146 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 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 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.

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 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.

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 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 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.

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.

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.

A radial artery hemostasis device used after coronary angiography comprises a shell and a threaded rod, the inner wall of the shell is in threaded connection with the threaded rod, a radial artery hemostasis double-fixing structure is arranged on the right side of the outer wall of the shell, the lower end of the threaded rod is rotationally connected with a block through a bearing, and two sliding rods are fixedly connected to the upper end of the outer wall of the block. The outer wall of the sliding rod is in sliding connection with the shell. According to the radial artery hemostasis device used after coronary angiography, through cooperation of a radial artery hemostasis double-fixing structure and a hook-and-loop fastener, the vertical rod is pushed to abut against the ratchet wheel, a tree crown is pulled upwards to be separated from the ratchet wheel, meanwhile, the vertical rod can apply pressure to the spring, and after the arm of a patient is wound and fixed through the bandage, the arm is fixed through the hook-and-loop fastener. The bandage and the wrist of a patient can be doubly fixed through the hanging ring hooks and the hook-and-loop fasteners at the end and the tail end of the bandage, the problem that in the prior art, the bandage is fixed only through the hook-and-loop fasteners, and bleeding is caused by accidental loosening or falling off is solved, and then stability and completeness are effectively improved.

The utility model belongs to the technical field of medical instruments, and particularly relates to a radial artery hemostasis compression belt with pressure indication, which comprises a support plate, a compression air bag and a pressure indicator. The two ends of the supporting plate are bound to the wrist through two-section type hook-and-loop fastener bandages, and installation, detachment and tightness adjustment are convenient. The compression air bag is made of a medical-grade high-elasticity rubber material and adheres to the inner side of the supporting plate, and compression hemostasis is achieved. The pressure indicator can accurately monitor the compression pressure through the pressure scale marks on the piston, the elastic piece and the transparent cylinder, the pressure indication sensitivity can be adjusted by rotating the adjusting piece with the cross-shaped air hole, and misoperation is avoided. The hemostasis compression belt is further provided with an inflation connector with a one-way air inlet valve, and stable inflation is guaranteed. The use method is convenient, the adjusting part can be completely unscrewed, maintenance and replacement of internal parts and deflation and reset of the compression air bag are facilitated, storage, preservation and recycling of the hemostasis compression belt are facilitated, the medical cost is reduced, and popularization and use are facilitated.

The utility model belongs to the technical field of medical apparatus and instruments and provides a radial artery intervention operation compression hemostat, including support plate, bandage, compression hemostat mechanism, radial bone clamping plate and ulna clamping plate, radial bone clamping plate top end rotation connection is in support plate left end, and ulna clamping plate top end sliding is established in support plate right -hand side, and the bottom surface of support plate right -hand side is provided with the vertical board, and the vertical board is provided with the screw rod in screw connection, and radial bone clamping plate bottom end and ulna clamping plate bottom end all are set up strip -shaped bushing, and the right end of bandage is fixed in ulna clamping plate bottom end, and its left end bottom surface is provided with magic tape hair surface and magic tape hook surface at intervals. The compression hemostat can use radial bone clamping plate and ulna clamping plate to clamp radial bone and ulna from both sides of wrist to position, and bandage does not contact with the back of wrist, so that the bandage does not cause compression to the back of wrist vein, and the compression hemostat is not easy to rotate around the wrist axis, and the installation structure is relatively stable, and the probability of displacement of compression hemostat mechanism and puncture point compression failure can be reduced.

The utility model relates to the field of medical apparatus and instruments, disclose a kind of postoperative far radial artery pressure hemostat, including wristband, the inner surface of wristband is fixedly connected with air bag, the inner wall of air bag is fixedly connected with connecting pipe, the end of connecting pipe is fixedly connected with three-way inflation port, the inner wall of three-way inflation port is inserted with inflator needle cylinder, the surface of three-way inflation port is provided with finger end demonstration needle, the outer wall of wristband is fixedly connected with soft magnetic sheet one, the outer wall of soft magnetic sheet one is magnetically connected with soft magnetic sheet two, the outer wall of soft magnetic sheet two is fixedly connected with U-shaped frame. In the utility model, by being provided with soft magnetic sheet one, soft magnetic sheet two, reel and the structure, when wristband is used, it can provide certain degree of limiting function to wristband by middle finger ring and thumb ring, avoid the process that patient wears hemostat due to patient activity or accidental touch to cause hemostat displacement, to ensure hemostatic effect.

The invention discloses a wearable pulse wave cardiovascular disease diagnosis method based on dual-mode sensing, and relates to the technical field of biomedical equipment and physiological signal processing. The method comprises the specific steps of equipment configuration and mode switching triggering, radial artery positioning detection and confirmation, fitting control and dual-mode signal acquisition, disease risk level determination and risk level matching and suggestion generation. Precision evaluation of cardiovascular disease risks is achieved through the pressure waveform and photoelectric waveform fusion technology, the early diagnosis ability is improved, through cooperative work of the array type pressure sensor and the photoelectric sensor, the stability and accuracy of pulse wave signal data acquisition are ensured in combination with dynamic air bag wrist strap pressure control, and the accuracy of pulse wave signal data acquisition is improved. After the collected data is preprocessed, key feature values are extracted, fusion feature values are generated through a dual-mode fusion formula, and finally the disease risk level is quantified through a risk assessment model, so that the accuracy of cardiovascular disease risk assessment is effectively improved.

The utility model provides a zipper type warm-keeping device capable of preventing a radial artery compressor from being scratched. The zipper type warm-keeping device comprises a first main body belt, a first connecting base, a first connector, a second main body belt, a second connecting base and a second connector. The first connecting base is arranged on one side of the first main body belt; the first connector can be connected to the first connecting base; the second main body belt is connected with the first main body belt through a zipper structure; the second connecting base is arranged on one side of the second main body belt; the second connector can be connected to the second connecting base. During use, a sleeve is cut open, the first connecting base penetrates through the cutting section to be connected with the first connector, and the sleeve is fixed to the first main body belt; similarly, the sleeves are fixed with the second main body belt; when the garment is worn, arms are put into the sleeves from the cut sections, and the sleeves are zipped to proper positions through the zipper structures according to the positions of the radial artery compressors. The upper limbs and shoulders of the puncture side of a patient can be covered with the sleeves, and the temperature of the limbs of the puncture side of the patient is maintained.

The present invention provides a catheter and a treatment method that easily reach the uterine artery, the prostate artery, and engage from the radial artery. A catheter (1) for uterine artery engagement has a tubular body that communicates from a base end to a front end, the tubular body (2) has a shape portion (24) that is bent on substantially the same plane (X) to impart a shape, the shape portion (24) has a base end side bend portion (25) that is bent at a prescribed first angle (θ1), a front end side bend portion (27) that is prescribed a second angle (θ2) at a position further toward the front end side than the base end side bend portion (25), and is bent toward the same side as the base end side bend portion (25), a straight line-shaped intermediate straight line portion (26) that is disposed between the base end side bend portion (25) and the front end side bend portion (27), and a straight line-shaped front end side straight line portion (28) that is disposed further toward the front end side than the front end side bend portion (27), the first minimum curvature radius (R1) at the base end side bend portion (25) is 3 times or more and 11 times or less of the second minimum curvature radius (R2) at the front end side bend portion (27).

The invention discloses a self-driven multifunctional sensor for an artificial hand wrist. An angle-speed detection mechanism and a pulse measuring ring are integrated; the angle detection mechanism is composed of a first rotor disc, a fixed stator disc and a friction layer, the first rotor disc and the fixed stator disc can rotate relatively, and sine electric signals corresponding to angle changes are output when the wrist bends and stretches based on the friction electrification effect. The speed detection mechanism generates a characteristic cycle electric signal related to the rotating speed through friction between a second rotor disc and a fixed electrode disc with a specific electrode; the pulse measuring ring is integrated on the inner side of the watchband, and the built-in flexible piezoelectric sensing module is tightly attached to the radial artery of the wrist, so that pulse fluctuation can be directly detected; the whole device does not need an external power supply, can generate sensing signals in a self-driven mode through mechanical friction and pulse pressure, and synchronously achieves simultaneous measurement of the wrist angle, the rotating speed and the pulse signals by means of a four-channel high-speed electrical measuring instrument and a multi-channel serial port circuit.

Provided is a pulse wave measurement device in which a pulse wave sensor can be appropriately disposed with respect to the radial artery regardless of the circumference of the wrist. A pulse wave measurement device (100) is provided with: a first arm (10) and a second arm (20) that are relatively swingable about a first axis extending in a first direction along the longitudinal direction of a radial artery (110); a pulse wave sensor (31) mounted on the tip of the first arm (10); and a movable part (40) connected to the second arm and capable of moving in a direction toward or away from the pulse wave sensor.

According to the radial artery compression control method based on the intelligent release compressor, an incremental PID algorithm is combined with a high-precision sensor, the pressure adjusting error is smaller than or equal to + / -3 mmHg and is better than that of a traditional mechanical compression device (the error is + / -15-20 mmHg), and the skin injury risk caused by excessive compression is reduced; a bleeding monitoring mechanism, a displacement monitoring mechanism and a fault monitoring mechanism are integrated, the response time is less than or equal to 100ms, and the safety is remarkably improved compared with manual observation; a 15% stepped pressure reduction proportion is preset, the blood vessel healing physiological process (thrombus strength is gradually increased in 1-6 hours after operation) is met, and the hemostasis failure rate is reduced compared with loosening in fixed time (for example, deflation is performed once every 2 hours); bluetooth transmission is in butt joint with a hospital HIS system, and complete storage of a pressure curve (the sampling interval is 1 second), alarm records and operation logs is achieved.

1. The name of the design product: semiconductor laser therapeutic instrument. 2. The use of the design product: for wearing on the wrist, by irradiating the acupoint (radial artery), to achieve the purpose of preventing and treating diseases such as improving blood rheological properties and reducing blood viscosity. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

This application belongs to the field of medical device technology and discloses a pulse wave simulation teaching device, including a host computer, a motor, a piston pump, a simulated heart, a bionic hand, a pressure sensor, and a piston-filled bellows. The simulated heart, bionic hand, and piston-filled bellows are connected sequentially through pipes to form a circulating loop containing liquid. The wrist of the bionic hand has a radial artery tube modeled after the human radial artery. The pressure sensor is used to measure the liquid pressure at the radial artery. The host computer controls the motor to work under different motion states so that the piston pump drives the simulated heartbeat, thereby driving the liquid to flow through the radial artery tube to form various different pulse waves. The host computer displays the pulse wave diagram based on the detection results of the pressure sensor for the user to refer to and compare. Thus, it can more realistically simulate various different human pulse waves and has a simple structure and is easy to use.

The invention belongs to the technical field of medical instruments, and particularly relates to an intelligent radial artery compression hemostat and a hemostasis method thereof, a micro stepping motor, a compression head, a film type pressure sensor and an infrared reflection type sensor are integrated, and high-precision application and real-time dynamic adjustment of compression force are achieved through mechanical and electrical integration design. The device adopts a closed-loop control strategy based on a PID (Proportion Integration Differentiation) algorithm, can automatically complete the processes of initial pressurization, dynamic pressure stabilization and segmented pressure reduction, realizes 360-degree real-time monitoring and feedback regulation of a bleeding state, and effectively avoids postoperative complications caused by overpressure or pressure leakage. The hemostasis efficiency is improved, the medical care burden is relieved, and good clinical adaptability and popularization prospects are achieved.

This invention belongs to the field of medical device technology and discloses a finger rehabilitation exercise device for radial artery hemostasis. The device includes a hand ring with a traction component installed on its front side. The traction component is connected to four connecting ropes spaced vertically. Finger sleeves are connected to the ends of the connecting ropes, and elastic return ropes are connected to the rear side of the finger sleeves. Four positioning adjustment components with vertical spacing are located on the rear side of the hand ring. These positioning adjustment components are movably connected to the elastic return ropes, automatically driving the fingers to complete regular flexion and extension exercises. This effectively promotes blood circulation in the hand, prevents finger swelling and stiffness and venous thrombosis, while not affecting wrist hemostasis compression. The adjustable intensity can adapt to different patients, significantly improving the safety and convenience of postoperative rehabilitation.

The present invention is a method of adjusting a pulse wave measurement device attachable to a user's wrist. The pulse wave measurement device includes: a pulse wave sensor including a strain gauge and configured to acquire pulse wave by measuring radial artery pulse; pressing part for pressing the pulse wave sensor to the radial artery; and output part for outputting a measured value of the pulse wave sensor as digital signal. The adjusting method includes: acquiring pulse wave using pulse wave sensor when the pulse wave measurement device is attached to user's wrist, and outputting measured value thus acquired, as a digital signal; comparing voltage level of the digital signal with a range previously set with respect to maximum voltage level of output part; and adjusting or instructing pressing force on pulse wave sensor in a case where voltage level of the digital signal is outside the previously set range.

The utility model relates to the technical field of medical equipment, and discloses a postoperative radial artery miniature pressure measuring device which comprises a fixing frame, a gauge stand is fixedly connected to the top end of the fixing frame, a shell is fixedly connected to the top end of the gauge stand, a pressure measuring gauge hand is movably connected to the top end of the shell, a connecting port is formed in the center of the front end of the gauge stand, and the pressure measuring gauge hand is movably connected with the connecting port. The surface of the connection port is provided with a protection assembly which can be flexibly disassembled and assembled. According to the postoperative radial artery miniature pressure measuring device, through the arrangement of the fixed disc, the fixed groove, the positioning block, the protective cover plate, the sealing round pad and the movable rod, powerful sealing protection is provided, foreign matter invasion is effectively prevented, bacterial infection is caused, the use safety is improved, and the problems that manual pressure measurement is conducted on the radial artery manually, but continuous manual pressing is needed, and the pressure measuring efficiency is high are solved. The precision of a measurement result is influenced by displacement of pressure measurement equipment, so that full-sealing protection cannot be provided for a connecting port of a pressure measurement pipeline, and bacterial infection is easily caused when foreign matters such as bacteria invade.

The invention belongs to the technical field of medical instruments, and particularly provides a radial artery hemostat for critical medical patients, which is composed of a wrist strap, a frame, a host bottom plate, a power mechanism, a one-way valve, an observation window, a pressing piece, an alarm device and a switch. According to the device, a motor drives a gear and a threaded rod to transmit, a sliding pipe is driven to push a pressure piston in a hydraulic pipe, and liquid is pressed into a pressing bin to push a pressing piece for pressing; pressure is monitored through the force sensitive resistor, and when the pressure is too large, the alarm device is automatically triggered to give an audible and visual alarm; the reverse rotation of the motor is matched with the electromagnet to open the one-way valve to automatically relieve the pressure, and the popping shifting rod can be pulled in emergency to quickly pop out the host bottom plate. The device integrates accurate hydraulic driving, pressure monitoring and alarming, convenient operation and rapid first-aid separation, and the problems that an existing radial artery hemostat is not accurate in pressure control, lacks an alarming mechanism and is complex in operation are effectively solved.