11 results about "Hemodialysis access" patented technology

The invention relates to the technical field of hemodialysis pathway monitoring, and particularly discloses a hemodialysis pathway stenosis early warning system and method based on voiceprint recognition and compression waveform matching. The system comprises an integrated acoustic-pressure control attachment module, a signal acquisition and control unit, a feature extraction module, an individual template library and a risk judgment module. By collecting blood flow pulsation sound and turbulence voiceprint in real time and combining rebound sound response induced by controllable external pressure, various dynamic parameters are extracted and compared with an individual acoustic template of a patient, and the risk level of passage stenosis is judged. The system has the advantages of being non-invasive, wearable, active in induction and individualized in recognition, and is suitable for early warning of passage stenosis of clinical dialysis patients.

The invention provides a dialysis pipeline bedrail fixing clamp capable of detecting the recirculation rate of a hemodialysis pathway, and relates to the technical field of medical instruments, the dialysis pipeline bedrail fixing clamp comprises a lower clamp body, the top of the lower clamp body is rotatably connected with an upper clamp body, one side of the lower clamp body is fixedly connected with a fixing block, the top of the upper clamp body is connected with a mounting block, and the top of the mounting block is provided with an equipment block; the fixing assembly is arranged between the upper clamp body and the lower clamp body; the rotating assembly is arranged between the mounting block and the equipment block; and the monitoring assembly is arranged in the equipment block. Bedrails of different sizes can be rapidly clamped and fixed through the fixing assembly, an equipment block can be conveniently fixed to the bedrails of different sizes, a fixing groove can face a dialysis pipeline in cooperation with the arrangement of a rotating assembly, subsequent clamping is facilitated, and through the arrangement of a monitoring assembly, on one hand, the dialysis pipeline can be fixed, and on the other hand, the dialysis pipeline can be monitored; on the other hand, the urea nitrogen level in the pipeline can be monitored, and then the recirculation rate is calculated.

An elastic dialysis stent comprises a central restrictor segment located between two tapered segments. The tapered segments are tapered from a larger diameter suitable for joining to tubular graft segments or attaching the stent in a graft or fistula, to the narrower diameter of the elastic central restrictor segment which provides a stenosis. The central restrictor is made of an elastic material which enables the stent to be radially expanded by a balloon catheter to a larger diameter for passage of endovascular devices through the stent for repair of blockages on the venous side of the stent. When the balloon catheter is deflated and removed, the elastic properties of the stent cause it to retract to its original stenotic configuration.

The invention discloses a long-term hemodialysis access device integrated with a free floating venous catheter. The long-term hemodialysis access device comprises a dialyzer body, an arterial blood drawing mechanism, a venous blood injection mechanism, a form adjusting mechanism and a skin heating mechanism. The dialyzer main body is provided with a blood inlet, a substance exchange cavity and a blood outlet, and the blood inlet, the substance exchange cavity and the blood outlet are communicated in sequence; the arterial blood drawing mechanism is mounted at the blood inlet, and the output end of the arterial blood drawing mechanism is communicated with the blood inlet; the venous blood injection mechanism is mounted at the blood outlet; the input end of the venous blood injection mechanism is communicated with the blood outlet; the form adjusting mechanism is mounted on the dialyzer main body; the number of the form adjusting mechanisms is two. The skin heating mechanism is detachably mounted on the dialyzer main body; the skin heating mechanism is used for thermally radiating human skin; by integrating the form adjusting mechanism and the skin heating mechanism, it is guaranteed that blood can float freely, meanwhile, the injection environment of the human skin is improved, and hemodialysis is improved.

An elastic dialysis stent comprises a central restrictor segment located between two tapered segments. The tapered segments are tapered from a larger diameter suitable for joining to tubular graft segments or attaching the stent in a graft or fistula, to the narrower diameter of the elastic central restrictor segment which provides a stenosis. The central restrictor is made of an elastic material which enables the stent to be radially expanded by a balloon catheter to a larger diameter for passage of endovascular devices through the stent for repair of blockages on the venous side of the stent. When the balloon catheter is deflated and removed, the elastic properties of the stent cause it to retract to its original stenotic configuration.

An electromagnetic radiation (EMR) delivery system for delivering EMR at wavelengths, intensities, exposure amounts, and durations that can prevent, reduce, and / or eliminate infectious agents within, on, and around a catheter and / or catheter extension portion to internal and / or external locations within and / or on the patient's body. A smart light engine box generates therapeutic EMR, controls the treatment, and monitors the integrity of the system. Disposable optical fiber supplies enable home use of the EMR delivery device. Specific embodiments of the EMR delivery device for use with peritoneal dialysis catheters, dialysis accesses, and hemodialysis accesses are also disclosed.

A vascular access guidance platform provides enhanced visualization and accuracy for medical procedures through an integrated extended reality system. The platform comprises an extended reality visualization system configured to display three-dimensional holograms overlaid on patient anatomy, a registration and tracking system for spatial alignment between virtual and physical anatomy, multiple imaging sensors including infrared cameras and ultrasound devices, and a processing system with coordinate transformation algorithms. The system captures anatomical imaging data, generates augmented representations of vascular anatomy, and aligns these representations with physical patient anatomy using registration techniques including optical markers, spatial mapping, and bony landmark registration. The platform maintains real-time tracking capabilities throughout procedures, accommodating patient movement and practitioner repositioning. Applications include intravenous therapy, hemodialysis access, and blood sampling procedures.

An electromagnetic radiation (EMR) delivery system for delivering EMR at wavelengths, intensities, exposures, and durations to locations inside and / or outside a patient's body in, on, and surrounding a tubular structure such as a tube, catheter, and / or a catheter extension to prevent, reduce, and / or eliminate infectious agents in, on, or surrounding the tubular structure. A smart light engine box generates the therapeutic EMR, controls treatments, and monitors the health of the system. A fiber optic disposable, introduced and positioned by an introducer assembly, makes at-home use of the EMR delivery system possible. Specific embodiments of the EMR delivery system for use with peritoneal dialysis catheters, dialysis accesses, and hemodialysis accesses are also disclosed.

The present invention discloses a functional monitoring and evaluation system for hemodialysis access, which relates to the technical field of hemodialysis. This system encompasses multiple key modules, including dialysis detection, algorithm model construction, dialysis rate calculation, data calculation, and dialysis evaluation. In this system, first, data before and after dialysis of patients is collected in real time through the dialysis detection module. Then, the constructed algorithm model is used to analyze the patient characteristics to determine the dialysis rate threshold S and the dialysis access threshold T. Next, the relevant data is calculated and input into the algorithm model for comparison and evaluation with the dialysis rate threshold S and the dialysis access threshold T, and corresponding warning information is generated. For hemodialysis treatment, the functional monitoring of the dialysis access is crucial. The emergence of this system fills some gaps in the existing monitoring means, enabling medical staff to more comprehensively and accurately evaluate the dialysis access situation of patients, timely discover problems and take corresponding treatment measures.

The invention relates to a percutaneous artery and vein split type artificial blood vessel system for hemodialysis and a using method of the percutaneous artery and vein split type artificial blood vessel system. The percutaneous artery and vein split type artificial blood vessel system comprises two infusion devices completely implanted subcutaneously and two sections of independent blood vessel substitutes. The diaphragm of the infusion device is made of a high-elasticity biocompatible material, and a microstructure and an antibacterial coating are designed on the surface of the diaphragm, so that the sealing performance and the anti-infection performance are ensured; the blood vessel substitute reduces turbulence and thrombus risks through inner diameter matching, conical transition section optimization and antibacterial treatment. The system reliability is further improved through key connection point stability testing and implantation position optimization. According to the application, the stability and safety of a hemodialysis channel are remarkably improved, and the infection and complication risk is reduced.

A vascular access guidance platform (100) provides enhanced visualization and accuracy for medical procedures through an integrated extended reality system. The platform (100) comprises an extended reality visualization system (102) configured to display three-dimensional holograms overlaid on patient anatomy, a registration and tracking system (104) for spatial alignment between virtual and physical anatomy, multiple imaging sensors (110) including infrared cameras and ultrasound devices, and a processing system (106) with coordinate transformation algorithms. The system captures anatomical imaging data, generates augmented representations of vascular anatomy, and aligns these representations with physical patient anatomy using registration techniques including optical markers, spatial mapping, and bony landmark registration. The registration and tracking system (104) utilizes registration sensors (112) and registration targets (114) positioned at predetermined anatomical locations. The platform (100) maintains real-time tracking capabilities throughout procedures, accommodating patient movement and practitioner repositioning. Applications include intravenous therapy, hemodialysis access, and blood sampling procedures.