 13 is a schematic view of a partial perspective structure of an introducer sheath according to the present invention in a use state;

FIG. 14 is a schematic view of a partial perspective view of the use state of the introducer sheath according to the present invention;

FIG. 15 is a schematic view of a partial perspective structure of the use state of the introduction sleeve of the present invention;

FIG. 16 is a schematic view of a partial perspective view of the use state of the introducer sheath of this invention;

FIG. 17 is a schematic view of a partial perspective view of the use state of the introducer sheath of this invention;

FIG. 18 is a schematic view of a three-dimensional partially cut-away view of an introducer sheath according to the present invention in use;

FIG. 19 is a schematic view of a cut-away configuration of a delivery cannula according to the present invention;

FIG. 20 is a schematic view of a partial perspective structure of a use state of a guide-out sleeve according to the present invention 1;

FIG. 21 is a schematic view of a partial perspective structure of the use state of the guide-out sleeve according to the present invention;

FIG. 22 is a schematic view of a partial perspective structure of the use state of the guide-out sleeve of the present invention;

FIG. 23 is a schematic view of a partial structure of a delivery cannula according to the present invention;

FIG. 24 is a schematic view of a partial cut-away view of the use of the delivery cannula of the present invention;

FIG. 25 is a schematic view of a partial perspective structure of the use state of the guide-out sleeve of the present invention 4;

FIG. 26 is a schematic view of a partial perspective view of the use state of the export sleeve according to the present invention 5;

FIG. 27 is a schematic view of a three-dimensional partially cut-away structure of a use state of a delivery cannula according to the present invention;

FIG. 28 is a schematic view of a three-dimensional cut-away structure of a check valve of the present invention;

in the figure: 1. a urinary catheter; 10. a urinary catheterization cavity; 101. a urine inlet; 102. a urine outlet; 103. a urinary catheter bulge; 104. a urinary catheter groove; 105. catheter bumps; 106. catheter pits; 107. an internal thread; 108. an iron ring; 11. a prostatic portion; 111. a prostatic bulge; 112. a prostatic bulge fluid channel; 1121. a prostatic bulge fluid injection port; 1122. a prostatic bulge communication port; 12. a film portion; 121. the membrane part is concave; 13. a ball portion; 131. the ball part is convex; 132. the ball portion protrudes the fluid channel; 1321. a ball portion protruding fluid injection port; 1322. the ball part is provided with a convex communication port; 14. a catheter anterior segment; 141. an annular groove; 142. an annular boss; 15. a catheter posterior segment; 16. a first section of urinary catheter; 161. an annular cavity; 17. a second section of urinary catheter; 18. a third section of the urinary catheter; 19. a penis portion; 2. a urethra; 21. a prostatic urethra; 22. a membranous urethra; 23. a bulbar urethra; 24. an inner urethral orifice; 25. an external urethral orifice; 26. a penile urethra; 3. a bladder; 31. bladder neck; 32. a bladder cavity; 4. a control valve; 41. positioning a magnetic ring; 411. a receiving groove; 42. a magnetic ball; 43. an external magnet; 44. a switching cavity; 441. a switching chamber inlet; 442. a switch cavity outlet; 443. a gap; 5. a monitoring section; 51. a pressure sensor; 52. a temperature sensor; 53. a processor; 54. a wireless transmitting module; 55. a power supply; 56. a wireless charging module; 561. an in-vivo receiving component; 562. an in vitro charging member; 58. a housing; 581. a flexible tie; 5811. a flexible lacing gap; 582. a flexible tube wall; 5821. a flexible tube wall opening; 59. a display device; 6. an introduction cannula; 61. a urine drainage cavity; 611. a urine inlet; 612. a urine outlet; 62. leading into the inner section of the catheter catheterization cavity of the sleeve; 621. leading in a sleeve fixing bag; 622. leading in external threads of the sleeve; 623. leading in a sleeve electromagnet; 63. the outer section of the urine outlet of the guide sleeve; 64. leading into the outer section of the urine inlet of the sleeve; 641. introducing a sleeve positioning bag; 6411. the guide sleeve fixes the bag interval; 6412. leading-in sleeve to fix the convex points of the bag; 6413. leading in sleeve fixing bag concave points; 65. introducing a cannula fixed bladder fluid passageway; 651. a fluid injection port for introducing the sleeve fixing bag; 652. a guide sleeve fixing bag communication port; 66. introducing a cannula positioning balloon fluid passage; 661. a fluid injection port of the guiding sleeve positioning bag; 662. leading-in sleeve positioning bag communication port; 67. leading in a sleeve scale; 68. leading in a sleeve fixing structure; 7. a lead-out sleeve; 71. guiding out the inner section of the catheter catheterization cavity of the sleeve; 711. a guide-out sleeve fixing bag; 7111. guiding out the sleeve to fix the bag interval; 7112. guiding out sleeve fixing bag salient points; 7113. guiding out a sleeve fixing sac concave point; 712. a notch; 713. a spacer; 714. guiding out external threads of the sleeve; 715. guiding out the sleeve electromagnet; 72. the outer section of the urine outlet of the sleeve is led out; 73. a guide-out sleeve fixing bag fluid channel; 731. a fluid injection port of the guide sleeve fixing bag; 732. a guide-out sleeve fixing bag communication port; 74. drawing wire; 741. drawing an inner section; 742. an outer section of the wire drawing; 75. guiding out the sleeve scale; 76. a guide-out sleeve fixing structure; 8. a one-way valve; 81. a valve body; 811. a valve cavity; 8111. a limit protrusion; 8112. a supporting protrusion; 812. a valve body fluid inlet; 813. a valve body fluid outlet; 82. a valve core; 83. a spring; 9. a syringe; 10. and (5) jackscrews.

Detailed Description

Example 1:

as shown in figure 1, the built-in catheter comprises a catheter 1 and a control valve 4, wherein the catheter 1 is made of thermoplastic polyurethane elastomer rubber or polyvinyl chloride material through injection molding, is soft in whole, free of peculiar smell, good in elasticity and good in tissue compatibility. The catheter 1 is in a hollow tubular shape with openings at two ends, the hollow inside of the catheter is a catheter cavity 10, one end of the catheter is provided with a urine inlet 101, the other end of the catheter is provided with a urine outlet 102, and the urine inlet 101, the urine outlet 102 and the catheter cavity 10 are communicated. The catheter 1 is internally arranged in the male physiological urethra 2, and in order to prevent external bacteria from infecting the urinary system in a retrograde way through the outer surface of the tube wall of the catheter 1, the catheter 1 does not penetrate through the whole male physiological urethra 2, and the length of the catheter is smaller than that of the male physiological urethra 2, and particularly is between 9cm and 15 cm. The catheter 1 is conformal to a male physiological urethra 2 and comprises a prostatic part 11 positioned in a male prostatic urethra 21, a membranous part 12 positioned in a male membranous urethra 22, a bulbar part 13 positioned in a male bulbar urethra 23 and a penile part 19 positioned in a male penile urethra 26, wherein the membranous part 12 is positioned between the prostatic part 11 and the bulbar part 13, and the outer diameter of the wall of the membranous part 12 is smaller than the outer diameters of the wall of the prostatic part 11 and the bulbar part 13. The urine inlet 101 of the catheter 1 is positioned in the neck 31 of the bladder or in the cavity 32 of the bladder 3, and the urine inlet 101 is an opening of the catheter cavity 10 arranged on the prostate part 11 of the catheter 1. The urine outlet 102 of the catheter 1 is positioned in the female urethra 26, which urine outlet 102 is an opening of the urinary catheter lumen 10 provided in the penile portion 19 of the catheter 1. Urine in the bladder cavity 32 flows out of the urine outlet 102 from the urine inlet 101 of the catheter 1 through the urine outlet 10 of the catheter cavity.

As shown in fig. 2, the catheter 1 fully utilizes the physiological characteristics of two physiological expansion, one physiological stenosis and one physiological bending in the male urethra 2, namely, the bulbar urethra 23, the prostatic urethra 21, the membranous urethra 22 and the subpubic bending, not only ensures that the catheter 1 is stably fixed in the male urethra 2, but also avoids uncomfortable symptoms such as ischemic injury, bladder 3 spasm and the like caused by long-time pressing of the neck 31 of the human bladder. Specifically, the prostate part 11 of the catheter 1 is provided with a prostate part bulge 111, the prostate part bulge 111 is a point-shaped bump or an annular bulge protruding outwards from the outer surface of the tube wall of the prostate part 11 of the catheter 1, and by reducing the contact area between the outer surface of the tube wall of the prostate part 11 and the inner wall of the prostatic urethra 21, the pressure of the prostate part 11 of the catheter 1 to the inner wall of the prostatic urethra 21 is reduced, and on the other hand, the material is saved, and the processing cost is reduced. The balloon portion 13 of the catheter 1 is provided with a balloon portion bulge 131, the balloon portion bulge 131 is a point-shaped bump or an annular bulge which is outwards protruded from the outer surface of the tube wall of the balloon portion 13 of the catheter 1, and the contact area between the outer surface of the tube wall of the balloon portion 13 and the inner wall of the balloon urethra 23 is reduced, so that the compression of the balloon portion 13 of the catheter 1 to the inner wall of the balloon urethra 23 is reduced, the material is saved, and the processing cost is reduced. Because the subosseous curve is positioned between the internal orifice 24 of the male urethra and the fixing area of the penile zonules, including the proximal sections of the prostatic urethra 21, the membranous urethra 22 and the bulbar urethra 23, the curve angle is about 93 degrees, the catheter 1 fully utilizes the physiological characteristic of the male urethra 2, the catheter 1 positioned between the prostatic bulge 111 and the bulbar bulge 131 is easy to deform and curve, the prostatic bulge 111, the bulbar bulge 131 and the catheter 1 between the prostatic bulge 111 and the bulbar bulge 131 are in a curved dumbbell shape in the male physiological urethra 2, and the curved catheter 1 is beneficial to preventing the catheter 1 from entering the bladder cavity 32 and preventing the catheter 1 from falling out of the urethra 2. As shown in fig. 2, in order to relieve the pressure of the catheter 1 on the male membrane urethra 22 and to prevent the catheter 1 from being displaced back and forth, the membrane portion 12 is provided with a membrane portion recess 121, and the membrane portion recess 121 is a punctiform pit or an annular groove recessed inwards from the outer surface of the wall of the catheter 1.

As shown in fig. 1, 4 and 5, the control valve 4 is provided with a magnetic traction control switch, and for convenience in external control, the control valve 4 is located in the urinary catheterization cavity 10 of the balloon portion 13 of the urinary catheter 1, specifically, is located at the rear end of the balloon portion 13 of the urinary catheter 1, and comprises a positioning magnetic ring 41, a magnetic ball 42, an external magnet 43 and a switch cavity 44 for moving the magnetic ball 42. The positioning magnetic ring 41 is a natural magnet, is hollow and annular, is positioned in the urethral catheterization cavity 10, and attracts the magnetic ball 42 to close the control valve 4 by using the positioning magnetic ring 41. The inner surface of the catheter 1 pipe wall is provided with a containing groove 411 for containing the positioning magnetic ring 41, the positioning magnetic ring 41 is conformally fixed in the containing groove 411, and the containing groove 411 is an annular groove with the inner surface of the catheter 1 pipe wall concave inwards. The magnetic ball 42 is an iron block, is in the shape of a solid ball, and is positioned in the switch cavity 44. The external magnet 43 is a natural magnet or an electromagnetic device, and is located outside the human body, and the external magnet 43 attracts the magnetic ball 42 outside the human body, so that the magnetic ball 42 is displaced inside the switch cavity 44, and the closed state of the control valve 4 is released. The switch cavity 44 is a section of the urinary catheter cavity 10 of the ball portion 13 of the urinary catheter 1, one end of the switch cavity is provided with a switch cavity inlet 441, the other end of the switch cavity is provided with a switch cavity outlet 442, and the inner surfaces of the wall of the urinary catheter 1 positioned at the switch cavity inlet 441 and the switch cavity outlet 442 are protruded towards the pipe diameter center direction, so that the inner diameters of the switch cavity inlet 441 and the switch cavity outlet 442 are smaller than the average inner diameter of the switch cavity 44. The positioning magnetic ring 41 is located at the switch cavity outlet 442, the magnetic ball 42 is located in the switch cavity 44, the outer diameter of the magnetic ball 42 is larger than the inner diameters of the switch cavity inlet 441 and the switch cavity outlet 442, and a gap 443 allowing urine to pass through is reserved between the magnetic ball 42 and the switch cavity 44. The magnetic ball 42 is moved towards the switch cavity outlet 442 under the magnetic attraction of the positioning magnetic ring 41, the outer surface of the magnetic ball 42 is in sealing contact with the switch cavity outlet 442, the switch cavity outlet 442 is plugged, the control valve 4 is closed by plugging the switch cavity outlet 442, and urine entering from the urine inlet 101 is prevented from flowing to the urine outlet 102 through the control valve 4. When the patient needs to urinate, the magnetic ball 42 is attracted by the magnetic force of the external magnet 43 to move towards the direction deviating from the switch cavity outlet 442, the closing of the control valve 4 is released, and urine entering from the urine inlet 101 flows to the urine outlet 102 through the gap 443 between the switch cavity 44 and the magnetic ball 42. By adopting the external control valve 4, not only is autonomous urination realized, but also a plurality of risks existing in continuous drainage of the traditional urethral catheterization device are solved.

Example 2:

as shown in fig. 1, the built-in catheter comprises a catheter 1 and a control valve 4, wherein the catheter 1 is vulcanized by latex or silicone rubber. The catheter 1 is in a hollow tubular shape with openings at two ends, the hollow inside of the catheter is a catheter cavity 10, one end of the catheter is provided with a urine inlet 101, the other end of the catheter is provided with a urine outlet 102, and the urine inlet 101, the urine outlet 102 and the catheter cavity 10 are communicated. The catheter 1 is arranged in the male physiological urethra 2, and the length of the catheter is smaller than that of the male urethra 2, specifically between 10cm and 13 cm. The catheter 1 is conformal to a male physiological urethra 2 and comprises a prostatic part 11 positioned in a male prostatic urethra 21, a membranous part 12 positioned in a male membranous urethra 22 and a bulbar part 13 positioned in a male bulbar urethra 23, wherein the membranous part 12 is positioned between the prostatic part 11 and the bulbar part 13, and the outer diameter of the wall of the membranous part 12 is smaller than the outer diameters of the wall of the prostatic part 11 and the bulbar part 13. Specifically, the length of the prostate part 11 of the catheter 1 is 3-4cm, and the maximum circumference diameter of the outer surface of the catheter wall is 4.5cm; the length of the membrane part 12 of the catheter 1 is 1.5-2cm, and the maximum circumference of the outer surface of the catheter wall is 2.7cm; the length of the spherical part 13 of the catheter 1 is 4-5cm, and the maximum circumference of the outer surface of the catheter wall is 3.3-3.6 cm. The urine inlet 101 of the catheter 1 is positioned in the bladder cavity 32 of the bladder 3, and the inner urethral orifice 24 of the bladder neck 31 is relatively narrow, so that the outer diameter of the wall of the catheter 1 positioned at the urine inlet 101 is smaller than the average outer diameter of the wall of the catheter 1 in order to enable the urine inlet 101 of the catheter 1 to smoothly pass through the bladder neck 31. The urine outlet 102 of the catheter 1 is positioned in the male bulbar urethra 23, and urine in the bladder cavity 32 flows out of the urine outlet 102 from the urine inlet 101 of the catheter 1 through the urine outlet 10.

As shown in fig. 1, the catheter 1 fully utilizes the physiological characteristics of two physiological expansion, one physiological stenosis and one physiological bending in the male urethra 2, namely, the bulbar urethra 23, the prostatic urethra 21, the membranous urethra 22 and the subpubic bending, so that the catheter 1 is stably fixed in the male urethra 2, and uncomfortable symptoms such as ischemic injury, bladder 3 spasm and the like caused by long-time pressing of the human bladder neck 31 are avoided. Specifically, the prostatic portion 11 of the catheter 1 is provided with prostatic protrusions 111 and the balloon portion 13 of the catheter 1 is provided with balloon protrusions 131. The prostatic bulge 111 is a shuttle-shaped bulge formed by outwards bulging the tube wall of the prostatic part 11 of the catheter 1, and is adapted to the prostatic urethra 21 of a male. The bulbar bulge 131 is a spherical bulge formed by outwards bulging the wall of the bulbar portion 13 of the catheter 1 and is adapted to the male bulbar urethra 23. As shown in fig. 6, alternatively, the prostatic bulge 111 is a cylindrical bulge formed by bulging the wall of the prostatic portion 11 of the catheter 1 outwards, and is adapted to the prostatic urethra 21 of a male. The bulbar bulge 131 is a cylindrical bulge formed by outwards bulging the wall of the bulbar portion 13 of the catheter 1 and is adapted to the male bulbar urethra 23. The membranous urethra 22 is positioned between the prostatic urethra 21 and the bulbar urethra 23, the membranous urethra 22 is the narrowest part except for the external orifice 25 of the urethra, and the stenosed membranous urethra 22 prevents the prostatic bulge 111 of the prostatic part 11 of the urinary catheter 1 positioned in the prostatic urethra 21 from sliding into the membranous urethra 22, thereby preventing the urinary catheter 1 from falling out of the male urethra 2. Likewise, the narrow membrane urethra 22 prevents the balloon bulge 131 of the balloon portion 13 of the urinary catheter 1 located in the balloon urethra 23 from sliding into the membrane urethra 22 and thus prevents the urinary catheter 1 from sliding into the bladder cavity 32. Because the subosseous curve is positioned between the internal orifice 24 of the male urethra and the fixing area of the penile zonules, including the proximal sections of the prostatic urethra 21, the membranous urethra 22 and the bulbar urethra 23, the curve angle is about 93 degrees, the catheter 1 fully utilizes the physiological characteristics of the male urethra 2, the catheter 1 positioned between the prostatic bulge 111 and the bulbar bulge 131 is easy to deform and curve, the prostatic bulge 111, the bulbar bulge 131 and the catheter 1 positioned between the prostatic bulge 111 and the bulbar bulge 131 are in a curved dumbbell shape in the male physiological urethra 2, and the curved catheter 1 is beneficial to preventing the catheter 1 from entering the bladder cavity 32 and preventing the catheter 1 from falling out of the urethra 2. In addition, since the male membranous urethra 22 is relatively narrow, it is difficult to bend the catheter 1 when passing through the membranous urethra 22, and the catheter 1 between the prostatic bulge 111 and the bulbar bulge 131 is easy to deform and bend, which is more beneficial for the catheter 1 to pass through the membranous urethra 22. To further solve the difficult problem of the catheter 1 passing through the membrane urethra 22, the membrane portion 12 is of an elongated tubular shape, the elongated tubular membrane portion 12 being more prone to deformation and bending, as shown in fig. 1. In order to relieve the pressure of the catheter 1 on the male membranous urethra 22, the membranous part 12 is provided with membranous part depressions 121, and the membranous part depressions 121 are in the shape of inward concave arcs of inward depressions of the wall of the catheter 1. In order to facilitate connection and fixation between the catheter 1 and the external connection component, the external connection component is a device for assisting the catheter 1 to guide in or guide out the male urethra 2, as shown in fig. 15 and 21, the inner surface of the catheter wall, near the urine outlet 102, of the catheter 1 is provided with a catheter protrusion 103 and a catheter groove 104, the catheter protrusion 103 is an annular protrusion protruding outwards from the inner surface of the catheter 1, the catheter groove 104 is an annular groove recessed inwards from the inner surface of the catheter wall, the catheter protrusions 103 and the catheter groove 104 are alternately arranged, the catheter protrusions 103 are in concave-convex fit with the concave structure on the external connection component, and the catheter groove 104 is in concave-convex fit with the convex structure on the external connection component. As shown in fig. 16 and 22, in another scheme, a catheter convex point 105 and a catheter concave point 106 are arranged on the inner surface of the catheter 1 near the urine outlet 102, the catheter convex point 105 is a point convex point protruding outwards from the inner surface of the catheter 1, the catheter concave point 106 is a point concave point sinking inwards from the inner surface of the catheter 1, the catheter convex point 105 is in concave-convex fit with a concave structure on the external part, and the catheter concave point 106 is in concave-convex fit with a convex structure on the external part.

The traditional indwelling balloon catheter and the built-in catheter are subjected to a comparison test, and discomfort is brought to a patient when the indwelling balloon catheter and the built-in catheter are subjected to indwelling catheterization.

The experimental method comprises the following steps:

in the group of 50 men, 25 men use the traditional indwelling balloon catheter, and the other 25 men use the built-in catheter, the catheter is respectively indwelled for 3 to 22 days, and discomfort brought to a patient during indwelling catheterization is observed.

Experimental results:

25 men used a conventional indwelling balloon catheter with 10 cases of discomfort in 3d and 15 cases of discomfort in 22 d. Discomfort symptoms: 1. 15 cases of urgent urination, urethral pain and lower abdomen suffocation. 2. Obvious lower abdomen distention, urethral pain, urgent urination accompanied by dysphoria, increased heart rate and increased blood pressure in 6 cases. 3. There were 4 cases of bleeding urine.

In addition, 25 men use the built-in catheter, no uncomfortable symptoms exist in 3d, and 1 uncomfortable case appears in 22 d. Discomfort symptoms: dysphoria and heart rate increase by 1 case.

Conclusion of experiment:

under the test condition, the discomfort of the patient caused by the traditional indwelling air bag catheter is obviously higher than that caused by the built-in catheter, and particularly, the urinary bladder neck of a human body is pressed to cause bladder spasm and urethral compression, so that the patient suffers from urethral pain and discomfort, and the patient feels about to urinate.

Alternatively, as shown in fig. 3, in order to smoothly guide the catheter 1 into the male urethra 2 and avoid damage to the urethra 2, the prostatic bulge 111 and the bulbar bulge 131 are adjustable filling type capsules which are thin films and fixedly and hermetically connected with the outer surface of the catheter 1 pipe wall through medical-grade adhesive, and are made of silicon rubber or latex material through vulcanization. The catheter 1 is characterized in that a prostate bulge fluid channel 112 is arranged in the catheter wall, one end of the prostate bulge fluid channel 112 is provided with a prostate bulge communication port 1122 for communicating with the inner cavity of the balloon body of the prostate bulge 111, the prostate bulge communication port 1122 is an opening on the catheter wall of the prostate part 11 of the catheter 1, the other end of the prostate bulge fluid channel 112 is provided with a prostate bulge fluid injection port 1121 at the bottom end of the balloon part 13 of the catheter 1, and the prostate bulge fluid injection port 1121, the prostate bulge communication port 1122 and the prostate bulge fluid channel 112 are communicated. As shown in fig. 3, the prostate protrusion fluid injection port 1121 is provided with a one-way valve 8, the one-way valve 8 is in sealing connection with the prostate protrusion fluid injection port 1121, and the one-way valve 8 allows fluid to enter the bladder cavity of the prostate protrusion 111 through the prostate protrusion fluid injection port 1121 via the prostate protrusion fluid channel 112, and prevents the fluid in the bladder cavity of the prostate protrusion 111 from flowing back through the prostate protrusion fluid injection port 1121 via the prostate protrusion fluid channel 112. Similarly, a balloon protrusion fluid channel 132 is arranged inside the wall of the catheter 1, one end of the balloon protrusion fluid channel 132 is provided with a balloon protrusion communication port 1322 for communicating with the inner cavity of the balloon body of the balloon protrusion 131, the balloon protrusion communication port 1322 is an opening arranged on the wall of the balloon portion 13 of the catheter 1, the other end of the balloon protrusion fluid channel 132 is provided with a balloon protrusion fluid injection port 1321 at the bottom end of the balloon portion 13 of the catheter 1, and the balloon protrusion fluid injection port 1321, the balloon protrusion communication port 1322 and the balloon protrusion fluid channel 132 are communicated. The balloon bulge fluid injection port 1321 is provided with a one-way valve 8, the one-way valve 8 is in sealing connection with the balloon bulge fluid injection port 1321, the one-way valve 8 allows fluid to enter the inner cavity of the balloon bulge 131 through the balloon bulge fluid injection port 1321 and through the balloon bulge fluid passage 132, and prevents the fluid in the inner cavity of the balloon bulge 131 from flowing back through the balloon bulge fluid injection port 1321 through the balloon bulge fluid passage 132. As shown in fig. 28, the check valve 8 includes a valve body 81, a valve core 82 and a spring 83, wherein the valve body 81 is made of polyvinyl chloride material by injection molding, and is formed by joining left and right parts. The valve body 81 has a tubular shape with both open ends and a hollow interior, and the hollow interior thereof has a valve cavity 811, one end of which has a valve body fluid inlet 812 and the other end of which has a valve body fluid outlet 813. The valve core 82 is located in a valve cavity 811 of the valve body 81, the valve core 82 is made of polyvinyl chloride material by injection molding, a limiting protrusion 8111 for limiting displacement of the valve core 82 is arranged in the valve cavity 811, and a supporting protrusion 8112 for supporting the valve core 82 is arranged in the valve cavity 811. The spring 83 is located between the valve element 82 and the limit boss 8111, and has a resetting effect on the valve element 82. When fluid is injected into the inner cavity of the balloon body of the balloon portion bulge 131 or the prostate portion bulge 111 through the check valve 8, the fluid flows to the valve body fluid outlet 813 through the valve body fluid inlet 812 through the valve cavity 811, the valve core 82 controlled by the spring 83 is jacked up by the fluid pressure, after the injection of the fluid is stopped, the pressure disappears, the valve core 82 is reset by the elasticity of the spring 83, and the backflow of the fluid is closed. For convenience of operation, the injection tube 9 is hollow and tubular with two open ends, one end of the injection tube 9 is respectively in sealing connection with the prostatic bulge fluid injection port 1121 and the bulbar bulge fluid injection port 1321, and the other end extends out of the external urethral orifice 25.

In the use process, before the catheter 1 is led into the male urethra 2, one end of the injection tube 9 is respectively in sealing connection with the prostate bulge fluid injection port 1121 and the bulb bulge fluid injection port 1321 in advance; after the catheter 1 is guided to the correct position, fluid is injected into the inner cavity of the balloon of the prostatic bulge 111 through the prostatic bulge fluid channel 112 by the injection tube 9, the outer contour of the balloon of the prostatic bulge 111 is in a shuttle shape after filling and expanding and is suitable for the male prostatic urethra 21, fluid is injected into the inner cavity of the balloon bulge 131 through the balloon bulge fluid channel 132 by the injection tube 9, and the outer contour of the balloon bulge 131 is in a sphere shape after filling and expanding and is suitable for the male bulbar urethra 23; after the catheter 1 is stably fixed in the male urethra 2, the syringe 9 is pulled slightly forcibly outward of the urethra orifice 25 to separate from the prostatic bulge fluid inlet 1121 and the bulbar bulge fluid inlet 1321, respectively, and the syringe 9 is removed from the male urethra 2.

As shown in fig. 1, 4 and 5, the control valve 4 is controlled by a magnetic traction control switch, so that the control valve 4 is controlled in vitro, the smoothness of urine passing through the control valve 4 is ensured, and the control valve 4 is positioned in the urethral catheterization cavity 10 of the bulge 131 of the bulb part of the urethral catheter 1 and comprises a positioning magnetic ring 41, a magnetic ball 42, an external magnet 43 and a switch cavity 44 for the movement of the magnetic ball 42. The positioning magnetic ring 41 is a natural magnet, is hollow and annular, is positioned in the urethral catheterization cavity 10, and attracts the magnetic ball 42 by the positioning magnetic ring 41 to close the control valve 4. The inner surface of the catheter 1 pipe wall is provided with a containing groove 411 for containing the positioning magnetic ring 41, the positioning magnetic ring 41 is conformally fixed in the containing groove 411, and the containing groove 411 is an annular groove recessed in the inner surface of the catheter 1 pipe wall. The magnetic ball 42 is a natural magnet, is in a hollow ball shape, and is positioned in the switch cavity 44, and the hollow ball-shaped magnetic ball 42 has light weight and is easier to move and control. Because bacteria are easy to grow on the surface of the magnetic ball 42, a layer of metal film with antibacterial performance, specifically one of Au, ag, zn or Sn, is coated on the surface of the magnetic ball 42, and the metal film is fixed on the surface of the magnetic ball 42 by adopting a chemical bonding technology. The metal film has wide physical bactericidal effect and strong killing effect on escherichia coli, pseudomonas aeruginosa and staphylococcus aureus in urine. The external magnet 43 is an electromagnet, and is located outside the human body, the magnetic pole of the external magnet 43 is changed by changing the current direction, the external magnet 43 is utilized to attract the magnetic ball 42 outside the human body, so that the magnetic ball 42 is displaced inside the switch cavity 44, and the closing of the control valve 4 is released. The catheter 1 is characterized in that the catheter cavity 10 with the spherical bulge 131 of the spherical part 13 is a switch cavity 44, one end of the switch cavity 44 is provided with a switch cavity inlet 441, the other end of the switch cavity is provided with a switch cavity outlet 442, and the switch cavity inlet 441 and the switch cavity outlet 442 are respectively positioned at two ends of the catheter cavity 10 with the spherical bulge 131 of the catheter 1. The inner diameters of the switch cavity inlet 441 and the switch cavity outlet 442 are smaller than the average inner diameter of the switch cavity 44, the positioning magnetic ring 41 is positioned at the switch cavity inlet 441, the magnetic ball 42 is positioned in the switch cavity 44, the outer diameter of the magnetic ball 42 is larger than the inner diameters of the switch cavity inlet 441 and the switch cavity outlet 442, and a gap 443 allowing urine to pass through is reserved between the magnetic ball 42 and the switch cavity 44. When the patient needs to urinate, the magnetic ball 42 is attracted by the magnetic force of the external magnet 43 to move towards the direction deviating from the inlet 441 of the switch cavity, the closing of the control valve 4 is released, and urine entering from the urine inlet 101 flows to the urine outlet 102 through the gap 443 between the switch cavity 44 and the magnetic ball 42. When urination is completed, the magnetic pole of the external magnet 43 is changed by changing the current direction, the magnetic ball 42 is displaced towards the opening and closing cavity inlet 441 under the magnetic force repulsion of the external magnet 43 and the magnetic force attraction of the positioning magnetic ring 41, the outer surface of the magnetic ball 42 is in sealing contact with the opening and closing cavity inlet 441, and the control valve 4 is closed by sealing the opening and closing cavity inlet 441, so that urine entering from the urine inlet 101 is prevented from flowing to the urine outlet 102 through the control valve 4. Alternatively, when urination, the external magnet 43 is electrified, the external magnet 43 generates magnetism after the electrification, the external magnet 43 attracts the magnetic ball 42, the magnetic ball 42 displaces towards the direction deviating from the inlet 441 of the switch cavity under the attraction of the magnetic force of the external magnet 43, and the closing of the control valve 4 is released; urination is completed, the external magnet 43 is powered off, the external magnet 43 is demagnetized after the power off, the external magnet 43 does not attract the magnetic ball 42 after the power off, the magnetic ball 42 is attracted only by the magnetic force of the positioning magnetic ring 41, and moves towards the direction of the switch cavity inlet 441, and the control valve 4 is closed by blocking the switch cavity inlet 441. Thus, the consumption of electric power of the external magnet 43 can be reduced, and the utilization rate of electric power can be improved. By adopting the external control valve 4, not only is autonomous urination realized, but also a plurality of risks existing in continuous drainage of the traditional urethral catheterization device are solved.

As shown in fig. 6, 7 and 8, the catheter further comprises a monitoring portion 5, the monitoring portion 5 is externally wrapped with a soft shell 58, the whole shell 58 is in a rectangular parallelepiped shape with round corners, the shell 58 is made of medical grade natural rubber or silicone rubber by vulcanization, and the shell 58 is divided into an upper portion and a lower portion and is fixedly connected with the upper portion through medical grade adhesive in a sealing mode. As shown in fig. 11, the bottom end of the housing 58 is connected with the urine inlet 101 end of the catheter 1 through a flexible tube wall 582, two ends of the flexible tube wall 582 are respectively adhered and fixed with the bottom end of the housing 58 and the top end of the urine inlet 101 of the catheter 1 by using medical-grade adhesive, the flexible tube wall 582 is in a film shape, is vulcanized and made of silicone rubber or latex materials, and has the advantages of softness, no peculiar smell, good elasticity and good tissue compatibility. The flexible tube wall 582 is provided with a flexible tube wall opening 5821, and urine in the bladder cavity 32 flows from the flexible tube wall opening 5821 to the urine inlet 101 of the catheter 1 and enters the urinary catheter cavity 10. The flexible tube wall 582 is soft and easy to deform, so that the resistance of urine in the bladder cavity 32 flowing into the urine inlet 101 of the catheter 1 through the flexible tube wall opening 5821 is reduced, and the smoothness of the urine in the bladder cavity 32 flowing into the urine inlet 101 of the catheter 1 is ensured. As shown in fig. 7 and 10, alternatively, the bottom end of the housing 58 and the top end of the urine inlet 101 of the catheter 1 are connected by two flexible laces 581, and specifically, the flexible laces 581 are adhered and fixed together by medical-grade adhesive, and are made of silicone rubber or latex material through vulcanization. A flexible lacing gap 5811 is arranged between the flexible lacing 581 and the flexible lacing 581, and urine in the bladder cavity 32 flows from the flexible lacing gap 5811 to the urine inlet 101 of the catheter 1 and enters the urine guiding cavity 10. The flexible lacing 581 is soft and easy to deform, so that the resistance of urine flowing into the urine inlet 101 of the catheter 1 through the flexible lacing gap 5811 in the bladder cavity 32 is reduced, and the smoothness of the urine flowing into the urine inlet 101 of the catheter 1 is ensured. The monitoring portion 5 is located within the bladder cavity 32 of the bladder 3 and includes a pressure sensor 51, a temperature sensor 52, a processor 53, a wireless transmission module 54, and a power source 55. The pressure sensor 51 is a piezoresistive pressure sensor, and is configured to monitor urine pressure data in the bladder cavity 32 in real time, and transmit the monitored pressure data to the processor 53. In order to ensure that the data monitored by the pressure sensor 51 are not affected by urine itself, blood clots in urine and stones in urine, the surface of the pressure sensor 51 is coated with a silica gel coating with shore hardness of 0 HA. The temperature sensor 52 is a thermal resistance type temperature sensor, and is configured to monitor the temperature data of urine in the bladder cavity 32 in real time, and transmit the monitored temperature data to the processor 53. The processor 53 processes the pressure data detected by the pressure sensor 51 and the temperature data detected by the temperature sensor 52, and transmits the processed pressure data and temperature data to the external display device 59 through the wireless transmission module 54. The wireless transmitting module 54 is bluetooth or WIFI. The display device 59 is used to display data parameters and instructions for execution generated by the processor 53 and to instruct the healthcare worker and patient to urinate. In addition, the display device 59 may also be provided with a wireless transmitting module 54, and the wireless transmitting module 54 is used for uploading data to a data end of a hospital or a patient for doctors and scientific researchers to analyze and study. The power supply 55 is a button battery or a rechargeable battery, and supplies power to the monitoring portion 5. As shown in fig. 9, in another solution, the monitoring portion 5 further includes a wireless charging module 56, where the wireless charging module 56 includes an in-vivo receiving component 561 and an in-vitro charging component 562, where the in-vivo receiving component 561 is located inside the monitoring portion 5, the in-vitro charging component 562 is located outside the human body, and the in-vivo receiving component 561 receives electromagnetic waves emitted by the in-vitro charging component 562 to charge the power supply 55, and in a wireless charging manner, that is, charging is convenient, and continuous power supply of the monitoring portion 5 is ensured.

As shown in fig. 4, in order to facilitate the processing and manufacturing of the molded product of the catheter 1, the catheter 1 comprises a catheter front section 14 and a catheter rear section 15, the catheter front section 14 is hollow and tubular with two open ends, an annular boss 142 protruding into the catheter cavity 10 is arranged on the inner surface of the catheter wall of the catheter front section 14, an annular groove 141 for accommodating the front end of the catheter rear section 15 is arranged on the inner surface of the catheter wall of the catheter front section 14 at a position close to the rear, and an accommodating groove 411 for accommodating the positioning magnetic ring 41 is formed by inwards recessing the surface of the annular groove 141. The rear section 15 of the catheter is in a hollow tubular shape with openings at two ends, the front end of the rear section 15 of the catheter is in an inverted funnel shape, the front end of the rear section 15 of the catheter is inserted into the annular groove 141 at the rear end of the front section 14 of the catheter, and the rear section 15 of the catheter is adhered and fixed together through medical-grade adhesive, and meanwhile, the positioning magnetic ring 41 is sealed in the accommodating groove 411, so that the positioning magnetic ring 41 is prevented from being contacted with urine. The catheter cavity 10 from the annular boss 142 of the catheter front section 14 to the front end of the catheter rear section 15 forms a switch cavity 44, the switch cavity inlet 441 is positioned at the annular boss 142 of the catheter front section 14, and the switch cavity outlet 442 is positioned at the front end of the catheter rear section 15. The urine inlet 101 of the catheter 1 is positioned at the top end of the front section 14 of the catheter, and the urine outlet 102 of the catheter 1 is positioned at the tail end of the rear section 15 of the catheter.

Alternatively, as shown in fig. 6, in order to facilitate the processing and manufacturing of the molded product of the catheter 1, the catheter 1 includes a first catheter section 16, a second catheter section 17 and a third catheter section 18, the first catheter section 16 is hollow and tubular with two open ends, an annular cavity 161 for accommodating the front end of the second catheter section 17 is provided on the inner surface of the rear end wall of the first catheter section 16, and the surface of the annular cavity 161 is recessed inwards to form an accommodating groove 411 for accommodating the positioning magnetic ring 41. The second section 17 of the catheter is hollow and tubular, the two ends of the second section 17 of the catheter are open, the second section 17 of the catheter is in an inverted funnel shape, the front end of the second section 17 of the catheter is inserted into the annular concave cavity 161 at the rear end of the first section 16 of the catheter, the second section and the first section are adhered and fixed together through medical-grade adhesives, and meanwhile, the positioning magnetic ring 41 is sealed in the accommodating groove 411 to prevent the positioning magnetic ring 41 from contacting urine. The third section 18 of the catheter is in a hollow tubular shape with openings at two ends, the third section 18 of the catheter is in an inverted funnel shape, the front end of the third section 18 of the catheter is accommodated at the rear end of the second section 17 of the catheter, and the third section 18 of the catheter and the second section are adhered and fixed together through medical-grade adhesives. The catheter lumen 10 between the catheter second section 17 and the catheter third section 18 forms a switching lumen 44, the switching lumen inlet 441 being located at the front end of the catheter second section 17 and the switching lumen outlet 442 being located at the front end of the catheter third section 18. The urine inlet 101 of the catheter 1 is positioned at the top end of the first section 16 of the catheter, and the urine outlet 102 of the catheter 1 is positioned at the tail end of the third section 18 of the catheter.

Example 3:

as shown in fig. 12, 13 and 14, an introducer sheath 6 is provided for assisting in introducing a urinary catheter into the interior of a male urethra 2. The guide sleeve 6 is made of thermoplastic polyurethane elastomer rubber or polyvinyl chloride material by injection molding or is made of silicone rubber or latex material by vulcanization, is soft in whole, free of peculiar smell and good in elasticity, and has good tissue compatibility. The guiding sleeve 6 is a tube with two open ends and hollow inside, the inside of the guiding sleeve is a urine guiding cavity 61, one end of the guiding sleeve is provided with a urine inlet 611, the other end of the guiding sleeve is provided with a urine outlet 612, and the urine inlet 611, the urine outlet 612 and the urine guiding cavity 61 are communicated. In use, the introducing sleeve 6 is pre-introduced into the catheter 1, and comprises an introducing sleeve inner section 62 positioned in the catheter 1 urinary cavity 10, an introducing sleeve outer urine outlet section 63 positioned outside the urinary catheter 1 urine outlet 102, and an introducing sleeve outer urine inlet section 64 positioned outside the urinary catheter 1 urine inlet 101, wherein the urine inlet 611 is positioned outside the urinary catheter 1 urine inlet 101, the urine inlet 611 is an opening of the urine introducing cavity 61 arranged on the introducing sleeve outer urine inlet section 64, the urine outlet 612 is positioned outside the urinary catheter 1 urine outlet 102, and the urine outlet 612 is an opening of the urine introducing cavity 61 arranged on the introducing sleeve outer urine outlet section 63. In order to accurately position the catheter 1, the outer surface of the catheter wall of the catheter inlet outer section 64 is provided with an inflatable catheter positioning bag 641, the catheter positioning bag 641 is thin-film and is vulcanized by silicone rubber or latex, the catheter positioning bag 641 is fixedly and hermetically connected with the outer surface of the catheter wall of the catheter inlet outer section 64 through a medical-grade adhesive, and the outer contour of the inflated catheter positioning bag 641 is spherical. As shown in fig. 12, the urine inlet 611 is located at the top end or the bottom end of the catheter positioning bag 641, a catheter positioning bag fluid channel 66 is provided inside the catheter wall of the catheter 6, one end of the catheter positioning bag fluid channel 66 is provided with a catheter positioning bag communication port 662 for communicating with the inner cavity of the catheter positioning bag 641, the catheter positioning bag communication port 662 is an opening on the catheter wall of the catheter urine inlet outer section 64, the other end of the catheter positioning bag fluid channel 66 is provided with a catheter positioning bag fluid injection port 661 at the catheter urine outlet outer section 63, and the catheter positioning bag fluid injection port 661, the catheter positioning bag communication port 662 and the catheter positioning bag fluid channel 66 are communicated. The one-way valve 8 is arranged on the fluid injection port 661 of the positioning bag of the introducing sleeve, the one-way valve 8 is connected with the fluid injection port 661 of the positioning bag of the introducing sleeve in a sealing way, the one-way valve 8 allows fluid to enter the inner cavity of the positioning bag 641 of the introducing sleeve through the fluid injection port 661 of the positioning bag of the introducing sleeve through the fluid passage 66 of the positioning bag of the introducing sleeve, and prevents the fluid in the inner cavity of the positioning bag 641 of the introducing sleeve from flowing back from the fluid injection port 661 of the positioning bag of the introducing sleeve through the fluid passage 66 of the positioning bag of the introducing sleeve. As shown in fig. 28, the check valve 8 includes a valve body 81, a valve core 82, and a spring 83, wherein the valve body 81 is made of polyvinyl chloride material by injection molding, and is formed by joining left and right parts. The valve body 81 has a tubular shape with both open ends and a hollow interior, and the hollow interior thereof has a valve cavity 811, one end of which has a valve body fluid inlet 812 and the other end of which has a valve body fluid outlet 813. The valve core 82 is located in a valve cavity 811 of the valve body 81, the valve core 82 is made of polyvinyl chloride material by injection molding, a limiting protrusion 8111 for limiting displacement of the valve core 82 is arranged in the valve cavity 811, and a supporting protrusion 8112 for supporting the valve core 82 is arranged in the valve cavity 811. The spring 83 is located between the valve element 82 and the limit boss 8111, and has a resetting effect on the valve element 82. When fluid is injected into the inner cavity of the guide sleeve positioning bag 641 through the check valve 8, the fluid flows to the valve body fluid outlet 813 through the valve body fluid inlet 812 through the valve cavity 811, the valve core 82 controlled by the spring 83 is jacked up by the fluid pressure, after the fluid injection is stopped, the pressure disappears, the valve core 82 is reset by the elastic force of the spring 83, and the fluid is prevented from flowing back. Valve element 82 controlled by spring 83 is jacked by jackscrew 10 and fluid flows back through valve cavity 811 through valve body fluid outlet 813 to valve body fluid inlet 812.

In order to fix the introducing sleeve 6 with the inner surface of the catheter 1 wall and prevent the introducing sleeve 6 from falling out of the catheter 1, the outer surface of the inner catheter wall section 62 of the introducing sleeve urinary catheter cavity is provided with an introducing sleeve fixing structure 68, and the introducing sleeve fixing structure 68 is detachably connected with the inner surface of the catheter 1 wall. As shown in fig. 12, 13 and 14, the introducing sleeve fixing structure 68 is an inflatable introducing sleeve fixing bag 621 disposed on the outer surface of the inner wall of the catheter lumen section 62 of the introducing sleeve, and is made of silicone rubber or latex by vulcanization, and the introducing sleeve fixing bag 621 is fixedly matched with the inner surface of the catheter 1 by deformation extrusion after filling. The fixed bag 621 of the leading-in sleeve is in a film shape and is positioned on the outer surface of the pipe wall of the inner section 62 of the urethral catheterization cavity of the leading-in sleeve, and the fixed bag 621 of the leading-in sleeve is fixedly and hermetically connected with the outer surface of the pipe wall of the inner section 62 of the urethral catheterization cavity of the leading-in sleeve through medical-grade adhesive. In order to make the connection between the fixed bag 621 of the leading-in sleeve and the inner surface of the catheter 1 tube wall more firm, the outline of the fixed bag 621 of the leading-in sleeve is cylindrical after filling, and the friction force between the fixed bag 621 of the leading-in sleeve and the inner surface of the catheter 1 tube wall is increased by increasing the contact area between the fixed bag 621 of the leading-in sleeve and the inner surface of the catheter 1 tube wall. In another scheme, the inner surface of the catheter 1 pipe wall is provided with anti-skid grains, and the anti-skid grains are uneven grains for increasing friction force on the inner surface of the catheter 1 pipe wall. Of course, the inner surface of the catheter 1 wall can also be frosted or sandblasted, so that the friction force of the inner surface of the catheter 1 wall is increased. As shown in fig. 12, an inlet cannula fixed bag fluid channel 65 is provided inside the wall of the inlet cannula 6, one end of the inlet cannula fixed bag fluid channel 65 is provided with an inlet cannula fixed bag communication port 652 for communicating with the inner cavity of the inlet cannula fixed bag 621, the inlet cannula fixed bag communication port 652 is an opening provided on the wall of the inlet cannula urinary catheterization cavity inner section 62, the other end of the inlet cannula fixed bag fluid channel 65 is provided with an inlet cannula fixed bag fluid injection port 651 at the outlet urine outlet outer section 63 of the inlet cannula, and the inlet cannula fixed bag fluid injection port 651, the inlet cannula fixed bag communication port 652 and the inlet cannula fixed bag fluid channel 65 are communicated. The one-way valve 8 is arranged on the fluid injection port 651 of the leading cannula fixing bag, the one-way valve 8 is in sealing connection with the fluid injection port 651 of the leading cannula fixing bag, the one-way valve 8 allows fluid to enter the inner cavity of the leading cannula fixing bag 621 through the fluid injection port 651 of the leading cannula fixing bag and the fluid in the inner cavity of the leading cannula fixing bag 621 is prevented from flowing back through the fluid injection port 651 of the leading cannula fixing bag through the fluid passage 65 of the leading cannula fixing bag.

To further prevent the introducer sheath fastening balloon 621 from escaping from the urinary catheter 1 urinary catheter cavity 10, said introducer sheath fastening balloon 621 is positioned in the urinary catheter cavity 10 between the balloon portion 13 of the urinary catheter 1 and the control valve 4, as shown in fig. 14. Because the membrane portion 12 of the urinary catheter 1 is in an elongated tubular shape, the outer diameter of the membrane portion 12 is smaller than the outer diameter of the balloon portion 13, the elongated membrane portion 12 prevents the introducer sheath fastening balloon 621 located in the urinary lumen 10 between the balloon portion 13 of the urinary catheter 1 and the control valve 4 from sliding into the membrane portion 12, and because the inner diameter of the switch lumen inlet 441 of the control valve 4 is smaller than the average inner diameter of the switch lumen 44, the control valve 4 prevents the introducer sheath fastening balloon 621 located in the urinary lumen 10 between the balloon portion 13 of the urinary catheter 1 and the control valve 4 from sliding out of the control valve 4. As shown in fig. 14, in another embodiment, the fixing bladder 621 of the introducing sleeve is located in the cavity 10 of the prostatic bulge 111 of the prostatic portion 11 of the catheter 1, and the prostatic bulge 111 is a shuttle-shaped bulge formed by outwards bulging the wall of the prostatic portion 11, and the inner diameters of two ends of the cavity 10 of the prostatic bulge 111 are smaller than the inner diameter of the middle part of the cavity 10 of the prostatic bulge 111, so that the fixing bladder 621 of the introducing sleeve located in the cavity 10 of the prostatic bulge 111 of the prostatic portion 11 of the catheter 1 is prevented from being separated from the two ends of the cavity 10 of the prostatic bulge 111. As shown in fig. 15, in another embodiment, a plurality of inflatable fixed bags 621 of the catheter are disposed on the outer surface of the inner wall of the catheter section 62 of the catheter, and the plurality of fixed bags 621 of the catheter are arranged alternately, a fixed bag space 6211 of the catheter is left between the fixed bags 621 of the catheter and the fixed bags 621 of the catheter, after filling, the fixed bags 621 of the catheter are embedded into the grooves 104 of the catheter, and the protrusions 103 of the catheter are embedded into the fixed bags space 6211 of the catheter. The concave-convex matching of the fixed bag 621 of the leading-in sleeve and the groove 104 of the catheter, the interval 6211 of the fixed bag of the leading-in sleeve and the convex-concave matching of the protrusion 103 of the catheter make the connection between the outer surface of the inner section 62 of the urethral catheterization cavity of the leading-in sleeve and the inner surface of the wall of the urethral catheter 1 more firm, and prevent the leading-in sleeve 6 from falling out of the urethral catheterization cavity 10 of the urethral catheter 1. As shown in fig. 16, in another scheme, the outer surface of the inner wall of the catheter cavity section 62 of the introducing sleeve is provided with an inflatable introducing sleeve fixing bag 621, the introducing sleeve fixing bag 621 is provided with an introducing sleeve fixing bag convex point 6212 and an introducing sleeve fixing bag concave point 6213, the introducing sleeve fixing bag convex point 6212 is a point convex point protruding outwards from the outer surface of the inner wall of the introducing sleeve fixing bag 621, the introducing sleeve fixing bag concave point 6213 is a point concave inwards from the outer surface of the inner wall of the introducing sleeve fixing bag 621, the introducing sleeve fixing bag convex point 6212 is embedded into the catheter concave point 106, the catheter convex point 105 is embedded into the introducing sleeve fixing bag concave point 6213, the introducing sleeve fixing bag convex point 6212 is matched with the concave convex of the catheter concave point 106, and the connecting between the outer surface of the inner wall of the catheter cavity section 62 of the introducing sleeve and the inner wall of the catheter 1 is firmer, and the introducing sleeve 6 is prevented from falling out of the catheter 1 cavity 10.

In the use process, before the catheter 1 is introduced into the male urethra 2, the inner section 62 of the urinary catheterization cavity of the catheter 1 is led into the urinary catheterization cavity 10 of the catheter 1 in advance, the outer section 64 of the urinary catheterization inlet of the catheter 1 is positioned outside the urinary inlet 101 of the catheter 1, the outer section 63 of the urinary outlet of the urinary catheterization sleeve is positioned outside the urinary outlet 102 of the catheter 1, fluid is injected into the inner cavity of the urinary catheter fixing bag 621 through the fluid injection port 651 of the fluid injection port of the urinary catheter fixing bag 65 of the urinary catheter fixing bag, the urinary catheter fixing bag 621 is inflated, and the inner surface of the catheter 1 is detachably connected with the inner surface of the catheter fixing bag 621 after the inflation. When the catheter 1 is introduced into the male urethra 2, external force is applied to drive the outer section 63 of the urine outlet of the introducing sleeve to enable the introducing sleeve 6 to move towards the interior of the male urethra 2, meanwhile, the catheter 1 is driven to move, so that the catheter 1 enters the male urethra 2 through the outer urethral orifice 25, after the urine inlet 101 of the catheter 1 is positioned in the bladder neck 31 or the bladder cavity 32, urine in the bladder cavity 32 flows to the urine outlet 612 through the urine inlet 611 of the introducing sleeve 6 through the flexible pipe wall opening 5821 or the flexible lacing gap 5811, at the moment, the catheter 1 is introduced into the male urethra 2 for 2cm to 3cm again, after the fluid inlet 661 of the introducing sleeve positioning bag is completely positioned in the bladder cavity 32, fluid is injected into the inner cavity of the introducing sleeve positioning bag 641 through the fluid channel 66 of the introducing sleeve positioning bag, the introducing sleeve positioning bag is inflated, at the moment, the flexible pipe wall 582 or the flexible lacing 581 positioned outside the urine inlet 101 is inflated and deformed along with the inflation of the introducing sleeve positioning bag 641, after the inflation, the external force is larger than the inner diameter of the introducing sleeve 641, the external force is applied to prove that the external force is applied to the inner diameter of the urine inlet 641, and the urine outlet is positioned outside the bladder 1, and the urine outlet is positioned outside the bladder cavity 31, and the external force is proved to be positioned to be in the right direction when the external force is applied to the direction, and the position of the introducing sleeve is proved to be outside the bladder 1, and the urine outlet is proved to be outside the inner, and the position, and the urine is positioned outside the urine, and the urine is positioned outside and is shown. After the urinary catheter 1 is introduced into the male urethra 2, the fluid in the inner cavities of the fixed bladder 621 and the positioning bladder 641 of the introducing sleeve is discharged, and then the external force is applied to drive the outer section 63 of the urine outlet of the introducing sleeve to move towards the outer direction of the urethra outer opening 25, so that the introducing sleeve 6 is taken out from the male urethra 2.

As shown in fig. 17, in another embodiment, the outer surface of the inner section 62 of the urinary catheter lumen of the introducing sleeve is provided with an external thread 622 of the introducing sleeve, the inner surface of the inner section 1 of the urinary catheter near the urine outlet 102 is provided with an internal thread 107 which is matched with the external thread 622 of the introducing sleeve of the inner section 62 of the urinary catheter lumen of the introducing sleeve, and the introducing sleeve 6 is fixed inside the urinary catheter lumen 10 of the urinary catheter 1 by the matching of the external thread 622 and the internal thread 107 of the introducing sleeve. In use, before the catheter 1 is introduced into the male urethra 2, the external thread 622 of the catheter is fixedly matched with the internal thread 107 of the catheter 1 in a rotating way by the inner section 62 of the catheter guiding cavity of the guiding sleeve. When the catheter 1 is introduced into the male urethra 2, the external force is applied to drive the outer section 63 of the urine outlet of the introduction sleeve to enable the introduction sleeve 6 to move towards the male urethra 2, and meanwhile, the catheter 1 is driven to move, so that the catheter 1 is introduced into the male urethra 2 through the outer urethra outlet 25. After the urinary catheter 1 is introduced into the male urethra 2, the external thread 622 of the urinary catheter inner section 62 of the introducing sleeve is disengaged from the internal thread 107 of the urinary catheter 1, and then the external force is applied to drive the external section 63 of the urinary outlet of the introducing sleeve to displace towards the external direction of the external urethral orifice 25, so that the introducing sleeve 6 is taken out from the male urethra 2.

As shown in fig. 18, in another embodiment, the guiding sleeve fixing structure 68 is a guiding sleeve electromagnet 623 is disposed inside the wall of the guiding sleeve inner section 62, the guiding sleeve electromagnet 623 generates magnetic force when current is applied, an iron ring 108 that is attracted to the guiding sleeve electromagnet 623 of the guiding sleeve inner section 62 near the urine outlet 102 is disposed inside the wall of the catheter 1, and the iron ring 108 is in a ring shape, and the guiding sleeve 6 is fixed inside the catheter 1 and the catheter 10 by the attraction of the guiding sleeve electromagnet 623 and the iron ring 108. Before the catheter 1 is introduced into the male urethra 2, the power supply is connected with the guide sleeve electromagnet 623 at the guide sleeve inner section 62, the guide sleeve electromagnet 623 generates magnetic force, and the guide sleeve electromagnet 623 and the inner wall iron ring 108 of the catheter 1 are attracted with each other, so that the guide sleeve 6 and the catheter 1 are fixed together. When the catheter 1 is introduced into the male urethra 2, the external force is applied to drive the outer section 63 of the urine outlet of the introduction sleeve to enable the introduction sleeve 6 to move towards the male urethra 2, and meanwhile, the catheter 1 is driven to move, so that the catheter 1 is introduced into the male urethra 2 through the outer urethra outlet 25. After the urinary catheter 1 is introduced into the male urethra 2, the power supply of the electromagnet 623 of the introducing sleeve is cut off, at the moment, the magnetism of the electromagnet 623 of the introducing sleeve is disappeared, the outer surface of the wall of the introducing sleeve 6 is separated from the inner surface of the wall of the urinary catheter 1, and the outer section 63 of the urine outlet of the introducing sleeve is driven to displace towards the outer direction of the urethra outer opening 25 by applying external force, so that the introducing sleeve 6 is taken out from the male urethra 2.

As shown in fig. 17, the outer surface of the wall of the introducing cannula 6 is provided with introducing cannula graduations 67, and the introducing cannula graduations 67 are located in the length direction of the introducing cannula 6 and are indicative structures of the outer surface of the wall of the introducing cannula 6, and have the functions of marking and measuring. When the guide sleeve 6 assists the urinary catheter 1 to be guided into the male urethra 2, the guide sleeve graduations 67 of the guide sleeve 6 at the position of the urethra external orifice 25 are read, the position of the guide sleeve 6 at the position of the urethra external orifice 25 is marked, the distance of the guide sleeve 6 guided into the urethra 2 is measured, and the guide catheter 1 is guided to the correct position.

Example 4:

as shown in fig. 19, a delivery sheath 7 is provided, the delivery sheath 7 being adapted to assist in the delivery of the urinary catheter from within the male urethra 2. The guiding-out sleeve 7 is in a slender tubular shape, is made of one material of thermoplastic polyurethane elastomer rubber and polyvinyl chloride by injection molding or is made of one material of silicone rubber and latex by vulcanization, is soft in whole, has no peculiar smell, has good elasticity and has good tissue compatibility. When in use, the guiding sleeve 7 is required to be guided into the catheter 1 through the urethra external orifice 25, and comprises the guiding sleeve catheterization cavity inner section 71 positioned in the catheterization cavity 10 of the catheter 1 and the guiding sleeve urine outlet external section 72 positioned outside the urine outlet 102 of the catheter 1. In order to fix the guiding sleeve 7 with the inner surface of the catheter 1 wall and prevent the guiding sleeve 7 from falling out of the catheter 1, a guiding sleeve fixing structure 76 is arranged on the guiding sleeve 7 wall, and the guiding sleeve fixing structure 76 is detachably connected with the inner surface of the catheter 1 wall.

As shown in fig. 19 and 20, the guiding-out sleeve fixing structure 76 is an inflatable guiding-out sleeve fixing bag 711 arranged on the outer surface of the inner wall of the guiding-out sleeve catheterization cavity section 71, the guiding-out sleeve fixing bag 711 is made of one material of silicone rubber or latex by vulcanization, and the guiding-out sleeve fixing bag 711 is fixedly matched with the inner surface of the inner wall of the catheter 1 through deformation extrusion after filling. The guiding-out sleeve fixing bag 711 is in a film shape and is positioned on the outer surface of the pipe wall of the guiding-out sleeve catheterization cavity inner section 71, and the guiding-out sleeve fixing bag 711 is fixedly and hermetically connected with the outer surface of the pipe wall of the guiding-out sleeve catheterization cavity inner section 71 through a medical-grade adhesive. In order to make the connection between the guiding-out sleeve fixing bag 711 and the inner surface of the catheter 1 tube wall more firm, the outer contour of the guiding-out sleeve fixing bag 71 after filling is cylindrical, and the friction force between the guiding-out sleeve fixing bag 71 and the inner surface of the catheter 1 tube wall is increased by increasing the contact area between the outer surface of the guiding-out sleeve fixing bag 71 and the inner surface of the catheter 1 tube wall. In another scheme, the inner surface of the catheter 1 pipe wall is provided with anti-skid grains, and the anti-skid grains are uneven grains for increasing friction force on the inner surface of the catheter 1 pipe wall. Of course, the inner surface of the catheter 1 is frosted or sandblasted, so that the friction force of the inner surface of the catheter 1 is increased. As shown in fig. 19, a fluid channel 73 of a fixed bag of the guiding cannula is provided inside the wall of the guiding cannula 7, one end of the fluid channel 73 of the fixed bag of the guiding cannula is provided with a communicating port 732 of the fixed bag of the guiding cannula for communicating with the inner cavity of the guiding cannula 711, the communicating port 732 of the fixed bag of the guiding cannula is an opening on the wall of the inner section 71 of the guiding cannula's catheterization cavity, the other end of the fluid channel 73 of the guiding cannula is provided with a fluid injection port 731 of the fixed bag of the guiding cannula at the outer section 72 of the urine outlet of the guiding cannula, and the fluid injection port 731 of the fluid of the fixed bag of the guiding cannula, the communicating port 732 of the fixed bag of the guiding cannula and the fluid channel 73 of the fixed bag of the guiding cannula are communicated. The fluid injection port 731 of the guiding-out sleeve fixing bag is provided with a one-way valve 8, the one-way valve 8 is in sealing connection with the fluid injection port 731 of the guiding-out sleeve fixing bag, the one-way valve 8 allows fluid to enter the inner cavity of the guiding-out sleeve fixing bag 711 through the fluid injection port 731 of the guiding-out sleeve fixing bag through the fluid passage 73 of the guiding-out sleeve fixing bag, and prevents fluid in the inner cavity of the guiding-out sleeve fixing bag 711 from flowing out through the fluid injection port 731 of the guiding-out sleeve fixing bag through the fluid passage 73 of the guiding-out sleeve fixing bag. The one-way valve 8 comprises a valve body 81, a valve core 82 and a spring 83, wherein the valve body 81 is made of polyvinyl chloride material by injection molding and is formed by combining a left part and a right part. The valve body 81 has a tubular shape with both open ends and a hollow interior, and the hollow interior thereof has a valve cavity 811, one end of which has a valve body fluid inlet 812 and the other end of which has a valve body fluid outlet 813. The valve core 82 is located in a valve cavity 811 of the valve body 81, the valve core 82 is made of polyvinyl chloride material by injection molding, a limiting protrusion 8111 for limiting displacement of the valve core 82 is arranged in the valve cavity 811, and a supporting protrusion 8112 for supporting the valve core 82 is arranged in the valve cavity 811. The spring 83 is located between the valve element 82 and the limit boss 8111, and has a resetting effect on the valve element 82. When fluid is injected into the inner cavity of the guide sleeve fixing bag 711 through the check valve 8, the fluid flows to the valve body fluid outlet 813 through the valve body fluid inlet 812 through the valve cavity 811, the valve core 82 controlled by the spring 83 is jacked up by the fluid pressure, after the fluid injection is stopped, the pressure disappears, the valve core 82 is reset by the elasticity of the spring 83, and the backflow of the fluid is closed. Valve element 82 controlled by spring 83 is jacked by jackscrew 10 and fluid flows back through valve cavity 811 through valve body fluid outlet 813 to valve body fluid inlet 812.

As shown in fig. 21, in another scheme, a plurality of inflatable guiding-out sleeve fixing bags 711 are arranged on the outer surface of the tube wall of the guiding-out sleeve catheterization cavity inner section 71, a plurality of guiding-out sleeve fixing bags 711 are alternately arranged, guiding-out sleeve fixing bag intervals 7111 are reserved between the guiding-out sleeve fixing bags 711 and the guiding-out sleeve fixing bags 711, the guiding-out sleeve fixing bags 711 are inflated and then embedded into the catheter groove 104, and the catheter protrusions 103 are embedded into the guiding-out sleeve fixing bag intervals 7111. The guide sleeve fixing bag 711 is matched with the concave-convex part of the catheter groove 104, and the guide sleeve fixing bag interval 7111 is matched with the concave-convex part of the catheter protrusion 103, so that the connection between the outer surface of the inner wall of the guide sleeve catheter cavity section 71 and the inner surface of the catheter 1 wall is firmer, and the guide sleeve 7 is prevented from falling out of the catheter 1 catheter cavity 10. As shown in fig. 22, in another scheme, an inflatable guiding cannula fixing bag 711 is disposed on the outer surface of the inner wall of the guiding cannula cavity 71, the guiding cannula fixing bag 711 is provided with guiding cannula fixing bag protruding points 7112 and guiding cannula fixing bag recessed points 7113, the guiding cannula fixing bag protruding points 7112 are protruding point protruding points protruding outwards from the outer surface of the inner wall of the guiding cannula fixing bag 711, the guiding cannula fixing bag protruding points 7113 are protruding points protruding inwards from the outer surface of the inner wall of the guiding cannula fixing bag 711, the guiding cannula fixing bag protruding points 7112 are embedded into the catheter recessed points 106, the catheter protruding points 105 are embedded into the guiding cannula fixing bag protruding points 7113, the guiding cannula fixing bag protruding points 7112 are matched with the concave-convex portions of the catheter recessed points 106, the guiding cannula fixing bag protruding points 7113 are matched with the concave-convex portions of the catheter protruding points 105, the inner wall outer surface of the guiding cannula cavity 71 and the inner wall of the catheter 1 are connected more firmly, and the guiding cannula 6 is prevented from falling out of the catheter 1 and the catheter cavity 10.

Before the catheter 1 is led out of the male urethra 2, external force is applied to drive the outer section 72 of the urine outlet of the guide sleeve to enable the guide sleeve 7 to move towards the male urethra 2, the inner section 71 of the urine outlet of the guide sleeve is led into the urine guide cavity 10 of the catheter 1 through the outer urethra orifice 25, and the outer section 72 of the urine outlet of the guide sleeve is positioned outside the urine outlet 102 of the catheter 1. When the catheter 1 is led out of the male urethra 2, fluid is injected into the inner cavity of the guide sleeve fixing bag 711 through the guide sleeve fixing bag fluid injection port 731 and the guide sleeve fixing bag fluid channel 73, the guide sleeve fixing bag 711 is inflated, the guide sleeve fixing bag 711 is detachably connected with the inner surface of the wall of the catheter 1 after being inflated, and external force is applied to drive the outer section 72 of the guide sleeve outlet to move towards the outer direction of the urethra outer port 25, and meanwhile, the catheter 1 is driven to move, so that the catheter 1 is led out of the male urethra 2. After the urinary catheter 1 is led out of the male urethra 2, the fluid in the cavity of the guide sleeve fixing bag 711 is discharged, and the guide sleeve 7 is taken out of the urinary catheter 1 and the urinary catheter cavity 10.

As shown in fig. 26, in another scheme, the outer surface of the inner section 71 of the urinary catheterization cavity of the guiding catheter is provided with an outer thread 714 of the guiding catheter, and the inner surface of the inner section 1 of the urinary catheterization cavity near the urine outlet 102 is provided with an inner thread 107 matched with the outer thread 714 of the guiding catheter of the inner section 71 of the urinary catheterization cavity, and the guiding catheter 7 is fixed inside the urinary catheterization cavity 10 of the urinary catheter 1 through the matching of the outer thread 714 of the guiding catheter and the inner thread 107, so that the guiding catheter 7 is prevented from falling out of the urinary catheterization cavity 10 of the urinary catheter 1. Before the catheter 1 is led out of the male urethra 2, external force is applied to drive the outer section 72 of the urine outlet of the guide sleeve to enable the guide sleeve 7 to move towards the urethra 2, the inner section 71 of the urine outlet cavity of the guide sleeve is led into the urine guide cavity 10 of the catheter 1 through the outer urethra orifice 25, and the outer section 72 of the urine outlet of the guide sleeve is positioned outside the urine outlet 102 of the catheter 1. When the catheter 1 is led out of the male urethra 2, the external thread 714 of the guiding sleeve is rotationally and fixedly matched with the internal thread 107 of the catheter 1, and then external force is applied to drive the outer section 72 of the urine outlet of the guiding sleeve to move towards the outer direction of the urethra outer opening 25, and meanwhile, the catheter 1 is driven to move, so that the catheter 1 is led out of the male urethra 2 through the urethra outer opening 25. After the urinary catheter 1 is led out of the male urethra 2, the external thread 714 of the lead-out sleeve is disengaged from the internal thread 107 of the urinary catheter 1, and the lead-out sleeve 7 is taken out of the urinary catheter 1 and the urinary catheter cavity 10.

As shown in fig. 27, in another scheme, the guiding-out sleeve fixing structure 76 is provided with a guiding-out sleeve electromagnet 715 inside the inner section 71 of the guiding-out sleeve urinary catheter cavity, the guiding-out sleeve electromagnet 715 generates magnetic force when current is applied, an iron ring 108 which is attracted with the guiding-out sleeve electromagnet 715 is arranged inside the inner section 1 of the urinary catheter cavity near the urine outlet 102, the iron ring 108 is in a ring shape, the guiding-out sleeve electromagnet 715 and the iron ring 108 are attracted with each other, so that the guiding-out sleeve 7 is fixed inside the urinary catheter cavity 10 of the urinary catheter 1, and the guiding-out sleeve 7 is prevented from falling out from the urinary catheter cavity 10. Before the catheter 1 is led out of the male urethra 2, external force is applied to drive the outer section 72 of the urine outlet of the guide sleeve to enable the guide sleeve 7 to move towards the urethra 2, the inner section 71 of the urine outlet cavity of the guide sleeve is led into the urine guide cavity 10 of the catheter 1 through the outer urethra orifice 25, and the outer section 72 of the urine outlet of the guide sleeve is positioned outside the urine outlet 102 of the catheter 1. When the catheter 1 is led out of the male urethra 2, the leading-out sleeve electromagnet 715 is powered on, the leading-out sleeve electromagnet 715 generates magnetic force, and the leading-out sleeve electromagnet 715 and the iron ring 108 are attracted with each other, so that the leading-out sleeve 7 and the catheter 1 are fixed together, the outer section 72 of the urine outlet of the leading-out sleeve is driven to move towards the outer direction of the urethra outer opening 25 by applying external force, and meanwhile, the catheter 1 is driven to move, and the catheter 1 is led out of the male urethra 2 through the urethra outer opening 25. After the urinary catheter 1 is led out of the male urethra 2, the power supply of the leading-out sleeve electromagnet 715 is cut off, at the moment, the magnetism of the leading-out sleeve electromagnet 715 disappears, the outer surface of the wall of the leading-out sleeve 7 is separated from the inner surface of the wall of the urinary catheter 1, and the leading-out sleeve 7 is taken out of the urinary catheter 1 from the urinary catheter cavity 10.

As shown in fig. 23, 24 and 25, in another embodiment, the guiding cannula 7 is a hollow pipe, a plurality of longitudinal elongated slits 712 are provided on the front wall of the guiding cannula inner section 72, the slits 712 are uniformly arranged along the circumference of the guiding cannula 7, the guiding cannula fixing structure 76 includes a spacing portion 713 between the slits 712 and the slits 712, and a wire drawing 74 disposed inside the guiding cannula 7, the wire drawing 74 is in a shape of an elongated tube, and is made of one of thermoplastic polyurethane elastomer rubber and polyvinyl chloride by injection molding. One end of the wire drawing 74 is fixedly connected with the front end of the inner section 71 of the urine guiding cavity of the guiding-out sleeve through medical-grade adhesive, and the other end of the wire drawing 74 extends out of the outer section 72 of the urine guiding-out sleeve and comprises an inner wire drawing section 741 positioned in the hollow space of the guiding-out sleeve 7 and an outer wire drawing section 742 positioned outside the outer section 72 of the urine guiding-out sleeve.

Before the catheter 1 is led out of the male urethra 2, external force is applied to drive the outer section 72 of the urine outlet of the leading-out sleeve to enable the leading-out sleeve 7 to move towards the urethra 2, the inner section 71 of the urine outlet of the leading-out sleeve is led into the urine guiding cavity 10 of the catheter 1 through the outer urethra orifice 25, the outer section 72 of the urine outlet of the leading-out sleeve is positioned outside the urine outlet 102 of the catheter 1, and the outer section 742 of the wire drawing is positioned outside the outer section 72 of the urine outlet of the leading-out sleeve. When the catheter 1 is led out of the male urethra 2, the external force is applied to drive the wire drawing outer section 742 to move towards the external direction of the urethra outer opening 25, meanwhile, the opposite external force is applied to the outer section 72 of the urine outlet opening of the leading-out sleeve, the wire drawing 74 is prevented from driving the outer section 72 of the urine outlet opening of the leading-out sleeve to move, at the moment, the interval part 713 between the notches 712 of the inner section 71 of the urine outlet sleeve of the catheterization cavity 10 is expanded in an umbrella shape, the external force is applied to drive the wire drawing outer section 742 to move towards the external direction of the urethra outer opening 25, when resistance is felt, the interval part 713 which is proved to be expanded in an umbrella shape is embedded into the catheter groove 104, the catheter protrusion 103 on the inner surface of the catheter 1 is clamped and fixedly expanded, and finally, the external force is applied to drive the wire drawing outer section 742 to move towards the external direction of the urethra outer opening 25, and meanwhile, the catheter 1 is driven to move, and the catheter 1 is led out of the male urethra 2.

As shown in fig. 24, the outer surface of the wall of the guiding sleeve 7 is provided with guiding sleeve scales 75, and the guiding sleeve scales 75 are located in the length direction of the guiding sleeve 7 and have the functions of marking and measuring for the indication structure of the outer surface of the wall of the guiding sleeve 7. When the export sleeve 7 is led into the catheter 1 through the urethra external orifice 25, the export sleeve scale 75 is read out, the export sleeve 7 is positioned at the urethra external orifice 25, the position of the export sleeve 7 positioned at the urethra external orifice 25 is marked, the distance of the export sleeve 7 led into the urethra 2 is measured, and the inner section 71 of the urethral catheterization cavity of the export sleeve is positioned in the urethral catheterization cavity 10 of the catheter 1 in the urethra 2.

Claims

1. A built-in urinary catheter, comprising:

the urine catheter (1), the urine catheter (1) is in a hollow tubular shape with openings at two ends, the hollow inside of the urine catheter is a urine guiding cavity (10), one end of the urine catheter is provided with a urine inlet (101), the other end of the urine catheter is provided with a urine outlet (102), the urine catheter (1) is positioned in a male physiological urethra (2) and comprises a prostate part (11) positioned in a male prostate part urethra (21), a membrane part (12) positioned in a male membrane part urethra (22) and a bulb part (13) positioned in a male bulbar urethra (23), the urine inlet (101) of the urine catheter (1) is positioned in a bladder neck (31) or a bladder cavity (32), and the urine outlet (102) is positioned in a male bulbar urethra (23) or in a male penis part urethra (26); a control valve (4), wherein the control valve (4) is positioned in a urinary catheterization cavity (10) of the urinary catheter (1) between a ball part (13) of the urinary catheter (1) and a urine outlet (102), and when the control valve (4) is in an open state, urine entering from the urine inlet (101) flows to the urine outlet (102) through the control valve (4) and is discharged from an external urethral orifice (25); the prostate part (11) is characterized in that at least one outwards-protruding prostate bulge (111) is arranged on the outer surface of the tube wall of the prostate part (11), at least one outwards-protruding bulb bulge (131) is arranged on the outer surface of the tube wall of the bulb part (13), the prostate bulge (111) and the bulb bulge (131) and the catheter (1) between the two are bent dumbbell-shaped in the physiological urethra (2) of a male, the catheter (1) is fixed in the urethra (2) to prevent the catheter (1) from being displaced, at least one part of the outer surface of the tube wall of the membrane part (12) of the catheter (1) is inwards recessed to form a membrane part recess (121), the membrane part recess (121) is positioned in the narrow male membrane part urethra (22), and the membrane part recess (121) is positioned between the prostate bulge (111) and the bulb bulge (131) of the catheter (1) and helps the catheter (1) to bend in the physiological urethra (2) of the male, and interference compression on the urethra (22) is relieved.

2. The built-in catheter according to claim 1, further comprising a monitoring part (5), said monitoring part (5) being connected to the catheter (1) and being located inside the bladder cavity (32), comprising a pressure sensor (51), a temperature sensor (52), a processor (53), a wireless transmission module (54) and a power supply (55).

3. The urinary catheter according to claim 2, in which the monitoring portion (5) is connected to the urinary catheter (1) at the urine inlet (101) by at least two flexible tethers (581) or flexible tube walls (582).

4. A catheter according to claim 2 or 3, wherein the monitoring part (5) further comprises a wireless charging module (56), the wireless charging module (56) comprises an in-vivo receiving part (561) and an in-vitro charging part (562), the in-vivo receiving part (561) is located in the monitoring part (5), the in-vitro charging part (562) is located outside the human body, and the in-vivo receiving part (561) receives electromagnetic waves emitted by the in-vitro charging part (562) for charging the power supply (55).

5. A catheter according to any of claims 1-3, characterized in that the control valve (4) comprises a positioning magnetic ring (41), a magnetic ball (42), an external magnet (43) and a switch chamber (44) for the movement of the magnetic ball (42), the positioning magnetic ring (41) is located inside the catheter chamber (10), the magnetic ball (42) closes the control valve (4) under the magnetic attraction of the positioning magnetic ring (41), and urine entering from the urine inlet (101) cannot flow to the urine outlet (102) through the control valve (4); the external magnet (43) is utilized to attract the magnetic ball (42) in the outside, so that the magnetic ball (42) is displaced in the switch cavity (44), the closing of the control valve (4) is released, and urine entering from the urine inlet (101) flows to the urine outlet (102) through the control valve (4).

6. The urinary catheter as claimed in claim 5, wherein the magnetic ball (42) is provided with a metallic coating having bacteriostatic properties on its surface, said metallic coating being composed of one of Au, ag, zn or Sn.

7. The urinary catheter as claimed in claim 5, wherein the external magnet (43) is an electromagnet, the poles of which external magnet (43) can be changed by changing the direction of the current.

8. A built-in catheter according to any of claims 1-3, characterized in that the inner surface of the catheter wall of the catheter (1) near the urine outlet (102) is provided with annular catheter protrusions (103) and catheter recesses (104), or with punctiform catheter bumps (105) and catheter indentations (106).

9. An introducer sheath for a urinary catheter according to any one of claims 1-8, said introducer sheath (6) being hollow at both ends, said introducer sheath having a lumen (61) for introducing urine, one end of said introducer sheath (6) being provided with a urine inlet (611) and the other end being provided with a urine outlet (612), said introducer sheath (6) comprising an introducer sheath lumen section (62) located within the urinary catheter (1) lumen (10), an introducer sheath outlet outer section (63) located outside the urinary catheter (1) outlet (102) and an introducer sheath inlet outer section (64) located outside the urinary catheter (1) inlet (101), said introducer sheath outlet outer section (63) extending outside the urinary catheter outlet (25), said urine inlet (611) being located outside the urinary catheter (1) inlet (101), said urine outlet (612) being located outside the urinary catheter outlet (25), characterized in that the outer surface of said introducer sheath inlet outer section (64) is provided with an introducer sheath outlet outer section (63) located outside the urinary catheter (1) outlet (102) and an introducer sheath inlet (66) located outside the urinary catheter outlet (25), said introducer sheath (66) being located inside the introducer sheath (641), the other end is provided with a fluid injection opening (661) of a positioning bag of the guiding sleeve at the outer section (63) of the urine outlet of the guiding sleeve, at least one part of the wall of the inner section (62) of the urethral catheterization cavity of the guiding sleeve is provided with a fixing structure (68) of the guiding sleeve, the fixing structure (68) of the guiding sleeve is detachably connected with the inner surface of the wall of the urethral catheter (1), and the fixing structure (68) of the guiding sleeve is detachably connected with the inner surface of the wall of the urethral catheter (1).

10. The introducer sheath according to claim 9, wherein the introducer sheath retaining structure (68) is at least one inflatable introducer sheath retaining bag (621), the introducer sheath retaining bag (621) is located on the outer surface of the inner wall of the introducer sheath catheter lumen (62), an introducer sheath retaining bag fluid channel (65) is provided inside the inner wall of the introducer sheath (6), one end of the introducer sheath retaining bag fluid channel (65) is communicated with the inner cavity of the introducer sheath retaining bag (621), an introducer sheath retaining bag fluid injection port (651) is provided at the outer section (63) of the urine outlet of the introducer sheath, fluid is injected into the inner cavity of the introducer sheath retaining bag (621) through the introducer sheath retaining bag fluid injection port (651), the introducer sheath retaining bag (621) is inflated, and the introducer sheath retaining bag (621) is detachably connected with the inner wall surface of the catheter (1) after inflation.

11. The introducing sleeve according to claim 10, wherein the introducing sleeve fixing bag (621) is filled and then is embedded into the catheter groove (104), and the catheter protrusions (103) arranged on the inner surface of the catheter wall of the catheter (1) are clamped and fixed and filled, and then the top end and the bottom end of the introducing sleeve fixing bag (621) are introduced; the catheter fixing bag (621) is provided with a fixing bag convex point (6212) of the guiding sleeve and a fixing bag concave point (6213) of the guiding sleeve, the fixing bag convex point (6212) of the guiding sleeve is embedded into the concave point (106) of the catheter, and the convex point (105) of the catheter is embedded into the concave point (6213) of the fixing bag of the guiding sleeve, so that the fixing bag (621) of the guiding sleeve is detachably connected with the inner surface of the wall of the catheter (1).

12. The introducer sheath according to claim 9, wherein the introducer sheath securing structure (68) is an introducer sheath external thread (622), the introducer sheath external thread (622) being located on the outer surface of the inner catheter wall of the introducer sheath catheter lumen (62), and the inner catheter wall surface of the catheter (1) being provided with an internal thread (107) for mating with the introducer sheath external thread (622).

13. An introducer sheath according to any one of claims 10 to 12, characterized in that the outer surface of the wall of the introducer sheath (6) is provided with introducer sheath graduations (67).

14. A guiding-out sleeve for a built-in catheter according to any one of claims 1-8, said guiding-out sleeve (7) comprising a guiding-out sleeve inner section (71) located in a catheter lumen (10) of a catheter (1) and a guiding-out sleeve outer section (72) located outside a urine outlet (102) of the catheter (1), said guiding-out sleeve outer section (72) extending outside a urethra outer opening (25), characterized in that at least a part of the wall of said guiding-out sleeve inner section (71) is provided with a guiding-out sleeve fixing structure (76), said guiding-out sleeve fixing structure (76) being detachably connected with the inner surface of the wall of the catheter (1).

15. The exporting cannula according to claim 14, wherein the exporting cannula fixing structure (76) is at least one inflatable exporting cannula fixing bag (711), the exporting cannula fixing bag (711) is located on the outer surface of the inner wall of the exporting cannula catheterization cavity (71), a exporting cannula fixing bag fluid channel (73) is arranged inside the tube wall of the exporting cannula (7), one end of the exporting cannula fixing bag fluid channel (73) is communicated with the inner cavity of the exporting cannula fixing bag (711), a exporting cannula fixing bag fluid injection opening (731) is formed in the outer end (72) of the urine outlet of the exporting cannula, fluid is injected into the inner cavity of the exporting cannula fixing bag (711) through the exporting cannula fixing bag fluid channel (73), the exporting cannula fixing bag (711) is inflated, and the exporting cannula fixing bag (711) is detachably connected with the inner surface of the tube wall of the catheter (1) after inflation.

16. The guiding-out sleeve according to claim 15, wherein the guiding-out sleeve fixing bag (711) is embedded into the catheter groove (104) after being filled, and the catheter bulge (103) arranged on the inner surface of the catheter wall of the catheter (1) is clamped and fixed, and the top end and the bottom end of the guiding-out sleeve fixing bag (711) are fixedly filled; the guiding-out sleeve fixing bag (711) is provided with guiding-out sleeve fixing bag protruding points (7112) and guiding-out sleeve fixing bag concave points (7113), the guiding-out sleeve fixing bag protruding points (7112) are embedded into the catheter concave points (106), the catheter protruding points (105) are embedded into the guiding-out sleeve fixing bag concave points (7113), and the guiding-out sleeve fixing bag (711) is detachably connected with the inner surface of the wall of the catheter (1).

17. The guiding cannula according to claim 14, wherein the guiding cannula (7) is a hollow pipeline, a plurality of longitudinal strip-shaped notches (712) are formed in the front end pipe wall of the guiding cannula (7), the notches (712) are uniformly arranged around the circumference of the pipe wall of the guiding cannula (7), the guiding cannula fixing structure (76) comprises a spacing part (713) between the notches (712) and a wire drawing (74) arranged inside the guiding cannula (7), one end of the wire drawing (74) is connected with the front end of the guiding cannula (7), the other end of the wire drawing (74) extends out of the rear end of the guiding cannula (7), the wire drawing (74) is driven to move towards the outer direction of the rear end of the guiding cannula (7) by applying an external force, the spacing part (713) of the guiding cannula (7) is expanded in an umbrella shape, the spacing part (713) is embedded in the catheter groove (104), and the catheter protrusions (103) arranged on the inner surface of the pipe wall of the catheter (1) are clamped and fixed.

18. Export sleeve according to any of claims 15-17, characterized in that the outer surface of the wall of the export sleeve (7) is provided with export sleeve graduations (75).