62 results about "Catheters dialysis" patented technology

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 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 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 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 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 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.

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 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.

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 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.

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.

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.

The utility model relates to the field of medical apparatus and instruments, in particular to an antibacterial and waterproof bag for bathing, which comprises a bag body, a first opening communicated with the interior of the bag body is formed in one side of the bag body; the first cloth piece is made of non-woven fabric, one side of the first cloth piece is fixed to the bag body, and the first cloth piece is arranged around the first opening; and one side of the first adhesive tape is adhered to the other side of the first cloth piece. According to the antibacterial and waterproof bag for bathing, the problem that a patient carrying a dialysis catheter is difficult to protect the body of the patient and a connecting port of the dialysis catheter through a low-cost means during bathing can be solved, so that the body of the patient and the connecting port of the dialysis catheter can be protected during bathing of the patient carrying the dialysis catheter; and the method has the advantage of low cost.

The utility model discloses a retention protection application for hemodialysis, which relates to the technical field of hemodialysis, aims to solve the technical problem that a hemodialysis catheter is poor in fixing comfort, and comprises a fixing bottom piece made of latex materials, the fixing bottom piece is composed of an outer wrapping edge and a hollow area located in a central area, and the outer wrapping edge is provided with an inner wrapping edge and an outer wrapping edge. A fixing layer adheres to the surface of the outer wrapping edge, the hollow area is provided with an air bag layer used for pressing and fixing the dialysis catheter, the air bag layer is communicated with a plurality of expansion wrapping layers, restoring structures are arranged in the expansion wrapping layers, a pressing connection piece is arranged on one side of the surface of the outer wrapping edge, and the pressing connection piece is movably fixed to the fixing bottom piece and extrudes air in the expansion wrapping layers. Fixing belts are arranged on the two sides of the outer wrapping edge, and the ends of the two fixing belts are movably fixed. According to the utility model, the fixing belt is matched with a small amount of positioning adhesive tape, and the air bag layer, the expansion wrapping layer and the recovery structure are matched, so that the fixing of multi-layer winding of the adhesive tape is replaced, and the comfort is improved.

The utility model relates to the technical field of medical instruments. A visual treatment towel for hemodialysis comprises a treatment towel body, and the treatment towel body comprises a transparent visual part and a treatment pad towel part which are connected left and right; the center of the transparent visual part is divided into a left transparent visual part and a right transparent visual part which are arranged left and right through an easy-to-tear structure; the treatment pad towel part comprises an inner non-woven fabric water absorption layer and an outer waterproof layer which are arranged inside and outside, and the center of the treatment pad towel part is divided into a left part and a right part which are arranged left and right through an easy-to-tear structure; at least two inner fixing adhesive tapes arranged from top to bottom are fixed on the inner side of the left part, the left ends of the inner fixing adhesive tapes are fixedly connected with the left part, and the inner fixing adhesive tapes are used for fixing the deep vein dialysis catheter; at least three outer fixing adhesive tapes are fixed to the outer side of the left portion, one ends of the outer fixing adhesive tapes are arranged on the left side and the right side of the left portion in a staggered mode from top to bottom, and the other ends of the outer fixing adhesive tapes extend out of the left portion. According to the utility model, the transparent visual part is additionally arranged, so that visual operation is facilitated.

The utility model provides a disposable hemodialysis treatment towel assembly which is provided with a small treatment towel and a large treatment towel which are stacked up and down, a V-shaped notch is formed in the middle of the rear edge of the large treatment towel, and the small treatment towel is stacked in the middle of the top face of the large treatment towel. An easy-to-tear medical adhesive tape is arranged at the position, close to the rear edge, of the top surface of the small treatment towel and is used for bonding and fixing the rear edge of the small treatment towel on the large treatment towel; the middle of the top surface of the small treatment towel is a pillow area; a left pocket is arranged on the left side of the top surface of the small treatment towel, and a group of medical sterile cotton swabs are inserted into the left pocket; a right pocket is arranged on the right side of the top face of the small treatment towel, and two medical sterile syringes are inserted into the right pocket. When the treatment towel assembly is used for nursing operation of the dialysis catheter end of a patient during machine dialysis, it can be guaranteed that the sterile treatment towel is used for wrapping the catheter end during machine dialysis, part of articles needed to be used for nursing operation of the catheter end can be placed in order, and therefore the disinfection time is saved, and the risk that the catheter is infected is reduced.

The invention belongs to the technical field of intelligent sensors, and discloses a blood multimode infection monitoring method and system and a dialysis catheter. The method comprises the steps that pressure data and temperature data are collected and analyzed, and a pressure time-frequency spectrum and a temperature correction matrix are obtained; performing feature extraction on the pressure time-frequency spectrum and the temperature correction matrix to obtain analysis features, wherein the analysis features comprise a pressure feature, a temperature feature and a cross feature; acquiring synthetic data and clinical data, constructing a domain adversarial neural network in combination with transfer learning, and analyzing the real-time analysis features to obtain a patient infection risk probability and an inflammatory factor concentration interval prediction value; acquiring a patient baseline, dynamically adjusting a pressure fluctuation tolerance bandwidth and a temperature rise slope threshold based on reinforcement learning according to a patient infection risk probability and an inflammatory factor concentration interval prediction value, and generating a personalized alarm instruction; according to the method, the infection risk can be early warned in advance, the false alarm rate and the missing report rate are reduced, and an intelligent and personalized solution is provided for early intervention of blood infection.

The utility model discloses an adjustable fixing device for a hemodialysis catheter, which comprises a universal hose and relates to the technical field of medical auxiliary instruments. According to the adjustable fixing device for the hemodialysis catheter, dialysis catheters with different catheter diameters can be clamped and fixed through the left clamping block and the right clamping block, when the adjustable fixing device is used, the right clamping block is pulled to be separated from the left clamping block, then the dialysis catheter is placed on the inner side of the left clamping block, then the right clamping block is loosened, a sliding block can be driven to move leftwards through the elastic force of a spring, and the hemodialysis catheter is fixed. Meanwhile, when a sliding block drives a connecting frame, a right clamping block moves leftwards, a dialysis catheter is positioned through a left clamping block, then an adjusting screw rod is rotated, a movable plate can drive a pressing block to descend through a limiting plate, when the pressing block is attached to the top face of a mounting plate, rotation of the adjusting screw rod is stopped, the connecting frame can be fixed, and catheters with different pipe diameters can be clamped; and the stability of the device for clamping the dialysis catheter is improved.