30 results about "Cerebral oxygen" patented technology

A method for providing and adjusting cerebral cooling in response to changes in a physiological parameter. A spray having a boiling point between 38-300° C. is delivered to the surface of a patient's nasal cavities. The spray causes cooling by direct heat transfer through the nasopharynx and hematogenous cooling through the carotids and the Circle of Willis. A physiological parameter, such as cerebral temperature, changes in cerebral blood flow or brain oxygenation is monitored. The delivery rate of the spray is adjusted in response to the physiological parameter.

The invention discloses a non-invasive intracranial pressure monitoring method and device. The monitoring method: first collect head pulse wave data, temperature data and ECG data, then use the temperature data to correct the head pulse wave, and then use the corrected head pulse wave The head pulse wave data is used to calculate the local cerebral oxygen saturation, and then the corrected head pulse wave data and ECG data are used to calculate the pulse wave propagation time, and finally the intracranial pressure value. The present invention uses the pulse wave propagation time to calculate the intracranial pressure value, and introduces local cerebral oxygen saturation and temperature data for correction, which can reduce the influence of temperature and local cerebral oxygen saturation on the monitoring accuracy of intracranial pressure, and quickly reflect the intracranial pressure. changes in internal pressure.

The invention discloses a cardio-pulmonary resuscitation feedback control method and system, and relates to the technical field of medical care. The method comprises the steps of collecting brain oxygen signals of a patient; preprocessing the brain oxygen signals of the patient; separating out first signals and second signals from the preprocessed brain oxygen signals through independent componentanalysis, wherein the first signals are cardio-pulmonary resuscitation signals, and the second signals are spontaneous circulation signals; according to the first signals and the second signals, adjusting and controlling cardio-pulmonary resuscitation of the patient. By means of the method and system, the technical problems in the prior art that during cardio-pulmonary resuscitation, whether or not the patient restores spontaneous circulation is difficult to judge, cardio-pulmonary resuscitation has negative effects, and the patient cannot be effectively cured are solved. The curative rate ofcardio-pulmonary resuscitation can be greatly increased, and the method and system have the technical advantages of being high in pertinence, noninvasive, high in safety coefficient and easy to operate.

A device for measuring brain oxygen level of a subject, including a probe (210) and a detecting means (220), which are respectively coupled to a processor (230). According to the example, the probe (210) includes three light sources (215a, 215b, 215c) that simultaneously emit the first, second, and third NIR wavelengths across the brain of the subject. The first NIR wavelength is the isosbestic wavelength for oxy-hemoglobin (HbO2) and deoxy-hemoglobin (Hb), the second NIR wavelength is shorter than the first NIR wavelength, and the third NIR wavelength is longer than the first NIR wavelength. The detecting means (220) includes a first, second and third detectors (221, 222, 223) for respectively detecting the NIR intensities of the first, second and third NIR wavelengths traveled across the brain. The processor (230) is configured to determine blood oxygen level based on the measured NIR intensities of the first, second and third NIR wavelengths by use of build-in algorithm derived from Beer-Lambert Law. And method of detecting brain hematoma of a subject by use of the present device.