78 results about "Oxyhemoglobin saturation" patented technology

The invention discloses an endoscope image processing method based on oxyhemoglobin saturation and multiple central wavelengths, and relates to the field of medical image processing.The method comprises the steps that a first initial image signal, a second initial image signal, a third initial image signal and a fourth initial image signal are obtained; calculating oxyhemoglobin concentration information of the target part according to the second initial image signal and the third initial image signal; calculating deoxidized hemoglobin concentration information of the target part according to the second initial image signal and the fourth initial image signal; calculating the oxyhemoglobin saturation of the target part according to the oxyhemoglobin concentration information and the deoxidized hemoglobin concentration information; performing brightness enhancement on the second initial image signal based on the oxyhemoglobin saturation to obtain a second enhanced image signal; and generating a target image according to the second enhanced image signal, the first initial image signal and the third initial image signal, wherein the target image is used for identifying the bleeding position of the target part.

The invention discloses an emergency nursing system capable of dynamically adjusting priority, which belongs to the technical field of emergency nursing and comprises the following steps: acquiring heart rate detection data, blood pressure detection data and oxyhemoglobin saturation detection data of a patient at preset time intervals, and filtering; setting a sliding time window, and respectively calculating a heart rate change rate, a blood pressure change rate and an oxyhemoglobin saturation change rate for the filtered heart rate detection data, the filtered blood pressure detection data and the filtered oxyhemoglobin saturation detection data in the sliding time window; correlation analysis is conducted on the heart rate change rate, the blood pressure change rate and the blood oxygen saturation degree change rate, parameter correlation characteristics are obtained, and a comprehensive parameter deterioration index is calculated; the comprehensive parameter deterioration index is compared with a preset threshold value, and whether a priority improvement mechanism is triggered or not is judged; and executing the priority lifting mechanism. By establishing a dynamic monitoring mechanism based on the change rate of the physiological parameters, real-time capture and quantitative analysis of the change trend of the illness state of the patient are realized.

The invention discloses a method for detecting heart rate, respiration and oxyhemoglobin saturation based on micro-vibration images, and belongs to the technical field of physiological detection and image processing. A camera collects facial micro-vibration videos of a testee in real time, uses an ROI algorithm to lock a facial key area, extracts RGB micro-vibration change signals to replace red light and near-red light signals, and determines whether the micro-vibration videos are abnormal or not; performing wavelet transform five-layer decomposition, three rounds of peak valley screening and abnormal value elimination on the RGB microvibration time sequence signal, performing fine tuning training by using a yov11 model, and calculating to obtain heart rate, respiration and blood oxygen physiological indexes. According to the invention, non-contact detection is realized through video acquisition and signal processing of micro-vibration of a face area, and the comfort level and the use convenience of a testee are improved; interference caused by motion artifacts, baseline drift and expression changes is eliminated through multi-scale wavelet denoising; the three-wheel peak-valley screening algorithm deeply excavates the features of the face micro-vibration signals, and the recognition accuracy of the signal peak-valley pairs is improved; and an abnormity elimination and self-feedback parameter adjustment mechanism improves the calculation precision.

The invention belongs to the field of artificial intelligence and contact type measurement, and discloses a blood oxygen saturation degree measuring method based on a smart phone camera. The method comprises the following steps: acquiring fingertip video data by using a smart phone under the condition of no external equipment, extracting a pulse photoplethysmography (PPG) signal from the fingertip video data, and constructing a multi-dimensional feature set through feature extraction and calculation; furthermore, the invention provides a two-channel deep learning model fusing a convolutional neural network and a long-short term memory network, the multi-dimensional feature set and the preprocessed PPG signal are processed in parallel, the advantages of the two networks in the aspects of feature extraction and time sequence modeling are fully exerted, and the accuracy of feature extraction and time sequence modeling is improved. And the sufficiency of the extracted features and the generalization ability of the model are ensured, so that the accurate estimation of the oxyhemoglobin saturation is realized. The research provides a feasible scheme for health self-examination in a family environment.

The invention discloses a chest image diagnosis method and system based on multi-modal sign collection, and relates to the technical field of medical image.The method comprises the steps that a chest image of a patient is obtained, electrocardiosignals and blood oxygen saturation data are synchronously collected, and an associated radiology report is obtained; the image lesion features and the frequency domain rhythm template are combined for processing, motion artifacts are eliminated through a frequency domain decoupling equation, and refined image features are output; inputting the refined image features and the text pathological semantic features into a bidirectional attention mechanism to generate fusion features, and splicing the oxyhemoglobin saturation data and the text pathological semantic features into a sign-text vector; and inputting the fusion feature and the sign-text joint vector into a multi-task loss function, and outputting a structured diagnosis report. According to the method, accurate elimination of motion artifacts is achieved through a frequency domain decoupling equation, and coupling calculation is conducted on an electrocardio rhythm template and image lesion features in a frequency domain space.

The invention relates to the technical field of vehicles, in particular to a vehicle oxygen supply method and device, computer equipment and a storage medium. According to the altitude and the oxyhemoglobin saturation, an oxygen demand index is determined, and the oxygen demand index is in positive correlation with the altitude and is in negative correlation with the oxyhemoglobin saturation; a target oxygen supply mode is determined from candidate oxygen supply modes according to the oxygen demand index, the numerical value of oxygen supply parameters is determined according to the oxygen demand index, and the candidate oxygen supply modes comprise at least two of seat headrest diffusion oxygen supply, air conditioner air outlet oxygen supply and nasal catheter oxygen supply. By adopting the method, the problem of single oxygen supply mode in the prior art can be improved.

The invention relates to a multi-sensor fused vital sign and motion posture monitoring system and method. The system comprises a photoelectric volume pulse wave acquisition module, an electrocardio acquisition module, an inertia measurement module, a synchronization module, an artifact suppression module, a contact state recognition module, a data quality evaluation module, a vital sign extraction module and an anomaly detection module. Synchronously acquiring a photoelectric volume pulse wave signal, an electrocardiosignal and motion information; suppressing motion artifacts in the photoplethysmography signal and / or the electrocardiosignal based on the motion information; identifying the contact state and generating a data quality indicator related to the measurement reliability in combination with the de-artifact physiological signal; when the data quality meets a preset condition, heart rate, oxyhemoglobin saturation and / or breathing information are extracted, and vital sign parameters are formed; and carrying out conjoint analysis on the artifact-removed physiological signal and the motion information, and marking heart rate rhythm abnormity and / or posture abnormity. According to the invention, the reliability and availability of vital sign monitoring can be improved.

The invention discloses an inpatient alarm bracelet system and method based on multi-parameter vital sign monitoring, and relates to the technical field of inpatient alarm bracelets. Matching corresponding vital sign parameter initial weights from a preset disease-parameter sensitivity mapping library, wherein the vital sign parameters comprise heart rate, respiratory rate, oxyhemoglobin saturation, body temperature and heart rate variability; the method comprises the following steps: establishing an individualized physiological fluctuation baseline model based on vital sign data collected at the initial stage of wearing in combination with a resting state time period identified by an acceleration sensor, and generating a dynamic reference interval; collecting photoelectric volume pulse waves, electrocardiosignals, body temperature and acceleration data, judging whether motion artifacts exist or not by analyzing the spectrum correlation between physiological signals and motion signals, and generating a signal quality mark; and calling the initial weight and the dynamic reference interval under the condition that the signal quality mark indicates that the data is valid.

The embodiment of the invention discloses a vehicle cabin oxygen supply control method and device, a vehicle and a storage medium, and the method comprises the steps: collecting image data of passengers in a vehicle cabin and pressure data of seats, and determining the types of the passengers based on the image data and the pressure data; based on the passenger type, the passenger blood oxygen saturation degree, the vehicle altitude and the cabin oxygen concentration, whether oxygen needs to be supplied to a vehicle cabin or not is judged; when the judgment result is that oxygen needs to be supplied to the vehicle cabin, determining the total oxygen demand based on the basic oxygen demand of each passenger category and the number of passengers; and oxygen is supplied to the vehicle cabin based on the total oxygen demand, so that the oxyhemoglobin saturation of the passenger is maintained in a blood oxygen reference range, and the oxygen concentration of the cabin is stabilized in an oxygen concentration standard range. According to the embodiment of the invention, the flexibility of a trigger mechanism and the oxygen supply accuracy during oxygen supply can be improved.

The invention relates to the technical field of risk scoring tools, in particular to a non-invasive simple risk scoring tool for traumatic hemorrhagic shock for wearable equipment. The method has the advantages that a non-invasive simple risk scoring tool for traumatic hemorrhagic shock is combined with clinical practice, economic benefits and time benefits are comprehensively considered, five vital sign indexes including systolic pressure, diastolic pressure, heart rate, respiratory rate and oxyhemoglobin saturation are used as the basis, a multi-factor Logistic regression method is used for constructing the risk scoring tool, and the risk scoring tool is used for evaluating the risk of traumatic hemorrhagic shock. The evaluation process does not need to depend on laboratory detection or highly specialized operators, and the first-aid personnel can master the use method in a short time and quickly complete evaluation. Due to the light design and the low operation threshold of the tool, the tool can be effectively applied in a non-professional scene, meanwhile, extra wounds to the wounded are reduced, the operation complexity is greatly reduced, and the risk scoring tool is more suitable for pre-hospital first aid and rapid deployment and application requirements in special scenes.

The utility model provides a clamping type fixing device for an oxyhemoglobin saturation clip. The clamping type fixing device comprises an elastic band, a fixing buckle and a cable fixing piece. Wherein the elastic band is suitable for being worn on the wrist of a patient; the fixing buckle is fixedly connected with one end of the elastic band, and the other end of the elastic band can be wound around the fixing buckle so as to be fixed on the fixing buckle; the cable fixing piece is fixed or formed on the fixing buckle and used for fixing a transmission line of the blood oxygen saturation degree clamp. When the blood oxygen saturation degree is monitored, the elastic band is worn on the wrist of a patient, then the finger sleeve of the blood oxygen saturation degree clamp is sleeved on the finger, the monitor is worn behind the elastic band, and after the monitor is worn, the transmission line is fixed in the cable fixing piece. According to the clamping type fixing device for the oxyhemoglobin saturation clip, the transmission line is fixed into the cable fixing piece, the transmission line can be clamped and fixed, and therefore the fingerstall can be further fixed to the finger in an auxiliary mode, and monitoring failure caused by the fact that the fingerstall slips off when the oxyhemoglobin saturation is monitored is avoided.

The invention discloses a pressure sore risk monitoring device and early warning system based on multi-sensor fusion, and the device comprises a film pressure sensor which is used for monitoring the body surface pressure; the temperature and humidity sensor is used for monitoring local temperature and humidity; the oxyhemoglobin saturation sensor is used for monitoring the oxyhemoglobin saturation of the tissue; the main control chip is used for calculating a risk score based on the body surface pressure, the local temperature and humidity and the tissue blood oxygen saturation degree. The system comprises a plurality of pressure sore risk monitoring devices and an upper computer. The upper computer is provided with a visual interface and dynamically displays a pressure thermodynamic diagram, a temperature and humidity curve and an oxyhemoglobin saturation trend. Flexible structure design and a multi-sensor fusion algorithm are combined, limitation of a traditional monitoring mode is broken through, the system has the advantages of non-sensitive wearing and all-weather continuous monitoring, visual early warning and personalized nursing suggestions are provided, accuracy, real-time performance and clinical nursing efficiency of pressure sore prevention are remarkably improved, and the system is suitable for popularization and application. The medical cost caused by severe pressure sores is effectively reduced.

The utility model discloses a non-invasive full-flexible skin flap transplantation post-operation multi-index monitoring wearable sensor which comprises a sealing cover sensing layer, a skin isolation layer and a sensor assembly arranged between the sealing cover sensing layer and the skin isolation layer. The sensor assembly comprises a strain sensor, a temperature sensor, a humidity sensor and a blood oxygen saturation degree sensor, the sealing cover sensing layer and the skin isolation layer are both made of flexible materials, and the lower layer of the skin isolation layer is used for making contact with the skin of a patient; the strain sensor, the temperature sensor, the humidity sensor and the oxyhemoglobin saturation sensor are respectively used for monitoring swelling, temperature, humidity and oxyhemoglobin saturation of a transplanted flap of a patient. The non-invasive full-flexible skin flap transplantation post-operation multi-index monitoring wearable sensor can non-invasively and continuously detect the swelling, temperature and humidity states of postoperative transplanted skin flaps and the change condition of blood oxygen saturation in real time, and the success rate of skin flap transplantation is increased.

The invention provides a tissue blood oxygen saturation measuring system and method for multispectral Cherenkov imaging, and relates to the technical field of Cherenkov imaging. The system comprises a single-pixel modulation imaging device, and the single-pixel modulation imaging device comprises a digital micromirror device which modulates Cherenkov light according to a plurality of different sampling templates; the circular-to-rectangular optical fiber is used for converting a light spot of the modulated composite light beam of each sampling template into a rectangle; the spectrograph comprises a slit for receiving the composite light beam of the rectangular light spot of each sampling template to form a linear light source of each sampling template; the blazed grating is used for carrying out spectrum separation on the line light source of each sampling template; the linear array photomultiplier is used for carrying out light intensity detection on the light beams subjected to spectrum separation to obtain multi-channel light intensity signals; and the processing unit is used for obtaining the oxyhemoglobin saturation of the to-be-detected tissue based on the light intensity data of each sampling template under the plurality of channels.

The invention relates to a method for processing a blood oxygen signal, a blood oxygen detection device, an electronic device, a storage medium and a computer program product. The method comprises the following steps: judging whether the range of a plurality of bSpO2 (bSpO2) values measured during a specified time window meets a preset condition or not; and selecting a range for calculating the bSpO2 values from the plurality of bSpO2 values according to a judgment result, and performing mathematical statistic calculation by using the bSpO2 values in the selected range to obtain the SpO2 value serving as an oxyhemoglobin saturation output value. Therefore, the detection precision of the SpO2 value can be improved.

The invention provides an in-vehicle oxygen concentration control method, device and equipment, and is applied to the technical field of in-vehicle oxygen concentration control. The method comprises the following steps: acquiring a vibration signal generated in the driving process of a vehicle and an original pulse signal of a driver; and dynamically offsetting the vibration interference component in the original pulse signal based on the vibration signal to obtain a denoised pulse signal of the driver. And determining the blood oxygen saturation degree of the driver according to the pulse signal after noise reduction. According to the oxyhemoglobin saturation and the preset threshold interval, the control instruction of the vehicle-mounted oxygen supply device in the vehicle is generated so as to adjust the in-vehicle oxygen concentration of the vehicle, and the problem that a traditional in-vehicle oxygen concentration control system is prone to being disturbed by vehicle vibration and consequently low in measurement precision can be solved.

The invention discloses a neonatal precise music treatment system based on amplitude integrated electroencephalogram awakening signals and a use method thereof. The neonatal precise music treatment system comprises a collection module, a customized music treatment content design module, an automatic closed-loop module and a safety guarantee module. The collection module is used for collecting the electrooculogram, the heart rate, the pulse oxyhemoglobin saturation and the amplitude integrated electroencephalogram, screening out an amplitude integrated electroencephalogram awakening signal according to the electrooculogram, the heart rate and preset three-level grabbing logic, and then obtaining the level of the amplitude integrated electroencephalogram awakening signal and the level of the brain function state; the customized music treatment content design module is used for generating music according to a preset source material library, the level of the amplitude integrated electroencephalogram awakening signal and the brain function state level; the automatic closed-loop module is used for controlling playing and stopping of music; and the safety guarantee module is used for controlling the volume and stopping working when the amplitude integrated electroencephalogram awakening signal is interrupted. According to the method and the device, the accuracy of awakening signal grabbing is improved.

The invention provides an interventional postoperative puncture point pressure self-adaptive regulation and control method based on bimodal feedback, and relates to the technical field of pressure regulation and control, and the method comprises the following steps: receiving a pressure safety range and an oxyhemoglobin saturation warning value; a real-time pressure signal and a real-time blood oxygen signal are obtained; generating a real-time prone position type; fitting and predicting a blood oxygen change track; constructing an initial pressure change vector; a pressure-blood oxygen dynamic response model is input for blood oxygen track prediction, and an initial blood oxygen change track and initial blood oxygen change time delay are output; gradient optimization iteration is carried out until a target pressure change vector and a target blood oxygen change time delay are output; incremental PID pressure regulation is performed on the pressure applying device. The technical problems that in the prior art, a manual pressurization bandaging method depends on manual monitoring and pressure adjustment, the pressurization strength cannot be accurately controlled in real time, pressurization is not stable, and the pressurization effect and stability are affected are solved.

The invention provides a state prediction method and device for a traumatic patient, electronic equipment and a storage medium, and belongs to the technical field of artificial intelligence. The method comprises the following steps: acquiring state parameters of a traumatic patient, wherein the state parameters comprise multiple of gender, age, systolic pressure, diastolic pressure, noninvasive blood pressure average value, heart rate, respiratory rate and oxyhemoglobin saturation; standardizing the state parameters to obtain input parameters; inputting the input parameters into a prediction model to obtain a first prediction probability output by the prediction model; wherein the first prediction probability is the probability that the traumatic patient has hemorrhagic shock, the probability that the traumatic patient needs to be infused with erythrocyte products of more than a set unit, the probability that the traumatic patient needs to receive an operation within a set time or the probability that the traumatic patient has poor prognosis. According to the invention, the shock probability, the probability of infusing red blood cell products, the probability of needing operations or the probability of poor prognosis of the traumatic patient can be predicted according to the state parameters of the traumatic patient.

The invention relates to the technical field of physiological data monitoring, in particular to an orthopedic postoperative patient physiological data analysis method and system.The orthopedic postoperative patient physiological data analysis method comprises the following steps that heart rate blood oxygen and limb activity data are collected, a heart rate fluctuation value, a blood oxygen change value and an activity range are extracted, and a multi-dimensional physiological feature sequence is constructed; and calculating a data change range in the sliding window of each dimension and a frequency change value of adjacent windows. According to the method, fine quantitative analysis of heart rate fluctuation, oxyhemoglobin saturation and limb movement amplitude is achieved by dynamically adjusting data time span and calculating indexes in a segmented mode, change characteristics of different recovery stages are adapted, data cleaning accuracy is improved through high-density region statistics and noise elimination, scientific induction of dynamic characteristics is ensured, and the method has good application prospects. In combination with feature extraction and trend analysis of an acute period, a functional reconstruction period and a stable period, comprehensive evaluation of inter-stage features is formed, and based on an offset rate, a prediction deviation value and abnormal signal trajectory labeling, the anomaly identification and real-time tracking capability is enhanced.

The utility model discloses a disposable forward guide tube for retrograde tracheal intubation, which belongs to the technical field of medical instruments and comprises a tube body, a guide joint, an air outlet and a jet vent hole, the guide joint is arranged at one end of the tube body, and the jet vent hole is connected to the top of the guide joint. A guide wire for retrograde tracheal intubation is inserted into the tube body and the guide joint, and an air outlet is formed in the outer surface of one end, far away from the guide joint, of the tube body. The guide tube has the advantages that when retrograde tracheal intubation is carried out through the guide tube, the guide wire can enter from the guide connector on the guide tube, so that the guide wire can smoothly pass through the tip end, the guide wire is convenient to pull, meanwhile, the guide tube is connected with an oxygen supply source through the jet vent hole, and the oxygen supply effect is good. And continuous oxygen supply can be achieved in the retrograde intubation process, the occurrence rate of oxyhemoglobin saturation is reduced, and the practicability of the guiding catheter is further improved.

The invention discloses a medical-grade transmission method blood oxygen ring which comprises a main board used for monitoring human body blood oxygen saturation data and a lithium battery used for providing a power source, the main board and the lithium battery are packaged on the inner side of an upper ring body and the inner side of a lower ring body respectively, and a power line is arranged at the output end of the lithium battery. The power line penetrates through the upper ring, the lower ring is installed on a power supply interface of the main board, a transmitting tube and a receiving tube are arranged at the two ends of the main board respectively, the transmitting tube is used for transmitting red light and infrared light to penetrate through a finger pulp to detect the oxyhemoglobin saturation, the receiving tube is used for receiving transmission light signals after penetrating through finger pulp tissue, and the transmitting tube and the receiving tube are distributed at an included angle of 110 degrees. According to the medical-grade transmission-method blood oxygen ring, a transmission-type method is adopted for penetrating through the finger pulp, the blood oxygen saturation degree is measured according to the intensity of transmission light attenuated after penetrating through the skin, the fat layer and the capillary bed, scattering interference of an optical signal by bone tissue and the subcutaneous fat layer is avoided, and the accuracy of a measurement result is improved.

The invention discloses a method and system for rapidly measuring electrocardiogram and pulse blood oxygen saturation, and relates to the technical field of medical detection equipment. According to the method for rapidly measuring the electrocardiogram and the pulse blood oxygen saturation degree, on the basis of a set time period, preset transmission light signal time sequence data of a first to-be-measured part and preset electrocardiosignal time sequence data between a second to-be-measured part and the first to-be-measured part are synchronously collected; performing optical filtering and amplitude adjustment processing on the transmission light signal time sequence data, and performing analysis based on a preset blood oxygen saturation analysis algorithm to obtain a pulse blood oxygen saturation value; the method comprises the following steps of: performing enhanced filtering and de-noising processing on electrocardiosignal time sequence data to generate an electrocardiogram waveform, extracting a QRS wave group from the electrocardiogram waveform, calculating a heart rate based on the QRS wave group, and displaying and outputting the heart rate. And the operation process is greatly simplified.

The utility model relates to the technical field of medical health, in particular to a human body multi-mode physiological signal acquisition device which comprises an acquisition host, a base arranged behind the acquisition host, a touch screen arranged on a front panel of the acquisition host, a camera arranged in the top of the touch screen and used for face recognition and acquisition, and a microphone port embedded in the bottom of the touch screen. A sensor interface is arranged on the upper side in the base, a signal transmission line is connected to the sensor interface through a connecting plug, the tail end of the signal transmission line is divided into two connecting lines, two sets of fingerstalls are connected to the two connecting lines respectively, and a heart rate sensor, a pulse sensor, a blood oxygen saturation degree sensor and a skin temperature and skin electric sensor are integrated in the two sets of fingerstalls. According to the utility model, a plurality of physiological sensors are integrated, a plurality of physiological signals including heart rate, pulse, oxyhemoglobin saturation, skin temperature and skin electricity, voice, face and the like can be synchronously acquired, and data are processed and analyzed through an advanced algorithm, so that the accurate assessment of the psychological state of an individual is realized.

The invention relates to the technical field of medical instruments, and provides a relative blood volume monitoring method and device for a hemodialysis pipeline based on double optical paths, the hemodialysis pipeline comprises a narrow-diameter section and a wide-diameter section which are connected, and the relative blood volume monitoring method comprises the following steps that S1, in dialysis treatment, red light and infrared light are adopted to irradiate the narrow-diameter section of the hemodialysis pipeline, and the narrow-diameter section of the hemodialysis pipeline is irradiated to obtain a blood volume monitoring result; the absorbance delta 1 red of the red light of the narrow-diameter section and the absorbance delta 1 infrared of the infrared light of the narrow-diameter section are calculated; s2, red light and infrared light are adopted to irradiate the wide-diameter section of the hemodialysis pipeline, and the absorbance delta 2 red of the red light of the wide-diameter section and the absorbance delta 2 infrared of the infrared light of the narrow-diameter section are calculated; s3, constructing an anti-oxyhemoglobin saturation change interference factor delta D red of the red light based on the delta 1 red and the delta 2 red; constructing an anti-oxyhemoglobin saturation change interference factor delta D infrared of the infrared light based on the delta 1 infrared and the delta 2 infrared; and S4, calculating the relative blood volume RBV based on the delta D red and the delta D infrared. The method has the advantage that accurate non-invasive monitoring of the relative blood volume is achieved.

The invention discloses a digital intelligent neurological critical patient tracheal intubation and extubation decision risk assessment system, and relates to the technical field of medical risk assessment, and the technical key points are that the system comprises a data acquisition module used for integrating clinical parameters of a patient, and obtaining oxyhemoglobin saturation, respiratory rate and airway secretion amount data in real time through an Internet of Things device; the model building module is used for receiving the data acquired by the data acquisition module, determining weight distribution by adopting a Delphi expert consultation method, and building a dynamic risk assessment model in combination with a machine learning algorithm; and the clinical decision module performs evaluation result analysis according to the dynamic risk evaluation model established by the model construction module, comprises a risk early warning subsystem, and generates a tube drawing suggestion when the real-time monitoring data triggers a preset threshold value. The system has a remarkable clinical application value, the nursing quality is improved, clinical decisions are supported through scientific risk assessment, and the working efficiency of medical staff is improved.

The invention relates to the technical field of medical image processing, in particular to a gastrointestinal anastomotic stoma healing real-time monitoring image analysis system which comprises an image acquisition module, a preprocessing module, a feature extraction module, a manifold construction module, a curvature analysis module, a geodesic prediction module, a risk assessment module and a decision support module. The system collects a continuous image sequence of a gastrointestinal anastomotic stoma area, extracts multi-dimensional features such as oxyhemoglobin saturation distribution, tissue morphology and blood vessel distribution, expresses a healing state as a low-dimensional manifold based on a differential geometry theory, detects abnormality through multi-scale curvature analysis, predicts a healing trajectory by using a geodesic theory, and performs multi-branch prediction. Risk grading and early warning are achieved, the healing state of the gastrointestinal anastomotic stoma can be objectively and quantitatively evaluated, nonlinear dynamic characteristics of the healing process are effectively captured, and potential abnormal healing is predicted 48-96 hours in advance.

The utility model discloses a pulse oximeter simulation system. The system mainly comprises a microprocessor, an information interaction module, a simulation finger module, a plurality of current-voltage converters, a plurality of digital-to-analog converters, a plurality of signal amplifiers and a plurality of analog switches. The simulation finger module is located between the light-emitting tube and the light receiver, comprises a red light receiver and an infrared light receiver, and is used for receiving light signals emitted by the target oximeter and converting the light signals into current signals. Through a series of converters, the current signals are converted into voltage signals, and the state of the analog switch is controlled according to the received infrared light signals. The information interaction module allows a user to input parameters such as finger thickness, oxyhemoglobin saturation and pulse rate so as to determine a perfusion coefficient, and signal conversion is performed by using a calibration curve. Finally, a simulation signal generated by the system is used for adjusting the brightness and the flicker mode of the red light emitting tube, so that effective simulation of the oximeter is realized. According to the invention, the output signal error caused by the parameter difference is relatively small.

A demand-adapting and auto-regulatory ECMO system and method is disclosed that may be configured to provide complete cardiopulmonary replacement. The system and method employ a blood gas exchanger having a blood inlet, a blood outlet, a gas inlet, and a gas outlet, an oxygen sensor positioned to detect oxyhemoglobin saturation at the blood inlet, and a carbon dioxide sensor positioned to detect exhaust gas CO2 concentration at the gas outlet. A controller communicates with the oxygen sensor and the carbon dioxide sensor and controls blood flow and gas flow through the blood gas exchanger in response to a sensed oxygen level by the oxygen sensor and a sensed carbon dioxide level by the carbon dioxide sensor, in turn maintaining the sensed oxygen level and the sensed carbon dioxide level within a pre-designated range of values to maintain a patient's metabolic requirements.

The invention relates to an intelligent hyperxemia-preventing alarm with blood oxygen saturation degree and inhaled oxygen concentration linked, and belongs to the technical field of medical health monitoring and intelligent control. The oxyhemoglobin saturation and inhalation oxygen concentration linked intelligent anti-hyperxemia alarm comprises a main control box, a monitoring sensing module, an execution and alarm module and a connecting circuit, wherein the main control box comprises a shell, a human-computer interaction interface, a connection port, a power supply interface and a standby battery compartment; the human-computer interaction interface comprises a display screen, a plurality of physical keys and indicator lights; the application prospect is wide, all patients needing oxygen therapy can be equipped with the device, and the application range is wide; according to the intelligent anti-hyperxemia alarm with the blood oxygen saturation degree and the inhaled oxygen concentration linked, accurate oxygen therapy can be conducted on a patient, the situation that the hospitalization time is prolonged due to complications such as oxygen poisoning is reduced, and the medical cost is reduced.