49 results about "Pulse rate" patented technology

The invention discloses a traditional Chinese medicine pulse diagnosis instrument based on multi-modal analysis and a detection method thereof.The device is composed of a shell, a master controller and three sets of pulse diagnosis components used for the cun pulse position, the guan pulse position and the chi pulse position, and each pulse diagnosis component integrates an air path sensing module, an optical sensing module and a pressure sensing module; through cooperative work of the pneumatic piston, the liquid annular bag, the thin film pressure sensor and the optical sensor, accurate collection of pulse signals is completed. The system has the automatic locating and fitting function of three-dimensional linkage of the y axis, the theta axis and the z axis, intelligent locating and layered pressurization of wrist pulse positions can be achieved, and the pulse taking manipulation of'lifting, pressing and searching 'of traditional Chinese medicine is simulated. The device synchronously obtains multi-mode signals such as pulse position, pulse rate, pulse law, pulse shape and pulse potential, and after general control filtering, correction and fusion algorithm processing, a standardized feature matrix is formed and input into a multi-mode fusion model for pulse condition classification and automatic dialectical analysis. According to the device, a visual analysis result is generated based on pulse condition characteristics in combination with eight-line syndrome differentiation and viscera syndrome differentiation.

An embodiment for determining a blood-oxygen level (e.g., SpO2) of a subject includes exposing a body portion of the subject to more than two wavelengths of electromagnetic energy, receiving a portion of the more than two wavelengths redirected by the body portion, converting the received portion of the redirected more-than-two wavelengths into signals each representing a respective group of at least one of the more than two wavelengths, and determining the blood-oxygen level (e.g., SpO2) of the subject in response to the signals. For example, such an embodiment can determine the blood-oxygen level of the subject with little or no skin-tone bias. That is, such an embodiment can determine the blood-oxygen level of the subject independently of the subject's skin tone, i.e., with little or no skin-tone-induced corruption of the determined blood-oxygen level.

1. The name of the design product: medical and preventive core wrist ECG and blood pressure recording smart watch (G1). 2. The use of the design product: for smart watch, detecting human ECG, blood pressure, pulse rate, heart rate and blood oxygen saturation monitoring, sleep monitoring, stress and emotion monitoring, and recording and analyzing health data. 3. The design points of the design product: the combination of shape and pattern. 4. The picture or photo that best indicates the design points: perspective view 1.

A blood oxygen concentration measurement device includes a light source unit, a light detection unit, a signal processing circuit, and a control unit. The light source generates a light signal. The light detection unit receives a penetrating signal generated by the light signal penetrating an object to generate a detection signal. The signal processing circuit receives the detection signal and processes the detection signal to generate a first processing signal. The control unit receives the first processing signal, calculates the blood oxygen value, the pulse rate and the signal strength index according to the first processing signal, and outputs the blood oxygen value, the pulse rate, and the signal strength index, or performs a low perfusion signal measurement process according to the signal strength index and the first predetermined index.

Systems and methods for laser catheter treatment in a vessel lumen. The method includes inserting the laser catheter to a location of a treatment region within the vessel lumen; presenting an image of the treatment region within the vessel lumen based on using an ultrasound (US) imaging system; and detecting in real-time a bubble cloud dependent on laser catheter operation in the treatment region (at a prescribed speed and controlling flux and pulse rate). The method determines vessel diameter, real-time location and measurements of the bubble cloud, and estimates dwell location and dwell time. A dynamic display image is presented indicating progress of the laser catheter treatment, and a command to modify laser catheter parameters can be generated in response to the estimated dwell location, the estimated dwell time, and a recommended treatment regimen.

This invention relates to the field of medical device technology, and more particularly to an intelligent probe patch for monitoring blood circulation in microscopic free flaps, comprising: a disposable probe patch configured to be attached to the surface or edge of the free flap; a biocompatible adhesive layer is provided on the bottom surface of the flexible base of the disposable probe patch, and an auxiliary structure is provided on the top of the flexible base to resist postoperative tissue activity or secretions; the disposable probe patch integrates an optical sensing unit and a temperature sensing unit for collecting local blood oxygen saturation, pulse rate, and surface temperature of the flap, respectively; a repeater, establishing non-contact near-field coupling with the disposable probe patch, the repeater being configured to provide working power to the disposable probe patch through near-field coupling, enabling it to operate without a built-in battery; and synchronously receiving physiological parameter data reflecting the local microcirculation status of the flap collected by the disposable probe patch; and a terminal device, wirelessly connected to the repeater, receiving and processing the physiological parameter data.

To more accurately evaluate heat stress experienced by a user.SOLUTION: The wearable terminal includes a sensor that detects a pulse rate of a user, and a controller. The controller estimates an intensity of exercise by the user from the number of pulses detected by the sensor, and determines that the user is experiencing heat stress when a degree of decrease in the number of pulses is smaller than a predetermined reference value in a period in which the estimated intensity of the exercise has decreased. Iga.SELECTED DRAWING: Figure 5

The invention is based on a method of using a laser feedback interference (LFI) sensor (10), in particular a virtual retinal display (12), preferably in data glasses (14), in which at least one laser beam (16) is output by the LFI sensor (10), and in which a reflected signal (18) originating from a previously output laser beam (16) is recorded by the LFI sensor (10). According to the invention, the pulse rate of the owner of the eye (24) and / or the blood flow direction of at least one blood vessel of the eye (24) is determined from a detected reflected signal (18) of the LFI sensor (10), said reflected signal comprising a laser speckle reflection pattern (20) of the retina (22) of the eye (24).

This application provides a clinical method, system, device, and medium for detecting bowel and bladder movements. First, raw pulse rate time-series data of the patient is collected. The raw pulse rate time-series data undergoes quality verification and signal cleaning to obtain effective pulse rate time-series data. Based on the effective pulse rate time-series data, the mean pulse rate within the current detection window is calculated, and a pre-determined individualized resting pulse rate baseline value is obtained. The difference between the mean pulse rate within the current detection window and the individualized resting pulse rate baseline value is determined as the dynamic pulse rate offset. The dynamic pulse rate offset is judged using predefined bowel and bladder behavior detection rules, and the event confidence level for the current time period is output. The event confidence level is compared with a preset clinical decision threshold. If the event confidence level exceeds the clinical decision threshold, a graded early warning signal is generated and pushed to the clinical nursing system. The above scheme can achieve non-invasive detection of clinical bowel and bladder events.

To provide a non-contact pulse estimation device, etc. by a thermal camera that is more accurate than a conventional one.SOLUTION: A non-contact pulse estimation device for estimating a pulse from video data acquired by a thermal camera includes: a frequency analysis unit for executing frequency analysis for a plurality of pulse signals extracted from the video data; and a pulse component determination unit for determining a frequency component having a maximum amplitude in a pulse frequency range, which is a frequency range likely to be a pulse component, of frequency components output by the frequency analysis unit, as a pulse component.SELECTED DRAWING: Figure 1

1. The name of the design product: pulse oximeter. 2. The use of the design product: for blood oxygen saturation and pulse rate monitoring. 3. The design features of the design product: in shape. 4. The picture or photograph best indicating the design features: perspective view 1. 5. Other circumstances requiring explanation Other explanation: A part is a display panel.

A method for determining a risk of sepsis in a patient is disclosed. The method includes collecting an exhaled breath sample, determining a NO concentration in the exhaled breath sample; and determining a sepsis risk score correlated to the NO concentration, wherein the sepsis risk score is indicative of a risk of a patient having or developing sepsis. The method may further include determining an additional measurement of the patient's vital statistics including one or more of: end tidal CO2, respiratory rate, pulse rate, body temperature, cognitive assessment score, systolic blood pressure, diastolic blood pressure, or hemoglobin oxygen saturation level, and further determining the sepsis risk score based on the additional measurement.

1. Name of the product in this design: Ambulatory Blood Pressure Monitor (ACF-D1 Pro Series). 2. Purpose of this design: to dynamically monitor a patient's blood pressure and pulse rate. 3. The key design features of this product are: the main view. 4. The image or photograph that best illustrates the design's key features: the front view.

A method for deriving a measure of PPG variability which is indicative of fluid responsiveness. The PPG signal is processed with an adaptive re-sampling algorithm which re-samples the signal with a sampling density which is a function of instantaneous pulse rate. When the PPG signal is subsequently transformed with a discrete frequency-domain transform such as an FFT, the resulting frequency spectrum reflects a variability of the sample in which the FM contribution is largely eliminated. This provides variability information which is more reflective of the AM contribution which is the dominant contribution associated with respiration.

The application relates to a blood pressure calculation method and device, a blood pressure measuring device, a computer device and a storage medium. The method comprises the following steps: acquiring a pressure signal of an inflation pump of a blood pressure measuring device in an inflation process; performing pulse wave peak identification according to the pressure signal to generate a peak value sequence; determining a pulse rate according to the peak value sequence, determining a target highest peak value in the peak value sequence, and determining the highest peak value as an average pulsatile pressure; performing asymmetric Gaussian fitting on the peak value sequence with the target highest peak value as the center to obtain a fitted peak value curve; and calculating a blood pressure parameter according to the peak value sequence, the fitted peak value curve and the position of the target highest peak value. The blood pressure parameter comprises a systolic pressure value and a diastolic pressure value. The method converts the pressure signal of the inflation pump in the inflation process into a peak value sequence, analyzes the peak value sequence and calculates a blood pressure parameter, and the accuracy of blood pressure parameter calculation is improved.

1. The name of the design product: dynamic blood pressure monitor. 2. The use of the design product: for measuring systolic pressure, diastolic pressure and pulse rate of adult in different time periods set within 24 hours. 3. The design points of the design product: in the combination of shape and pattern. 4. The picture or photo that best indicates the design points: perspective view.

The application relates to the field of digital research of traditional Chinese medicine pulse diagnosis, and particularly provides a kind of pulse recognition method of P-P interval sequence pulse rate disorder based on knot pulse, which comprises the following steps: S1, obtaining a sample to be tested; S2, extracting time information of the same feature point from a continuous pulse signal to construct a corresponding PP interval time sequence; S3, threshold processing is performed on the PP interval time sequence, and a pulse signal category is obtained according to the threshold processing result.The method extracts the local maximum value point in the pulse signal, and differentiates the time information to obtain the PP interval time sequence; threshold processing is then performed to obtain pulse rate variation information, and the rhythm is judged according to the threshold greater than 0 to determine the pulse, knot pulse and normal pulse rate.The application performs threshold processing on the P-P interval sequence, converts the normal pulse rate band into 0, makes the pulse rate disorder band have a higher signal-to-noise ratio, and is easy to display, thereby effectively improving the recognition accuracy of the normal pulse rate, pulse and knot pulse.

Systems and methods for laser catheter treatment in a vessel lumen. The method includes inserting the laser catheter within the vessel lumen to a location of a treatment area; presenting an image of the treatment area within the vessel lumen based on using an ultrasound (US) imaging system; and, detecting, in real-time, a bubble cloud that is a function of the laser catheter operation (at a prescribed speed and controlling a fluence and a pulse rate) in the treatment area. The method determines a vessel diameter, a real-time location and measurements of the bubble cloud, and estimates a dwell position and dwell time. A dynamic displayed image that is indicative of a progression of the laser catheter treatment is presented, and commands may be generated to modify the laser catheter parameters responsive to the estimated dwell position, the estimated dwell time, and a recommended treatment protocol.

A wearable transthoracic echocardiogram patch employing an ultrasound imager and a cardiac compression monitor. When the ultrasound imager is affixed to a patient's chest during cardiopulmonary resuscitation of the patient, the ultrasound imager is operated to generate a series of ultrasound images of a compression of a cardiac structure of the patient during the cardiopulmonary resuscitation of the patient, and the cardiac compression monitor is operated to derive a compression profile of the cardiac structure from the series of ultrasound images generated by the ultrasound imager during the cardiopulmonary resuscitation of the patient. The cardiac structure can be a right ventricle or a left ventricle, and the compression profile can be derived from a perimeter, a volume, a pulse rate, a blood flow rate, a blood pressure level, and / or an electrical activity level of the segmented cardiac structure.

An apparatus includes a photoplethysmography (PPG) sensor configured to measure a PPG signal associated with a user, an accelerometer configured to measure an acceleration signal associated with the user, and a processor operatively coupled to the PPG sensor and the accelerometer. The processor is configured to determine whether the user is engaging in movement based on the acceleration signal, in response to determining that the user is engaging in movement, determine a type of movement of the user based on the acceleration signal, generate a probability distribution associated with a pulse rate of the user based on the type of movement, and determine the pulse rate of the user based on the PPG signal, the acceleration signal, and the probability distribution.

The present invention relates to flow measurement in a vessel. In order to provide a facilitated and less complex determination of the average peak velocity based solely on a plurality of ultrasound signals, a device (10) for flow measurement in a vessel is provided that comprises a data input (12), a processor (14) and an output interface (16). The data input is configured to provide a plurality of ultrasound signals that relate to blood flow within the vessel. The processor is configured to generate blood flow velocity data based on the plurality of ultrasound signals; to detect a measure for similarity or variation based on the plurality of ultrasound signals; to ascertain a pulse rate based on the detected measure for similarity or variation; and to compute, based on the estimated pulse rate, an average parameter value for a blood flow parameter, which blood flow parameter is generated from the plurality of ultrasound signals. The output interface is configured to provide the average parameter value to a user for further assessment.

The invention 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.

Some embodiments provide a wearable monitoring device including a motion sensor and a photo (PPG) sensor. The PPG sensor includes (i) a periodic light source, (ii) a photo detector, and (iii) circuitry determining a user's heart rate from an output of the photo detector. Some embodiments provide methods for operating a heart rate monitor of a wearable monitoring device to measure one or more characteristics of a heartbeat waveform. Some embodiments provide methods for operating the wearable monitoring device in a low power state when the device determines that the device is not worn by a user.

An embodiment for determining a blood-oxygen level (e.g., SpO2) of a subject includes exposing a body portion of the subject to more than two wavelengths of electromagnetic energy, receiving a portion of the more than two wavelengths redirected by the body portion, converting the received portion of the redirected more-than-two wavelengths into signals each representing a respective group of at least one of the more than two wavelengths, and determining the blood-oxygen level (e.g., SpO2) of the subject in response to the signals. For example, such an embodiment can determine the blood-oxygen level of the subject with little or no skin-tone bias. That is, such an embodiment can determine the blood-oxygen level of the subject independently of the subject's skin tone, i.e., with little or no skin-tone-induced corruption of the determined blood-oxygen level.

A neural processing unit includes a controller to receive a compiled machine code of an artificial neural network (ANN) model for predicting cardiovascular disease, the ANN model configured to receive sensing data of ECG, respiration, pulse rate, acceleration, and / or body temperature and to output a probability of disease onset for cerebral infarction, heart failure, and / or ischemic heart disease in a user; an input circuit configured to receive a plurality of input signals corresponding to the ANN model; a processing element (PE) array to perform a calculation of the ANN model; a special function unit (SFU) to perform a special function of calculating the ANN model; and an on-chip memory to store operation data of the ANN model, wherein the controller controls the PE array, the SFU, and the on-chip memory to process the ANN model according to data locality information of the ANN model included in the compiled machine code.

1. Name of the designed product: multi-parameter acquisition recorder (wearable). 2. Use of the designed product: bracelet recorder for monitoring medical pulse rate, blood oxygen, electrocardiogram, blood pressure, etc. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view.

The invention provides a wearable sock type toe blood supply and oxygenation state monitoring device which comprises a sock body structure, and the big toe part of the sock body structure is of a double-layer silk thread woven structure; wherein the double-layer silk yarn woven structure comprises a first thumb silk yarn woven layer and a second thumb silk yarn woven layer, an interlayer cavity used for placing the detection assembly is formed between the first thumb silk yarn woven layer and the second thumb silk yarn woven layer, and the detection assembly comprises a flexible circuit board. The blood oxygen and pulse rate detection module is used for measuring the blood oxygen saturation degree and the pulse rate of the tail end of the big toe in real time, and the buzzer and the alarm module are used for giving an alarm when monitoring data are abnormal. The device has the advantages that continuous dynamic monitoring of the far end of the lower limb can be achieved, the sensor is integrated to the toe portion, real-time evaluation of the most sensitive area of peripheral blood supply is achieved, and the blank of lower limb microcirculation monitoring of existing equipment is filled up.