218 results about "Radial artery" patented technology

The invention discloses a non-invasive hemodynamics monitoring method and system based on deep learning, and relates to the technical field of medical instruments, and the method comprises the steps: obtaining invasive blood flow data and non-invasive radial artery waveform data of a corresponding time point; time reference alignment is carried out on invasive blood flow data and non-invasive radial artery waveform data through time points, time drift errors between invasive and non-invasive equipment are eliminated, an initial non-invasive detection model is constructed, the method better fits the actual state of non-invasive detection, non-invasive feature vectors are used as input features after vascular elasticity compensation processing, and the non-invasive detection accuracy is improved. The initial non-invasive detection model is trained by taking blood flow parameters in the invasive data set as supervision annotation data, so that the consistency of model output and real invasive blood flow parameters is improved, 'waveform fragment-blood flow parameter 'space-time mapping is established, the running dynamic state of the non-invasive detection model is evaluated and analyzed, and the detection accuracy is improved. The performance change of the model in the training and running process can be monitored in real time, and convergence, over-fitting and under-fitting problems can be found in time.

The application discloses a preparation method of a resistance / capacitance dual-response MXene-based hydrogel flexible sensor, and the hydrogel flexible sensor is prepared by combining a microstructure hydrogel prepared from polyacrylamide, gelatin and MXene with an interdigital electrode. The hydrogel flexible sensor can simultaneously detect resistance response signals and capacitance response signals. The detected resistance and capacitance signals are complementary to each other, the single response signal mode of the flexible sensor is widened, the mutual calibration of the same group of data is realized, and the detection precision of the flexible sensor is improved. The MXene-based hydrogel flexible sensor is applied to the detection of human biological signals, for example, carotid artery pulse detection and radial artery pulse detection.

The invention provides a radial artery compressor control method and related equipment, and can be applied to the technical field of image processing. The method comprises the following steps: acquiring a first laser blood image acquired by an image acquisition component for a hand region of a target object; determining a target speckle contrast according to the pixel intensity of the pixel points in the first laser blood image, and determining the current blood flow rate of the hand region according to the target speckle contrast; under the condition that the current blood flow rate indicates that the radial artery has the occlusion risk, the ulnar artery air bag is controlled to deflate, and target pressure is determined according to the maximum pressure pulse wave amplitude of the target object in the ulnar artery air bag deflation process; and the ulnar artery air bag is controlled to be inflated until the pressure applied to the ulnar artery by the ulnar artery air bag reaches the blocking pressure, and the radial artery air bag is controlled to be inflated or deflated until the pressure applied to the radial artery by the radial artery air bag reaches the target pressure. In the application, the blood flow of the radial artery is ensured to be smooth so as to avoid radial artery occlusion.

The invention provides an early warning system and method for a radial artery compression hemostat based on multiple sensors, and belongs to the technical field of complication early warning. The method comprises the steps that S1, multiple types of physiological signals of a radial artery compression area are synchronously collected and subjected to digital processing; s2, discrete wavelet transform is carried out on the proximal end temperature and the telecentric end temperature; performing time domain analysis on the pulse signal, and extracting to obtain pulse amplitude; s3, constructing a temperature distribution model of the compression area based on the temperature difference signal; s4, the resistivity distribution of the compression area is reconstructed through the electrode impedance signal, and the errhysis position is positioned; s5, calculating a pressure change rate based on the pressure digital signal; calculating a pulse amplitude attenuation rate based on the pulse amplitude; and fusing the pressure change rate, the temperature gradient vector, the pulse amplitude attenuation rate and the errhysis index through a weighted summation formula to obtain a comprehensive risk value. According to the invention, through multiple types of sensors, the complication related parameter coverage rate is improved, and the complication early warning timeliness and accuracy are improved.

The invention relates to the field of non-invasive monitoring, and particularly provides a method for evaluating vascular elasticity through radial artery pulse waves. The method comprises the following steps that 1, radial artery pulse waves are obtained; step 2, preprocessing the radial artery pulse wave to obtain an average pulse period; 3, calculating a dominant wave angle based on the average pulse period; step 4, calculating pulse duration based on the average pulse period; step 5, calculating rise time based on the average pulse cycle; step 6, calculating a main wave amplitude based on the average pulse period; step 7, calculating a waveform area based on the average pulse period; and 8, establishing an evaluation model, inputting the dominant wave angle, the pulse duration, the rise time, the dominant wave amplitude and the waveform area into the evaluation model, and outputting a vascular elasticity predicted value by the evaluation model. According to the method, the accuracy of predicting the vascular elasticity is high, and the cost is low.

The utility model discloses a direct-viewing pressure feedback type radial artery compressor, and belongs to the field of medical instruments. A direct-view pressure feedback type radial artery compressor comprises a fixing plate, a pressure feedback device and a pressure feedback device. The bandage is arranged at one end of the fixing plate and binds the fixing plate to the arm of the patient; the direct-viewing pressure feedback type radial artery compressor further comprises a pressure applying piece and a pressure feedback piece, wherein the pressure applying piece is movably arranged on the fixing plate; the driving group is arranged on the fixed plate and is used for driving the pressure applying piece to move; the air bag is arranged on the pressure applying piece, located at the lower end of the pressure applying piece and abutted against the arm of the patient; the pressure indicating piece is arranged on the pressure applying piece in an up-down sliding manner; an air hole communicated with the air bag is formed in the pressure applying piece; the pressure indicating piece is arranged in the air hole in an up-down sliding mode. The direct-view pressure feedback type radial artery compressor has the beneficial effect that the direct-view pressure feedback type radial artery compressor with the indication function is provided.

The utility model discloses a dressing patch for fixing a catheter for HAIC treatment, which comprises a dressing patch main body, the back of the dressing patch main body is provided with an adhesive layer and is matched with a release layer, the dressing patch main body is provided with an inward concave area which is limited as a puncture area, and the adhesive layer is provided with an adhesive tape. A first auxiliary patch is arranged on the upper side of the inwards-concave area and used for fixing the catheter sheath in the mode of being attached to the skin. In the HAIC pipeline fixing nursing process, various fixing modes of the radial artery and the femoral artery under a common catheter or a micro catheter can be achieved; the pipeline can be arranged in a U-shaped mode, an S-shaped mode and a bending and coiling mode.

The utility model discloses a radial artery hemostat with timing and reminding functions, belongs to the technical field of medical auxiliary instruments, and aims to solve the problems that as the radial artery hemostat does not have the timing and reminding functions, nerve injury can occur and the occurrence rate of radial artery occlusion can be increased after the radial artery hemostat compresses the radial artery for a long time. Elastic bands are hinged to the two sides of the fixing plate, a threaded rod is installed at the top end of the fixing plate in a threaded mode, a pressurizing block is rotatably installed at the bottom end of the threaded rod, a screwing head is fixedly installed at the top end of the threaded rod, and installation blocks are fixedly installed at the positions, located on the two sides of the threaded rod, of the top end of the fixing plate; limiting grooves are formed in the opposite sides of the mounting grooves; through the arrangement of the electronic timer and the loudspeaker, medical staff can time conveniently when a patient uses the radial artery hemostat, the use time of the radial artery hemostat can be controlled conveniently, and the situation that the radial artery hemostat is used for a too long time and influences the radial artery of the patient is avoided as much as possible.

The utility model discloses a radial artery compression tourniquet, which comprises a compression block, a tourniquet body and a tourniquet body. The limiting piece is arranged above the pressurizing block; and the fixing belt is provided with an open hole matched with the limiting piece. The bottom of a pressurizing block is pressed on a gauze ball, then one end of a fixing band is clamped to the pressurizing block through an open hole, the other end of the fixing band is wound around the wrist of a patient, and the other end of the fixing band is embedded into a limiting piece through an open hole in the upper portion of the limiting piece, so that the gauze ball is pressurized through the pressurizing block, and the pressurizing block is fixed through the fixing band; automatic pressurization and fixation are achieved, manual pressing is not needed, nursing human resources are greatly saved, the nursing work efficiency is improved, part of gauze balls can enter hole grooves, friction force between pressurization blocks and the gauze balls can be increased, and dislocation of the gauze balls during pressurization is avoided; and the tightness can be conveniently adjusted.

The invention relates to the field of medical instruments, in particular to a portable heart disease interventional therapy machine. A portable heart disease interventional therapy machine integrates a combined therapy table, a heart ultrasonic developing system and a closed disinfection mechanism. The combined treatment table comprises the supporting box which can be unfolded to form a treatment platform, and is convenient to store and carry. The cardiac ultrasound developing system obtains cardiac information by using a transothoracic echocardiography device. A disinfection assembly of the closed disinfection mechanism realizes efficient disinfection and flushing of the guide wire and the catheter through an ultraviolet disinfection part and a flushing part; the leading-in tube of the leading-in assembly guides the guide wire and the catheter, and the tail end sheath tube ensures that the guide wire and the catheter smoothly enter the radial artery. All parts of the device cooperate with one another, and a convenient, safe and efficient comprehensive solution is provided for heart disease interventional therapy from the links of device portability, heart evaluation, instrument treatment and introduction and the like. The problem that an intervention guide wire and a catheter of existing simple portable interventional therapy equipment for heart disease interventional therapy can be polluted by dust and bacteria in air is solved.

A wearable device for measuring blood glucose and blood pressure for a user includes a main body including a first side and a second side formed on the opposite side of the first side; a first supporting frame protruding from the first side and a second supporting frame protruding from the second side; a belt portion having a first belt end detachably coupled to the first supporting frame, a second belt end detachably coupled to the second supporting frame, and at least one aligning mark, wherein the belt portion is positioned around a wrist of the user; wherein the main body includes at least one pressure sensor array assembly overlaid on a radial artery of the user; wherein the pressure sensor array assembly includes a plurality of apertures arranged one after another to form a cross-shaped pattern and at least four sensor elements arranged in a symmetrical configuration.

The utility model discloses an adjustable hand insertion plate device for radial artery interventional operation, which comprises an operating bed and a mattress, and further comprises a fixing plate, a rotating component, a lifting component, a lifting component and an arm bracket, the mattress is placed on the operating bed, the fixing plate is positioned on one side of the mattress and is connected below the mattress in an inserted manner, and the rotating component is positioned on the fixing plate. The rotating assembly is located on one side of the fixing plate and connected to the fixing plate, the lifting assembly is located at one end of the fixing plate and connected with the fixing plate through the rotating assembly, one end of the lifting assembly is connected to the upper portion of the lifting assembly, and the arm bracket is located above the lifting assembly and connected to the lifting assembly. The arm bracket can be rotationally stored below the operating bed through the rotating assembly, and the arm bracket is prevented from hindering a patient when the patient passes through the bed.

The invention belongs to the technical field of medical treatment, and discloses an interventional postoperative radial artery compressor capable of preventing compression injury, which comprises a compression belt, the compression belt is connected with a first connecting belt and a second connecting belt, the upper end of the first connecting belt is provided with a plurality of friction belts, and the lower end of the second connecting belt is provided with a magic tape. Medical cotton is arranged at the lower end of the compression belt, a local compression structure is arranged at the lower end of the compression belt, a friction belt arranged on a first connecting belt is matched with a hook-and-loop fastener arranged on a second connecting belt, the pressure between the compression belt and a patient can be adjusted, and then the local part of the patient is extruded and fixed through a pressure plate; and the pressure sensor arranged at the lower end of the pressure plate can transmit the pressure value to the receiving display at any time, so that a worker or a family member can conveniently adjust the pressure value.

The invention discloses a central arterial pressure waveform reconstruction method based on a CBL-iTransform model, and relates to the technical field of central arterial pressure evaluation. According to the method, a waveform reconstruction model (CML-iTransform) is obtained through the design of the method, the waveform reconstruction model is based on an improved iTransform architecture, and a one-dimensional CNN and a BiLSTM network are fused, so that the data feature extraction capability in the waveform reconstruction process is remarkably improved, and reconstruction from an RAP waveform to a CAP waveform is realized; wherein the RAP waveform is firstly input into the feature extraction module, then the reconstructed CAP waveform is output through the waveform reconstruction module, the data sample size is expanded through data enhancement, and the model performance is improved; compared with a traditional method and several deep learning network models, the model capable of capturing long and short-term memory dependence is superior to other methods in the aspect of reconstructing the central arterial pressure from the radial arterial pressure, and it is proved that the model is good in reconstruction performance.

The utility model discloses an adjustable radial artery fixing device in the technical field of medical supplies, which comprises a hand placing plate, a leather cushion is arranged on the outer side of the hand placing plate, a first bandage used for fixing a wrist is arranged on the hand placing plate, a second bandage used for hemostasis by compression when puncture fails is arranged on one side of the first bandage, and the first bandage and the second bandage are arranged on the other side of the hand placing plate. One side of the second bandage is provided with a third bandage used for fixing the hand placing plate, one side of the third bandage is provided with a fourth bandage and a fifth bandage, and the fourth bandage and the fifth bandage are used for fixing the palm. Due to different wrist sizes and different dorsal flexion amplitudes of palms of patients, the puncture success rate is low, and the occurrence rate of repeated puncture complications is obviously increased. The problems that after one-time puncture fails, a medical worker needs to conduct pressing hemostasis on a puncture point for 5-10 min, physical and psychological pain is brought to a patient, meanwhile, the working intensity of the medical worker is increased, and the working efficiency is greatly reduced are solved.

A needle-injection catheter includes a catheter body having a distal end, a proximal end, a stiff proximal portion, a flexible distal portion, and a delivery lumen extending therethrough. In a first embodiment, a straight injection needle extends coaxially from a distal tip of the flexible portion of the catheter body, and a plurality of penetration limiting elements positioned circumferentially about a base of the straight injection needle and configured to fold radially inwardly against a shaft of the needle when constrained in a tubular lumen and to extend radially outwardly when unconstrained. In a second embodiment, a helical needle extends from the distal tip of the flexible portion of the catheter body. The helical needle has at least one helical delivery lumen connected to receive an injectable substance from the delivery lumen of the catheter body.

The utility model discloses a radial artery compression hemostasis device for the department of cardiology, which relates to the technical field of medical instruments and comprises an inverted U-shaped plate, a compression mechanism and an auxiliary mechanism, the auxiliary mechanism comprises a straight plate fixedly connected to the bottom surface of the inverted U-shaped plate, and the upper surface of the straight plate is fixedly connected with a first bandage. A first hook-and-loop fastener and a second hook-and-loop fastener are fixedly connected to the upper surface of the first bandage, a first square frame is slidably connected to the outer surface of the first bandage, and the first square frame is fixedly connected with the upper surface of the straight plate. By arranging the auxiliary mechanism, the hand of a patient is stably fixed, the hand is effectively prevented from moving in the pressing hemostasis process, and therefore the hemostasis effect is ensured. The first bandage and the second bandage achieve double fixation of the wrist and the palm through the first hook-and-loop fastener, the second hook-and-loop fastener, the third hook-and-loop fastener and the fourth hook-and-loop fastener respectively, and due to the design, the stability of hemostasis operation is improved, and the risk of secondary injury caused by hand movement of a patient is reduced.

A wristband device and system with a gesture recognition function and a continuous blood pressure monitoring function are provided. The wristband device acquires wrist impedance distribution data and pulse impedance waveform data of the radial artery in two functional modes by means of a multiplexed electrode array in a wearable wristband and converts bioimpedance data into human gesture and blood pressure information by means of an algorithm deployed in the system to realize monitoring of human physiological conditions. The device and system can extract weak bioimpedance signals by means of the low-cost and simple electrode array and improve the monotiling sensitivity of wrist impedance signals by optimizing the electrode configuration; and two functions are integrated in the same system by means of the multiplexed electrode array, such that the sensor size, complexity and integration difficulty are reduced.

The present invention belongs to the technical field of flexible electronic skin sensors and discloses a flower-shaped ZnO / PEDOT:PSS composite film, a preparation method thereof, and the resulting flexible electronic skin sensor. The ZnO / PEDOT:PSS composite film is prepared by coating the ITO surface of a cleaned and dried ITO / PET flexible substrate with a mask and magnetron sputtering ZnO. The film is then hydrothermally treated at 80-90°C, and the mask is removed to obtain a flower-shaped ZnO nanoarray. A PEDOT:PSS conductive layer is then prepared on the flower-shaped ZnO nanoarray using a droplet printing method. The flexible electronic skin sensor, produced based on the ZnO / PEDOT:PSS composite film, has the characteristics of high precision, a wide detection range, high integration, and multiple responses. It achieves pressure and tactile perception similar to that of human fingertip skin and can be applied to the field of human radial artery pulse monitoring.

The invention provides a radial artery hemostasis device capable of intelligently adjusting pressure based on a chip, which is composed of a fixing band and a compressor and has multiple advantages. The fixing band is made of a skin-friendly light-weight material, so that the comfort of a patient is improved. A locking assembly, an electronic display screen, a hemostasis assembly and an intelligent pressure sensor are arranged on a double-layer shell of the compressor. The pressure intelligent sensor can feed back the pressure of the radial artery in real time, the implanted electronic chip has an AI algorithm, the compression pressure can be gradually reduced, and the pressure is intelligently controlled according to the pulse of the radial artery. The locking assembly rotates and shrinks the fixing belt through the rotary knob, and automatic pressure adjustment is achieved. The electronic display screen and the sensor are powered by the button cell. In addition, the device can be repeatedly used, a patient only needs to pay the cost of the disposable anti-infection transparent protective film on the inner side of the fixing band, the use cost is reduced, and cross infection is avoided. On the whole, the device is high in intelligent degree, comfortable to use, economical and practical, and capable of improving the hemostasis efficiency and reducing the nursing workload.

The application provides a kind of early warning system and method of radial artery compression hemostat based on multiple sensors, belongs to complication early warning technical field.The method comprises the following steps: S1, multiple types of physiological signals in the radial artery compression area are synchronously collected and digitized;S2, the temperature at the proximal end and the temperature at the distal end are subjected to discrete wavelet transform;the pulse signal is subjected to time domain analysis, and the pulse amplitude is extracted;S3, a temperature distribution model of the compression area is constructed based on the temperature difference signal;S4, the resistivity distribution of the compression area is reconstructed through the electrode impedance signal, and the bleeding position is located;S5, the pressure change rate is calculated based on the pressure digital signal;the pulse amplitude attenuation rate is calculated based on the pulse amplitude;the pressure change rate, the temperature gradient vector, the pulse amplitude attenuation rate and the bleeding index are fused through a weighted summation formula, and a comprehensive risk value is obtained.The application improves the complication-related parameter coverage rate through multiple sensors, and improves the timeliness and accuracy of complication early warning.

The utility model belongs to the technical field of medical instruments, and particularly discloses a wrist joint protective restraint device for radial artery catheterization, which comprises a restraint pad, the restraint pad comprises a palm side and a hand back side, a fixing splint is mounted on one side of the restraint pad close to a little finger, and the fixing splint comprises a first splint and a second splint. The first clamping plate is arranged on the palm side, the second clamping plate is arranged on the hand back side, the palm side and the hand back side of the restraining pad are connected through an elastic band arranged at one end, the elastic band is arranged on the side close to the thumb, the other end of the restraining pad is provided with a plurality of sets of fixing buckles for connection, and the fixing buckles comprise female buckles and male buckles which are correspondingly arranged. The female buckles are arranged on the first clamping plate at intervals, the male buckles are fixed to an elastic connecting belt, one end of the connecting belt is fixed to the second clamping plate, a visible window is formed in the palm side of the restraining pad, and an adhesive frame is arranged on the periphery of the visible window and connected to the palm side.

The application provides a radial artery compressor for critical patients in a cardiology department, and belongs to the technical field of medical devices. The radial artery compressor comprises a fixing plate, a bandage is arranged on the outer side of the fixing plate, a pressing assembly is further arranged, the pressing assembly is used for pressing and stopping bleeding at a hemostatic point of a radial artery of a patient, and the pressing assembly is connected with the fixing plate. The pressing assembly comprises a knob rotatably connected in the fixing plate, a rotating rod is threadedly connected in the knob, a connecting plate is fixedly connected to the bottom end of the rotating rod, slide rods are symmetrically and slidably connected in the connecting plate, and the two ends of the slide rods penetrate through the connecting plate and are fixedly connected with compression heads. The application adds a pressing and rubbing assembly to the pressing assembly, intermittent compression and release of the hemostatic point can be realized, the position of the pressing and rubbing assembly does not need to be adjusted, the pressing and rubbing can be directly performed after release, the operation process is simplified, secondary wearing is avoided, the continuous pressing of the hemostatic point without an empty window period can be ensured, and risks such as thrombosis and vascular occlusion can be prevented.

The invention discloses a traditional Chinese and western medicine fusion data analysis system and method based on a multi-mode sensor, and belongs to the technical field of intelligent medical treatment. The system comprises: (1) a tongue diagnosis module, which collects tongue images through a multispectral camera (400-1000nm), and extracts HSV color features (resolution of 0.1 degree) and LBP texture features (radius of 3 pixels); the pulse diagnosis module (2) adopts a laser Doppler sensor (850nm) to obtain a radial artery signal, and extracts pulse position / pulse potential / pulse shape three-dimensional features (sample entropy lt, 1.2 represents chordwise astringent pulse) through wavelet transform; and (3) the data processing module inputs the tongue vein features, fasting blood glucose (blood glucose + / -0.3 mmol / L precision), C-reactive protein and other western medicine biochemical indexes into a fusion decision model, dynamically distributes traditional Chinese medicine and western medicine weights (for example, the traditional Chinese medicine weight is smaller than or equal to 40% when the C-reactive protein is larger than 10 mg / L) through a typhoid miscellaneous disease rule base and a random forest algorithm, and generates physical feature vectors for health state classification. Organic cooperation of traditional Chinese medicine physical sign quantitative analysis and western medicine evidence-based medicine is achieved, the early-stage diabetes screening accuracy rate is improved by 23.7% (compared with single-mode diagnosis), and the method is suitable for family health monitoring and traditional Chinese and western medicine combined diagnosis and treatment.

The present invention discloses an artificial intelligence-based radial artery three-part pulse acquisition system, relating to the field of pulse detection technology. The system comprises an MCU control unit, an air pump and airbag unit, a stepper motor unit, and a pulse acquisition unit, each connected to the MCU control unit. The MCU control unit controls the air pump and airbag unit to inflate and deflate, while also controlling the upward and downward movement of the stepper motor unit to further fine-tune the applied pressure. The pulse acquisition unit collects and records pulse signal data based on changes in pressure. This system solves the problem of existing pulse acquisition devices that cannot precisely or independently control pulse pressure.

A radial artery blood flow monitoring device relates to the technical field of cardiovascular medicine. The radial artery blood flow monitoring device is based on a radial artery air bag compressor, an air bag is installed on the lower surface of the radial artery air bag compressor, the radial artery blood flow monitoring device comprises an air pump, a blood flow monitoring probe and a signal processor, the air pump is communicated with the air bag through an air supply pipe, and the blood flow monitoring probe is of an inverted-Y-shaped structure; the blood flow monitoring probes are embedded in the two sides of the radial artery air bag compressor, a first B-ultrasonic probe is arranged on one side of the lower end of each blood flow monitoring probe, a second B-ultrasonic probe is arranged on the other side of the lower end of each blood flow monitoring probe, one B-ultrasonic probe is used for monitoring the blood flow condition of the proximal end, and the other B-ultrasonic probe is used for monitoring the blood flow condition of the telecentric end. The upper end of the blood flow monitoring probe is connected with the signal processor through a wire. According to the scheme, the problems that in the operation process of an existing pneumatic compression device, the hemostasis pressure needs to be frequently evaluated and adjusted, the workload of nursing staff is large, and use and popularization are inconvenient are solved.

A smartwatch includes a watch body, an airbag, and a sensor. The watch body is electrically coupled to the sensor. The sensor is disposed on an inner wall of the airbag. When the smartwatch is worn on a wrist of the user, the airbag and the sensor cover the radial artery of the wrist. The sensor is configured to measure the plurality of pulse waves of the radial artery when the airbag is under different pressure strength. The watch body is configured to determine the blood pressure of the user based on the plurality of pulse waves.

The utility model provides a radial artery angiography sleeve pipe relates to medical instrument technical field, including inner tube and sleeve pipe, inner tube includes inner tube catheter seat and inner tube tube body, sleeve pipe includes sleeve pipe catheter seat and sleeve pipe tube body, is provided with joint part on inner tube catheter seat, joint part can be connected with sleeve pipe catheter seat cooperation, when using, the inner tube tube body is worn into sleeve pipe tube body, through joint part and sleeve pipe catheter seat, can lock cooperation between sleeve pipe and inner tube, and the adaptability is good, and it is not easy to cause gas embolism or thrombus, and the end of the middle cavity is closed in locking position, and blood will not overflow, avoid affecting operation operation, when the inner tube and sleeve pipe are synchronous in superselecting the big blood vessel on the bow, and the sleeve pipe and the inner tube are separated after pointing to the target blood vessel, and under the support of guide wire and inner tube, it is superselected to the target blood vessel to the distal end, and the controllability of catheter is increased, and the difficulty of superselection is reduced.

The present invention discloses a phase change-driven flexible wearable body temperature and blood pressure sensing device. The flexible auxiliary wristband and the body temperature visualization sensing skin are both sleeved on the wrist. The body temperature visualization sensing skin is used to represent different body surface temperatures. An installation cavity is provided in the middle of the flexible auxiliary wristband, and a thermochromic liquid-gas phase change flexible driver is embedded in the installation cavity of the flexible auxiliary wristband. The flexible auxiliary wristband on the side of the phase change flexible driver close to the wrist is fixedly connected to the pressure sensing module. The pressure sensing module is attached to the wrist, and the pressure sensing module is electrically connected to the processing circuit. After being energized and heated, the phase change flexible driver expands and deforms, and the phase change flexible driver presses the pressure sensing module, so that the pressure sensing module is pressed against the radial artery part of the wrist to collect pressure signals, and the processing circuit analyzes and processes the pressure signals to obtain blood pressure. The flexible wearable body temperature and blood pressure sensing device of the present invention has great application prospects in the fields of wearable equipment, health monitoring, etc.

The utility model discloses a hemostasis patch and a hemostasis system for stopping bleeding of a radial artery. The hemostasis patch comprises a hemostasis patch body and a hemostasis balloon arranged on the hemostasis patch body. The hemostatic patch main body is provided with a middle mounting part and three connecting bands extending from the mounting part to different directions; an open groove is formed in the mounting part, and the hemostatic balloon is fixed in the open groove. The hemostatic balloon is used for pressurizing and stopping bleeding of the opening of the radial artery, so that uniform pressure can be applied to the opening of the radial artery; the hemostatic effect on the radial artery is ensured.