38 results about "Pulse oximetry" patented technology

Existing pulse oximeters have impaired accuracy in measuring blood oxygen levels (SpO2) in patients of color, where the presence of melanin in the skin tends to interfere with measurements of pulse oximetry, resulting in an overestimation of SpO2. Thus, the pulse oximeter often reports a higher oxygen saturation for patients with darker skin tones, often with increasing bias as the actual saturation (SaO2) decreases. This bias is further reinforced by calibration based on individuals with light skin pigmentation, which may lead to inequitable healthcare for patients of color. Our proposed solution is to modify current pulse oximetry calculations—which utilize the relative tissue absorbance of red and infrared light to estimate SpO2—to account for the concentration of melanin by additionally measuring the skin absorbance of UV˜A light. This derived concentration of melanin can then be used to modify the pulse oximetry algorithm output, thus estimating SpO2 more accurately for patients of color.

1. The name of the design product: palm type pulse oximeter. 2. The use of the design product: for measuring the blood oxygen value of human body. 3. The design points of the design product: in the combination of shape, pattern and color. 4. The picture or photo that best shows the design points: front view. 5. The design claimed contains color.

The present specification describes a system and method of detecting sleep disordered breathing, that includes acquiring a set of unconditioned sleep test data that includes oximetry data and at least one other physiological sensor data; sampling the set of unconditioned sleep test data; storing the sampled set of unconditioned sleep test data; receiving, through a display, an input indicative of a degree of analyzing to be applied to the sampled set of unconditioned sleep test data; based on said input, applying a corresponding degree of analyzing to the unprocessed sleep test data to generate processed sleep test data; and visually displaying the processed sleep test data.

A body-worn patch sensor for simultaneously measuring a blood pressure (BP), pulse oximetry (SpO2), and other vital signs and hemodynamic parameters from a patient featuring a sensing portion having a flexible housing that is worn entirely on the patient's chest and encloses a battery, wireless transmitter, and all the sensor's sensing and electronic components. It measures electrocardiogram (ECG), impedance plethysmogram (IPG), photoplethysmogram (PPG), and phonocardiogram (PCG) waveforms, and collectively processes these to determine the vital signs and hemodynamic parameters. The sensor that measures PPG waveforms also includes a heating element to increase perfusion of tissue on the chest.

The invention provides a pulse oxyhemoglobin saturation detection method and system, and the method comprises the steps: receiving an optical signal transmitted to the surface of a light receiving tube through the light receiving tube when the light receiving tube generates red light, converting the optical signal into a first receiving electric signal, and forming a red light sampling channel; when a light receiving tube generates the infrared light, receiving a light signal emitted to the surface of the light receiving tube and converting the light signal into a second receiving electric signal to form an infrared light sampling channel; detecting the first receiving electric signal in real time, identifying the driving output change of the red light emitting tube, and outputting a first signal status bit; the change of the detection rate of the pulse wave is judged based on the signal status bit, and when the detection rate of the pulse wave is increased, the output blood oxygen saturation value is calculated according to the first receiving electric signal and the second receiving electric signal. Comprehensive analysis is carried out in time according to the blood oxygen sampling signal and / or the driving current adjusting state so as to judge and determine whether a suspected non-physiological state mark exists or not.

A system and method to help maintain quality control and reduce cannibalization of accessories and attached probes in a highly sensitive patient monitor, such as a pulse oximetry system. One or more attached components may have information elements designed to designate what quality control mechanisms a patient monitor should look to find on that or another component or designate other components with which the one component may properly work. In a further embodiment, such information elements may also include data indicating the appropriate life of the component.

The present invention is an in vivo non-invasive method and apparatus for the measurement of the arterial blood oxygen saturation status of a patient, the method is a generalized improvement on conventional pulse oximetry to correct for its skin pigmentation bias and significant errors in oxygen saturation assessment in the presence of methemoglobin. The method requires an additional red light sensor with an infrared long pass filter to conventional pulse oximetry, and utilizes red and infrared light and sensors to non-invasively measure the peripheral pulse optical plethysmograph waveforms (PPG) at three light wavelengths, red, long pass red and infrared, positioned over a finger, or ear or other extremity, and from the pulse oximetric ratio of ratios transforms the PPG measurements by a processing device that determines the subject's arterial blood oxygen saturation directly, without the need for an empirical correction as is required in conventional pulse oximetry. The method determines the red transmitted light waveform and thus quantifies the wavelength shift from the incident red light due to the subject's skin pigmentation, and from in vivo hemoglobin extinction coefficients, determines the relative concentrations of oxygenated and deoxygenated hemoglobin and methemoglobin in the subject's arterial blood.

The present application relates to the technical field of blood oxygen detection, and more particularly to a pulse blood oxygen saturation detection method based on image processing, which introduces a transfer learning strategy and a domain adaptation network, can be adjusted according to the individual physiological parameters of the user, thereby improving the applicability to different populations. In particular for dark-skinned population, the present application significantly reduces the measurement error, reduces the error rate by more than 30%. The present application designs a set of real-time calculation mechanism of current signal quality index Q, and combines the Bayesian filtering model for dynamic calibration, so as to ensure that reliable blood oxygen saturation estimation value can be obtained even under low signal-to-noise ratio condition. When the signal quality decreases, the historical data is compensated for the current detection value through the LSTM network prediction module, so as to further ensure the accuracy and continuity of the result.

An emergency medical kit may comprise a main body with multiple compartments. A fabric panel may be attached to the main body. The fabric panel may include horizontal and vertical straps forming a grid pattern. The fabric panel may have attachment points for securing medical supplies. A removable medication pack containing pre-selected medications may be included. A removable wound cleaning pack with treatment supplies may also be provided. The kit may further include items like a blood pressure cuff, stethoscope, tourniquet, trauma shears, and pulse oximeter. The fabric panel may have a mesh pocket with a zipper. The main body may open in a T-shaped layout. Elastic bands may secure additional supplies. The grid pattern may comprise a MOLLE system. A medical bag component with a mesh pocket and logo may attach to the main body.

An AI-driven medical intake assistant system includes a computing device having a processor and memory configured to execute an intake module, an abnormality detection module, and an electronic health record (EHR) integration module. The intake module presents a conversational interface that dynamically selects patient intake questions using a rule-based branching decision tree with clinical topic tags and transition rules. One or more connected diagnostic devices automatically capture patient vital sign measurements, including blood pressure, temperature, pulse oximetry, or weight, and transmit the measurements to the computing device. The abnormality detection module compares captured measurements to predefined threshold values or historical baseline data retrieved from the EHR and generates provider-facing alerts when deviation thresholds are exceeded. The EHR integration module maps patient responses and vital sign measurements into predefined structured EHR fields prior to a provider consultation.

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 method for estimating a metabolic rate of a user includes obtaining pulse oximetry data for the user for a period of time. The method includes determining a rate of decline in oxygen saturation of blood of the user that is associated with a breathing rate of the user for the period of time based, at least in part, on the pulse oximetry data. The method includes estimating the metabolic rate of the user for the period of time based, at least in part, on the rate of decline in the oxygen saturation of the blood that is associated with the breathing rate of the user. The method includes providing a notification indicative of the metabolic rate for the period of time.

The utility model discloses an oximeter probe performance testing device in the technical field of oximeters, which comprises a shell, one end of the shell is uniformly and fixedly connected with a plurality of simulation components, the inner wall of the shell is provided with an inner cavity, the inner walls of the two ends of the inner cavity are fixedly connected with liquid storage tanks, and the inner walls of the two liquid storage tanks are provided with liquid storage cavities. The two liquid storage cavities are filled with blood simulation liquid, the inner walls of the two liquid storage cavities are fixedly connected with an oxygenation pump, the end, close to the oxygenation pump, of each liquid storage cavity is fixedly connected with a conveying pump, and the end, close to the conveying pump, of each liquid storage cavity is fixedly connected with an electric heating block. By means of the liquid storage cavity filled with the blood simulation liquid and the skin simulation layer, the real human body environment and the blood oxygen measurement scene can be simulated, and therefore the accuracy and reliability of testing are improved. The oxygen content and the temperature of the blood simulation liquid can be automatically adjusted by utilizing the oxygen increasing pump, the conveying pump, the electric heating block and other components, different physiological states are rapidly simulated, and efficient testing is achieved.

This invention relates to the field of sleep monitoring data fusion processing technology, and discloses a sleep monitoring method based on the fusion of non-invasive brain oxygen saturation (AHI) and multiple physiological parameters. The method includes: S1, simultaneously acquiring multiple physiological parameter signals during the subject's sleep; S2, extracting and analyzing the AHI signal to generate multiple characterization markers; S3, identifying respiratory events related to the subject's apnea information from the respiratory signal and pulse oximetry signal, calculating the apnea-hypopnea index (AHI); and performing correlation analysis on the identified respiratory events and multiple characterization markers to calculate a correlation coefficient; S4, obtaining a comprehensive sleep monitoring assessment report based on the correlation coefficient and the AHI to determine the severity of the subject's current respiratory disturbance and the risk of brain tissue hypoxia. By improving the effectiveness of AHI in non-invasive brain oxygen saturation monitoring, the confirmatory nature of non-invasive brain oxygen saturation information in the respiratory correlation diagnosis during sleep monitoring is ensured.

The utility model provides a kind of monitor capable of displaying pulse breath ratio parameter, including monitor body, still including respiratory data acquisition unit and pulse measurement unit, both are connected with control unit, control unit is connected with display unit in monitor body;Respiratory data acquisition unit is configured to collect the respiratory data of patient, and it is transmitted to control unit after being converted into digital signal, control unit can obtain the respiratory frequency of patient per minute;Pulse measurement unit is configured to be able to collect the pressure signal of patient when measuring pulse, and it is transmitted to control unit after being converted into digital signal, control unit can obtain the pulse number of patient per minute according to pressure signal;Control unit divides the ratio of pulse number per minute by respiratory frequency per minute and transmits to display unit to show, the ratio of pulse number per minute by respiratory frequency per minute is pulse breath ratio parameter. The above-mentioned monitor can display pulse breath ratio parameter on monitor display interface.

Existing pulse oximeters have impaired accuracy in measuring blood oxygen levels (SpO2) in patients of color, where the presence of melanin in the skin tends to interfere with measurements of pulse oximetry, resulting in an overestimation of SpO2. Thus, the pulse oximeter often reports a higher oxygen saturation for patients with darker skin tones, often with increasing bias as the actual saturation (SaO2) decreases. This bias is further reinforced by calibration based on individuals with light skin pigmentation, which may lead to inequitable healthcare for patients of color. Our proposed solution is to modify current pulse oximetry calculations - which utilize the relative tissue absorbance of red and infrared light to estimate SpO2 - to account for the concentration of melanin by additionally measuring the skin absorbance of UV~A light. This derived concentration of melanin can then be used to modify the pulse oximetry algorithm output, thus estimating SpO2 more accurately for patients of color.

An Adaptive Neuro-Fuzzy Inference System (ANFIS) for total intravenous anesthesia management is disclosed, enabling control over administration of anesthetic agents and dynamic adjustment according to patient physiological feedback. The system processes patient data, including processed EEG signals, hemodynamic information, capnography, and pulse oximetry, to facilitate real-time anesthetic dosage adjustments.

Embodiments relate generally to a method of determining oxyhemoglobin saturation comprising: receiving, at a computing device, a first bioimpedance (BImp) measurement signal of a patient having a first frequency and a second bioimpedance measurement signal of the patient having a second frequency different from the first frequency; wherein for each of the first BImp measurement signal and the second BImp measurement signal, an arterial pulse wave is included, the arterial pulse wave representing a change in impedance over time through an artery of the patient; filtering each of the first BImp measurement signal and the second BImp measurement signal; performing feature point extraction on the first filtered BImp measurement signal and the second filtered BImp measurement signal to generate a plurality of arterial pulse wave features; determining, for each of the first BImp measurement signal and the second BImp measurement signal, phase shift information based on the plurality of arterial pulse wave characteristics; and determining a blood oxygen level and a saturation percentage of the patient based on the determined phase shift information.

A pulse oximeter and method of calculating blood oxygen saturation that enables increased accuracy when signal levels and / or quality are low, as well as across a range of skin tones. Increased accuracy is enabled by detecting red and IR LED signals using both transmissive and reflective light detectors. In addition, several criteria are used to evaluate whether the detected transmissive or reflective signal provides a more accurate blood oxygen saturation value.

The present invention is an in vivo non-invasive method and apparatus for the measurement of the arterial blood oxygen saturation status of a patient, the method is a generalized improvement on conventional pulse oximetry to correct for its skin pigmentation bias and significant errors in oxygen saturation assessment in the presence of methemoglobin. The method requires an additional red light sensor with an infrared long pass filter to conventional pulse oximetry, and utilizes red and infrared light and sensors to non-invasively measure the peripheral pulse optical plethysmograph waveforms (PPG) at three light wavelengths, red, long pass red and infrared, positioned over a finger, or ear or other extremity, and from the pulse oximetric ratio of ratios transforms the PPG measurements by a processing device that determines the subject's arterial blood oxygen saturation directly, without the need for an empirical correction as is required in conventional pulse oximetry. The method determines the red transmitted light waveform and thus quantifies the wavelength shift from the incident red light due to the subject's skin pigmentation, and from in vivo hemoglobin extinction coefficients, determines the relative concentrations of oxygenated and deoxygenated hemoglobin and methemoglobin in the subject's arterial blood.

A system for optically measuring vital parameters, in particular by means of the pulse oximetry method, is disclosed. The system (1) comprises a controller (4) configured to control one or more transmitters of light (2a, 2b, 2c) depending on a control signal from a signal processor (7) in such a way that the signal quality of an incoming signal is maximal, and the controller (4) is furthermore configured to select a wavelength range of the one or more transmitters of light (2a, 2b, 2c) on the basis of context information, the context information being selected from the group comprising movement information, location information, time information, light intensity information.

A device that may include, or communicate with, sensors such as an electrocardiogram (ECG) sensor, an accelerometer, and / or a photoplethysmograph (PPG) detects sleep-disordered breathing (SDB) events of a patient based on signals from the sensors. The device may have a processor configured to make the detection(s). In an example, the processor may access a memory with processor control instructions. The instructions may be adapted to configure the processor to carry out the detection methodology. The method may include analysing an ECG data of the patient from a signal generated by the ECG sensor, pulse oximetry data of the patient from a signal generated by the PPG, and a three-dimensional (3D) accelerometry data of the patient from a signal generated by the accelerometer to detect the SDB events. The device and methods may be used for screening, diagnosis and monitoring of respiratory disorders.

1. The name of the design product: palm type pulse oximeter. 2. The use of the design product: for measuring the blood oxygen value of human body. 3. The design points of the design product: in the combination of shape, pattern and color. 4. The picture or photo that best shows the design points: front view. 5. The design claimed contains color.

The present disclosure relates to a pulse oximetry method in which the contribution of venous capillaries to photoplethysmogram is reduced below 25%.

A device may identify a peak timestamp and a trough timestamp based on a first principal component of photoplethysmography (PPG) data associated with a plurality of wavelength channels. The device may generate a peak absorption spectrum based on the peak timestamp and the PPG data, and may generate a trough absorption spectrum based on the trough timestamp and the PPG data. The device may determine a measured arterial blood spectrum based on the peak absorption spectrum and the trough absorption spectrum. The device may fit the arterial blood spectrum model to the measured arterial blood spectrum to determine a set of values, each value in the set of values corresponding to a variable in a set of variables. The device may calculate an arterial oxygen saturation value based on one or more values of the set of values.

This utility model discloses a pulse oximetry sensor, specifically an adjustable disposable pulse oximetry sensor. It includes a sensor body with a connecting wire and a plug. The sensor body has a movable slot containing an adjustment component. The adjustment component includes a moving block with positioning wings on both sides and a storage slot on top. A push-pull rod is rotatably connected to the storage slot. A positioning strip is located on one side of the moving block, and a PD chip is installed at the bottom. The PD chip's position can be flexibly adjusted via the movable block within the movable slot. When adjustment is needed, pushing or pulling the push-pull rod moves the moving block within the movable slot, allowing the PD chip to be adjusted to the desired position. This significantly improves practicality compared to existing technologies.

The finger clamping type pulse oximeter capable of being adjusted by one hand comprises a bottom plate and an oximeter body, a positioning mechanism used for placing the oximeter body is arranged in the middle of the top face of the bottom plate, and a pressing mechanism used for opening the oximeter body is arranged on one side of the positioning mechanism; the arm of a patient is controlled to press the pressing plate, so that the two pull rods are pulled to move downwards at the same time, the clamping groove is matched with the pressing rod to extrude the position, away from the opening, of the oximeter body, the oximeter body is opened, the palm of the patient is stretched, the fingers enter the opening of the oximeter body, the arm of the patient is lifted in time, and the patient feels comfortable. At the moment, the pressing rod does not press the position, away from the opening, of the oximeter body, so that the oximeter body clamps the fingers of the patient to measure the oxyhemoglobin saturation, a simple operation mode is provided for the patient with unilateral arm fracture or nervous system diseases, assistance of medical staff is avoided, and the efficiency of diagnosing the oxyhemoglobin saturation of the patient is improved.

A connector may include a first housing configured to detachably secure a first input cable of a first sensor configured to generate a first signal, and a second housing configured to detachably secure a second input cable of a second sensor configured to generate a second signal. The second housing may be configured to transmit the second signal from the second input cable to the first housing. The first housing may be configured to transmit at least one of the first signal and the second signal to an output cable. A coupling of the first housing may be configured to mate with a coupling of the second housing such that the first housing and the second housing are configured to be detachably secured to each other. The coupling may be mechanical, electro-mechanical, or magnetic. Either sensor may be an electrocardiogram sensor or a pulse oximetry sensor.

The application provides a pulse blood oxygen saturation detection method and system, which comprises the following steps: receiving the light signal emitted to the surface of the light receiving tube and converting it into a first received electric signal to form a red light sampling channel when the red light is generated; receiving the light signal emitted to the surface of the light receiving tube and converting it into a second received electric signal to form an infrared light sampling channel when the infrared light is generated; detecting the first received electric signal in real time, identifying the driving output change of the red light emitting tube, and outputting a first signal state bit; judging the change of the detection rate of the pulse wave based on the signal state bit, when the detection rate of the pulse wave rises, calculating the output blood oxygen saturation value according to the first received electric signal and the second received electric signal. According to the comprehensive analysis of the blood oxygen sampling signal and / or the state of the driving current adjustment state in time, whether there is a suspected non-physiological state marker is determined.