22 results about "Arterial oxygen" patented technology

The embodiment of the invention provides a continuous blood oxygen monitoring system in extracorporeal circulation and a control method thereof. The continuous blood oxygen monitoring system comprises a vein sensor, an artery sensor, a blood flow sensor, an oxygen sensor, a carbon dioxide sensor, a controller and a display, the vein sensor monitors the vein blood oxygen saturation degree; the artery sensor monitors arterial oxygen saturation and hematocrit; the blood flow sensor monitors the blood flow of the artery pipeline; the oxygen sensor monitors the oxygen concentration of the oxygenator; the carbon dioxide sensor monitors the carbon dioxide concentration of the oxygenator; the display provides an interaction control, responds to a trigger operation acting on the interaction control, sends an interaction instruction to the controller, and updates information displayed in an interaction interface according to the control of the controller; the controller receives the interaction instruction and executes processing corresponding to the interaction instruction; the processing includes controlling display information of the display; the display information comprises information corresponding to the monitoring parameters. The scheme ensures the safety and effectiveness of the treatment process.

The invention discloses a vein blood oxygen saturation real-time measurement system and method based on an LED light source. The method comprises the steps that 1, a pulse driving circuit outputs pulse voltage to drive LEDs with different wavelengths in a dual-wavelength LED light source to flicker alternately; collecting a photoacoustic signal by an ultrasonic transducer; 2, the ultrasonic signal processing platform receives the collected sound signals and carries out subsequent processing; 3, controlling the ultrasonic transducer to transmit an ultrasonic signal to the same measured part, and receiving an echo signal of the ultrasonic transducer; reconstructing an ultrasonic image of the measured part based on the echo signal; step 4, in the obtained ultrasonic image, positioning a vein to be analyzed and an adjacent artery thereof, and positioning the vein in the ultrasonic image; 5, the arterial oxygen saturation value of the whole body is measured through a finger clamping type pulse oximeter, and quantitative calculation of the venous oxygen saturation is achieved; and step 6, carrying out pixel-level fusion on the oxyhemoglobin saturation information and the ultrasonic image, and realizing visualization on the same frame of ultrasonic image.

The invention provides a traditional Chinese medicine composition for treating acute altitude sickness. The traditional Chinese medicine composition is prepared from ginseng, astragalus membranaceus, acanthopanax, rhodiola rosea, turnip, salvia miltiorrhiza, dogwood, poria cocos, rhizoma cimicifugae, radix bupleuri, platycodon grandiflorum, aster, elecampane, rhizoma anemarrhenae and liquorice. The traditional Chinese medicine composition disclosed by the invention can be used for treating the acute altitude sickness, remarkably prolonging the load-bearing swimming time of rats, remarkably increasing the arterial oxygen partial pressure and the arterial oxygen saturation of acute altitude sickness model rats and relieving physical fatigue, has obvious effects of resisting anoxia, improving acid-base balance and resisting inflammation, and has obvious curative effects on myocardial injury, liver injury, liver injury and the like. And the kidney injury can be protected.

A pulse oximeter includes a light emitting device that emits a first light and a second light, a light detecting device that outputs a first signal and a second signal respectively corresponding to an intensity of the first light and an intensity of the second light after interacting with a tissue of a subject, a processing device that calculates a pulsation rate of at least one of the first signal and the second signal, calculates a percutaneous arterial oxygen saturation of the subject, and estimates a capillary refill time of the tissue based on a time taken for at least one of the pulsation rate and the percutaneous arterial oxygen saturation, which change along with compression on the tissue, to return to a predetermined threshold range with respect to each value before the compression, and an output device that outputs information indicating the capillary refill time.

Systems and methods are described for assessing arterial blood oxygen saturation concurrently with performing continuous blood pressure monitoring via a volume clip approach. Generally, the cuff system may be configured to fit to a body appendage. The cuff system may include a pressurizable balloon and a photoplethysmograph. The method may perform arterial blood oxygen saturation when the artery of the body appendage is in an unloaded state. Small fluctuations in the plethysmogram signal may be used with the calculated calibration factor to calculate arterial blood oxygen saturation.

The invention relates to a computer implemented method, and a data processing system, for providing decision support in relation to a patient receiving oxygen treatment, the patient having a medical condition requiring a supplemental oxygen device providing an oxygen flow, wherein the decision support assists a health care person in adjusting the oxygen flow from said supplemental oxygen device to the patient, and wherein the decision support uses an arterial oxygenation value to calculate whether the oxygen flow to the patient is sufficient based on a desired input from the health care person.

The utility model discloses an intraoperative acra protective sleeve convenient to observe, which relates to the technical field of medical instruments and comprises a main protective sleeve body, and an arm opening, a wrist opening and a hand opening are arranged on the main protective sleeve body. The arm opening, the wrist opening and the hand opening of the sleeve body of the main protective sleeve are all provided with opening uncovering cloth capable of being opened and closed, and the opening uncovering cloth is made of transparent materials. The arm opening, the wrist opening and the hand opening are formed in the sleeve body of the main protective sleeve, and the opening uncovering cloth made of the transparent material is arranged to shield the openings, so that the venous transfusion condition, the artery condition and the blood oxygen condition of each part of a limb can be conveniently observed through the opening uncovering cloth made of the transparent material during use; therefore, the use effect of the device is effectively improved, and the practicability of the device is enhanced.

A regional oximetry system has a display and at least one processor causing a plurality of views to be displayed on the display, each configured to occupy at least a portion of the display. The views are adapted to present data responsive to at least one physiological signal. A first sensor port is configured to receive at least a first physiological signal representative of a regional tissue oxygenation level, and a second sensor port is configured to receive at least a second physiological signal representative of an arterial oxygen saturation level. One view presents a first trend graph of the first physiological signal and a second trend graph of the second physiological signal. An area between the first trend graph and the second trend graph can include a differential analysis of regional-to-central oxygen saturation.

A non-invasive wearable system and method for detecting bubbles in a bloodstream and / or tissue and in one example to a non-invasive wearable system and method thereof for detecting bubbles in a bloodstream to monitor and detect decompression sickness (DCS). A processing subsystem is configured to calculate arterial oxygen saturation (SaO2) from the first PPG waveforms and calculate venous oxygen saturation (SvO2) from the second PPG waveforms and detect changes in the SaO2 and the SvO2 to detect the presence of gas bubbles in at least one of the blood stream or the tissue of the human subject.

A non-invasive, optical-based physiological monitoring system is disclosed. One embodiment includes an emitter configured to emit light. A diffuser is configured to receive and spread the emitted light, and to emit the spread light at a tissue measurement site. The system further includes a concentrator configured to receive the spread light after it has been attenuated by or reflected from the tissue measurement site. The concentrator is also configured to collect and concentrate the received light and to emit the concentrated light to a detector. The detector is configured to detect the concentrated light and to transmit a signal representative of the detected light. A processor is configured to receive the transmitted signal and to determine a physiological parameter, such as, for example, arterial oxygen saturation, in the tissue measurement site.

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 calculating cardiac output of a patient on an extracorporeal blood oxygenation circuit includes measuring first oxygenated blood flow rate by a pump in the extracorporeal circuit and a corresponding arterial oxygen saturation and recirculation in the extracorporeal circuit, then changing the pump flow rate, such as decreased, to produce a corresponding change in arterial oxygen saturation (wherein such change is outside of normal operating variances or drift), which change in the arterial oxygen saturation and recirculation are measured. From the first flow rate and the second flow rate along with the corresponding measured recirculation and the arterial oxygen saturation, the CO of the patient can be calculated, without reliance upon a measure of venous oxygen saturation. The system also includes an accommodation of oxygenation by the lungs of the patient during the extracorporeal blood oxygenation.

The present specification discloses a method for measuring brain tissue oxygenation in a subject. The method comprises the following steps: measuring a magnetic signal in a reference voxel of the subject's brain while imposing a series of arterial oxygen saturation changes using sequential gas delivery; calculating a relationship between the magnetic signal and the arterial oxygen saturation in the reference voxel; measuring a magnetic signal in a target voxel; and calculating the hemoglobin saturation in the target voxel based on the established relationship between the magnetic signal and the SaO2 in the reference voxel. This calibration of magnetic signal for SaO2 enables the conversion of magnetic signal to SaO2 throughout blood-containing voxels throughout the brain.

Methods and systems are provided for calibrating oxygen sensitive imaging techniques and improving accuracy of blood oxygen level measurement therewith, such as via blood oxygen level dependent MRI. In various embodiments, the methods include concurrently or simultaneously acquiring a plurality of T2 or T2* MR images in a pre-determined breathing pattern and measuring corresponding percutaneous O2 saturation level or end-tidal O2 partial pressure. The breathing pattern effectuates a varying degree of arterial oxygen saturation level. With the acquired T2 or T2* data and the percutaneous O2 saturation level or the end-tidal O2 partial pressure, one can solve for fixed parameters in the Luz-Meiboom (L-M) model for MR oximetry, thereby calibrating these parameters for a target individual, a target organ, or a target MR imaging sequence.

The invention discloses a sleep real-time monitoring health intelligent bracelet, which comprises a monitoring system, and the monitoring system comprises a piezoelectric conversion module, an amplification module, a filter, a circuit board, a detection module, a positioning module, a voice module, a terminal, an alarm module, a display screen and a control panel. The display screen, the control panel, the detection module, the positioning module and the voice module are all connected with the circuit board, and the detection module, the alarm module and the positioning module are all connected with the terminal; the terminal comprises a mobile phone, a tablet computer and an iPad; the data detected by the detection module comprises blood pressure, heart rate, breath, non-autonomous leg movement and arterial blood oxygen; the sleep monitoring device has the advantages that the blood pressure, the heart rate, respiration, non-autonomous leg movement and arterial blood oxygen data are detected, whether a snorer has apnea or not, the apnea frequency, the apnea time, the lowest arterial blood oxygen value when apnea occurs and the change of the whole period can be fully known, and the sleep period can be known through sleep monitoring.

This invention discloses the application of tyrosol in enhancing oxygen supply and thus improving energy supply, such as combating fatigue and improving athletic and / or cognitive performance. Enhancing oxygen supply includes increasing arterial blood oxygen saturation and / or muscle tissue oxygen saturation. Combating fatigue includes enhancing physical endurance and metabolism, reducing physical and mental fatigue, prolonging muscle and nerve working time, and / or maintaining muscle and nerve efficiency. Improving athletic performance includes enhancing the body's aerobic metabolic capacity, reducing lactic acid buildup, reducing post-exercise muscle soreness, and improving recovery speed. Improving cognitive performance includes reducing depression and anxiety; enhancing learning ability, memory, concentration, focus, reaction time, and alertness, especially in hypoxic environments and / or during exercise. Tyrosol enhances oxygen supply, thereby combating fatigue and improving athletic and cognitive performance.

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 makes it possible to understand the relationship between blood oxygen saturation and arterial oxygen partial pressure for each individual. [Solution] The input interface 111 receives first data D1 corresponding to the measured values ​​of arterial blood oxygen partial pressure and arterial blood oxygen saturation of the subject 20, and at least one of second data D2 corresponding to at least one of the subject 20's arterial blood carbon dioxide partial pressure, arterial blood pH, body temperature, and 2,3-DPG concentration in the blood. The processor 112 determines a rule for converting the values ​​of arterial blood oxygen partial pressure and arterial blood oxygen saturation of the subject 20 to each other based on at least one of the first data D1 and second data D2, and visualizes the rule on the visualization device 12.

Techniques and apparatuses are described for determining an estimated cardiac output of a patient during a dialysis treatment. In one embodiment, for example, an apparatus can include a memory and logic coupled with the memory. The logic can be configured to determine an upper body oxygen consumption of the patient, determine, during the dialysis process, a hemoglobin concentration and a venous oxygen saturation, as measured via an optical blood monitor operably coupled to an extracorporeal circuit of a dialysis system performing the dialysis process, an arterial oxygen saturation as measured via a pulse oximeter operably coupled to the patient, an arterial-venous oxygen content difference based on the arterial oxygen saturation and the venous oxygen saturation, and an upper body blood flow (UBBF) as (the upper body oxygen consumption) / (the arterial-venous oxygen content difference), and determine a treatment recommendation based on the upper body blood flow. Other embodiments are also described.

An oxygen saturation determination device disclosed herein comprises a processor that: calculates the intensity and the waveform amplitude of a second pulse wave signal; calculates a first threshold value for the waveform amplitude of a first pulse wave signal on the basis of the waveform amplitude of the second pulse wave signal and a preset reference value of oxygen saturation; determines that the oxygen saturation in an artery is equal to or greater than the reference value when the amplitude of the acquired first pulse wave signal is equal to or less than the calculated first threshold value; and determines that the oxygen saturation in the artery is less than the reference value when the amplitude of the acquired first pulse wave signal is greater than the calculated first threshold value.

The invention relates to the technical field of medical data processing, in particular to a curative effect evaluation method for persistent pulmonary hypertension of premature infants. The method comprises the following steps: acquiring a target oxygenation index, a target arterial alveolar oxygen partial pressure ratio and a target pulmonary artery pressure value of a premature infant to be detected at each moment in a current persistent pulmonary hypertension treatment time period; determining a basic curative effect evaluation value and a deterioration label value at each moment; segmenting a current persistent pulmonary hypertension treatment time period; and according to the curative effect evaluation adjustment coefficient and the basic curative effect evaluation value at the current moment, determining a current curative effect overall evaluation value which is used for assisting a doctor in curative effect evaluation of the persistent pulmonary hypertension of the premature infant. According to the method, various data related to the curative effect in the current persistent pulmonary hypertension treatment time period, such as the oxygenation index and the pulmonary artery pressure value, are analyzed, so that the setting reasonability of the final curative effect evaluation value for assisting the evaluation of the persistent pulmonary hypertension curative effect of the premature infant is improved.

A system includes an enclosed tent or chamber or a breathing apparatus, a hypoxia induction system and a device for measuring arterial oxygen saturation in a subject breathing air within the enclosed tent or chamber or from the breathing apparatus. The hypoxia induction system delivers oxygen-depleted air having between 5 to 20% O2 to the enclosed tent or chamber or breathing apparatus. The system adjusts the oxygen content of the oxygen-depleted air being delivered to the enclosed tent or chamber or the breathing apparatus based upon the arterial oxygen saturation measured by the device such that oxygen saturation in the subject is maintained within a range of 50% to 90%.