87 results about "Catheters dialysis" patented technology

Systems and methods for infection prevention and treatment in biological conduits using electroporation or pulsed field ablation (PFA). The system includes an elongate member, such as a dialysis catheter, vascular access device, or peritoneal dialysis conduit, with at least one electrode positioned along, within, or around the member. A control unit applies pulsed electric fields to inhibit microbial colonization, disrupt bacterial biofilms, and alter permeability of bacterial or endothelial cells to enhance sterility or fluid exchange. The system may use real-time impedance monitoring, microbial detection, or fluid composition analysis to adjust electroporation parameters. Electroporation may synchronize with dialysis cycles or antimicrobial lock solutions. The method includes automated, clinician-controlled, or sensor-triggered treatments to reduce infections and improve device longevity. The system provides an alternative or augment to antibiotics, reducing the risk of drug-resistant infections while improving the longevity and safety of medical implants.

An antithrombotic surface-modified biomaterial is provided comprising a biomaterial substrate coated with a polymerizable dopamine-containing bioadhesive to which is attached one or more antithrombotic agents. A method of preparing the surface-modified biomaterial is also provided. The surface-modified biomaterial is beneficial for use in blood-contacting medical devices such as catheters, dialyzers and blood oxygenators to prevent or minimize the occurrence of thrombosis on the surface thereof.

The utility model relates to the technical field of catheter fixation, in particular to a temporary dialysis catheter fixator which comprises a first hard sheet, a second hard sheet, a base band, a first adhesive patch and a second adhesive patch. According to the utility model, the S-shaped folded adhesive patches (namely the first adhesive patch and the second adhesive patch) are arranged, so that the adhesive patch can be attached to the skin of a patient, the first hard piece and the second hard piece, and the catheter to be fixed, and the adhesive tape is saved; moreover, due to the structural arrangement of the adhesive tape, only one surface of the adhesive tape is a bonding surface when the adhesive tape is unfolded, and compared with a double-sided adhesive tape, the adhesive tape adopted by the adhesive tape is lower in cost and easier to manufacture.

The present disclosure provides a catheter system including a plurality of fenestrations along the shaft of the catheter, wherein the fenestrations allow for continuous or intermittent infusion of antiseptics and / or antibiotics to avoid and treat bacterial colonization or infection of the subcutaneous tract and to minimize subcutaneous tunnel colonization and fibrin sheath in symptomatic or asymptomatic patients. The present catheter system can also include a removable abrasive component on the catheters tip to assist with mechanical debridement of subcutaneous tract and intravascular fibrin sheath.

The invention belongs to the technical field of medical instruments, and discloses a peritoneal dialysis catheter sealing connector which comprises a shell and further comprises a limiting assembly movably connected to the interior of the shell and a rotating assembly movably connected to the middle of the outer wall of the shell. Through cooperation of a rotating cylinder, arc grooves, arc-shaped plates, a guide groove and other structures, the catheter and the connector can be conveniently connected, after the arc-shaped plates move by a certain distance, round rods can be driven to slide into inclined grooves of the guide groove, and therefore the arc-shaped plates drive gaskets at the two ends of a shell to abut against the outer walls of a dialysis catheter and a dialysis bag catheter respectively, and the catheter is conveniently connected with the connector. Further, the gasket can drive the dialysis catheter and the dialysis bag catheter to move oppositely after continuously moving, so that gaps between the dialysis catheter and the dialysis bag catheter and the inner wall of the shell can be reduced while the positions of the dialysis catheter and the dialysis bag catheter in the shell are fixed, and the overall sealing performance is improved.

The invention provides a dialysis catheter based on a swirl flow technology, and relates to the field of dialysis catheters.The dialysis catheter comprises a connecting mechanism, the connecting mechanism comprises a connecting block, a vein connecting pipe and an artery connecting pipe, and a catheter mechanism is arranged at the bottom of the connecting mechanism; the catheter mechanism comprises a venous catheter, a venous side hole, an arterial catheter, an arterial side hole and a spiral flow induction unit, the inner wall and the outer wall of the catheter mechanism are each provided with a nano-coating mechanism, and each nano-coating mechanism comprises a copper nano-particle coating and a black phosphorus nano-coating. By arranging the spiral flow inducer, blood pressure is rotated, the wall surface shear stress of the inner wall of an artery cavity is improved, the risk of thrombus generation is reduced, wall suction is effectively prevented by arranging the vein side hole and the artery side hole, and the thrombus generation risk is reduced. Through cooperation of the copper nanoparticle coating, the black phosphorus nano coating and the graphene oxide coating, the coating has multiple antibacterial mechanisms such as contact sterilization, ion interference, oxidative stress induction and the like.

The invention relates to a guide wire for a peritoneal dialysis indwelling catheter and an indwelling catheter device, and belongs to the technical field of medical instruments. In order to reduce the probability that the guide wire scratches or punctures the peritoneum, the intestinal tract or the blood vessel in the peritoneal dialysis indwelling catheter operation, improve the operation safety and reduce the operation difficulty, the invention provides the guide wire for the peritoneal dialysis indwelling catheter. The guide wire comprises a body, an expansion piece and an expansion piece, the expansion piece is arranged at one end of the body and provided with an expansion cavity, and the side face, away from the body, of the expansion piece is an arc face. And the expanding piece is connected with the main body and is used for expanding or shrinking the expanding piece. In practical application, the guide wire is matched with the dialysis catheter to realize catheter placement operation. The expansion piece arranged on the guide wire head can change the shape of the guide wire head, increase the contact area of the guide wire head and parts such as peritoneum, intestinal tract or blood vessels in the operation process, buffer the pressure applied to the peritoneum, intestinal tract or blood vessels by the guide wire, reduce the probability that the guide wire scratches or punctures the peritoneum, intestinal tract or blood vessels, improve the operation safety and reduce the operation difficulty.

The invention provides a method and device for removing a broken pipeline in a dialysis catheter, and the method comprises the steps: heating the corresponding region of the dialysis catheter and the broken pipeline, applying negative pressure to the dialysis catheter after the broken pipeline in the dialysis catheter expands with heat and contracts with cold, and sucking out the broken pipeline in the dialysis catheter by using a siphon principle. By means of thermal expansion and cold contraction and the siphon principle, the broken pipeline in the dialysis catheter can be rapidly removed, and the infection risk in the removal process is low.

The invention discloses a double-cavity dialysis catheter, and belongs to the technical field of hemodialysis, the double-cavity dialysis catheter comprises a catheter body, one end of the catheter body is communicated with a first branch pipe and a second branch pipe through a connecting piece, an exhaust mechanism is arranged on the outer side of the catheter body, and the exhaust mechanism comprises an auxiliary main pipe communicated with the surface of the catheter body; a shielding assembly is arranged at the end, close to the catheter body, of the auxiliary main pipe, the shielding assembly comprises a shielding cylinder installed in the auxiliary main pipe, and a liquid inlet hole for guiding in sterile normal saline is formed in the upper half section of the shielding cylinder. Gas in the catheter can be effectively separated and discharged, sterile normal saline is guided in through the liquid inlet hole in the upper half section of the shielding cylinder, the risk that gas enters blood circulation of a patient to cause gas embolism is avoided through the design, the safety of the hemodialysis process is guaranteed, and the quality of dialysis treatment is improved.

The utility model relates to the technical field of dialysis catheters, and discloses a rotatable and fixed temporary dialysis catheter structure which comprises a main butt joint assembly and two infusion tubes, the upper end of the main butt joint assembly is provided with two replacement assemblies used for enabling the two infusion tubes to be in butt joint with the main butt joint assembly, and the two sides of the upper end of the main butt joint assembly are further provided with clamping assemblies. The components can effectively prevent the replacement component from reversing after rotating and fixing, the device adopts a threaded screwing connection mode, so that the connection between the replacement component and the main butt joint component is tighter, and meanwhile, through the matching of the clamping component and the replacement component, even when a patient moves, the replacement component can be prevented from reversing. The replacement assembly and the main butt-joint assembly can be effectively prevented from loosening or falling off, and due to the design, the safety of dialysis treatment is improved, the continuity of treatment is ensured, and more reliable dialysis treatment experience is provided for a patient.

The application belongs to the technical field of medical devices, and discloses a peritoneal dialysis catheter sealing connector, which comprises a shell and further comprises a limiting assembly movably connected to the inside of the shell, and a rotating assembly movably connected to the middle of the outer wall of the shell. The cooperation between the structures such as the rotating drum, the arc groove, the arc plate and the guide groove facilitates the connection of the catheter and the connector. After the arc plate moves a distance, the circular rod is driven to slide into the inside of the guide groove inclined groove, so that the several arc plates drive the gaskets at both ends of the shell to abut against the outer walls of the dialysis catheter and the dialysis bag catheter respectively, and then the gaskets continue to move to drive the dialysis catheter and the dialysis bag catheter to move towards each other, so that the positions of the dialysis catheter and the dialysis bag catheter in the shell are fixed, and the gap between the two and the inner wall of the shell is reduced, thereby improving the overall sealing performance.

The invention belongs to the technical field of medical equipment, and discloses an intelligent hemodialysis catheter fixing device based on dynamic pressure feedback, which comprises a bandage, a limiting seat is fixed at the top end of the bandage, a vibration mechanism is mounted in the limiting seat, and an air blowing mechanism is mounted in the limiting seat. Through cooperation of a micro motor, a connecting rod, an eccentric wheel and other structures, when the dialysis catheter body is placed into the body of a patient for dialysis for a long time, the dialysis catheter body can be fixed to a connecting base through a limiting nut, at the moment, the two sides of a limiting plate are close to first reset springs, and the micro motor is started to drive the connecting rod and the eccentric wheel to rotate; when the eccentric wheel rotates, the eccentric wheel continuously makes contact with the top end of the limiting plate and presses the limiting plate downwards to generate deformation, when the eccentric wheel is disengaged, the limiting plate is reset through the first reset spring, the limiting plate vibrates, the thrombus forming probability is reduced, and therefore the purpose that the thrombus forming probability is reduced when the device is fixed is achieved.

The invention discloses a multifunctional dialysis catheter and a dialysis system thereof. The multifunctional dialysis catheter comprises a central tube and two dialysis joints communicated with the central tube, the central tube comprises an operating head, a connector and a working tube; two shunting channels corresponding to the dialysis joints are formed in the connector, and the shunting channels are communicated with the dialysis joints respectively; two independent channels corresponding to the flow dividing channels are formed in the working pipe, inlets of the independent channels are communicated with the flow dividing channels at the near end of the working pipe, and outlets of the independent channels are formed in the side face of the far end of the working pipe; a magnetic control section and a bending adjusting section are arranged at the far end of the working pipe; the magnetic control section is provided with a sealing piece, and the sealing piece is used for opening or closing the outlet of the independent channel according to the control of external magnetic equipment; and the bending adjusting section is bent under the control of the operating head. Remote opening and closing are achieved through the magnetic control section, and the pollution risk caused by manual adjustment is avoided; the far-end bending of the working tube is realized through the bending adjusting section, the blood vessel shape is adapted, and the implantation injury is reduced.

This utility model discloses a catheter seat assembly and a long-term dialysis catheter. The catheter seat assembly includes a catheter seat, a supporting inner tube, a locking outer tube, and a fixing ring. The catheter seat has a first end and a second end, which are detachably connected to an extension tube and a dialysis main tube, respectively. The supporting inner tube supports the proximal inner wall of the dialysis main tube and is placed inside the second end of the catheter seat. The locking outer tube is sleeved outside the supporting inner tube and wraps around the proximal end of the dialysis main tube, and is connected to the second end of the catheter seat. The fixing ring is sleeved outside the locking outer tube and locks the locking outer tube radially along the dialysis main tube to the proximal end of the dialysis main tube. In this utility model, the catheter seat assembly, through optimized structural design, is detachably connected to the dialysis main tube. When the catheter seat becomes blocked, it can be separated from the dialysis main tube by disassembling the catheter seat assembly, requiring only the replacement of the catheter seat assembly.

The dialysis catheter replacement connector comprises a flow divider, a first catheter, a second catheter and a third catheter, one end of the first catheter and one end of the second catheter are communicated with one end of the third catheter through the flow divider, and the other end of the first catheter is provided with a one-way valve used for inserting a guide wire. The other end of the second catheter is provided with a second catheter connector used for being connected with a radiography syringe, and the third catheter is provided with a third catheter connector used for being connected with the shearing opening of the built-in catheter. According to the dialysis catheter replacement tube connector, radiography and placement of a guide wire into the body of a patient can be conducted at the same time, operation of a doctor is facilitated, operation risks are reduced, and medical safety is improved; the catheter infection probability in the catheter replacement process can be further reduced; the blood loss of a patient can be reduced, the surgical tolerance of the patient is improved, and the postoperative recovery time is prolonged; the medical experience of the patient can be improved, and the satisfaction degree of the patient is improved.

The utility model provides a catheter fixator for hemodialysis, and belongs to the technical field of medical instruments. Comprising a fixing plate, a limiting mechanism is arranged at the top end of the fixing plate, the limiting mechanism is used for limiting a catheter, hook-and-loop fasteners are fixedly connected to the two sides of the fixing plate, the hook-and-loop fasteners are used for fixing the fixing plate, and a catheter limiting plate is fixedly connected to the top end of the fixing plate. The fixing plate is matched with the limiting mechanism to clamp a dialysis catheter, so that the dialysis catheter is limited and fixed, the situation that the dialysis catheter displaces and influences dialysis is avoided, the hook-and-loop fasteners are fixedly connected to the two sides of the fixing plate, the fixing plate can be tied to the limbs of a patient, and therefore the catheter fixator is worn, and the operation is convenient. The catheter limiting plate fixedly connected to the top end of the fixing plate can be used for placing and protecting the dialysis catheter, and the situation that the catheter is damaged due to the fact that foreign objects are prone to making contact with the catheter is avoided.

The peritoneal dialysis catheter protective sleeve comprises a flexible sleeve, a first opening and a second opening are formed in the two ends of the flexible sleeve in the length direction of the flexible sleeve respectively, a notch extending in the length direction of the sleeve is formed in the peripheral wall of the sleeve, and the sleeve can deform to expand the notch. The first opening is used for allowing the dialysis catheter to penetrate through, the second opening is used for allowing the titanium connector to penetrate through, a positioning groove is formed in the inner circumferential wall of the second opening, and the positioning groove is used for being matched with a concave part of an external short pipe. According to the peritoneal dialysis catheter, it can be guaranteed that the joint of the titanium connector and the peritoneal dialysis catheter is not prone to being folded and bent, abrasion of the titanium connector and the peritoneal dialysis catheter is prevented, and therefore the peritoneal dialysis catheter is protected against breakage and seepage, and peritonitis is avoided. Meanwhile, the positioning groove is matched with the concave part of the external short pipe, so that the external short pipe can be protected from falling off due to various accidents to a certain extent.

The technical problem to be solved by the utility model is to provide the negative-pressure waterproof device for the peritoneal dialysis catheter, and the negative-pressure waterproof device is simple to operate and can effectively reduce the risk that the membrane dialysis catheter is stained with water. The negative-pressure waterproof device for the peritoneal dialysis catheter comprises a containing shell, a connecting pipe is arranged at the lower end of the containing shell, a suction cup is arranged at the lower end of the connecting pipe, a negative-pressure pipe is arranged at the upper end of the shell, a one-way air inlet valve is arranged in the negative-pressure pipe, a sealing cover is arranged at the upper end of the negative-pressure pipe, and an air inlet pipe is arranged on the side wall of the negative-pressure pipe. A sealing plug is arranged on the air inlet pipe, the containing shell is vacuumized through the vacuumizing pump, in the vacuumizing process, the suction cup can be adsorbed to the skin, the waterproof purpose is achieved, after use, only the sealing plug needs to be opened, external air is sucked in through the air inlet pipe, and the suction force between the suction cup and the skin can be reduced accordingly; therefore, the peritoneal dialysis catheter can be taken out of the storage shell, and the operation is simple.

The utility model discloses a special dressing for binding the tail end of dialysis pipeline maintenance, which comprises a main body unit, the main body unit comprises a first gauze, a second gauze and a dialysis catheter tail end, the first gauze and the second gauze are fixed, and the second gauze can be turned over. The tail end of the maintained dialysis catheter is placed on the remaining part, then the gauze II is stacked on the gauze I, so that the tail end of the dialysis catheter is covered between the gauze I and the gauze II, and then the gauze II and the tail end of the dialysis catheter are bonded and fixed through the adhesive tape III; then the first folding part and the second folding part are folded in the direction close to the tail end of the dialysis catheter along the first folding mark and the second folding mark respectively, then the fifth lining paper and the third lining paper are torn down, and the first adhesive tape and the second adhesive tape are turned over, so that the first adhesive tape and the second adhesive tape are bonded with the legs of the patient; and at the moment, the first adhesive tape and the second adhesive tape can fix the folded first folding part and the folded second folding part, the firmness is good in the mode, and operation is very convenient and fast.

This invention belongs to the field of intelligent sensor technology and discloses a method, system, and dialysis catheter for monitoring multimodal blood infections. The method includes: collecting and analyzing pressure and temperature data to obtain pressure time-frequency spectrum and temperature correction matrix; extracting features from the pressure time-frequency spectrum and temperature correction matrix to obtain analytical features, including pressure features, temperature features, and cross features; acquiring synthetic data and clinical data, and combining transfer learning to build a domain adversarial neural network to analyze the real-time analytical features and obtain predicted values ​​of patient infection risk probability and inflammatory factor concentration range; obtaining patient baseline data, and dynamically adjusting the pressure fluctuation tolerance bandwidth and temperature rise slope threshold based on reinforcement learning according to the patient infection risk probability and inflammatory factor concentration range predicted values ​​to generate personalized alarm commands. This invention can provide early warning of infection risk, reduce false alarm rate and false negative rate, and provide an intelligent and personalized solution for early intervention of blood infections.

The application provides a jugular vein dialysis catheter joint disinfection sealing fixing device, which comprises a shell, disinfection wiping mechanisms, a sealing outer bag, an arteriovenous catheter joint sealing inner bag, a strip-shaped elastic head cover and an ear cover; a partition plate is horizontally arranged in the shell; an upper cavity is formed above the partition plate in the shell; the disinfection wiping mechanisms are arranged below the partition plate in the shell and close to the front side and the rear side; the sealing outer bag is placed in the upper cavity of the shell; and the arteriovenous catheter joint sealing inner bag is arranged in the sealing outer bag in front and behind. In the insertion process of the arteriovenous catheter joint, the disinfection wiping mechanisms are driven to rotate, the elastic scraping blade is slid and scrapes off dirt (such as blood scabs) in the thread groove, the arteriovenous catheter joint is reduced to be exposed to the outside world, the probability of contamination of the arteriovenous catheter joint is reduced, the workload of medical staff is reduced, and pollution caused by manual operation of the medical staff is avoided.

The utility model relates to the technical field of medical instruments, in particular to a heparin cap protection device which comprises a dialysis catheter infusion end, the right end of the dialysis catheter infusion end is connected with a heparin cap through threads, the outer side of the heparin cap is movably sleeved with a nylon opening sleeve, and the dialysis catheter infusion end is located in the nylon opening sleeve. The upper side and the lower side of the nylon opening sleeve are respectively provided with a power assisting plane, and the top of each power assisting plane is fixedly provided with an adjusting main strip. Through the cooperation of the circular ring locking strip, the positioning strip and other structures, the connection firmness of the heparin cap and the infusion end of the dialysis catheter is enhanced, operation is easy, convenient and rapid, a large number of medical resources and labor cost are saved, meanwhile, the fixing effect is remarkable, and efficiency is extremely high.

A method of clearing a blood clot in a dialysis catheter is provided. The method includes providing a medication reservoir containing clot dissolving medication, an infusion catheter, and an infusion catheter placement guide; accessing an exposed opening of the dialysis catheter; inserting a distal end of the infusion catheter into the exposed opening of the dialysis catheter; advancing the distal end of the infusion catheter through the exposed opening of the dialysis catheter; retracting the infusion catheter back into the dialysis catheter; after determining the location of the distal end of the infusion catheter in relation to the distal end of the dialysis catheter, performing a final adjustment of the location of the distal end of the infusion catheter; and providing medication through the infusion catheter, and out of the distal end of the infusion catheter, to the blood clot to dissolve the blood clot.

The utility model belongs to the field of medical catheter instruments, and particularly relates to a dialysis catheter. Comprising a catheter extending in the longitudinal direction, the catheter comprises a catheter body at the far end and at least two auxiliary catheters communicated with the near end of the catheter body, inner cavities correspondingly communicated with the auxiliary catheters are formed in the catheter body, and side holes corresponding to the far ends of the inner cavities are formed in the catheter body; the base is connected to the near end of the auxiliary catheter and is communicated with the connected auxiliary catheter. The whole dialysis catheter is buried subcutaneously, the wound of the puncture medical instrument to the skin is small and easy to recover, the infection risk is greatly reduced, the base is not exposed out of the body and is relatively stably connected with the skin, the risk that the base is accidentally dragged out does not exist, and the influence on the life of a patient is also remarkably reduced. In addition, sterile liquid can be injected into the dialysis catheter through the side hole, so that the catheter cannot be tightly attached to the superior vena cava, the probability of thrombus formation is reduced, and the dialysis catheter has the advantages of being not prone to infection, small in influence on life and friendly to patients.

The utility model discloses an adjustable long-term dialysis catheter fixing and protecting bag. The protecting bag aims at solving the problem that in the prior art, a catheter is fixed through adhesive tape, and consequently skin allergy occurs. The protection bag comprises a bottom bag and an upper bag arranged above the bottom bag, the upper bag is fixed to the bottom bag to form a pocket, the pocket is used for containing a catheter, two round holes are formed in the upper bag, adjustable tying belts are installed in the round holes, and a fixing part for fixing the catheter is installed on the bottom bag. The catheter is fixed in the pocket, and the bottom bag and the upper bag are made of cotton cloth, so that the influence of irritation and the like on the skin can be avoided when the bag is in contact with the skin of a patient, and the adverse effects of residual glue on the skin body surface, itching, allergy, medical adhesive-related skin injury and the like caused by traditional adhesive tape fixation can be avoided; and the comfort of the patient is improved, so that the satisfaction degree of the patient is improved.

The invention discloses a hemodialysis catheter anti-falling fixing device with an intelligent alarm function in the technical field of hemodialysis equipment, and the hemodialysis catheter anti-falling fixing device comprises elastic binding bands, the elastic binding bands are annular hollow bands, sealing layers are arranged in the hollow bands, and inner partition plates are fixedly mounted between the elastic binding bands; the annular elastic bandage is divided into a small closed ring and a large closed ring by the inner partition plate, a clamping mechanism is installed in the small closed ring, a pressure sensor is fixedly installed on the side, close to the large closed ring, of the inner partition plate, the clamping mechanism comprises a lower clamping piece and an upper clamping piece, and the lower clamping piece and the upper clamping piece can fix a hemodialysis catheter between the lower clamping piece and the upper clamping piece; according to the hemodialysis tube fixing device, the hemodialysis tube fixing device is stably fixed to the arm of a patient through the elastic bandage, the hemodialysis tube is fixed through the clamping mechanism in the elastic bandage, and therefore the hemodialysis tube can synchronously move along with the elastic bandage and the arm of the patient; the positioning firmness of the elastic bandage is monitored by the pressure sensor.

A dialysis catheter with an elongate body has a distal end defining blood removal and return ports communicating with internal blood removal and return lumens extending through the elongate body. A sensing pathway is disposed in or on the elongate body. A vascular dimension sensor is provided to dynamically measure changes in dimension of the SVC or IVC during dialysis. The sensor communicates with a control system and may be controlled or positioned via the communication pathway of the catheter body. Systems disclosed included integrated closed-loop treatment based on monitored vascular dimension input. Methods included patient optimized treatments incorporating treatment modulation based on dynamic vascular dimension monitoring.

The utility model belongs to the field of medical instruments, and particularly relates to a wrapping and fixing device for an extension tube connector of a hemodialysis catheter. The device comprises a dialysis catheter and a fixing pad, the front side wall of the fixing pad is detachably connected with a wrapping bag with an opening in one end, a catheter connector of the dialysis catheter is located in the wrapping bag, a wrapping pad used for wrapping the catheter connector is fixed in the wrapping bag, and an adhesive tape used for sealing the wrapping bag is pasted to the inner wall of the opening of the wrapping bag. A hose used for exhausting air in the bag is installed at the other end of the wrapping bag in a penetrating mode, a connector used for sealing the hose and being connected with an injector is installed on the hose, a fixing assembly used for fixing the fixing pad to the abdomen or the chest of a patient is connected to the fixing pad, and a skin-friendly layer is fixed to the rear side wall of the fixing pad. According to the utility model, air in the wrapping bag is sucked out, so that the wrapping pad can quickly wrap the tube joint of the dialysis catheter, and the dialysis catheter is more comfortable to wear for a longer time and has smaller harm to the skin of a patient.

The invention provides a disinfecting, sealing and fixing device for an internal jugular vein dialysis catheter connector. The disinfecting, sealing and fixing device comprises a shell, a disinfecting and wiping mechanism, a sealing outer bag, an arteriovenous catheter connector sealing inner bag, a strip-shaped elastic head sleeve and ear sleeves. A partition plate is transversely arranged in the shell, an upper cavity is formed in the shell and located above the partition plate, and disinfection wiping mechanisms are arranged in the shell and located below the partition plate and close to the front side and the rear side. The sealing outer bag is placed in the upper cavity of the shell, and the sealing inner bags of the arteriovenous catheter connector are arranged in the sealing outer bag in tandem. In the inserting process of the arteriovenous catheter connector, the disinfecting and wiping mechanism is driven to rotate, the elastic scraper slides and scrapes dirt (such as blood scabs) in the threaded groove, the possibility that the arteriovenous catheter connector is exposed to the outside is reduced, the probability that the arteriovenous catheter connector is polluted is reduced, the workload of medical staff is reduced, and the working efficiency of the medical staff is improved. And pollution caused by manual operation of medical staff is avoided.

The catheter seat assembly comprises a catheter seat, a supporting inner tube, a locking outer tube and a fixing ring, the catheter seat is provided with a first end and a second end, and the first end and the second end are detachably connected with an extension tube and a dialysis main tube respectively; the supporting inner tube is used for supporting the inner wall of the near end of the dialysis main tube and is arranged in the second end of the catheter seat; the locking outer tube is arranged outside the supporting inner tube in a sleeving manner, wraps the near end of the dialysis main tube and is connected with the second end of the catheter seat; the fixing ring is arranged outside the locking outer tube in a sleeving mode and locks the locking outer tube to the near end of the dialysis main tube in the radial direction of the dialysis main tube. According to the scheme, the catheter seat assembly is detachably connected with the dialysis main pipe through structural optimization design, and when the catheter seat is blocked, the catheter seat assembly can be detached, the catheter seat assembly and the dialysis main pipe can be separated, and only the catheter seat assembly is replaced.