265 results about "Urethral Catheters" patented technology

A labial retention device includes a body defining a pair of wings defining therebetween a central opening permitting visualization of urethral and vaginal openings when the device is in contact with a genital region of female anatomy. The body's rear surface bears skin-adhering adhesive. The body may define sidewalls for retaining labia and / or other bodily tissue in displaced positions, and may include an anterior tab and / or a posterior tab to aid in securement and / or act as a shield to prevent unwanted bodily contact. The wings of the body may be joined to form a closed loop encircling the central opening, or be joined such that the central opening is not encircled by the wings. During use, labial / urogenital tissues are displaced and adhered to the rear surface of the labial retention device, which in turn retains the displaced labia / tissues in a spread / displaced position to aid in visualization and catheter placement purposes.

The utility model relates to the technical field of catheter placement devices, and discloses a sow catheter intubation auxiliary device which comprises an expansion column made of transparent materials, and an illuminating lamp is inserted in the middle of the expansion column; the inflation part is arranged on the surface of the expansion column and is made of a transparent material, and at least one catheter clamp is arranged on the surface of the inflation part; the moving part is located on the outer side of the inflation part and slidably connected with the expansion column, and a top inner cavity is higher than the top face of the clamp; the amplifying part is adjustably arranged at the top of the moving part corresponding to the urethral orifice of the sow. Through the cooperative arrangement of the expansion column, the illuminating lamp and the inflation piece, the whole body can be a luminous body in use, the illuminating effect is achieved, and the sow vaginal orifice inserting device is more convenient to insert into the sow vaginal orifice.

The invention relates to the technical field of silica gel catheter pressure adjustment, in particular to a pressure self-adaptive adjusting system for a silica gel catheter, and the system is provided with a silica gel catheter monitoring module, a pressure sensing module, a pressure adjusting module and an adjusting early warning module. The performance of the catheter can be accurately evaluated, the pressure data of the area to which each catheter belongs can be monitored in real time, the pressure abnormity of the catheter in the simulated use process can be found in time, and the catheter fault caused by the pressure abnormity can be avoided; the pressure in the catheter can be adjusted according to the simulated pressure in the bladder and the simulated pressure in the urethra of the catheter, meanwhile, adjustment data in the pressure adjustment period of each catheter are obtained, the change condition of the pressure of the catheter can be monitored in time, and the timeliness and safety of pressure adjustment of the silica gel catheter are improved.

The invention discloses a urinary surgery nursing leakage-proof urinary catheterization device which comprises a urinary catheter, a leakage-proof assembly is arranged at the top of the urinary catheter, a fixing assembly is arranged on the outer side of the leakage-proof assembly, a connecting assembly is arranged at the top of the leakage-proof assembly, the leakage-proof assembly comprises an inner tube, the inner tube is fixedly installed at the top of the urinary catheter, and a sealing assembly is arranged at the bottom of the inner tube. The bottom of the catheter is communicated with the outside, the expansion tube is made of elastic silica gel, and the sealing cover is made of silica gel. According to the urinary surgery nursing leakage-proof urethral catheterization device, a leakage-proof assembly of the device is attached to the outer portion of a urethral orifice through a sealing cover to provide certain sealing performance, an expansion pipe is made of elastic silica gel, a screw can be driven to rotate by rotating a rotary knob, a piston plate is pressed downwards to squeeze air in an inflator into the expansion pipe, the air is expanded outwards, and a urethral orifice gap is filled; the sealing performance of the connecting position of the catheter and the urethra is greatly improved, and urine is effectively prevented from leaking out of the communicating position of the catheter and the urethra.

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 invention provides a urethral catheterization device, which relates to the technical field of urethral catheterization, and comprises a tube body, a balloon injection cavity, a balloon injection cavity and a catheter, the at least three columnar balloons are columnar in an emptying state and are ellipsoidal in a bulging state, one ends of the at least three columnar balloons are connected with one another, and the other ends of the at least three columnar balloons are provided with injection ports and are connected with the insertion end of the tube body, so that each injection port is communicated with one balloon injection cavity; one end of the shell is a guide part, the other end of the shell is connected with the insertion end of the tube body, the shell wraps the outer sides of the at least three columnar balloons, an opening is formed in the shell, and the columnar balloons can burst the shell when in a bulging state; one end of the guide wire is connected with one ends of the three columnar balloons, the guide wire penetrates through at least part of the urinary catheterization cavity, and the other end of the guide wire extends to the outer side of the catheter body; the problems of patient discomfort, urine residue, urethra damage caused by balloon deformation and the like due to the catheter can be avoided.

The utility model relates to the technical field of urethral catheters, and discloses a urethral catheter which comprises a first inflation urethral catheter guide wire and a urethral catheter body, the first inflation urethral catheter guide wire is arranged on the urethral catheter body, a first inflation urethral catheter head is arranged at the top end of the urethral catheter body, and a second inflation urethral catheter head is arranged at the bottom end of the urethral catheter body. According to the utility model, through the arrangement of the catheter flushing cavity inlet and the catheter flushing cavity screw cap, when the bladder is continuously flushed, the catheter flushing cavity inlet is communicated with the first inflating catheter head through an infusion apparatus, and the first inflating catheter head is communicated with the first inflating catheter head through the first inflating catheter head fixer and the first inflating catheter head fixer, and the first inflating catheter head fixer and the first inflating catheter head fixer are fixedly connected with the catheter body through the soft silica gel fixer. Bladder flushing fluid is input into the first catheter flushing cavity, enters the catheter flushing cavity from the catheter flushing cavity inlet and directly reaches the bladder, flows into the catheter main drainage cavity after flushing, flows out of the catheter main drainage cavity outlet and enters a drainage bag, and therefore bladder flushing of a user is safer and more convenient.

The utility model relates to the technical field of medical auxiliary supplies, in particular to a three-cavity valve urethral catheter, which aims to solve the problems of the existing urethral catheter, and adopts the scheme that a water filling nozzle tube, a liquid outlet tube and a liquid inlet tube are jointly connected to the tail end of a catheter body, a hole groove is formed in the side part of the head end of the catheter body, and a balloon arranged on the catheter body is arranged behind the hole groove. A urination channel, a flushing channel and a liquid filling channel are arranged in the catheter body, and the water injection nozzle tube, the liquid filling channel and the balloon are sequentially connected to form an inflation channel. The liquid outlet tube, the urination channel and the head end of the tube body are sequentially connected to form a catheterization channel; the liquid inlet pipe, the flushing channel and the hole groove are sequentially connected to form a flushing passage; the water injection port pipe is further connected with a water injection hard valve, threads are arranged on the inner wall of the water injection hard valve, the pressure reducing device is in threaded connection with the water injection hard valve, and valves are arranged in the liquid outlet pipe and the liquid inlet pipe. And the valve in the liquid outlet pipe and the valve in the liquid inlet pipe are arranged in opposite directions. According to the scheme, the risk of retrograde infection of a patient is effectively reduced.

The utility model discloses a catheter which comprises a connecting tube body, a front-end tube body and a balloon, and the connecting tube body is provided with a first drainage channel and a first inflation channel; the two ends of the front-end tube body are an inserting end and a connecting end respectively, the inserting end is provided with a plug, the connecting end is connected with the connecting tube body, the inserting end is provided with at least one drainage hole, the inserting end is provided with a concave area annularly arranged on the front-end tube body, the concave area is provided with an inflation hole, and the front-end tube body is an integral injection molding component; the sacculus is arranged in the concave area, the peripheral wall of the sacculus is flush with the peripheral wall of the front end tube body, and the sacculus is communicated with the second inflation channel through the inflation hole. A concave area is arranged on the portion, adhering to the balloon, of the front-end tube body, the balloon can be just flush with the tube body, the balloon can be fixed only through mucilage glue, smooth transition is not needed, plugging and punching are completed on the front-end tube body subjected to injection molding, punching and plugging are not needed again, the time-consuming transition, punching and plug adhering procedures are omitted, production efficiency is improved, and cost is reduced.

The invention discloses urethral catheter leakage-proof detection equipment which comprises a fixed bottom plate which is of a plate-shaped structure, is installed at the bottom of the whole equipment and is used for supporting the whole equipment; the lower box body is installed at the top end of the fixed bottom plate, a supporting seat is further integrally installed at the top end of one side of the lower box body, and a lifting mechanism is arranged in the supporting seat and connected with the upper box body; the system further comprises; and the fixing mechanisms are arranged in the lower box body and are arranged outside the two clamping pipes. The invention discloses a leakage-proof detection device for a catheter. The bottom of the whole catheter is very convenient to install, the phenomenon that clamping is not thorough does not occur, meanwhile, during follow-up disassembly, when clamping blocks on the outer fixing mechanism are controlled to be separated from each other, the overall size of the inner fixing mechanism can be reduced again, and the overall size of the inner fixing mechanism is reduced. Therefore, the follow-up dismounting work is very convenient, and the manual mounting efficiency is ensured to be higher.

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 invention relates to the technical field of multi-cavity urethral catheters, in particular to a multi-cavity urethral catheter with temperature and pressure measuring functions, which comprises a hose, anti-falling mechanisms are arranged on the outer side surface of the hose and the inner side surface of a water injection pipe, and a filtering mechanism is arranged at the other end of the hose. A flushing mechanism is arranged on the outer side surface of the hose and the outer side surface of the flushing pipe, a fixing mechanism is arranged on the outer side surface of the hose, and when urine in the filtering mechanism flows to the filtering cage from the filtering drill bit, the filtering cage can filter postoperative tissue and sediment between the filtering drill bit and the filtering cage; and then due to flowing of urine, turbine blades can be driven to rotate, the filtering cage rotates, the outer side surface of the filtering cage and the inner side surface of the filtering drill bit rub against each other, postoperative tissue and sediment are crushed, therefore, blockage of the catheter is prevented, and the pressure value in the bladder can be maintained.

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 utility model discloses a novel urethral probe. The novel urethral probe comprises a bougie, a handle and a ureter fixer, a U-shaped groove is formed in one end of the handle in the axial direction of the handle, an inserting hole is formed in the position, located at the end of the U-shaped groove, of the handle, a through hole communicated with the inserting hole is formed in the other end of the handle, and ureter fixers are arranged on the two sides of the end, located at the U-shaped groove and away from the inserting hole, of the handle. The bougie is of a hollow structure and comprises a bougie body part and an arc-shaped end part which are integrally formed, one end of the bougie body part is inserted into the insertion hole, and a damping ring matched with the bougie body part is arranged in the insertion hole; and the guide wire penetrates through the through hole and is inserted into the bougie. The urethral probe is simple in structure and convenient to use, and can be quickly, safely and effectively placed into a catheter, the risk of urethral injury is reduced, and the operation time is shortened.

The utility model relates to a urethra traction device, and belongs to the technical field of medical instrument structures. The device comprises a traction frame and a fixer, and is characterized in that the traction frame is formed by sequentially and vertically connecting a first telescopic rod, a second telescopic rod and a third telescopic rod, a first pulley is mounted at one end of the first telescopic rod, the other end of the first telescopic rod is vertically connected with one end of the second telescopic rod, and the other end of the second telescopic rod is vertically connected with the third telescopic rod; the top end of the third telescopic rod is provided with a second pulley, the third telescopic rod is fixedly connected with a fixator through a bridge plate, and the side face of the fixator is provided with a third pulley. The postoperative traction device is scientific and reasonable in structure and easy to operate, can provide continuous and stable traction force for the indwelling catheter needing to be pulled after the surgery, achieves the effects of compression hemostasis and infection prevention, can adjust the length of the telescopic rod, is suitable for patients of various body types, can keep warm for the patients and protect privacy, and solves the problems that no available equipment is available for traction after the urinary surgery, and the traction cost is low. And the discomfort of the patient is increased by using gauze.

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.

A catheter insertion lubricating device relates to the field of medical instruments and comprises a sterilizing tube and a fixing plate, the fixing plate is arranged at the penetrating-out end of the sterilizing tube, one end of the fixing plate is connected with the sterilizing tube, the sterilizing tube is composed of a first connecting plate and a second connecting plate, and one side of the first connecting plate is hinged to one side of the second connecting plate; the other side of the first connecting plate and the other side of the second connecting plate are fixed through a buckle, and medical sponges for adsorbing a lubricating liquid and an iodophor solution are arranged in the first connecting plate and the second connecting plate; the urethral catheter disinfection device is high in practicability and very convenient to use, the lubricating cavity is formed in the disinfection tube, the surface of the urethral catheter is lubricated, and the pain degree of a patient during insertion is reduced; the disinfection cavity is formed in the disinfection tube, so that the surface of the catheter is disinfected when the catheter is inserted, and the urinary tract infection of a patient caused by bacteria is prevented; by arranging the fixing plate, the disinfection tube is fixed when the catheter is inserted, and medical staff can operate conveniently.

The utility model relates to a catheter with a variable pipe diameter, and belongs to the technical field of medical instruments. Comprising a catheter body internally provided with a urinary catheterization channel. The first sleeve is coaxially connected to the outer part of the catheter main body in a sleeving manner; the elastic anchoring sleeve is coaxially connected to the exterior of the first sleeve in a sleeving mode, and a second annular channel is defined by the elastic anchoring sleeve and the outer wall of the first sleeve; and the pressure release structure is communicated with the second annular channel and is configured to be in an open state or a closed state based on the fluid pressure in the second annular channel. The elastic anchoring sleeve can reliably prevent excessive radial pressure applied to urethral mucosa due to excessive expansion of the elastic anchoring sleeve, so that serious complications such as ischemia, edema, pressure necrosis and even long-term urethrostenosis caused by long-term compression of local tissues are effectively avoided.

The present invention provides a comprehensive catheterization whole-process simulation system, which includes a urethra simulation device, a urethral resistance simulation device, a urination simulation device, a gastric lavage simulation device, and a sensor and measurement system. The urethra simulation device is arranged at the anal position of a human genital model; the urethral resistance simulation device includes a peristaltic pump and an airbag connected to the peristaltic pump. The airbag is arranged at the anal position, and the inflation of the airbag exerts pressure on the urethra simulation device; the urination simulation device includes a water pump, and the water pump is connected to the urethra simulation device; the sensor and measurement system includes a first sensor, a first permanent magnet connected to the first sensor, and a catheter. The catheter is provided with a first permanent magnet; the first sensor collects the magnetic field data of the first permanent magnet, and calculates the insertion depth of the catheter in the urethra simulation device according to the magnetic field data. The present invention can completely present the whole process of comprehensive catheterization, and users can repeatedly practice and learn in a relatively real and integrated environment, improving the training efficiency.

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 utility model discloses an anti-infection antibacterial catheter which comprises an antibacterial catheter body, a urination catheter hole vertically penetrates through the interior of the antibacterial catheter body, the upper end of the urination catheter hole is communicated with a connector, an air bag is arranged outside the lower side of the antibacterial catheter body, and an inflation and deflation pipe hole is formed in the left side of the interior of the antibacterial catheter body. The upper end of the flushing exhaust pipe hole is communicated with a flushing exhaust valve head, the flushing exhaust valve head is fixedly connected to the upper side of the left end of the antibacterial pipe body, the left side of the flushing exhaust pipe hole is provided with an emergency exhaust pipe hole, the upper end of the emergency exhaust pipe hole is communicated with an exhaust pipe opening, and the connector is fixedly connected to the top end of the antibacterial pipe body. An emergency exhaust pipe hole and a plugging film are designed, when accidental external tension is encountered, an emergency exhaust mechanism of the air bag can respond rapidly, secondary injury to the urethra of a patient is avoided, the safety protection function of the product is enhanced, the antibacterial pipe body is made of Parx antibacterial materials, bacterium breeding is effectively reduced, and the infection risk is reduced.

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 utility model provides a urethral catheter urine collector convenient for collecting midstream urine, which comprises a urethral catheter and a spoon-shaped hollow urine collecting tube, a circular through hole is formed in the catheter; a urine taking pipe penetrates through the penetrating hole, and sealing silica gel is arranged at the two ends of the penetrating hole. A drainage tube is arranged in the hollow center of the urine taking tube, the inner side end of the urine taking tube is located in the urine tube, the section of the urine taking tube is round, and the outer diameter of the urine taking tube is matched with the diameter of the penetrating hole. The urine collection bag has the advantages that urine in the middle section of the urine guide pipe is directly guided out through the hollow urine collection pipe to serve as a specimen, and the problem that urine can be directly input into the urine guide bag through the urine guide pipe for a bedridden patient, and the urine is difficult to serve as the specimen to be detected after being mixed is solved.

The utility model discloses an intermittent urethral catheter, which relates to the technical field of urinary surgery nursing and comprises a urethral catheter body, the top of the urethral catheter body is fixedly connected with a connecting pipe orifice, the top of the connecting pipe orifice is in threaded connection with a connecting component, one side of the urethral catheter body is fixedly connected with a lubricating layer, and the lubricating layer is in threaded connection with the connecting component. The other side of the catheter body is fixedly connected with scale marks, and the catheter body is slidably connected with a controller assembly; through the arrangement of the protective cylinder and the connecting pipe opening, the safe disinfection effect is achieved in the using process, the catheter body can be effectively protected through the protective cylinder, disinfectant fluid is contained in the protective cylinder, the catheter can be effectively stored when not used, and the situation that a patient is infected in the using process is avoided; the catheter can be prevented from being damaged in the storage and use process, the interior of the protection barrel can be kept clean when the protection barrel is not used due to the arrangement of the blocking cover, and the service life of the catheter is prolonged.

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 utility model discloses a urethral catheterization structure convenient for reserving a urine sample, which comprises a urethral catheter, and further comprises a liquid reserving joint arranged on the side wall of the urethral catheter and communicated with an inner cavity of the urethral catheter, the urine collector is detachably connected with the liquid retention connector of the catheter and is used for storing urine which is temporarily shunted by the liquid retention connector and is in the catheter; and the plug is detachably connected with the liquid retention joint of the catheter, so that urine in the catheter selectively flows into the urine collector. The urethral catheterization structure convenient for collecting the urine sample is simple in structure, convenient to use and safe to operate, does not cause urinary retention of a patient, and reduces the cost of seeing a doctor for the patient.

The utility model discloses a catheter for bladder perfusion chemotherapy. The catheter comprises a pipeline, a liquid outlet is formed in the end of the pipeline, the side end of the liquid outlet is in threaded connection with a mounting cap through a connecting assembly, an injector is arranged at the side end of the mounting cap, and liquid in the pipeline is sucked through the injector; a connector is fixed to the side end of the mounting cap and connected with a protective cover. According to the catheter for bladder perfusion chemotherapy, the installation cap is matched with the connecting assembly to be connected with the liquid outlet, the threads on the outer side of the installation cap are used for connection, so that the overall connection is stable, the risk of medicine overflow is reduced, injected liquid is sucked out through an injector at the side end of the installation cap, and the overall operation is convenient and fast; the treatment time is shortened, the comfort degree of a patient is improved, a drainage bag is not needed for drainage operation, the treatment cost is reduced, and the overall use safety is improved.

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.