62 results about "Urethral Catheters" patented technology

The invention discloses a catheter with real-time monitoring and alarming functions and a catheter system, and relates to the technical field of medical instruments, the catheter comprises a catheter main tube, a balloon, an interface, a pressure sensor and a flow sensor; the drainage tube, the flushing tube and the balloon tube penetrate through the inner space of the catheter handle; the drainage cavity electromagnetic valve is matched with the drainage tube penetrating through the catheter handle and is arranged on the catheter handle; the flushing cavity electromagnetic valve is matched with the flushing pipe penetrating through the catheter handle and is arranged on the catheter handle; the control module is used for judging the current normal urination or abnormal urination of the catheter according to the internal pressure of the bladder and / or the urine flow rate, and if the urination is judged to be normal, the drainage cavity electromagnetic valve is controlled to keep the drainage channel communicated; if it is judged that urination is abnormal, the abnormal type is determined by analyzing the internal pressure of the bladder and / or the urine flow rate, and processing including alarming is carried out according to the abnormal type.

The application provides a self-pressure relief safety catheter, which comprises a main tube, an insertion tube, an elastic connecting tube and an air bag tube; the main tube has a first lumen, a second lumen and a third lumen inside; the insertion tube has an insertion tube lumen inside and a flow guide hole on the outer wall, which is communicated with the insertion tube lumen; the elastic connecting tube is communicated with the first lumen and the insertion tube lumen; the air bag tube is sleeved outside the elastic connecting tube and connected between the main tube and the insertion tube. In the initial state, the outer wall of the air bag tube is basically flush with the outer walls of the main tube and the insertion tube; after being inserted in place, water is injected into the air bag tube, and the air bag tube is inflated; when the main tube is pulled by mistake, the elastic connecting tube is quickly elongated, the outer diameter of the air bag tube is quickly reduced, and the water inside the air bag tube is quickly overflowed through the flow valve. The self-pressure relief safety catheter can reduce the extrusion of the air bag tube on the urethral mucosa, avoid the occurrence of serious complications such as urethral injury or tearing caused by accidental pulling of the catheter, and improve the safety and reliability of the catheter use.

The utility model discloses an anti-pulling catheter, and belongs to the technical field of medical instruments. Comprising an inner tube, an outer tube arranged outside the inner tube in a sleeving mode and an insertion body fixed to the head end of the inner tube and communicated with the inner tube, the outer tube and the inner tube are connected in a sealed mode to form a partition cavity, a balloon is arranged at the position, located at the partition cavity, of the outer tube, and a liquid injection tube is communicated with the interior of the balloon and penetrates out of the partition cavity; the inner tube comprises an end tube connected with an insertion body and a tail tube in the other direction, the end tube and the tail tube are in sealed communication connection through a connector structure, the connector structure is located in the balloon, and the connector structure is used for breaking connection between the end tube and the tail tube when being subjected to axial tension; when a user pulls the catheter accidentally, the end tube and the tail tube are disconnected at the connector structure, liquid in the balloon can enter the tail tube and be rapidly discharged from the tail tube, the balloon is shrunk, at the moment, the catheter cannot be left in the bladder or pulled out, and damage to the bladder and the urethra is prevented.

The application discloses a catheter structure capable of controlling the releasing position of medicine liquid and belongs to the technical field of catheters. The catheter structure comprises a catheter main body, a plurality of medicine-feeding air bags are arranged on the surface of the catheter main body, a plurality of medicine-feeding holes are arranged on the side of the medicine-feeding air bags facing the outside of the human body, a plurality of medicine-feeding channels matched with the number of the medicine-feeding air bags are arranged in the catheter, one end of the medicine-feeding channels is arranged in the end of the catheter main body in a flush manner and is communicated with the outside, the depth of the other end of the medicine-feeding channels in the catheter main body is respectively corresponding to the position of the medicine-feeding air bags, and the other end is respectively communicated with the medicine-feeding air bags, a medicine-feeding hose is arranged at one end of the medicine-feeding channel on the end of the catheter main body, and one end of the medicine-feeding hose is connected with the end of the medicine-feeding channel. The technical scheme is used to solve the problem that it is difficult to realize accurate medicine feeding in the urethra when medicine liquid is injected into the urethra through the catheter in the prior art.

The utility model relates to the technical field of urethral catheters, and discloses a urinary surgery urethral catheter which comprises a urethral catheter body, the top end of the urethral catheter body is connected with an intubation tube, an air bag is arranged at the upper position of the outer ring of the intubation tube, and the top end of the intubation tube is connected with a silica gel plug. An anti-falling belt is arranged at the position, close to the cannula, of the outer ring of the catheter body, medical adhesive tapes are arranged at the positions, close to the two sides, of the top face of the anti-falling belt, protective films adhere to the top ends of the medical adhesive tapes, and a plurality of catheterization holes are formed in the outer ring of the cannula and the outer ring of the silica gel plug. By arranging an anti-falling belt, a medical adhesive tape, an air bag, a silica gel plug and a urine storage pot, the stability of catheterization is improved, the catheter body can be fixed to a proper position on a bed sheet or a sickbed, the probability that the catheter body falls off when a person moves is reduced, automatic replacement is facilitated, urine is prevented from leaking when the urine storage pot is replaced, and the use effect is improved conveniently.

The invention relates to the field of medical apparatus and instruments, and discloses an intelligent flushing and drainage device for transurethral surgery, which comprises a catheter, a urination cavity and a flushing cavity are formed in the catheter, and a placement cavity is formed in the center of the interior of the catheter. A plurality of elastic wires, a supporting assembly used for supporting the elastic wires and a control assembly used for driving the supporting assembly are arranged in the containing cavity, and the elastic wires are in an attached state relative to the supporting assembly. Through cooperation of the supporting assembly, the control assembly, the elastic wires and the like, the supporting assembly and the elastic wires can be firstly driven to move out of the containing cavity, the elastic wires are kept in an attached state, then the elastic wires can be driven to be converted into a bent state from the attached state based on the supporting assembly, and at the moment, the multiple elastic wires can be integrally expanded and shrunk in a cage shape; and blocked blood clots can be effectively cleaned.

The application discloses a urinary catheter for urology, and relates to the technical field of medical devices.The urinary catheter comprises a catheter main body, a urinary lumen, a medicine dropping lumen and a flushing lumen are arranged in the catheter main body; the urinary lumen is used for draining urine in a bladder; the medicine dropping lumen is used for adding medicine; and the flushing lumen is used for flushing the bladder; a connecting pipeline is connected with the catheter main body at a first end; a urinary head, a medicine dropping head and a flushing head are arranged at a second end of the connecting pipeline and are independent of each other; the urinary head is communicated with the urinary lumen; the medicine dropping head is communicated with the medicine dropping lumen; and the flushing head is communicated with the flushing lumen.The urinary catheter can drain urine or perform bladder perfusion treatment, add medicine into a patient's body, improve treatment effect and reduce the risk of complications such as urinary tract infection.

The present invention relates to a composition for inhibiting crystallization and / or biofilm formation on an indwelling catheter. Likewise, the present invention relates to the use of a composition as provided herein for the preparation of a medicament for inhibiting crystallization and / or biofilm formation on an indwelling catheter. The composition applied according to the invention contains trimagnesium citrate and tripotassium citrate, and the application of the composition reduces the risk of catheter blockage, reduces the risk of catheter-related urinary tract infection, reduces the risk of bladder calculus formation, reduces the risk of urethral mucosa injury caused by replacement of the indwelling catheter, and reduces the risk of urinary tract mucosa damage caused by replacement of the indwelling catheter. And allows the catheter to be used over an extended period of time.

The utility model discloses a diameter-adjustable urethral catheter, which belongs to the technical field of medical urethral catheters and comprises a urethral catheter body, the urethral catheter body is made of silica gel and is hollow inside, a liquid outlet is fixedly mounted at the lower end of the urethral catheter body, and an anti-falling component and a diameter adjusting component are fixedly mounted outside the urethral catheter body. The anti-falling assembly is located above the diameter adjusting assembly, the lower end of the liquid outlet is hinged to the anti-backflow assembly, one side of the upper end of the catheter body is provided with a head end side hole, the lower end of the catheter body is provided with scale marks, when the catheter is used, the catheter is prevented from falling off through the anti-falling assembly, and the diameter of the catheter is conveniently adjusted through the diameter adjusting assembly; the device can be suitable for patients with different urethra diameters, and urine in the urine bag is prevented from splashing and flowing back to the catheter through the backflow prevention assembly.

Among hospital–acquired infections, Pseudomonas aeruginosa-associated urinary tract infections (UTIs) are mainly caused by indwelling urethral catheters (catheter-associated UTIs or CAUTIs) and are difficult to treat, resulting in high rates of morbidity among hospitalized patients. While antibiotics can successfully treat bacteria in the bladder lumen, they are inefficient at crossing stratified urothelium plasma membranes to kill persistent intracellular bacterial communities (IBCs). Herein, UTI IBCs are targeted by locally delivering the antibiotic gentamicin and / or the steroid hormone estradiol via polymeric nanogels conjugated with a cell-penetrating peptide Cys-Gly-Lys-Arg-Lys (CGKRK - SEQ ID NO:1). This approach delivered more intracellular gentamicin compared to drug delivered in solution in vitro and more estradiol compared to conventional methods. In an acute UTI murine model, the nanogel cell-penetrating peptide drug delivery system facilitated the transport of gentamicin into the urothelium and resulted in > 90% clearance of a uropathogenic P. aeruginosa clinical strain in vivo.

Catheter products including urethral catheters with insertion aids. More specifically, urethral catheters having insertion aids and associated antimicrobial agents.

The utility model belongs to the fixed paste technical field, specifically is a catheter secondary fixed paste, including fixed paste main part, the middle part of fixed paste main part is provided with transparent dressing, both sides of transparent dressing are provided with adhesive plaster, the middle part of transparent dressing front is provided with fixed pad, both sides of fixed pad are provided with bandage. The utility model, through transparent dressing and adhesive plaster paste on the patient's skin, place the catheter on the fixed pad, use the bandage to bundle and fix, place the catheter in the catheter groove, pass through the right side fixed hole through the left side anti -disengagement zone, use magic paste stick part and magic paste stick part to stick, the secondary fixed of catheter, cooperate through adhesive tape, bandage and anti -disengagement zone, can more firmly fixed catheter, prevent its displacement or fall off, and long -term use fixed paste, also can not cause the damage of patient.

The invention belongs to the technical field of biological medicines, and particularly discloses a nano drug-loaded catheter coating material based on TUBA1C gene expression regulation and a preparation method thereof. The coating material is composed of siRNA (small interfering ribonucleic acid) loaded with TUBA1C and PLGA (poly (lactic-co-glycolic acid)) / chitosan nanoparticles loaded with antibacterial peptide GL13K. The sequences of the siRNA are as shown in SEQ ID NO: 1 and SEQ ID NO: 2. Nanoparticles are prepared through a multiple emulsion-solvent evaporation method, and the surface of the catheter is coated with the nanoparticles. The coating provided by the invention can synergistically exert gene silencing and antibacterial effects, and siRNA silences a TUBA1C gene in urethral mucosa cells in a targeted manner and inhibits inflammatory response and fibrosis; the antibacterial peptide GL13K can kill pathogenic bacteria and prevent the formation of biological membranes. The coating material has antibacterial, anti-inflammatory and anti-biofilm functions, can effectively prevent and treat catheter-related urinary tract infection, and reduces the risk of long-term complications such as urethrostenosis.

The urethral dilator comprises a main body structure and an incision knife, an incision knife guide rail groove is formed in the surface of the main body structure; an embedding body is arranged at the bottom of the incision knife; the embedded body is embedded into the incision knife guide rail groove, and the incision knife can be pushed and pulled in the direction of the incision knife guide rail groove. The urethral dilator is combined with an incision knife, operation is easy, safety is high, the application scene is wide, a doctor can conduct dilation operation conveniently, and when necessary, the dilation operation can be conducted at the same time to conduct internal incision on a narrow part; the urethral dilator main body structure can be a disposable instrument and is low in price, the incision knife is simple in structure, convenient to clean and capable of being repeatedly used, and the use cost is further reduced through combination of the incision knife and the urethral dilator; moreover, a medical worker can enter a guide wire through the guide wire cavity, the urethral dilator enters the cavity catheter under the guidance of the guide wire, and a contrast agent and a lubricant can be injected into the guide wire cavity, so that the success rate of dilation operation is effectively improved; and the stretching length and the length of an incision part can be conveniently identified, so that urethral dilatation and incision operations can be accurately performed.

The utility model discloses a catheter for treating urethral stricture relates to urology technical field, and the utility model discloses a branch pipe, one side of branch pipe is equipped with three cavity pipes, and the other end fixed of branch pipe is equipped with indirect cavity, and one side fixed connection of indirect cavity has the connecting hopper, one side fixed connection of connecting hopper has the transmission pipe and one end fixed connection of transmission pipe has the urine tube access end, the upper surface one side fixed of urine tube access end is equipped with the pilot soft block, the upper surface fixed connection of urine tube access end has the input pipe, and the input pipe is linked together with transmission pipe, the utility model provides a catheter for treating urethral stricture, and the design of urine tube opening is in the tip, solves the problem that the conventional catheter cooperates with the guide wire for the urethral stricture patient and is easy to angle, and the problem of difficult to place, makes the catheter can follow the guide wire and pass the narrow urethra, improves the success rate of placement, reduces the patient's pain and urethral injury.

This invention provides an external fixation device for a balloon catheter used in clinical nursing, belonging to the field of medical devices. It includes a mounting box, with a fixing rod fixedly connected to the inner surface of the mounting box. A buffer assembly is provided on the outer side of the fixing rod. The buffer assembly includes a winding part and a movable part. The winding part includes a movable sleeve rotatably connected to the outer surface of the fixing rod. By setting the buffer assembly, the catheter can be wound and stored by a guide frame, keeping the length of the catheter outside the mounting box within an appropriate range. This effectively reduces the risk of accidental pulling on the catheter. The movement of the guide frame releases the catheter, buffering and absorbing the pulling force on the catheter, thereby effectively reducing the transmission of pulling force to the balloon catheter. This reduces the probability of damage to the patient's bladder and urethra caused by the balloon catheter during accidental patient movement, thus effectively ensuring comfort during the operation of the catheterization device.

The special urethral catheter for the gynecology department comprises a catheter body, one end of the catheter body is sequentially provided with a catheter head, a urethral catheterization opening is formed in the position of the catheter head, a liquid outlet is formed in the other end of the catheter body, the catheter body comprises a liquid guide pipe and an outer-layer pipe, the liquid outlet and the urethral catheterization opening are communicated with the liquid guide pipe, a movable pipe is arranged between the liquid guide pipe and the outer-layer pipe, and the movable pipe is connected with the outer-layer pipe. One end of the movable tube is fixedly connected with a rotating ring, at least three medicine cavities are distributed in the movable tube in the axial direction of the movable tube, a plurality of inner openings are formed in the surface of the movable tube, the inner openings correspond to the medicine cavities in a one-to-one mode, the inner openings are communicated with the corresponding medicine cavities, the directions of the inner openings are different, and anesthetics are contained in the medicine cavities respectively. And a plurality of communicating ports are sequentially formed in one side of the outer-layer pipe and correspond to the inner openings one to one. The urethral catheter special for the gynecology department adapts to anatomical characteristics of female urethra, the medicine covering length of 4-5 cm accurately acts on urethral mucosa, and whole-course anesthesia is achieved through segmented medicine release of multiple medicine cavities.

The invention discloses a non-body-entering catheter, belongs to the field of medical instruments, and aims at solving the problems that a traditional male body-entering catheter is high in infection risk and depends on professional operation. The condom comprises a condom body, a transition connecting tube, a drainage tube and a urine collecting bag, the condom body is of a flexible sleeve-shaped structure with one end open and the other end closed, and an elastic binding ring is arranged on the edge of the open end to be attached to the root of the penis to prevent leakage. The transition connecting tube comprises a first connecting section and a second connecting section which are sequentially connected and are respectively fixedly and hermetically communicated with the closed end of the condom body and the drainage tube; the drainage tube is a transparent flexible tube; the upper part of the urine collection bag is provided with a plug-in urine collection bag liquid inlet interface which is hermetically connected with the drainage tube; the lower part of the urine collection bag is provided with a one-way urine collection bag liquid discharge valve; the bottom of the urine collection bag is a slope inclined towards the liquid discharge valve; and the top edge of the urine collection bag is provided with a suspension hole. The device does not need to invade the urethra, greatly reduces the infection risk, can be operated by a user autonomously, is low in cost, and is suitable for home nursing and other scenes.

A detachable urethral catheterization device for guiding a movement of a urinary catheter is provided. The detachable urethral catheterization device includes a conveying body and a clamping module. The conveying body includes a driving module, a conveying channel, and a module accommodating groove in communication with the conveying channel, the module accommodating groove including a first coupling component. The clamping module coupled to the driving module, and having a second coupling component, where the second coupling component is detachably coupled to the first coupling component in the module accommodating groove, and where the driving module is configured to control the clamping module to clamp the urinary catheter and move the urinary catheter in the conveying channel and the module accommodating groove.

The invention discloses a controllable catheter which comprises an in-vivo implantation unit, an in-vitro control unit and an external auxiliary assembly. The in-vivo implantation unit is a medical silicon rubber hollow tube body and has seven specifications of 3.5-6.5 cm, a petal-shaped fixing part close to the bladder end can be unfolded and anchored on the bladder wall, and a magnetic drive pump valve assembly is arranged in the middle of the in-vivo implantation unit; the in-vitro control unit drives the spiral impeller to conduct negative pressure drainage through magnetic coupling, and the key controls opening and closing of the one-way valve. The size adaptation assembly comprises a urethra measurer and a push rod. The petal-shaped fixing part is coated with an antibacterial coating, the magnetic coupling efficiency between the inner magnet and the outer magnet is larger than or equal to 85%, and magnetic field leakage is controllable. The in-vitro unit integrates pressure monitoring and alarming functions and supports wireless charging and disinfection. And protein adsorption is reduced through in-vivo unit surface treatment, and the sealing of the joint reaches the IP67 standard. The device realizes autonomous urination control through magnetic driving, precise adaptation and antibacterial design, reduces the infection risk, improves the autonomy of patients, and is suitable for patients with urination dysfunction.

The invention belongs to the technical field of instrument testing, and particularly relates to a catheter bending resistance testing tool which comprises a testing main support, an extending edge is arranged on one side of the testing main support, a bent edge is arranged on the side, away from the extending edge, of the testing main support, and a shaft rod is movably connected to the position, close to the edge, of the surface of one side of the extending edge through a rotating shaft. Threaded holes are formed in the upper surface of the shaft rod, a coupling piece is fixedly installed at one end of the shaft rod through a bolt, threaded holes are formed in the two sides of the outer arc face of the coupling piece, and the catheter can be subjected to additional direction adjusting acting force in the process of penetrating through the guide sleeve piece through the guide sleeve piece and the locking teeth. The adjustment simulates the tiny direction change of the catheter caused by factors such as movement and extrusion of tissues and organs in a complex physiological environment of a human body, and meanwhile, the bending and twisting plate continuously rotates back and forth according to a set angle and frequency to apply a composite bending effect on the catheter, so that the catheter is subjected to secondary analysis.

The utility model relates to the technical field of urethral catheters, and discloses an antibacterial urethral catheter which comprises a urethral catheter body, the urethral catheter body is used for urethral catheterization, a through hole is formed in the urethral catheter body and used for guiding flow, and a positioning assembly is arranged in the urethral catheter body and used for fixing the urethral catheter body in the body of a patient. The outer wall of the catheter is fixedly connected with a pressurizing head, and the pressurizing head is used for inflating and deflating the positioning assembly; the utility model relates to a connecting pipe, which comprises a first connecting pipe, a second connecting pipe and a conical sleeve, the conical sleeve is used for connecting a pipeline, the outer wall of the conical sleeve is fixedly connected with a butterfly plate, and the butterfly plate is used for improving the stability of the conical sleeve. The conical sleeve and the first connecting pipe are sealed through a first sealing ring, and the connecting strength between the conical sleeve and the first connecting pipe is improved through a convex point; the effect of improving the connection strength is achieved, the problem that when a traditional catheter is connected with a urine bag, connection is easy to disengage only through friction force is solved, and the connection strength of the catheter is improved.

The invention provides an intermittent catheter comprising a hollow polymeric tubular body comprising a base polymer and a lubricious additive, wherein the lubricious additive comprises an amphiphilic molecule having a hydrophilic-lipophilic balance below 8.

The utility model discloses an air blowing and blanking device of a catheter extrusion production line, which is characterized in that firstly, in the process that a catheter is cut off and then conveyed to a conveying belt, an air inlet electromagnetic valve is in a closed state, so that the conveying of the catheter is prevented from being influenced; when the catheter is conveyed in place, an air inlet electromagnetic valve is opened, high-pressure air flow is sprayed out from a plurality of air blowing holes of an air blowing pipe, so that the catheter is blown to a buffering and blocking mechanism, and after the catheter impacts the buffering and blocking mechanism, the catheter falls on the machine table; then, the circulation is repeated, so that the catheter is tidily dropped on the machine table; finally, blowing and discharging are conducted on the side faces of the urethral catheters, the discharging direction of the urethral catheters is perpendicular to the conveying direction of the urethral catheters in the machining process, and the machine table is arranged for temporarily storing the blown-off urethral catheters so that workers can conveniently take the urethral catheters in a centralized mode; meanwhile, the air holes are formed in the baffle grooves, so that the phenomenon that airflow on the air blowing pipe blows down the baffle grooves and then rebounds can be avoided.

The application discloses an adjustable urethral catheter fixing support and relates to the technical field of urethral catheters. The urethral catheter fixing support comprises a fixing waistband, the fixing waistband is fixedly connected with a first fixing block, the first fixing block is rotationally connected with a rotating frame, the first fixing block is rotationally connected with a guide pipe, the guide pipe is spline-connected with a connecting frame, the end of the rotating frame close to the connecting frame is mutually clamped, a clock spring is fixedly connected between the first fixing block and the guide pipe, a spring is wound on the connecting frame, one end of the spring is in contact with the first fixing block, a connecting belt is wound on the rotating frame, one end of the connecting belt away from the first fixing block is fixedly connected with a rotating plate, and the rotating plate is fixedly connected with a bandage. The application utilizes the waist force to pull and resist the weight of the urine collecting bag through the connecting belt, and the clock spring is used to prevent the rotating frame from rotating at will and unlimitedly, so that the connecting belt is prevented from being loosened at will, the urethral catheter is prevented from being pulled downward by the weight of the urine in the urine collecting bag, and the negative influence of displacement of the urethral catheter on the patient is avoided.

A travel urination device is provided. The device is comprised of a modular, portable travel urination device designed to address hygiene and convenience challenges during travel or prolonged periods without restroom access. The device comprises adaptive clothing with a waterproof-lined opening for attaching body-specific adapters, a tubing system for unidirectional flow, and a spill-proof waste container with odor-control features. The adapters are tailored for male and female anatomies, using medical-grade, hypoallergenic materials for secure and leak-resistant use. Additional components include a collapsible tubing system with quick-connect fittings and a storage case with compartments to separate clean and used components, enhancing hygiene. The device also incorporates accessories such as hand sanitizer, biodegradable wipes, and disposable gloves, ensuring easy cleaning and maintenance.

The utility model discloses a urethral catheterization assistive device which comprises a main body plate, wing plates, a first positioning clamp and a second positioning clamp, the wing plates are hinged to the left side and the right side of the main body plate, and the first positioning clamp and the second positioning clamp are arranged on the upper side of the main body plate in a spaced mode. The wing plate is matched with the thigh to facilitate placement of the main body plate, the first positioning clamp is matched with a male genital organ and is used for fixing the male genital organ and the urethra, and the second positioning clamp is matched with a guide head on the outer side of the catheter and is used for fixing the guide head to realize mutual positioning of the urethra and the guide head; after fixation, the urethral catheter on the inner side of the guide head slides, and the urethral catheter head at one end of the urethral catheter is inserted into the urethra; the operation difficulty of catheterization is reduced, and after simple training, the patient can insert the catheter and conduct catheterization by himself / herself; the cost of the urethra is reduced.

The utility model discloses a urethral catheter with a catheter body containing and fixing structure, which comprises an arc-shaped block, a containing box is arranged at the front end of the arc-shaped block, a urethral catheter body is arranged on one side in the containing box, a first bandage is arranged on one side of the arc-shaped block, a second bandage is arranged at the other end of the arc-shaped block, and the catheter body is arranged in the containing box. A storage groove is formed in one side of the interior of the storage box, and one end of the catheter body extends into the storage groove. According to the catheter with the catheter body containing and fixing structure, a user does not need to worry about the influence of shaking or swinging of the drainage tube in the walking process on actions, does not need to worry about embarrassment and inconvenience caused by lack of a proper containing mode, and does not cause any damage or discomfort to the skin of a patient; and the patient can keep higher comfort and satisfaction during the treatment period.

The invention relates to the technical field of urethral catheters, in particular to an antibacterial urethral catheter and a preparation process thereof. The preparation process of the antibacterial catheter comprises the following steps: preparation of quaternary phosphonium salt antibacterial functional monomers, preparation of acrylic agarose, pretreatment of a catheter substrate and preparation of the antibacterial catheter. The antibacterial monomer with unsaturated double bonds and quaternary phosphonium salt groups is synthesized, and bacterial cell membranes can be destroyed for bacteriostasis. Through oxygen plasma treatment and ultraviolet curing, a firm three-dimensional cross-linked coating is formed on the catheter, and adhesion prevention and sterilization are achieved in combination with acrylated agarose. And three-section gradient temperature control is adopted, so that the coating film forming performance and the catheter performance are guaranteed, and the risk of related complications is reduced.

The utility model discloses a urethral sphincter simulation device for a leakage-proof test of a catheter, which comprises a liquid storage bag, a liquid outlet, a liquid outlet and a liquid outlet, the sphincter simulation assembly comprises a base tube connected with the liquid outlet and triangular notches symmetrically formed in the bottom end of the base tube; the top tube wall of the urethra simulation tube is provided with a longitudinal expansion seam and is nested in the inner cavity of the base tube; the traction rope is connected to the top of the liquid storage bag, and the bottom end of the traction rope is movably stretched up and down on the periphery of the base tube. The liquid leakage condition of the catheter is simulated in a sphincter diastolic state, so that the liquid leakage condition is visualized, the detection effect and the repeated utilization rate are improved, and meanwhile, the processing cost is low.