63 results about "Dialysis catheter" patented technology

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 utility model relates to the technical field of medical supplies, and particularly discloses an anti-pressing device for a hemodialysis catheter, which comprises a plurality of anti-pressing bodies which are movably connected in sequence, the pressure-proof body comprises a first half tube, a second half tube and at least one flexible connecting valve, and the first half tube and the second half tube are connected in a hinged mode; the first half tube and the second half tube are matched with each other and are used for forming a tubular structure body which is arranged outside the hemodialysis catheter in a sleeving manner; the adjacent tubular structural bodies are connected through the flexible connecting valves; the anti-pressing device for the hemodialysis catheter can be arranged on the periphery of the hemodialysis catheter in a sleeving mode, the hemodialysis catheter can be prevented from being pressed, and a good protection effect is achieved.

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 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 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 utility model provides a hemodialysis catheter fixing device, and relates to the technical field of hemodialysis catheter fixing devices, the hemodialysis catheter fixing device comprises a fixing plate, a fixing structure is arranged on the fixing plate, the fixing structure is mainly composed of two first limiting blocks, the two first limiting blocks are both arranged on the fixing plate, and the first limiting blocks are arranged on the fixing plate. A first limiting block is arranged on the base, a rotating shaft is rotationally connected to the first limiting block, a second limiting block is fixedly connected to the rotating shaft, rubber blocks are fixedly connected to the first limiting block and the second limiting block, a connecting block is fixedly connected to the first limiting block, and a connecting groove is formed in the second limiting block; the hemodialysis catheter fixing device solves the problem that the hemodialysis catheter between a hemodialysis instrument and a patient naturally falls down under the action of gravity and scatters on the ground due to the fact that an existing hemodialysis catheter is usually directly fixed on the hemodialysis instrument, a venous catheter and an arterial catheter are prone to being wound, and the hemodialysis effect is affected.

The utility model relates to the technical field of medical instruments, in particular to a peritoneal dialysis catheter nursing bag which comprises a nursing bag body. The protective cover is hinged to one side of the top of the nursing bag main body, and a handle is fixedly mounted at the top of the protective cover. The pressing plate is arranged at the top of the circular truncated cone, the inserting groove is formed in the center of the pressing plate, the limiting piece penetrates through the inserting groove in a matched mode, after the guide pipe body is wound around the periphery of the circular truncated cone, the pressing plate can be placed at the top of the circular truncated cone, the limiting piece penetrates through the inserting groove, and then the pressing plate can be fixed to the top of the circular truncated cone by rotating the limiting piece. And the catheter body can be prevented from falling off from the periphery of the circular truncated cone, and the storage stability of the catheter body can be guaranteed.

This invention provides a peritoneal dialysis catheter repositioning device, comprising a catheter body, a sliding plug, a gas delivery device, and an external magnet. The catheter body is inserted into the peritoneal dialysis catheter. The sliding plug is slidably disposed within the catheter body. A plate-shaped internal magnet is embedded within the sliding plug; the magnetic poles of the internal magnet are perpendicular to the axis of the catheter body. The gas delivery device forces the sliding plug forward within the catheter body to the desired segment of the peritoneal dialysis catheter for adjustment. The external magnet attracts or repels the internal magnet, thereby adjusting the catheter segment to the set position. This invention can utilize the attractive force between the external magnet and the internal magnet to move a segment of the catheter outward, or utilize repulsive force to move the segment inward. Each adjustment is a localized adjustment of the peritoneal dialysis catheter's position, not only repositioning the catheter but also adjusting and repositioning the catheter's embedding shape within the peritoneal cavity.

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.

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.

The utility model discloses a titanium joint disinfection bottle which comprises a disinfectant bottle, a disinfection bottle plug and a catheter clamp, the size of a bottle opening of the disinfectant bottle is matched with the size of the lower end of the catheter clamp, the size of the disinfection bottle plug is matched with the size of a bottle opening of the disinfectant bottle, and a catheter groove is formed in the edge of the surface of the disinfection bottle plug. The catheter clamp, the disinfection bottle plug and the disinfectant bottle are sequentially connected. Compared with the prior art, the position peritoneal dialysis catheter does not need to be wrapped by gauze, and the peritoneal dialysis catheter can be clamped flat without damage. The disinfection bottle does not need to be manually held in the disinfection process, the body position of an operator is not limited, and it can be guaranteed that the titanium connector is soaked and disinfected, and a disinfectant is not splashed out.

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 invention provides a hemodialysis catheter fixing device, and belongs to the technical field of medical instruments. Comprising a base and a fixing bandage arranged on the base, a plurality of catheter clamping assemblies are arranged on the upper surface of the base in a sliding mode, and the catheter clamping assemblies are used for positioning and fixing hemodialysis catheters; the catheter clamping assembly comprises an upper fixing seat and a lower fixing seat which can be opened, a first groove is formed in the lower surface of the upper fixing seat, and a movable plate is arranged on the inner top wall of the first groove through an up-down adjusting assembly. According to the hemodialysis catheter fixing device, the base is stably fixed through the fixing binding band, the multiple catheter clamping assemblies are arranged on the base, and adsorption type fixing of the outer wall of a hemodialysis catheter which is soft in texture is achieved through the first adsorption parts and the two second adsorption parts in the catheter clamping assemblies by means of the suction force of gas; therefore, the hemodialysis catheter cannot contract inwards at the adsorption fixing part, and the normal flowing effect of the hemodialysis catheter is guaranteed.

This invention provides a peritoneal dialysis catheter, including a catheter body, a mounting base, and a sealing mechanism. A driving assembly moves a sealing bulb, a first balloon, and a second balloon. When the sealing bulb and the first balloon reach the first end, the second balloon is positioned within the through-hole. An inflation assembly then inflates the first and second balloons, sealing the first end and the through-hole. Alcohol is then introduced into the catheter body through the inlet tube to disinfect the inner wall of the catheter body, preventing alcohol from entering the patient's abdominal cavity and the through-hole. After disinfection, the alcohol is drained from the catheter body through the outlet tube. The inflation assembly then contracts the first and second balloons, and the driving assembly moves the sealing bulb into the through-hole to seal it, allowing dialysis to begin. This facilitates disinfection of the inner wall of the catheter body, prevents infection of the patient during dialysis, and improves the safety of the device.

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 discloses a kind of hemodialysis catheters, including main catheter, two independent lumen are provided in the main catheter, the end of two lumen is respectively provided with arterial port and venous port;The other end of the main catheter is connected with the extension tube that is communicated with two lumen respectively, two The extension tube is all provided with stop clamp, and end portion is connected with luer joint, the main catheter is provided with suture wing;The side wall of the lumen where arterial port is located has blood introduction groove that is folded and is formed inwardly recessed, the blood introduction groove is located in the one end of the main catheter close to arterial port, and it extends to arterial port along the length direction of the main catheter;The blood introduction groove has blood return hole that is communicated with corresponding lumen.The utility model has the advantages of reasonable structure design, can alleviate the phenomenon of adhering to wall, is conducive to reducing manpower and material resources.

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 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.

This utility model relates to the field of medical device technology and discloses a dialysis catheter and a dialysis system. The dialysis catheter includes a catheter body. By defining a first lumen and a second lumen on the catheter body, and symmetrically arranging the distal opening trajectory of the first lumen and the distal opening trajectory of the second lumen with respect to the axis of the catheter body, the dialysis catheter can be manufactured by simple cutting. It can use both soft and hard materials, reducing the manufacturing difficulty of the dialysis catheter. Along the axial direction of the catheter body, compared with other positions on the first curve, the distance between the endpoint farthest from the interval and the dialysis device is the shortest, that is, the attraction force is the strongest at this endpoint. On the first curve, along the direction from this endpoint towards the interval, the attraction force gradually decreases until it can no longer attract liquid. This avoids the dialysis liquid that has been dialyzed from mixing with the liquid to be dialyzed in related technologies, which would reduce dialysis efficiency, thereby improving the dialysis efficiency of the dialysis catheter.

This utility model belongs to the field of medical tools, specifically disclosing a hemostatic compression device for hemodialysis catheters, including a shawl, a compression airbag assembly fixed to the inside of the shawl, an air pump, and a pressure monitoring assembly. The compression airbag assembly includes at least two independent first and second airbags. The first airbag is a cylindrical, point-like compression airbag used to compress the internal jugular vein puncture site, and the second airbag is a long, rectangular, linear compression airbag used to comprehensively compress the subcutaneous tunnel. The two airbags are connected to the air pump connector via independent inflation tubes, and the connector contains a one-way valve. The shawl has a fixing and adjustment structure consisting of buckles and nylon hook and loop fasteners. This device achieves effective hemostasis at different bleeding sites after TCC catheter placement through a precise point-line compression method, replacing manual pressure. The hemostatic effect is clear and reliable, the operation is convenient, and the pressure is adjustable and controllable.

The application discloses a peritoneal dialysis catheter intelligent metering and clamping device, which comprises a structural shell provided with a catheter embedding groove, and a clamping buckle is arranged on the structural shell at the opening side of the embedding groove; the structural shell is integrated with a clamping execution and flow rate control module, a flow monitoring module and a data processing module; the clamping execution and flow rate control module is used for controlling the filling speed, dosage and on-off of a filling pipe or a drainage catheter; the flow monitoring module is used for monitoring the drainage flow of dialysate in a drainage pipeline; the data processing module is used for controlling the opening and closing of various electrical elements and the conversion of flow data; a power supply unit is used for the power supply of the whole device; the structural shell is provided with a touch module used for controlling the opening and closing and adjustment of the clamping execution and flow rate control module and a display module used for the intuitive display of flow rate and flow data. The application is convenient for operators to carry and has few operation environment restrictions, is suitable for various scenes, meets the effective clamping and drainage metering of patients with poor eyesight, insufficient hand strength and poor self-care ability in the peritoneal dialysis treatment process, and has high practicability.

The application belongs to the technical field of medical equipment, and discloses a hemodialysis catheter intelligent fixing device based on dynamic pressure feedback, which comprises a binding belt, the top end of the binding belt is fixed with a limiting seat, a vibration mechanism is installed in the limiting seat, and a blowing mechanism is installed in the limiting seat. Through cooperation of the structures such as the micro motor, the connecting rod and the eccentric wheel, the device can fix the hemodialysis catheter body on the connecting seat through the limiting nut when the hemodialysis catheter body is placed in the patient's body for a long time for dialysis. At this time, the limiting plate is close to the first reset spring on both sides, the micro motor drives the connecting rod and the eccentric wheel to rotate, the eccentric wheel continuously contacts the top end of the limiting plate when rotating, and the limiting plate is deformed by being pressed down, and the first reset spring resets the limiting plate when the eccentric wheel is separated, so that the limiting plate vibrates, the probability of thrombosis is reduced, and the purpose of reducing the probability of thrombosis when the device is fixed is achieved.

The utility model discloses an adjustable neck dialysis catheter fixing device, including strip body, a plurality of magic tape sub pastes and female pastes are provided on the strip body, including: the left outer side of strip body is equipped with magic tape first sub paste, and the right inner side is equipped with magic tape first female paste matched with magic tape first sub paste, still be equipped with magic tape second female paste and magic tape second sub paste in magic tape first sub paste beside the left outer side of strip body, be equipped with 1 / 2 width magic tape third sub paste in the right outer side of strip body, and its inner side is equipped with 1 / 2 width magic tape fifth female paste and magic tape third female paste connected with magic tape third sub paste, the right outer side of strip body is equipped with magic tape fourth sub paste and magic tape fourth female paste in magic tape third sub paste and magic tape third female paste 5cm place beside.

The invention belongs to the field of functional medical catheter preparation, and particularly relates to an antibacterial and anticoagulant dialysis catheter with a sodium alginate-graphene oxide coating and a preparation method of the antibacterial and anticoagulant dialysis catheter. The preparation method comprises the following steps: (1) mixing a graphene oxide dispersion liquid with a sodium alginate solution, then adding a water / alcohol mixed solvent, and then carrying out ultrasonic dispersion treatment to obtain a mixed solution; (2) performing plasma pretreatment on the polyurethane dialysis catheter to obtain a pretreated catheter; (3) immersing the pretreated conduit into the mixed solution, and after dip-coating is completed, sequentially standing and drying to obtain a primary gel layer conduit; and (4) immersing the primary gel layer catheter into a cross-linking solution, and then sequentially cleaning, gradient heating and curing. Efficient antibiosis and anticoagulation are achieved through the synergistic effect of materials, the coating is firm in combination and excellent in biocompatibility, the problems of thrombus formation, infection and the like of an existing dialysis catheter can be solved, and the coating is suitable for hemodialysis vascular access.

The utility model relates to a hemodialysis catheter fixing device in the technical field of medical instruments, which comprises a first clamping piece, a second clamping piece and a third clamping piece, the first clamping piece comprises an elastic arc-shaped plate made of plastics, and the arc-shaped plate clamps a round bedside handrail during use and can be rotatably adjusted based on the round bedside handrail; the second clamping piece is at least provided with a catheter locking groove used for locking the catheter and allowing the catheter to penetrate through, and the second clamping piece is connected with the first clamping piece. Compared with the prior art, the structure is more simplified, only the first clamping piece and the second clamping piece need to be arranged, and operation is very convenient. The arc-shaped plate of the first clamping piece is driven by the elasticity of the arc-shaped plate to clamp the bedside handrail, and the position of the catheter is fixed by the catheter locking groove of the second clamping piece, that is, the catheter can be firmly fixed at the position of the side edge of a sickbed only by inserting the catheter into the catheter locking groove.

This utility model relates to the field of medical device technology, and in particular to a pressure-resistant device for hemodialysis catheters. The technical solution is as follows: A pressure-resistant device for hemodialysis catheters includes a dialysis catheter assembly disposed on the top of the epidermal layer, with a pressure-resistant component on one side of the dialysis catheter assembly. The dialysis catheter assembly includes a dialysis main tube, which is fixedly installed on the top of the epidermal layer by the pressure-resistant component. The spring and arc-shaped cover plate provide elastic pressure protection for the dialysis main tube. When external pressure is applied, the spring buffers the pressure, preventing direct compression of the dialysis main tube and reducing the risk of damage or impaired dialysis function due to pressure. The positioning groove and positioning mark ensure accurate installation of the pressure-resistant component on the dialysis main tube, ensuring precise alignment of the components, guaranteeing the stability and reliability of the pressure-resistant effect, and facilitating rapid installation and use of the device.

The utility model relates to the field of medical auxiliary devices, in particular to an arm fixing and protecting device for hemodialysis, which comprises an arm protecting component, a tube protecting component and a posture adjusting component. The arm protection assembly is provided with a first air bag, a first arm protection block and a second arm protection block, the first arm protection block and the second arm protection block can clamp and protect an arm, the second arm protection block is driven by expansion of the first air bag to slide, the tube protection assembly is provided with an upper protection plate and a lower protection plate which can clamp and protect a dialysis catheter, and the lower protection plate is fixedly connected to the upper portion of the first arm protection block. The posture adjusting assembly is provided with a second air bag and a spring, is hinged to the lower portion of the arm protection assembly and can drive the arm protection assembly to swing front and back. The first air bag and the second air bag which are provided with the air inlet and the air outlet which are controlled by the electromagnetic valves are used for driving the second arm protection block to slide and driving the arm protection assembly to slightly swing respectively, so that a patient can independently clamp the arm and adjust the tightness degree, and the posture of the arm can be slightly changed for simple movement; therefore, the convenience and the comfort of the operation of the patient during dialysis can be improved.