Built-in remote control catheter and fixing method, imbedding method and taking-out method thereof

Abstract

The invention discloses a built-in remote control catheter and a fixing method, an imbedding method and a taking-out method thereof.The built-in remote control catheter comprises a built-in catheter body, a catheterization valve and an in-vitro handheld controller, the built-in catheter body is arranged in the urethra, the catheterization valve is arranged in the catheter body, and the in-vitro handheld controller is connected with the built-in remote control catheter body. The in-vitro handheld controller is used for controlling the urine guide valve to be opened or closed in vitro. The built-in urethral catheter provided with the urethral catheterization valve is arranged in the urethra, it is guaranteed that the urethral catheter does not displace in the body and is not exposed outside the urethral orifice, and the urethral catheterization valve is controlled to be opened and closed in vitro, so that the urethral catheterization valve can replace the urethral sphincter of the human body; a patient can determine whether the valve needs to be opened for urination or not according to own requirements while the bladder has a urine storage function, the problems of enuresis and urinary incontinence caused by urinary retention and urethral sphincter closure disability are solved, and an external urine bag does not need to be reserved for storing urine, so that the influence on the life of the patient is small, and the use is convenient. And the probability of urinary tract infection is greatly reduced.

Description

Technical Field

[0001] The present invention belongs to the field of urinary catheters, and particularly relates to an internal remote-controlled urinary catheter and its fixing method, insertion method, and removal method. Background Art

[0002] After urine is produced in the kidneys, it flows into the bladder through the renal calyces, renal pelvis, and ureters. It is temporarily stored in the bladder, and when it reaches a certain volume, it forms a supra-threshold stimulus to the stretch receptors on the bladder wall, triggering the micturition reflex: the bladder contracts, the sphincter relaxes, and the stored urine is discharged out of the body through the urethra.

[0003] The detrusor muscle of the bladder and the internal urethral sphincter are innervated by both the sympathetic and parasympathetic nerves. When the sympathetic nerve is excited, the detrusor muscle of the bladder relaxes, while the urethral sphincter contracts, thus facilitating urine storage. The action of the parasympathetic nerve is opposite to that of the sympathetic nerve. When excited, it can cause the detrusor muscle of the bladder to contract and the internal urethral sphincter to relax, causing urine to be discharged from the bladder.

[0004] The primary micturition reflex center is located in the lumbar and sacral parts of the spinal cord. The cerebral cortex also has a higher center that controls the micturition reflex. It can control and adjust the activities of the primary micturition reflex center in the lumbar and sacral spinal cord and can excite the motor fibers of the pudendal nerve. The external urethral sphincter is innervated by the pudendal nerve. When the pudendal nerve is excited, the external urethral sphincter contracts to prevent urine leakage.

[0005] When there is no urine in the bladder, the pressure on the bladder wall is close to zero. At this time, the excitement of the sympathetic nerve is dominant, and the pudendal nerve is also in an excited state, which is conducive to urine storage. As the urine volume in the bladder gradually increases, the pressure on the bladder wall also gradually increases. When the urine storage volume reaches more than 300 - 400 milliliters, the intravesical pressure rises significantly, stimulating the receptors on the bladder wall. The receptors send impulses to the primary micturition center in the lumbar and sacral spinal cord. At this time, if it is an infant, it will immediately trigger the micturition reflex, that is, the sympathetic nerve and the pudendal nerve are inhibited, while the parasympathetic nerve becomes excited, causing the detrusor muscle of the bladder to contract and the internal urethral sphincter to relax, and the urine enters the urethra. At this time, the urine stimulates the receptors on the urethral tube wall, and the impulse reaches the spinal micturition center, further strengthening its activity (positive feedback effect), causing the external sphincter to open and the urine to be discharged out of the body. The consequence of the inability of the urethral sphincter to close is enuresis and urinary incontinence.

[0006] Urinary retention refers to the pathological state in which urine in the bladder cannot be discharged normally, and it is divided into acute urinary retention and chronic urinary retention. Chronic urinary retention is manifested as difficult urination, weakened urine flow, or increased residual urine volume. Urinary retention not only causes extreme discomfort to patients but may also trigger a series of serious complications, such as over-distension of the bladder, renal function damage, urinary tract infection, and even endanger life.

[0007] The most effective current clinical means for dealing with the above diseases is to insert a urinary catheter for the patient to drain urine, such as Figure 14As shown in the figure, it is a schematic diagram of an existing urinary catheter. Its general operation process is as follows: Insert the urinary catheter into the bladder through the external urethral orifice. After seeing urine, insert it another 5-6 cm. Inject an appropriate amount of sterile water into the balloon, and pull the urinary catheter outward until resistance is encountered. Connect the urinary catheter to a urine bag to store urine. The purpose of injecting water into the balloon is to fix the urinary catheter and prevent it from slipping out of the urethra. Before removing the urinary catheter, the liquid in the balloon should be drawn out with a syringe first. In the existing technical solution of the urinary catheter, a part of the urinary catheter is left outside the body and is externally connected to a urine bag to store urine. Problems with the external part: 1. It brings inconvenience to the patient's movement and causes psychological pressure. 2. It is easy to cause urinary tract and bladder infections. The problem with the internal part is that the opening of the urinary catheter directly leads to the external urine storage bag. The urine secreted by the kidneys enters the bladder and continuously drips into the urine storage bag through the urinary catheter, resulting in the bladder losing its urine storage function. Therefore, an internal remote-controlled urinary catheter and its fixation method, insertion method, and removal method need to be proposed. Summary of the Invention

[0008] The purpose of the present invention is to solve the problems in the background technology and provide an internal remote-controlled urinary catheter, a fixation method, an insertion method, and a removal method.

[0009] The above technical purpose of the present invention is achieved through the following technical solutions: An internal remote-controlled urinary catheter includes an internal urinary catheter, a urinary catheter valve, and an external hand-held controller. The internal urinary catheter is arranged in the urethra, the urinary catheter valve is arranged in the urinary catheter, and the external hand-held controller is used to control the opening or closing of the urinary catheter valve outside the body.

[0010] By placing the internal urinary catheter equipped with a urinary catheter valve in the urethra, the present invention ensures that the urinary catheter does not displace in the body and there is no exposure outside the urethral orifice. The opening and closing of the urinary catheter valve are controlled externally, enabling the urinary catheter valve to replace the urethral sphincter of the human body. While ensuring that the bladder has the urine storage function, the patient can determine whether to open the valve for urination according to their own needs, solving the problems of urinary retention, enuresis, and urinary incontinence caused by the inability of the urethral sphincter to close. At the same time, the urinary catheter does not need to be left outside the body and externally connected to a urine bag to store urine, thus having little impact on the patient's daily life and greatly reducing the probability of causing urinary tract infections.

[0011] The urinary catheter used in the device of the present invention is very short and can be placed at the connection between the bladder and the urethra or at the blocked part of the urethra. Since the urinary catheter is only about 10 centimeters long and there is no exposure outside the patient's urethral orifice, it has little impact on the patient's daily life and greatly reduces the probability of causing urinary tract infections.

[0012] The present invention consists of three parts: 1. A remotely controllable magnetic control valve and its carrier placed in the body; 2. A portable handheld controller outside the body; 3. Special tools for insertion and removal. The special structure and working principle of the valve ensure that problems such as urine leakage and inability to open will not occur. The handheld controller outside the body can open the valve when there is a desire to urinate and close the valve after urination is completed. The consequence of the loss of function of the urethral sphincter is enuresis and urinary incontinence, and the solution is an implantable valve-type catheter. By placing a valve-type catheter at the urinary orifice of the bladder, the patient can remotely control the opening and closing of the valve with a handheld controller outside the body to achieve controllable urine discharge.

[0013] The present invention controls the valve placed in the body by remote control to achieve controllable and smooth urination, and ensures that there is no urine leakage during normal times and the stability of the valve and its carrier in the body, and it will not shift due to its own reasons.

[0014] The urinary catheter valve is a magnetic control valve. A suction seat is formed on the inner side wall of the built-in urinary catheter. A urine discharge hole is formed in the middle of the suction seat. The magnetic control valve is arranged on the urine discharge hole. A magnetic conductive coating is provided on the suction seat and is matched with the magnetic control valve. The magnetic control valve includes a valve cover plate, a permanent magnet, a connecting rod, and a limiting block. The permanent magnet is arranged inside the valve cover plate. A valve limiting seat is arranged in the middle of the urine discharge hole. A support rod is arranged between the valve limiting seat and the suction seat. The urine discharge hole is formed between the two support rods. A valve limiting hole is arranged in the middle of the valve limiting seat. The connecting rod is slidably arranged in the valve limiting hole. The valve cover plate is arranged at the top end of the connecting rod and is located above the suction seat. The limiting block is arranged at the bottom end of the connecting rod and is located below the suction seat. Through the cooperation of the connecting rod and the valve limiting hole, the valve cover plate is kept sliding vertically, and the magnetic control valve is prevented from falling off by the limiting block.

[0015] When the urine volume is small, the magnetic control valve of the present invention mainly relies on the magnetic force between the permanent magnet and the magnetic conductive coating to attract and close. The valve cover plate covers the urine discharge hole to prevent urine from discharging. When urination is needed, the handheld controller outside the body approaches the urinary catheter valve, and uses the magnetic force to push open the valve cover plate of the urinary catheter valve. The urine is discharged through the urinary catheter hole. When the controller is removed, the urinary catheter valve returns to the closed state, thereby realizing the opening and closing of the magnetic control valve.

[0016] Preferably, the upper surfaces of the support rod and the valve limiting seat are both provided with the magnetic conductive coating to increase the magnetic force.

[0017] Preferably, a thin film is coated on the built-in catheter, a lubricant is applied between the thin film and the built-in catheter, the top of the thin film is bonded to the top of the built-in catheter, the bottom end of the thin film is open, and the outside of the thin film is also coated with a lubricant, which can reduce friction and increase the comfort of the patient when inserted. After long-term use, the lubricant on the outside of the thin film is easily absorbed by the human body. And a lubricant is applied between the thin film and the built-in catheter. When the catheter is removed, since the bottom of the thin film is open, the catheter can first withdraw from the body due to the lubricant and then bring out the thin film, which can reduce the pain of the patient when the catheter is removed.

[0018] It further includes an auxiliary locator, and the auxiliary locator includes an auxiliary placement tube, a urine storage bag, and a top block. The auxiliary placement tube is a plastic tube with a hardness greater than that of the built-in catheter and is hollow. The outer diameter of the auxiliary placement tube is smaller than the inner diameter of the built-in catheter. Since a catheter extraction string is provided on the built-in catheter, the outer diameter of the auxiliary placement tube is less than 3 / 4 of the inner diameter of the built-in catheter, ensuring that the auxiliary placement tube can push open the catheter extraction string and enter the position of the magnetic control valve, and does not cause too much deformation of the catheter at the catheter extraction string. The urine storage bag is arranged at the bottom end of the auxiliary placement tube, and the top block is arranged at the top end of the auxiliary placement tube. A circulation hole is formed between the top block and the auxiliary placement tube. The top block is in the shape of a cross, and the outer diameter of the top block is slightly smaller than the inner diameter of the catheter to ensure its smooth entry into the magnetic control valve of the catheter, and the inner diameter of the top block can cover the urine discharge hole of the valve.

[0019] In the present invention, the auxiliary locator is inserted into the built-in catheter and pushed until it cannot be pushed further. At this time, the urine guiding valve is in an open state under the top force of the auxiliary placement tube. Then, the built-in remote control catheter is inserted from the external urethral orifice of the patient, and the built-in remote control catheter is pushed along the urethra slowly with the auxiliary locator. When urine is discharged, it is pushed in about 1 cm further. After no more urine is discharged, the locator is slowly withdrawn, thus completing the insertion of the built-in remote control catheter.

[0020] It further includes a urinary catheter removal mechanism, and the urinary catheter removal mechanism includes a removal auxiliary tube and a removal lock. The removal lock is arranged at the top end of the removal auxiliary tube. The removal lock includes a stainless steel tube, a lock bolt, a connecting shaft, a torsion spring, and a fixing bracket. The stainless steel tube is arranged at the top end of the removal auxiliary tube, the fixing bracket is arranged on the top of the stainless steel tube, the lock bolt is arranged in the middle of the fixing bracket. One end of the lock bolt is a free end, and the other end is rotatably arranged on the connecting shaft. The connecting shaft is fixed on the fixing bracket. The torsion spring is sleeved on the connecting shaft. One end of the torsion spring presses against the lock bolt, and the other end presses against the fixing bracket. A urinary catheter extraction string is arranged at the bottom of the built-in urinary catheter. An endoscope and a light source for facilitating the observation of the top situation are arranged in the stainless steel tube. Wires connecting the endoscope and the light source are led out from the bottom end through a plastic tube. The removal auxiliary tube is a plastic tube with a hardness greater than that of the built-in urinary catheter, an outer diameter smaller than the inner diameter of the built-in urinary catheter, and is hollow.

[0021] In the present invention, a sterile lubricant is evenly applied to the urinary catheter removal mechanism. The locking end of the urinary catheter removal mechanism is slowly pushed into the auxiliary device along the urethra from the external urethral orifice until the lock bolt of the urinary catheter removal mechanism approaches the urinary catheter extraction string. During this period, the position of the lock in the internal urethra can be observed through the endoscope, and the angle between the lock bolt and the urinary catheter extraction string can be observed through the endoscope. Hold the urinary catheter removal mechanism by hand to adjust the angle of the lock bolt until it forms a cross shape with the urinary catheter extraction string. Then continue to slowly push the urinary catheter removal mechanism. Under the pressure of the urinary catheter extraction string, the lock bolt is subjected to a downward pressure from top to bottom, and the lock bolt rotates around the connecting shaft, and the free end sinks, and the lock opens; continue to push. After the pressure disappears, under the action of the elastic force, the lock bolt returns to its original position, and the lock closes. Slowly pull out the urinary catheter removal mechanism until the built-in remote-controlled urinary catheter is completely withdrawn from the body, and the removal of the built-in remote-controlled urinary catheter is completed.

[0022] When the built-in remote-controlled urinary catheter is used for men, its length is 8 - 12 cm. After placement, there is no exposed part outside the body, and it uses the natural curvature of the urethra to play a fixing role.

[0023] A method for inserting the built-in remote-controlled urinary catheter described in claims 1 - 5 includes the following steps: S1. Insert the auxiliary positioning device into the built-in urinary catheter and push it until it can no longer be pushed. At this time, the urinary catheter valve is in an open state under the top force of the placement auxiliary tube. S2. Insert the built-in remote-controlled urinary catheter from the external urethral orifice of the patient, and use the auxiliary positioning device to push the built-in remote-controlled urinary catheter and slowly push it along the urethra. When urine is discharged, push it about 0.8 - 1.1 cm further. S3. After waiting for no more urine to be discharged, slowly pull out the placement auxiliary tube.

[0024] A method for removing the built-in remote-controlled urinary catheter described in claims 1 - 7 includes the following steps: S1, Apply sterile lubricant evenly to the catheter removal mechanism. S2, Insert the auxiliary device slowly along the urethra from the external urethral orifice with the locking end of the catheter removal mechanism until the locking bolt of the catheter removal mechanism approaches the catheter removal string. During this process, the position of the lock reaching the internal urethra can be observed through an endoscope. S3, Observe the angle between the locking bolt and the catheter removal string through the endoscope, and hold the catheter removal mechanism by hand to adjust the angle of the locking bolt until it forms a cross with the catheter removal string. S4, Continue to slowly push the catheter removal mechanism. Under the pressure of the catheter removal string, the locking bolt is subjected to a downward pressure from above, the locking bolt rotates around the connecting shaft, the free end sinks, and the lock opens; continue to push, the removal string slides down from the free end along the locking bolt, the pressure exerted by the removal string on the locking bolt disappears, and under the elastic force, the locking bolt returns to its original position and the lock closes. S5, Slowly pull out the catheter removal mechanism until the built-in remote-controlled catheter is completely withdrawn from the body.

[0025] In summary, the beneficial effects of the present invention are as follows: 1. By placing the built-in catheter equipped with a urinary catheter valve in the urethra, the present invention ensures that the catheter does not shift in the body and there is no exposure outside the urethral orifice. The opening and closing of the urinary catheter valve are controlled externally, enabling the urinary catheter valve to replace the function of the urethral sphincter of the human body. While ensuring that the bladder has the function of storing urine, the patient can determine whether to open the valve for urination according to their own needs, solving the problems of urinary retention and enuresis and urinary incontinence caused by the inability of the urethral sphincter to close. At the same time, the catheter does not need to be indwelled outside the body and connected to a urine bag to store urine, thus having little impact on the patient's daily life and greatly reducing the probability of urinary tract infection. 2. By inserting the auxiliary locator into the built-in catheter and pushing it until it cannot be pushed further, at this time the urinary catheter valve is in the open state under the top force of the auxiliary tube. Then insert the built-in remote-controlled catheter from the external urethral orifice of the patient, and use the auxiliary locator to push the built-in remote-controlled catheter and slowly push it along the urethra. When urine is discharged, push it about 1 cm further. After no more urine is discharged, slowly withdraw the locator to complete the insertion of the built-in remote-controlled catheter. 3. The present invention uniformly applies a sterile lubricant to the catheter removal mechanism. With the locking end of the catheter removal mechanism, it is slowly pushed into the auxiliary device along the urethra from the external urethral orifice until the locking bolt of the catheter removal mechanism approaches the catheter extraction string. During this period, the position of the lock reaching the internal urethra can be observed through an endoscope, and the angle between the locking bolt and the catheter extraction string can be observed through the endoscope. Hold the catheter removal mechanism by hand to adjust the angle of the locking bolt until it forms a cross shape with the catheter extraction string. Continue to slowly push the catheter removal mechanism. Under the pressure of the catheter extraction string, the locking bolt receives a downward pressure from above, the locking bolt rotates around the connecting shaft, the free end sinks, and the lock opens. Continue to push, and the extraction string slides down from the free end of the locking bolt. The pressure exerted by the extraction string on the locking bolt disappears. Under the elastic force, the locking bolt returns to its original position, and the lock closes. Slowly pull out the catheter removal mechanism until the built-in remote-controlled catheter is completely withdrawn from the body, completing the removal of the built-in remote-controlled catheter. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a cross-sectional schematic view of the built-in remote-controlled catheter of the present invention; Figure 2 is a cross-sectional schematic view of the urine drainage valve of the present invention; Figure 3 is a schematic view of urine drainage after the urine drainage valve of the present invention is opened; Figure 4 is a top view schematic diagram among the valve limit seat, the suction seat and the support rod of the present invention; Figure 5 is a top view schematic diagram of the magnetic conductive coating of the present invention; Figure 6 is a left view external schematic diagram of the built-in catheter of the present invention; Figure 7 is a front view external schematic diagram of the built-in catheter of the present invention; Figure 8 is a schematic diagram of the auxiliary locator of the present invention; Figure 9 is the present invention Figure 8 magnified schematic diagram of part A; Figure 10 is a schematic diagram of the catheter removal mechanism of the present invention; Figure 11 is a front view schematic diagram of the catheter removal mechanism of the present invention; Figure 12 is a cross-sectional schematic diagram between the fixing frame and the torsion spring of the present invention; Figure 13 is a cross-sectional schematic diagram between the locking bolt and the torsion spring of the present invention; Figure 14 is a schematic diagram of an existing catheter; Figure 15 is an installation schematic diagram of the catheter in this case. Detailed implementation manners

[0027] The following specific embodiments are only explanations of the present invention and do not limit the present invention. After reading this specification, those skilled in the art can make modifications to these embodiments without creative contributions as needed, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

[0028] The present invention will be described in detail below with reference to the accompanying drawings by way of embodiments.

[0029] Embodiment

[0030] As Figures 1-7 shown in FIGS. 14 and 15, an in - built remote - controlled urinary catheter includes an in - built urinary catheter 1, a urinary catheter valve 2, and an external hand - held controller 3. The main material is a latex hose that is harmless to the human body, elastic, and has stable performance. It can bend along with the urethral structure, and all parts that can contact muscle tissues have no sharp edges and corners, so as not to scratch muscle tissues when being placed and removed, and can also reduce the discomfort of patients. Since most patients with urinary retention are elderly men, the in - built urinary catheter 1 in this case is more suitable for installation in the male urethra. At present, in this case, because the in - built urinary catheter 1 is arranged in the urethra, the urinary catheter valve 2 is arranged in the urinary catheter 1, and the external hand - held controller 3 is used to control the opening or closing of the urinary catheter valve 2 outside the body. The urinary catheter valve 2 is a magnetically - controlled valve 20. A suction seat 10 is formed on the inner side wall of the in - built urinary catheter 1. A urine discharge hole 11 is formed in the middle of the suction seat 10. The magnetically - controlled valve 20 is arranged on the urine discharge hole 11. A magnetic - conductive coating 4 that cooperates with the magnetically - controlled valve 20 is provided on the suction seat 10. The magnetically - controlled valve 20 includes a valve cover plate 201, a permanent magnet 202, a connecting rod 203, and a limit block 204. The permanent magnet 202 is arranged in the valve cover plate 201. A valve limit seat 110 is provided in the middle of the urine discharge hole 11. A support rod 111 is provided between the valve limit seat 110 and the suction seat 10. The urine discharge hole 11 is formed between the two support rods 111. A valve limit hole 112 is provided in the middle of the valve limit seat 110. The connecting rod 203 is slidably arranged in the valve limit hole 112. The valve cover plate 201 is arranged at the top of the connecting rod 203 and above the suction seat 10. The limit block 204 is arranged at the bottom of the connecting rod 203 and below the suction seat 10. The magnetic - conductive coating 4 is provided on the upper surfaces of the support rod 111 and the valve limit seat 110. A thin film 7 is coated outside the in - built urinary catheter 1. A lubricant 71 is coated between the thin film 10 and the in - built urinary catheter 1. The top of the thin film 7 is bonded to the top of the in - built urinary catheter 1, and the bottom end of the thin film 10 is open.

[0031] As Figures 6-7As shown in the figure, the top of the built-in catheter 1 is provided with a catheter orifice 102, which is convenient for urine to flow into the built-in catheter 1.

[0032] As Figures 8-9 shown in the figure, it further includes an auxiliary positioner 5. The auxiliary positioner 5 includes a placement auxiliary tube 51, a urine storage bag 52, and a top block 53. The placement auxiliary tube 51 is a plastic tube with a hardness greater than that of the built-in catheter 1 and is hollow. The outer diameter of the placement auxiliary tube 51 is smaller than the inner diameter of the built-in catheter 1. The urine storage bag 52 is arranged at the bottom end of the placement auxiliary tube 51. The top block 53 is arranged at the top end of the placement auxiliary tube 51. A circulation hole 54 is formed between the top block 53 and the placement auxiliary tube 51. The top block 53 is in the shape of a cross flower.

[0033] As Figures 10-14 shown in the figure, it further includes a catheter removal mechanism 6. The catheter removal mechanism 6 includes a removal auxiliary tube 61 and a removal lock 62. The removal lock 62 is arranged at the top end of the removal auxiliary tube 61. The removal lock 62 includes a stainless steel tube 621, a lock bolt 622, a connecting shaft 623, a torsion spring 624, and a fixing bracket 625. The stainless steel tube 621 is arranged at the top end of the removal auxiliary tube 61. The fixing bracket 625 is arranged at the top of the stainless steel tube 621. The lock bolt 622 is arranged in the middle of the fixing bracket 625. One end of the lock bolt 622 is a free end, and the other end is rotatably arranged on the connecting shaft 623. The connecting shaft 623 is fixed on the fixing bracket 625. The torsion spring 624 is sleeved on the connecting shaft 623. One end of the torsion spring 624 presses against the lock bolt 622, and the other end presses against the fixing bracket 625. The position where the lock bolt 622 is close to the fixing bracket 625 is an arc surface. By installing the torsion spring through holes on the lock bolt 622 and the fixing bracket 625, it is ensured that the lock bolt 622 can be pressed downward around the fixing bracket 625 and can also rebound. At the same time, the lock bolt 622 and the fixing bracket 625 are closer and more firm. The top surface of the stainless steel tube 621, the lock bolt 622, and the fixing bracket 625 are all rounded. The parts that can contact the muscle tissue have no sharp edges and corners, so as not to scratch the muscle tissue during placement and removal, and can also reduce the discomfort of the patient. The bottom of the built-in catheter 1 is provided with a catheter removal string 101, and the catheter removal string 101 is also made of latex material. There is an endoscope and a light source in the stainless steel tube for observing the top situation. The removal auxiliary tube 61 is a plastic tube with a hardness greater than that of the built-in catheter 1, an outer diameter smaller than the inner diameter of the built-in catheter 1, and is hollow.

[0034] A fixing method for the built-in remote control catheter described in claims 1-4. When the built-in remote control catheter is used for men, its length is about 10 cm. After placement, there is no exposed part outside the body, and it uses the natural curvature of the urethra to play a fixing role.

[0035] A method for inserting an internal remote control catheter as described in claims 1-5, comprising the following steps: S1. Insert the auxiliary locator 5 into the internal catheter 1 and push it until it can no longer be advanced. At this time, the urine drainage valve 2 is in an open state under the pushing force of the placement auxiliary tube 51. S2. Insert the internal remote control catheter from the external urethral orifice of the patient, and use the auxiliary locator 5 to push the internal remote control catheter and slowly push it along the urethra. When urine is discharged, push it about 0.8-1.1 cm further. S3. After waiting until no more urine is discharged, slowly withdraw the placement auxiliary tube 51.

[0036] A method for removing an internal remote control catheter as described in claims 1-7, characterized by comprising the following steps: S1. Uniformly apply a sterile lubricant to the catheter removal mechanism 6. S2. Insert the locking end of the catheter removal mechanism 6 from the external urethral orifice and slowly push it along the urethra into the auxiliary device until the locking bolt 622 of the catheter removal mechanism 6 approaches the catheter removal tube string 101. During this period, the position of the lock reaching the internal urethra can be observed through an endoscope. S3. Observe the angle between the locking bolt 622 and the catheter removal tube string 101 through an endoscope, and hold the catheter removal mechanism 6 by hand to adjust the angle of the locking bolt 622 until it forms a cross shape with the catheter removal tube string 101. S4. Continue to slowly push the catheter removal mechanism 6. Under the pressure of the catheter removal tube string 101, the locking bolt 622 is subjected to a downward pressure from above. The locking bolt 622 rotates around the connecting shaft, and the free end sinks, and the lock opens; continue to push, and the catheter removal tube string slides out from the free end along the locking bolt. The pressure exerted by the catheter removal tube string on the locking bolt disappears, and under the elastic force, the locking bolt 622 returns to its original position and the lock closes. S5. Slowly pull out the catheter removal mechanism 6 until the internal remote control catheter is completely withdrawn from the body.

[0037] Working principle

[0038] As Figures 1-13 shown, when the urine volume is small, it mainly relies on the magnetic attraction between the permanent magnet 202 and the magnetic conductive coating 4. The valve cover plate 201 covers the urine discharge hole 11 to prevent urine from being discharged. When urination is required, the external hand-held controller 3 is brought close to the urine drainage valve 2, and the urine drainage valve cover plate 201 is pushed open by magnetic force. Urine is discharged through the urine discharge hole 11. When the external controller is removed, the urine drainage valve 2 returns to the closed state, enabling the urine drainage valve 2 to replace the function of the urethral sphincter of the human body. While ensuring that the bladder has the urine storage function, the patient can determine whether to open the valve for urination according to their own needs. At the same time, the catheter does not need to be left outside the body and connected to a urine bag to store urine, so the impact on the patient's daily life is small, and the probability of causing urinary tract infections is greatly reduced.

Claims

1. An internal remote-controlled urinary catheter, characterized in that: The invention comprises an internal urinary catheter (1), a urinary catheter valve (2), and an external handheld controller (3); the internal urinary catheter (1) is arranged in the urethra, the urinary catheter valve (2) is arranged in the urinary catheter (1), and the external handheld controller (3) is used for externally controlling the opening or closing of the urinary catheter valve (2).

2. The internal remote-controlled urinary catheter according to claim 1, characterized in that: The urinary catheter valve (2) is a magnetically controlled valve (20); a suction seat (10) is formed on the inner side wall of the built-in urinary catheter (1); a urination hole (11) is formed in the middle of the suction seat (10); the magnetically controlled valve (20) is arranged on the urination hole (11); and a magnetically conductive coating (4) that cooperates with the magnetically controlled valve (20) is provided on the suction seat (10).

3. The internal remote-controlled urinary catheter according to claim 2, characterized in that: The magnetically controlled valve (20) comprises a valve cover plate (201), a permanent magnet (202), a connecting rod (203), and a limiting block (204); the permanent magnet (202) is arranged in the valve cover plate (201); a valve limiting seat (110) is arranged in the middle of the urination hole (11); a supporting rod (111) is arranged between the valve limiting seat (110) and the sucked seat (10); the urination hole (11) is formed between the two supporting rods (111); a valve limiting hole (112) is arranged in the middle of the valve limiting seat (110); the connecting rod (203) is slidably arranged in the valve limiting hole (112); the valve cover plate (201) is arranged at the top end of the connecting rod (203) and is located above the sucked seat (10); and the limiting block (204) is arranged at the bottom end of the connecting rod (203) and is located below the sucked seat (10).

4. The internal remote-controlled urinary catheter according to claim 1, characterized in that: The internal urinary catheter (1) is coated with a film (7), a lubricant (71) is applied between the film (7) and the internal urinary catheter (1), the top of the film (7) is bonded to the top of the internal urinary catheter (1), and the bottom of the film (7) is open.

5. The internal remote-controlled urinary catheter according to claim 3, characterized in that: The invention also comprises an auxiliary positioning device (5), the auxiliary positioning device (5) comprising an auxiliary placement tube (51), a urine storage bag (52), and a top block (53); the auxiliary placement tube (51) is a hollow plastic tube having a harderness than the internal urinary catheter (1); the outer diameter of the auxiliary placement tube (51) is smaller than the inner diameter of the internal urinary catheter (1); the urine storage bag (52) is arranged at the bottom end of the auxiliary placement tube (51); the top block (53) is arranged at the top end of the auxiliary placement tube (51); and a flow hole (54) is formed between the top block (53) and the auxiliary placement tube (51).

6. The internal remote-controlled urinary catheter according to claim 3, characterized in that: The invention also comprises a urinary catheter removal mechanism (6), the urinary catheter removal mechanism (6) comprising a removal auxiliary tube (61) and a removal lock buckle (62), the removal lock buckle (62) being arranged at the top end of the removal auxiliary tube (61), the removal lock buckle (62) comprising a stainless steel tube (621), a lock buckle bolt (622), a connecting shaft (623), a torsion spring (624), and a fixing frame (625), the stainless steel tube (621) being arranged at the top end of the removal auxiliary tube (61), the fixing frame (625) is arranged on the top of the stainless steel tube (621), the locking bolt (622) is arranged in the middle of the fixing frame (625), one end of the locking bolt (622) is a free end, and the other end is rotatably arranged on the connecting shaft (623), the connecting shaft (623) is fixed on the fixing frame (625), the torsion spring (624) is sleeved on the connecting shaft (623), one end of the torsion spring (624) presses against the locking bolt (622), and the other end presses against the fixing frame (625).

7. The internal remote-controlled urinary catheter according to claim 6, characterized in that: The bottom of the internal urinary catheter (1) is provided with a urinary catheter removal string (101), the stainless steel tube (621) contains an endoscope and a light source for conveniently observing the top condition, and the removal auxiliary tube (61) is a hollow plastic tube with a harderness greater than that of the internal urinary catheter (1) and an outer diameter smaller than the inner diameter of the internal urinary catheter (1).

8. A method for fixing the internal remote-controlled urinary catheter according to claims 1-4, characterized in that: The length of the internal remote-controlled urinary catheter when used for men is 8-12cm. After placement, there is no exposed part outside the body. It uses the natural curvature of the urethra to play a fixing role.

9. A method for inserting the internal remote-controlled urinary catheter according to claims 1-5, characterized in that: The following steps are involved: S1, inserting the auxiliary positioner (5) into the internal urinary catheter (1) and pushing it forward until it cannot go any further, at which time the urinary catheter valve (2) is in an open state due to the top force of the auxiliary tube (51); S2, insert the internal remote-controlled urinary catheter from the patient's external urethral opening, use the auxiliary positioning device (5) to push the internal remote-controlled urinary catheter slowly along the urethra, and push it in about 0.8 to 1.1 cm when urine is discharged; S3, after waiting for the urine to stop being discharged, slowly withdraw and place the auxiliary tube (51).

10. A method for removing the internal remote-controlled urinary catheter according to claim 1-7, characterized in that: The following steps are involved: S1, evenly apply sterile lubricant to the urinary catheter removal mechanism (6); S2, slowly push the auxiliary device along the urethra from the external urethral opening with the locking end of the catheter removal mechanism (6) until the locking bolt (622) of the catheter removal mechanism (6) approaches the catheter removal string (101), during which the locking bolt can be observed through an endoscope to reach the position of the internal urethra; S3, observing the angle between the locking bolt (622) and the catheter removal string (101) through the endoscope, and adjusting the angle of the locking bolt (622) by holding the catheter removal mechanism (6) until the locking bolt (622) forms a cross with the catheter removal string (101); S4, the catheter removal mechanism (6) is continuously and slowly advanced. Under the pressure of the catheter removal string (101), the locking bolt (622) is subjected to pressure from top to bottom, the locking bolt (622) rotates around the connecting axis, the free end sinks, and the lock is opened; the advancement is continued, the tube removal string slides down from the free end along the locking bolt, the pressure exerted on the locking bolt by the tube removal string disappears, and under the action of elastic force, the locking bolt (622) returns to its original position, and the lock is closed; S5, slowly pulling the urinary catheter removal mechanism (6) outward until the built-in remote-controlled urinary catheter is completely removed from the body.

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