68 results about "Saturation level" patented technology

This device for detecting oxygen saturation of percutaneous muscle comprises a light source for causing light to enter the body, and a first light detector and a second light detector for detecting reflected light reflected in the body. The second light detector is positionally shifted, in the circumferential direction about the light source, from a first imaginary line linking the light source and the first light detector.

Provided is a method and a system for noninvasive measurement of blood viscosity based on oxygen saturation and blood flow rate, which may easily and quickly calculate the blood viscosity by using the method and the system for noninvasive measurement of blood viscosity based on oxygen saturation and blood flow rate, thereby enabling immediate obtaining of the blood viscosity.

This invention relates to the field of ventilator technology, and discloses a method, device, ventilator, and medium for managing mechanical ventilation in a ventilator. The method includes: acquiring mechanical ventilation parameters; determining that the ventilator is operating in a target ventilation mode based on the mechanical ventilation parameters, performing leak detection on the ventilator, and obtaining a leak detection result; when the leak detection result indicates that mechanical ventilation is normal, performing oxygenation management on the target subject, and obtaining an oxygenation management result; when the oxygenation management result indicates that blood oxygen saturation reaches a preset oxygenation threshold, performing pH testing on the target subject, and obtaining a pH testing result; when the pH testing result indicates that the pH is within a preset pH testing range, maintaining continuous operation of the ventilator in the target ventilation mode. This invention simplifies complex adjustment processes through algorithmic control, reduces repetitive work, lowers the professional requirements for operators, and thus improves adjustment efficiency.

This application relates to a contactless atrial fibrillation identification and multi-physiological indicator monitoring system and method based on deep learning. The system includes: extracting pulse wave signals from a user's facial video; extracting facial temporal feature sequences from the user's facial video; assigning attention weights to the pulse wave signals and the facial temporal feature sequences and performing weighted processing; and predicting the probability of atrial fibrillation, heart rate zone, blood oxygen saturation level, and blood pressure level based on the weighted pulse wave signals and facial temporal features. This solution can effectively improve the robustness and accuracy of atrial fibrillation detection, while simultaneously monitoring multiple physiological indicators of the user.

The application discloses a kind of shallow shale gas preservation condition microcosmic evaluation method, the method obtains blocky rock sample from study target layer, and carries out equal division, and is prepared into the sample of different water saturation;Through the results of several groups of different temperature and saturation conditions under the methane high-pressure adsorption experiment, and interpolation, the methane theoretical maximum adsorption amount under the condition of any formation temperature, water saturation and pressure can be obtained.Then compare with the gas content of present target layer, finally evaluate the preservation condition of the target reservoir on site.The application has a positive effect on shale gas production planning and reservoir evaluation.

Light reflected from a pregnant woman's abdomen and fetus contained therein that has been received by a detector and converted into a reflected electronic signal may be received by a processor. A portion of the reflected electronic signal that is reflected from the fetus may be isolated and the isolated portion of the reflected electronic signal may be analyzed to determine a fetal hemoglobin oxygen saturation level of the fetus. The isolation may be achieved by synchronizing the reflected electronic signal with a fetal heartbeat signal and multiplying the synchronized reflected electronic signal by the synchronized fetal heartbeat signal.

The utility model belongs to sensor protection technical field, concretely is a kind of oxygen saturation sensor protection device, including protection box, the upper end of protection box is provided with first protective cover, the rear side of first protective cover is rotatably connected with protection box by hinge, first buckle mechanism is arranged between the front side of first protective cover and protection box, the protection box, first protective cover and second protective cover of the application are fixed on the outside of plug, and protection box, first protective cover and second protective cover are all used plastic material, and the compression resistance is stronger, has better protective effect, when the oxygen saturation sensor of this blood is not needed to use, it can be directly stored to the inside of protection box, avoid damage, prolong service life.

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.

This invention provides an interventional guidewire device for measuring intravascular oxygen saturation, belonging to the field of interventional surgical medical device technology. The guidewire device includes a guidewire body, a first oxygen measurement unit, and a second oxygen measurement unit. The guidewire body has a filamentous structure with a distal end and a proximal end. The first oxygen measurement unit is positioned at a predetermined distance from the distal end of the guidewire body and is used to measure oxygenation data at the distal end of the thrombus. The second oxygen measurement unit is positioned proximal to the first oxygen measurement unit and spaced at a predetermined distance from it, and is used to measure oxygenation data at the proximal end of the thrombus. During operation, the distal end of the guidewire body passes through the thrombus, with the first oxygen measurement unit positioned at the distal end of the thrombus and the second oxygen measurement unit positioned at the proximal end of the thrombus to measure oxygenation data at both ends of the thrombus. This invention primarily addresses the technical problem in existing technologies where it is impossible to assess oxygenation levels at the proximal and posterior ends of the thrombus before mechanical thrombectomy.

This invention provides a multi-dimensional monitoring and assessment method for sleep disorders at high altitudes, comprising: S1, concurrently collecting respiratory signals, blood oxygen saturation and pulse wave (PPG), heart rate / ECG, body movement and position, and environmental parameters such as altitude / air pressure and temperature and humidity during nighttime sleep; S3, performing sleep / wake discrimination and detecting apnea, hypoventilation, and blood oxygen desaturation events based on structured data, and statistically analyzing event metrics; S4, calculating the frequency domain characteristics of heart rate variability (HRV) from RR interval sequences to obtain a sympathetic nerve activity proxy index; S5, weightedly fusing the event metrics, oxygenation metrics, and sympathetic proxy into a comprehensive score R and performing hierarchical interpretation; S6, fitting an individualized risk trajectory model to the cross-night scoring sequence and outputting short-term predictions. This method enables the construction of individualized adaptation trajectories and short-term prediction models in a real-world high-altitude environment, shifting from "static results" to "process evaluation."

The utility model discloses belong to the blood oxygen saturation sensor technical field, concretely is an improved pulse blood oxygen saturation sensor, including saturation sensor body, the saturation sensor body includes two transmitting light sources and photoelectric detector, the saturation sensor body bottom is set with first annular groove and second annular groove, the first annular groove is installed with rubber ring, the second annular groove is installed with heating ring, through the magic tape, through -hole and rubber ring that set up on the fixing band, can improve the stability of saturation sensor wearing, and improve the comfort degree when wearing, and the user can adjust the tightness of wearing according to own condition through the magic tape that set up on the fixing band, will not cause the saturation sensor wearing too tight or too loose, through the through -hole can with the skin of user's medical adhesive tape is bonded, further improve the stability of saturation sensor wearing, to guarantee the accuracy of data when detecting.

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.

This invention discloses a multi-channel PPG wide-range blood oxygen saturation estimation method for high-altitude environments, belonging to the technical field of physiological signal processing and dynamic blood oxygen monitoring. The method first acquires multi-channel PPG signals and reference measurements, and obtains standardized data through preprocessing such as time alignment, invalid data removal, and noise suppression. Then, it constructs an estimation model containing a quality-aware feature extraction module, an attention-based cross-site fusion module, and a regression head. Reliability masks are generated through multi-scale convolution to optimize feature quality, and multi-head self-attention is used to fuse features from multiple sites. Training employs a composite loss function combining MSE and PCC to iteratively optimize parameters. This invention can accurately handle PPG signal noise interference in high-altitude environments, achieving accurate and continuous estimation of blood oxygen saturation over a wide range of 70%-100%, making it suitable for high-altitude hypoxia monitoring scenarios and highly practical.

This invention discloses an intelligent fall monitoring device, belonging to the field of fall monitoring technology, aiming to solve the problem of accuracy in fall monitoring and prediction for the elderly. It employs a collaborative artificial intelligence model architecture, integrating two different-dimensional artificial intelligence models for risk assessment. Model AI1, based on fuzzy logic, classifies fall risk levels into five levels: normal, low, medium, high, and emergency by real-time monitoring of vital signs such as heart rate, blood pressure, and blood oxygen saturation. Model AI2, based on deep belief networks, predicts risk by analyzing daily living activity patterns such as sitting, standing, walking, running, and jumping. The prediction results of the two models are input into a meta-model for comprehensive decision-making, generating the final low, medium, and high risk level prediction. For real-time fall monitoring, this invention proposes a hybrid monitoring algorithm, combining rule-based triggering based on acceleration and posture angle thresholds with AI fine-grained classification to achieve low latency and high accuracy.

A non-contact blood oxygen saturation measurement device and a non-contact blood oxygen saturation measurement and correction method. The measurement device includes a camera and a processor. The camera includes a first light sensing module and a second light sensing module. The first light sensing module is used to capture ambient light parameters, and the second light sensing module is used to capture target images. The processor is used to perform the following steps: obtaining a color corrected image according to the target image and the ambient light parameters; detecting a region of interest in the color corrected image; obtaining a first color light change signal, a second color light change signal and a third color light change signal of a plurality of different color lights according to the region of interest; obtaining a light ratio parameter according to the first color light change signal, the second color light change signal and the third color light change signal; and obtaining a blood oxygen saturation according to the light ratio parameter.

The present invention provides an image processing device, an endoscope system, an image processing method, and a program that enable oxygen saturation imaging with correction for in-plane unevenness caused by imaging system factors in endoscopes. [Solution] The image processing device according to this disclosure acquires a first spectral image obtained by imaging a living organism irradiated with a first light using an endoscope, acquires a second spectral image obtained by imaging a living organism irradiated with a second light having a different wavelength band from the first light using an endoscope, corrects the brightness distribution of the first spectral image with first correction data stored in advance in association with the endoscope, outputs an image showing the distribution of oxygen saturation of blood in the living organism from the corrected first spectral image and the second spectral image, and calculates the first correction data using a first reference spectral image obtained by imaging a reference region with a known brightness distribution using an endoscope and the brightness distribution of the reference region.

A process (200) for the determination of 2-phase and 3-phase saturations using oxygen count rates obtained using a downhole tool (102). A 2-phase saturation measurement of gas and wet (oil-water) separation may be determined (210) using short space (SS) and long space (LS) oxygen count ratio and porosity. A 2-phase saturation measurement of oil and water-gas separation may be determined (214) using a normalized short space (SS) or long space (LS) oxygen count rate, and a short space (SS) and long space (LS) oxygen count ratio. The 2-phase saturation determinations may be combined to determine (216) a 3-phase determination.

The application relates to a handheld negative ion generating device and a use method, high-concentration negative ions are generated through a photocatalytic reaction, and the human mouth and nose area is accurately guided. After the negative ions enter the human body through the respiratory tract, the combination of hemoglobin and oxygen can be effectively promoted, the blood oxygen saturation is improved, pure oxygen inhalation is not required, and side effects such as oxygen poisoning are avoided. The negative ions are generated through a photocatalytic reaction, there are no harmful by-products such as ozone, the device is more energy-saving and environment-friendly, and the negative ion release is stable and efficient. The overall structure of the device is compact, handheld and portable, can be flexibly adapted to home daily conditioning, outdoor activities, high-altitude hypoxic environments and the like, and the problem that large blood oxygen improvement equipment is limited in use is solved. The device has negative ion intensity and airflow velocity adjusting functions and is convenient to operate; the device is also integrated with oxygen generation functions and meets hypoxic demands in different degrees. The application has the advantages of high safety, comfortable use, long-lasting endurance and the like and is suitable for daily conditioning and emergency hypoxic use of people with low blood oxygen saturation.

The utility model relates to medical instrument technical field discloses a can connect external equipment's end carbon dioxide monitor, including organism, the bottom fixed connection of organism has foot pad, one side of organism is provided with power source interface and switch, the top of organism is provided with oxygen saturation probe socket and sampling gas entrance, the outer wall of organism is provided with limit component, the outer wall of organism is provided with clamping component and mounting plate, limit component includes side wing, the outer wall of side wing is fixedly connected with the outer wall of organism, the inside of side wing is opened and has movable mouth. The utility model discloses through placing cell -phone between two limit components, rotates the knob one of respective again, and knob one rotation drives the rotation of one -way screw rod, and one -way screw rod rotation drives the limit plate one and limit plate two to carry out the clamping limit of cell -phone through the thread cover one, thereby reaches the effect that prevents cell -phone accidental falling.

The application discloses a full-spectrum analysis method for monitoring blood oxygen saturation and hematocrit in an extracorporeal circulation pipeline, and comprises the following steps: step 1, constructing a photoelectric acquisition device; step 2, performing system initialization calibration; acquiring CMOS image sensor data, photodiode sensor dark current calibration data and empty pipeline reference data; step 3, using a main control unit to control a mixed light source module and a mixed sensor module to perform time sequence synchronous acquisition; acquiring a transmission image of a visible light band and a transmission light intensity voltage of an infrared band at a fixed frame rate; step 4, pre-processing the acquired transmission image data and transmission light intensity voltage data to generate an optical characteristic map reflecting the pipeline and an optical density vector reflecting absolute light absorption; and step 5, inputting the pre-processed optical characteristic map and optical density vector into a pre-trained double-flow deep neural network model to obtain quantitative values of blood oxygen saturation and hematocrit of liquid in the pipeline.

This invention discloses an apparatus for measuring oxygen saturation. The apparatus includes a circuit system configured to: measure a first diode voltage at a light-emitting diode (LED) when a first current is applied through the LED; measure a second diode voltage at the LED when a second current is applied through the LED; and measure a third diode voltage at the LED when a third current is applied through the LED. The circuit system is further configured to: determine a series resistance based on the first, second, and third diode voltages; and determine the intensity of a received photon signal corresponding to an output photon signal generated using the LED. The circuit system is further configured to determine the oxygen saturation level based on the intensity of the received photon signal and the series resistance.

Disclosed is an apparatus (100) for determining oxygen saturation with skin tone correction. The apparatus includes first (102) and second (104) probes adapted to be disposed on a body portion (106) having first through third absorbers, and configured to emit and detect light signals corresponding to a set of wavelengths. The apparatus further includes processing circuitry (116) coupled to the probes and configured to: determine reflectance and transmittance values based on the detected light signals; determine and rescale first and second sets of absorbance values corresponding to the reflectance and transmittance values; determine first through third coefficients of the first through third absorbers; and determine an oxygen saturation value based on the first and second coefficients such that the oxygen saturation value is corrected for skin and tissue absorption.

This invention belongs to the field of health monitoring technology, specifically relating to a method and device for monitoring physiological parameters. The method includes: acquiring a user's photoelectric pulse wave signal, electrocardiogram (ECG) signal, and triaxial acceleration signal; filtering and denoising the photoelectric pulse wave signal and ECG signal based on the triaxial acceleration signal to obtain clean photoelectric pulse wave and ECG signals; processing the clean photoelectric pulse wave signal using a differential thresholding method to obtain heart rate; processing the clean ECG signal using an envelope fitting method to obtain blood oxygen saturation; extracting pulse features from the clean photoelectric pulse wave signal; and inputting the pulse features into a multivariate feature parameter regression model for processing to obtain blood pressure. This invention achieves highly stable monitoring in alternating motion and rest scenarios, taking into account both active and static scenarios, and significantly improves the accuracy and device adaptability of real-time physiological parameter monitoring.

The application discloses an adjustable low-oxygen, constant-temperature and constant-humidity training room and relates to the technical field of training room control, which comprises an identity recognition module, an environment initialization module, a physiological monitoring module, a data analysis module, a training load adjustment module and a report generation module; the identity recognition module is used for setting target oxygen concentration, target temperature and target humidity as initial environment control parameters according to the training target type selected by a user on a man-machine interface and preset environment parameter templates, so as to exert specific low-oxygen, constant-temperature and constant-humidity combined training load on the user; the environment initialization module is used for calculating and setting initial oxygen concentration, temperature and humidity parameters according to the training target selected by the user on the man-machine interface and historical data; the physiological monitoring module is used for collecting physiological parameters of the heart rate, blood oxygen saturation, breathing frequency and muscle fatigue degree of the athlete and transmitting the data to the data analysis module for processing; and the data analysis module is used for receiving data from the physiological monitoring module.

The application discloses a data processing method, a data processing device, an electronic equipment and a readable storage medium, and belongs to the technical field of blood oxygen detection. The data processing method comprises the following steps: acquiring a health parameter, wherein the health parameter comprises a photoelectric plethysmogram signal; determining a green light amplitude spectrum, a red light amplitude spectrum and an infrared light amplitude spectrum according to the photoelectric plethysmogram signal; determining a human pulse frequency according to the green light amplitude spectrum; determining a first parameter according to the red light amplitude spectrum and the human pulse frequency, and determining a second parameter according to the infrared light amplitude spectrum and the human pulse frequency; and determining a blood oxygen saturation degree according to the first parameter and the second parameter.

This invention belongs to the field of petroleum development technology, specifically relating to a method for evaluating water-lock damage in tight sandstone. The method includes the following steps: after cleaning and drying, the core sample absorbs formation water under vacuum using capillary self-absorption; a first-stage water saturation gradient is established by increasing the vacuum level and / or absorption time; after completion, the core sample absorbs formation water under pressure; a second-stage water saturation gradient is established by increasing the pressure and / or pressure application time; and the gas phase permeability K at different water saturations is calculated. i The degree of waterlock damage is determined based on the rate of change of gas phase permeability. Through the experimental process of gradually increasing water saturation in the core, a full range of water saturation from 0% to 100% can be quickly and accurately established, which conforms to the production pattern of normal gas reservoirs. Moreover, no drying step is required, avoiding salt precipitation, and the degree of waterlock damage at different water saturation levels can be accurately evaluated.

The present application relates to the technical field of stress evaluation, and in particular to a stress evaluation method and system based on active physical interaction, which comprises: obtaining passive physiological data, the passive physiological data comprising at least one of HRV data, EDA data, PPG data, blood pressure data, blood oxygen saturation data and sleep quality data; calculating a physiological load level according to the passive physiological data; updating a physiological load baseline according to scenario data; the physiological load baseline being a dynamic threshold for judging whether the stress level is abnormal, which changes with the scenario in which the user is located; and comprehensively determining the stress level of the user according to the physiological load baseline and the physiological load level. The present application can greatly improve the accuracy of stress evaluation of a user by a wearable device, reduce the misjudgment rate and improve the user experience.