283 results about "Internal fistula" patented technology

The invention relates to the technical field of medical image processing and medical aid decision making, in particular to an internal arteriovenous fistula intelligent planning method and system based on haemodynamic simulation, and the method comprises the steps: firstly obtaining three-dimensional space anatomical data of arteriovenous blood vessels of a patient, and constructing a blood vessel tree three-dimensional model; and inputting the blood vessel parameter data and the hemodynamic parameter data at different blood flow rates into a deep learning model to obtain dynamic shear force data of the anastomotic stoma, and comparing the dynamic shear force data of the anastomotic stoma with preset optimal anastomotic angle data to determine an optimal anastomotic angle. And performing internal arteriovenous fistula operation type three-dimensional modeling on the three-dimensional model of the vascular tree by combining the optimal anastomosis angle to obtain a three-dimensional internal arteriovenous fistula model, and performing a virtual operation based on the model to obtain virtual operation process data and a postoperative hemodynamic state evaluation result. The success rate of one-time operation of internal fistula can be increased to 85%-90% from 60%-65% in the prior art.

The invention relates to the field of medical health monitoring, and discloses an internal arteriovenous fistula anomaly detection method and system based on a reversible audio-video transformation and diffusion model, and the method comprises the steps: collecting an internal fistula tremor sound sample; preprocessing the internal fistula tremor sound sample; converting the preprocessed internal fistula tremor sound sample into an amplitude spectrogram and a phase spectrogram by using reversible audio-video conversion; inputting the amplitude spectrogram into a diffusion model trained by a normal sample, and generating an amplitude spectrogram matched with the normal sample distribution through denoising reconstruction; the reconstructed amplitude spectrogram is combined with the original phase spectrogram to be restored into a reconstructed internal fistula tremor sound sample through reversible audio-video transformation; multi-band feature extraction is performed on the original and reconstructed internal fistula tremor sound samples, a multi-cluster Gaussian clustering model is trained, anomaly classification is realized based on a log-likelihood threshold, and internal fistula stenosis is judged. According to the technical scheme, the accuracy and robustness of internal arteriovenous fistula anomaly detection can be remarkably improved.

The invention discloses a digital full-period monitoring and evaluating system for the internal fistula function of a uremia patient, and relates to the technical field of medical monitoring. By integrating a multi-mode sensor, intelligent data processing and cloud analysis technologies, comprehensive, accurate and real-time monitoring of the internal fistula function is realized. The system comprises a data acquisition unit, a data transmission unit, an intelligent processing terminal, a cloud server, a user interaction unit and a distributed storage unit, and can measure multi-dimensional physiological parameters such as blood flow velocity, blood flow volume and blood flow pressure and obtain the endovascular microstructure and elastic characteristics. And the cloud server executes multi-modal data fusion analysis, generates an early warning signal, and triggers alarms of different levels through a hierarchical early warning strategy. According to the system, the precision and comprehensiveness of internal fistula function monitoring are improved, the complication risk is reduced, and powerful technical support is provided for dialysis treatment of uremia patients.

The invention relates to the technical field of medical instruments, in particular to an internal fistula blood vessel detection system for hemodialysis, which comprises a data acquisition module for acquiring ultrasonic data, an impedance value, tremor intensity and a pressure spectrum; the mode determining module is used for determining a detection mode of the internal fistula blood vessel based on the tortuosity index and determining massage frequency and air bag pressure according to the blood vessel compliance index; the stenosis analysis module is used for determining whether the internal fistula blood vessel is stenosis or not based on the stenosis risk characterization parameter and determining whether the stenosis degree of the internal fistula blood vessel is in a reasonable range or not according to the blood flow velocity characterization value; the frequency adjusting module determines and adjusts the massage frequency based on the ratio; the injury analysis module is used for determining whether the internal fistula blood vessel is injured or not in the dialysis process on the basis of the bioelectrical impedance change rate and determining whether the internal fistula blood vessel injury is in a reasonable range or not after dialysis according to the tremor intensity change value; the pressure adjusting module determines and adjusts the pressure of the air bag based on the difference value. The accuracy of internal fistula blood vessel detection is improved.

The invention relates to the technical field of internal fistula puncture equipment, and particularly discloses a hemodialysis internal arteriovenous fistula automatic puncture robot and a control method thereof.The hemodialysis internal arteriovenous fistula automatic puncture robot comprises a position adjusting mechanism, a posture adjusting mechanism and a puncture mechanism; the puncture mechanism comprises a supporting plate, a puncture pushing assembly with a sliding table, a mounting frame, an angle compensation adjusting assembly, a clamping jaw assembly and a puncture protection assembly, the puncture pushing assembly is constructed to drive needle inserting and needle withdrawing operation of a puncture needle, the mounting frame comprises an end plate and a limiting ring spaced from the end plate, the clamping jaw assembly is arranged in the limiting ring, and the angle compensation adjusting assembly is arranged on the supporting plate. The clamping jaw assembly and the angle compensation adjusting assembly are in coaxial transmission connection, the clamping jaw assembly is constructed to clamp a puncture needle and obtain feedback force in the puncture process, and the puncture protection assembly is constructed to selectively limit and fix the clamping jaw assembly according to the feedback force. Automatic clamping and posture fine adjustment of the puncture needle are achieved, and the puncture efficiency and safety are improved.

The invention relates to the technical field of medical treatment, in particular to an internal arteriovenous fistula rope ladder puncture intelligent planning therapeutic apparatus based on visual navigation, which comprises a visual imaging module, a central processing module, a navigation display module, a puncture auxiliary module and a data management module, the visual imaging module comprises a high-resolution ultrasonic probe module, an image acquisition and transmission module and a three-dimensional imaging function module. The system has the advantages of high puncture accuracy and high working efficiency, puncture points and puncture angles can be accurately selected through visual imaging and intelligent planning, repeated puncture of the same part is avoided, and vascular injury and complications are reduced; a puncture scheme is automatically generated, so that the time and energy of manual planning of medical staff are reduced, and the efficiency of puncture operation is improved; intelligent planning is carried out according to the individual condition of the patient, and the system can formulate a puncture strategy most suitable for the patient by deeply analyzing image data, clinical information and the like of the patient.

The invention discloses a microfluidic system for studying prevention and treatment of internal fistula dysfunction by hand pump intervention, and belongs to the technical field of cytomechanics biology microfluidic experimental devices for internal arteriovenous fistula health and rehabilitation. The system comprises a feedback control system, a fluid loading system, a multi-channel optical imaging system, a micro-fluidic chip, a detection system and a post-load system. The micro-fluidic chip is designed into a Y-shaped structure based on the geometric structure of the AVF. The fluid loading system is combined with the feedback control system and the after-load system, and WSS distribution characteristics corresponding to the endothelial surface of the AVF anastomosis position under different hand pump intervention conditions can be reproduced at the intersection of the Y-shaped chips. The system can accurately and comprehensively reproduce the distribution characteristics of the WSS on the endothelial surface at the AVF anastomosis position under the condition of hand pump intervention with different intensities and frequencies, can simply and intelligently carry out cell mechanics biology experiments, and provides a foundation for revealing a potential mechanics biology mechanism for preventing and treating internal fistula power loss through hand pump intervention. And a miniaturized, objective, standardized, quantitative and automatic experiment platform is provided.

The invention provides an intelligent compression device and method for maintaining the internal fistula function of a hemodialysis patient, and belongs to the technical field of intelligent compression. The device comprises a CMUT ultrasonic array, an errhysis sensor, a bioelectricity monitoring module, an infrared temperature sensing array, an AI intelligent decision module, a dynamic pressure adjusting system, an energy field intervention module and a microneedle drug delivery module. Through space-time alignment collection of multi-modal data, dynamic parameter optimization of an AI model and rapid cooperative response of an actuator, the internal fistula compression is spanned from experience dependence to accurate intelligence, and the hemostasis efficiency and the blood vessel protection effect are remarkably improved.

The invention provides a multi-mode intelligent analysis internal fistula postoperative rehabilitation nursing method and system, and belongs to the technical field of medical nursing and artificial intelligence crossing. The application aims to solve the problems of single monitoring dimension, subjective risk judgment and static homogenization of the nursing scheme in the existing internal arteriovenous fistula postoperative nursing. The method comprises the following steps: acquiring multi-modal data related to a wound state and a hemodynamic state of an internal arteriovenous fistula; processing the multi-modal data to generate standardized feature data which can be analyzed; generating a risk assessment result about the health condition of the internal arteriovenous fistula; and a preset nursing scheme is dynamically adjusted based on a risk assessment result. According to the method and the device, multi-modal data are fused and an intelligent algorithm is used for collaborative analysis, so that the accuracy and early stage of risk identification can be realized, the individuation and high efficiency of a nursing scheme are realized, and the nursing quality is improved.

The invention relates to a patient internal fistula risk early warning method, system and device based on B-mode ultrasound data and a medium. The method comprises the following steps: collecting B ultrasonic and clinical historical data of a patient and performing multi-modal preprocessing; function grading is achieved through an internal fistula grading model on the basis of B-mode ultrasound key features and converted into coding features; constructing an internal fistula risk causal graph through a causal discovery algorithm in combination with the coding features and clinical data; quantifying the causal effect between variables through a causal effect estimation method based on a causal graph; in combination with a causal diagram and an effect result, personalized risk early warning and attribution analysis results are generated through anti-factual reasoning, so that accurate and explainable internal fistula risk early warning is realized, and a basis is provided for clinical intervention.

The present invention relates to the technical field of arteriovenous fistulas. Provided is an optimized scheme for postoperative vasodilation of an autologous arteriovenous fistula. The optimized scheme comprises microwave and electromagnetic field stimulation, ultrasonic monitoring and AI analysis, nano-drug sustained-release technology and intelligent pressure regulation. A microwave and electromagnetic field module stimulates vascular smooth muscle by means of precisely controlling a frequency and an intensity; an ultrasound monitoring module collects real-time data on a vascular inner diameter and a blood flow volume; an AI module dynamically adjusts a stimulation intensity on the basis of the data; a nanoparticle sustained-release system realizes long-acting drug release; and a pressure regulation module automatically regulates, by means of a closed-loop control algorithm, external pressure applied to blood vessels. The problems of imprecise physical stimulation, unsustained pharmaceutical support, fixed pressure regulation, etc., in traditional management of postoperative vasodilation are effectively solved.

The invention discloses an auxiliary puncture device for dialysis puncture of internal arteriovenous fistula, and belongs to the technical field of auxiliary puncture instruments, the auxiliary puncture device comprises a supporting plate, four corners of the bottom of the inner wall of the supporting plate are provided with first elastic supporting pieces, and the same arc-shaped arm bracket is fixedly connected among the top ends of the four first elastic supporting pieces. Through downward movement of the arc-shaped arm bracket, the four rubber skin supporting pieces are indirectly driven to be clamped and connected to the skin around a point to be punctured in an abutting mode, the skin is automatically and obliquely diffused, moved and tightened in the transverse direction and the longitudinal direction, and the situation that the skin of the point to be punctured is loosened and collapses, and medical workers need to manually support the skin to conduct puncture operation is avoided; according to the automatic puncture device, the workload of medical staff is relieved, the puncture efficiency and precision are improved, the automation degree is high, the gravity of the arm of a patient is ingeniously utilized to drive the rubber skin supporting piece to be clamped and abut, the skin of the to-be-punctured point is automatically expanded, the medical staff does not need to manually expand the skin of the punctured point in the whole process, and time and labor are saved.

The invention relates to a multi-mode intelligent internal arteriovenous fistula monitoring and early warning method and device and computer equipment. The method comprises the following steps: acquiring acousto-optic pressure and temperature information of internal arteriovenous fistula of a patient, and identifying data change distribution information corresponding to each monitoring type of the internal arteriovenous fistula based on the acousto-optic pressure and temperature information; based on the data change distribution information corresponding to each monitoring type, identifying an internal fistula state analysis result of the internal arteriovenous fistula through a data analysis strategy of each monitoring type; and on the basis of the internal fistula state analysis result of the internal arteriovenous fistula, predicting internal fistula state trend information of the patient, and on the basis of the internal fistula state trend information of the patient, generating an internal fistula early warning result of the patient. By adopting the method, the monitoring comprehensiveness of medical staff on internal arteriovenous fistula can be improved.

The invention discloses an arm model for simulating internal arteriovenous fistula puncture, and the model comprises an arm model which comprises an inner base model and an epidermis model sleeving the outer side of the inner base model; the blood vessel model comprises an artery section, a vein section and an internal fistula body section; the circulating pump body is respectively connected with the end parts of the artery section and the vein section and is used for circularly conveying the blood model along the artery section and the vein section; the inner base model comprises an inner base and a plurality of thickening layers arranged outside the inner base in a sleeving mode, the artery section and the vein section are arranged corresponding to the inner sides and the outer sides / the same sides of the thickening layers respectively, and holes allowing the internal fistula body section to penetrate through are formed in the thickening layers. Through the arrangement of the thickening layers, a proper number of thickening layers can be adjusted according to simulation requirements to sleeve the inner base, so that the size of the inner base model is adjusted, and the specific positions of the artery section, the vein section and the internal fistula body section are autonomously set through the holes in the thickening layers to meet different simulation requirements.

The invention provides a method and a system for evaluating thrombus risk before an internal arteriovenous fistula operation, and relates to the field of medical data processing, and the method comprises the following steps: based on the medical history information, treatment information and postoperative thrombus monitoring information of a plurality of internal arteriovenous fistula operation patients, evaluating the thrombus risk before the internal arteriovenous fistula operation; determining a plurality of thrombus risk related diseases, thrombus risk related operations and thrombus risk related drugs, and determining a plurality of internal arteriovenous fistula operation patient types; based on the medical history information and the treatment information of the patient to be subjected to the internal arteriovenous fistula operation, the type of the patient to be subjected to the internal arteriovenous fistula operation is determined, and preoperative detection information of the patient to be subjected to the internal arteriovenous fistula operation is obtained; and performing thrombus risk assessment before the internal arteriovenous fistula operation by combining the key preoperative detection factor corresponding to the type of the internal arteriovenous fistula operation patient and the influence weight corresponding to the key preoperative detection factor, thereby improving the efficiency and accuracy of thrombus risk assessment before the internal arteriovenous fistula operation.

The invention discloses an internal fistula puncture auxiliary positioning device, and belongs to the field of puncture auxiliary devices. Comprising a U-shaped fixing frame, adjusting transverse grooves are formed in the opposite sides of the upper surface of the U-shaped fixing frame, adjusting blocks are slidably connected to the interiors of the two adjusting transverse grooves, fixing plates are fixedly connected to the upper surfaces of the two adjusting blocks, and adjusting vertical grooves are formed in the opposite sides of the two fixing plates; an adjusting transverse groove in a U-shaped fixing frame is matched with an adjusting screw rod and a belt wheel transmission assembly, an adjusting block can be driven to drive an arc-shaped plate to stably move front and back by rotating a stirring disc, preliminary positioning of a puncture area is achieved, an arc-shaped groove of the arc-shaped plate is matched with a clamping plate, a guide plate can be driven to slide left and right in the direction of a blood vessel, and the internal fistula blood vessel is accurately aligned; the height of the guide plate can be quickly adjusted by adjusting the combination of the vertical groove, the first insertion rod and the U-shaped pressing plate, and the device is adaptive to arm thicknesses and blood vessel depths of different patients.

The invention provides an internal arteriovenous fistula monitoring method and system, and the method comprises the steps: extracting feature parameters based on the blood vessel pulsation sound of an internal arteriovenous fistula region, preprocessing the feature parameters, and inputting the preprocessed feature parameters into a first prediction model, thereby obtaining a stenosis probability; extracting risk factors from a biochemical examination result, preprocessing the risk factors, and inputting the preprocessed risk factors into a second prediction model to obtain a sequence of contribution degrees of the risk factors to the internal fistula stenosis from high to low; the stenosis probability and the contribution degree of the first L risk factors are input into a risk assessment model, the internal arteriovenous fistula risk level is obtained, and the risk assessment model is integrated based on a TOPSIS multi-index weighting method weighted by equal weights. The invention provides an internal arteriovenous fistula monitoring method and system which are used for solving the problems that a palpation method is greatly influenced by experience and subjective judgment of medical staff, and an ultrasonic monitoring method is expensive in equipment, large in size, complex in operation, not suitable for daily monitoring and incapable of providing a remote monitoring function.

This invention relates to the field of medical auxiliary instruments, and more particularly to a hemodialysis auxiliary device for nephrology. This invention provides a hemodialysis auxiliary device for nephrology that can stably support the patient's arm on the side of the fistula and provides movable fixation for the catheter connected to the fistula puncture needle. It is flexible in use and can effectively prevent muscle spasms in the arm, thus assisting the patient in undergoing more comfortable hemodialysis treatment. The hemodialysis auxiliary device for nephrology includes a base plate, a screw, and a rotating handle; the screw is threaded to the base plate, and the rotating handle is located at the bottom end of the screw. This invention uses a round-headed top rod to limit the inclined ring, locking the height of the support ring plate and the fixed ring plate. Simultaneously, a toothed ring limits the gear, locking the swing angle of the support ring plate and the fixed ring plate. This allows the support ring plate to limit the patient's arm on the side of the fistula, assisting the patient in undergoing stable hemodialysis treatment.

The utility model provides an internal fistula puncture tourniquet and blood pipeline fixing device, and relates to the technical field of fixing devices. An internal fistula puncture tourniquet and blood pipeline fixing device comprises an arm ring with two free ends and at least two blood pipeline fixing assemblies arranged on the arm ring. The armlet is provided with a limiting clamping rod, and a plurality of limiting clamping holes are formed in the armlet in the extending direction of the armlet at intervals. The armlet is wound into a ring shape, and the limiting clamping rod penetrates through one limiting clamping hole. By adopting the arm ring, the tightness of the arm ring can be adjusted according to the individual difference of patients so as to be installed on the arms of different patients, the arteriovenous end blood path pipe and the arteriovenous end blood path pipe can be clamped and fixed, the blood path pipe cannot fall off when the arms of the patients are moved, the occurrence of hemorrhage caused by needle falling is reduced, the dialysis safety of the patients is ensured, the operation of nurses is facilitated, and the working efficiency is improved.

The utility model provides a C-shaped curved stepped balloon catheter, which relates to the technical field of kidney intervention.The C-shaped curved stepped balloon catheter comprises a first balloon head end, the side end of the first balloon head end is integrally communicated with a concave bent wrinkled edge, and the side end of the concave bent wrinkled edge is integrally communicated with a second balloon tail end. In a non-working state, the wall of the balloon in the whole structure is folded to be in a straight column shape, a guide wire can conveniently pass through the balloon to reach a diseased region, in a working state, the whole balloon is in a C shape and is divided into two sections, the diameter of the head end of the first balloon ranges from 4 mm to 5 mm, the first balloon crosses an internal fistula anastomotic stoma to be placed in an artery, the diameter of the tail end of the second balloon ranges from 6 mm to be placed in a vein, and after the whole balloon is placed into a target lesion through the guide wire, the whole balloon is placed into the target lesion through the guide wire. The bending direction is adjusted, a pressure pump is connected, pressurization is conducted, the head end of the first balloon, the concave bending wrinkled edge and the tail end of the second balloon are expanded, arteries and veins with different inner diameters are expanded at the same time through radial force, and fracture caused by tearing of anastomotic stoma is avoided.

The utility model relates to a removing device for removing subcutaneous tissue in a minimally invasive mode, and belongs to the technical field of medical instruments. Comprising a handle which is provided with a mounting groove; the first end of the connecting assembly is detachably connected with the mounting groove; the planing piece is detachably arranged at the second end of the connecting assembly and used for removing subcutaneous tissue. According to the internal fistula subcutaneous tissue planer, the planing sheet extends into the subcutaneous tissue for planing, part of the subcutaneous tissue is cut off, and the thickness of the internal fistula blood vessel talus is reduced.

The invention relates to the technical field of blood vessel developing, and discloses an internal arteriovenous fistula puncture blood vessel auxiliary developing device and method.The internal arteriovenous fistula puncture blood vessel auxiliary developing device comprises a base, a fixedly-connected clamping base is arranged at the top of the base, fixedly-connected mounting boxes are arranged on the two opposite side walls of the clamping base, and the bottoms of the mounting boxes are fixedly connected with the top of the base; wherein a first supporting plate fixedly connected is arranged on the side wall of one mounting box, the bottom of the first supporting plate is fixedly connected with the top of the base, movable clamping frames are symmetrically arranged at the top of the base, a rotatable adjusting mechanism is arranged at the top of the base and comprises a rotatable driving shaft, a first external spline and a gear, and the driving shaft is located in the mounting box. The projection mechanism can present the real blood vessel direction of the patient in real time.

The application discloses an arteriovenous fistula blood vessel lining support and a use method thereof, and the arteriovenous fistula blood vessel lining support has a three-way pipe structure; the axes of two passages in the three-way pipe structure are on a straight line to form a straight pipe, and the axis of the other passage has a variable included angle with the straight line formed by the axes of the first two passages to form a bifurcated pipe; the straight pipe and the bifurcated pipe jointly form a three-way shape of the support with an inner cavity and have optional additional structures near each port; the straight pipe is used for being implanted into an arterial blood vessel; and the bifurcated pipe is used for sleeving a venous blood vessel which needs to be connected. After the arteriovenous fistula blood vessel lining support is embedded, the occurrence of turbulent flow is effectively reduced, blood composition deposition is reduced, the probability of vascular hyperplasia and vascular stenosis is reduced, the arteriovenous fistula maturation time is shortened, and the use time of the fistula is prolonged.

The utility model provides a safe internal arteriovenous fistula puncture needle, which relates to the technical field of medical instruments and comprises a puncture needle main body, the outer surface of the puncture needle main body is provided with a flow guide tube, one end of the flow guide tube is connected with a needle head, the outer surface of the flow guide tube is sleeved with a threaded ring, and the outer surface of the threaded ring is sleeved with a protective shell. One end of the protective shell is fixedly connected with a limiting plate, a first threaded groove is formed in one end of the protective shell, and a second threaded groove is formed in the other end of the protective shell. According to the puncture needle, normal proceeding of dialysis work is guaranteed by arranging the puncture needle body, an installation scene is provided for the protective shell by arranging the threaded ring, and the protective shell is fixed by arranging the threaded groove to be in threaded connection with the threaded ring, so that normal proceeding of puncture work is guaranteed; by arranging the limiting plate, the moving range of the protective shell is limited, and it is guaranteed that normal proceeding of puncture work is not affected.

The present application relates to the technical field of blood monitoring, in particular to a vascular health assessment and intelligent nursing system for hemodialysis patients. The degree of venous reflux obstruction is determined based on the change trend and degree of venous pressure data within each dialysis period, and the degree of inconsistency between the change trends of venous pressure data and transmembrane pressure data. The degree of arterial supply obstruction is determined based on the change trend and degree of arterial pressure data within each dialysis period. The suspected internal fistula obstruction period is determined based on the change trend of the degree of venous reflux obstruction and the degree of arterial supply obstruction. The nursing intervention prompting degree of the patient to be tested is determined based on the relationship between the blood flow data and arterial pressure data of each dialysis stage of the patient to be tested within the suspected internal fistula obstruction period, and the blood flow data of the non-dialysis stage. The internal fistula nursing scheme is determined. The present application realizes early warning of internal fistula dysfunction based on the change of venous and arterial pressure of the blood circulation loop during dialysis.

The utility model relates to the technical field of internal fistula exercisers, in particular to an internal arteriovenous fistula exerciser which comprises an elbow seat, an air bag is arranged on the upper surface of the elbow seat, a grabbing mechanism convenient for a patient to grab and exercise internal fistula is arranged at the front end of the elbow seat, a telescopic groove is formed in the front end of the elbow seat, a telescopic sleeve is inserted into the telescopic groove in a sliding mode, and the telescopic sleeve is connected with the elbow seat. And the connecting frame is inserted into the front end of the telescopic sleeve in a sliding manner. According to the internal arteriovenous fistula exerciser, a one-way air inlet valve is further arranged on an air bag, so that an inflatable cuff is conveniently controlled to expand to extrude arms to promote vasodilation, arteriovenous blood deposition of upper limbs is achieved, and therefore the filling degree of internal fistula blood vessels is increased, and a telescopic sleeve connected to the front end of an elbow seat and a connecting frame are connected with an exerciser body through a rotating rod; meanwhile, the four-finger fixing belt and the thumb fixing belt are arranged on the upper side and the lower side of the exerciser main body, so that patients with different arm lengths can conveniently hold the exerciser main body for exercise.

The internal fistula limb cushion cover device comprises a C-shaped elastic plate body, an adjusting connecting belt body and an inner cushion body, the adjusting connecting belt body is connected to the middle of an opening of the elastic plate body, and the adjusting connecting belt body can adjust the size of the opening of the elastic plate body. A movable pad surface is detachably pasted on the inner wall of the elastic plate body, an inner pad body matched with the pasting pad is arranged on the movable pad surface below the inner wall of the elastic plate body, and the inner pad body is pasted on the surfaces of the front end part and the rear end part of the movable pad surface; a red light body is arranged above the inner wall of the elastic plate body, a control switch and a power supply body are arranged on the surface of the elastic plate body, and the control switch is respectively connected with the red light body and the power supply body. According to the utility model, the limb on the internal fistula side can be comfortably cushioned and used, the infrared irradiation physiotherapy on the limb on the internal fistula side is realized, and the hot compress warm-keeping effect on the limb on the internal fistula side is realized by utilizing the graphene heating sheet.

The invention provides a hemodialysis internal fistula errhysis monitoring device, and belongs to the technical field of medical instruments, the hemodialysis internal fistula errhysis monitoring device comprises a monitoring component, the monitoring component comprises a fixing brace, a mounting hole is formed in the fixing brace, a disposable treatment towel is mounted on the inner wall of the fixing brace, a fixing assembly is mounted on the outer side of the fixing brace, and a monitoring assembly is mounted on the fixing assembly; an installation assembly is installed at the left end of the fixed support, a limiting assembly is installed between the installation assembly and the fixed support, an alarm and a power supply assembly are installed on the installation assembly, and a binding assembly is installed on the outer side of the fixed support. Therefore, the integrated device with the active monitoring and alarming functions is formed.

The invention particularly relates to an internal arteriovenous fistula power loss early warning system based on fusion of miniature ultrasound and biological impedance, and relates to the technical field of medical instruments. A data processing module; and an intelligent early warning module. According to the invention, through the integrated design of the miniature ultrasonic probe module and the biological impedance electrode module, the synchronous measurement of the blood flow velocity and the blood vessel volume change is realized; wherein the PMUT array is combined with a three-axis accelerometer to correct the angle of a probe in real time, angle errors caused by operation are avoided, meanwhile, the biological impedance electrode measures the blood vessel volume through alternating current, an impedance diameter model is dynamically updated through AI, the cross sectional area of the blood vessel is calculated, and traditional static calibration is replaced; the problem of insufficient precision of a single mode is solved, more reliable hemodynamic data is provided for clinic, and the abnormal state of the blood vessel is recognized in an early stage.

The utility model belongs to the technical field of puncture guiding devices, and particularly relates to an ultrasonic guiding internal arteriovenous fistula puncture positioning system which comprises a mounting frame, an adjusting assembly and a speed limiting assembly. The speed limiting assembly comprises a speed regulating bin, a push rod, a limiting piece and a speed regulator. One end of the adjusting assembly is connected with the mounting frame, and the other end is fixedly connected with the outer wall of the speed adjusting bin; one end of the push rod is inserted into the speed regulation bin; an exhaust pipe is arranged at one end of the speed regulation bin away from the push rod; an exhaust hole is formed in the exhaust pipe; one end of the speed regulator is inserted into the exhaust pipe and shields part of the exhaust hole; a puncture channel is arranged in the push rod; the puncture needle is fixed in the puncture channel through the limiting piece. The device has the advantages that the push rod is pushed to drive the puncture needle to move, and the push rod pushes out gas in the speed regulation bin through the exhaust hole. Due to the fact that the area of the exhaust hole is limited, the speed of gas exhausted through the exhaust hole is limited, the moving speed of the push rod in the speed adjusting bin is limited, and the puncture needle can be implanted at a constant speed.