77 results about "Blood Pressure Determinations" patented technology

A method for estimating systolic and diastolic pressure is disclosed herein. The method includes obtaining a predetermined type of blood pressure data from a patient, and providing previously acquired blood pressure data obtained from a plurality of different subjects. The method also includes implementing the previously acquired blood pressure data to select systolic and diastolic amplitude ratios that most closely correlate with the predetermined type of blood pressure data obtained from the patient. The selected systolic and diastolic amplitude ratios are adapted to compensate for the effects of arterial compliance. The method also includes implementing the selected systolic and diastolic amplitude ratios to generate a systolic and diastolic blood pressure estimates.

Methods and systems for determining blood pressure from a pressure signal are disclosed. A patient's blood pressure may be determined by analyzing features of a wavelet transformation of a pressure signal obtained during an occlusion procedure. Ridges in a scalogram of the transformed signal may be identified and used to determine an envelope of a pressure oscillation signal, to which oscillometric blood pressure determination techniques may be applied.

The present disclosure pertains to a method and system for determining the blood pressure dip of a subject based on features extracted from information generated by an on-body sensor system. The on-body sensor system includes a photoplethysmographic (PPG) sensor and a motion sensor. Blood pressure variation is captured throughout the day and utilized along with determinations of whether a subject is asleep or awake. The blood pressure determinations collected throughout the day, along with determinations of sleep periods, are used to determine a blood pressure dip for the day the on-body sensor system is worn.

The blood pressure monitor (10) comprises an artery pressing section which locally presses an artery of the extremities or fingers at an arbitrarily variable pressing force, a vibration sensor (22) detecting a vibration of the artery at the pressed point or points on a peripheral side thereof, a mounting mechanism (26) which positions the artery pressing section and the vibration sensor (22) on the artery, a blood pressure determination section which determines the maximum and minimum pressures based on various pressing force values applied by the above-mentioned artery pressing section and signals detected by the vibration sensor (22) at these various pressing force values, guides (34) which are provided on each side of the vibration sensor (22) and guide the vibration sensor (22) to the artery by being located on the both sides of the artery, and a peripheral side pressing section which presses the artery on the peripheral side from the vibration sensor (22).The blood pressure monitor (10) does not impart an unpleasant or disagreeable feeling to the subject.

A non-invasive blood pressure system comprises a blood pressure cuff having an identifier and an aperture such that the identifier can be read through the aperture when the cuff is in a desired configuration. Another comprises a processor in operative communication with the cuff and configured to initiate a blood pressure determination when the identifier can be read through the aperture, while a method provides such blood pressure cuffs.

A system and method for processing a cuff pressure waveform to determine the blood pressure of a patient. The processing unit of the NIBP monitoring system receives status signals from one or more physiological parameter monitors. The physiological parameter monitors each include an operating algorithm that causes the physiological parameter monitor to generate a status signal indicating whether artifacts are present that prevent the determination of the physiological parameter. When the processing unit receives the monitoring signal from the physiological parameter monitor indicating the presence of artifacts, the processing unit adjusts the operation of the NIBP monitor. The adjustment of the NIBP monitor may be to delay the beginning of the NIBP determination cycle until artifacts are no longer present from the physiological parameter monitor or to control the cuff pressure in such a manner as to keep the patient safe and comfortable until the artifacts are no longer present.

A technique for comparing pressure oscillations obtained during a blood pressure determination wherein two or more sets of matching criteria may be employed. The set of matching criteria to be employed is determined based on the heart rate variability or the presence of heart beat irregularities or arrhythmias as determined by an independent heart monitor, such as an ECG. The selected set of matching criteria may then be employed in determining the acceptability of the time interval between two oscillations and the equivalence of the two oscillations based upon one or more oscillation characteristics, such as peak amplitude. In this manner, non-consecutive oscillations may be matched and used in determining blood pressure.

The invention relates to a blood pressure measuring device and a blood pressure recognizing device. The blood pressure measuring device comprises a sensor device, a pulse characteristic data extraction unit, a pressure data extraction unit, a storage unit and a blood pressure determination unit, wherein measured blood pressure data is not influenced by shrinkage and expansion of a living body. The blood pressure recognizing device comprises a blood pressure measuring device, a reference data storage unit, a comparing unit and a display device, wherein the display device is used for displaying output results which are compared by the comparing unit; and data representing the blood pressure is not displayed on the display device, or comparison results and the data representing the blood pressure are not displayed at the same time; the blood recognizing device is particularly applicable to non-medical persons and old people, and has the advantage of promoting patients to see a doctor. The blood pressure measuring device and the blood pressure recognizing device are particularly suitable for monitoring blood pressure continuously and dynamically.

A method, apparatus and computer program product are disclosed for non-invasively determining blood pressure of a subject. To improve the specificity of automatic blood pressure determinations in a patient monitor provided with a non-invasive blood pressure determination unit, a physiological index indicative of sympathetic activity is derived from a subject, variations in the physiological index are monitored, and the blood pressure determination unit is instructed to initiate blood pressure determination when the variations fulfill a predetermined condition.

A blood pressure measurement device includes a measurement air bladder for being wrapped around a body part to be measured, a compression member that compresses the measurement air bladder from the outside of the measurement air bladder against the body part to be measured; an inflation member for inflating the measurement air bladder, a deflation member for deflating the measurement air bladder, a blood pressure determination unit that determines a blood pressure during the inflation by the inflation member or during the deflation by the deflation member, and a control unit that causes the compression member to apply a pressure that is higher than or equal to an atmospheric pressure to the measurement air bladder when an internal pressure of the measurement air bladder reaches or falls below a certain pressure due to the deflation by the deflation member.

The invention relates to a device and a method for measuring heart rate and blood pressure of a living body based on a pulse wave sensor and a fluid pressure sensor. The device comprises a fluid containing module, a pulse sensing module, a pressure sensing module, an electric signal processing module, a control module and an electric signal transmitting module. The pulse sensing module and the pressure sensing module are controlled by the control module and synchronously acquire pressure information of the fluid in the fluid containing module according to a certain frequency and time sequence. The control module analyzes the obtained time sequence arteriopalmus information and pressure information, and obtaining physiological information such as heart rate and blood pressure. According to the device and the method, simple method for acquiring heart rate and blood pressure information and high reliability of the device are realized; heart rate and blood pressure information of the living body can be quickly and instantly determined in an online manner; and the device and the method can be widely used on wearable devices and online monitoring equipment.

Blood pressure determination with resolution sufficient to resolve Pulsus Paradoxus is based on measurement of delay time between points on a heartbeat pulse.

A method for non-invasively estimating blood pressure is disclosed herein. The method includes inflating a cuff and collecting first oscillation amplitude data at a first plurality of cuff pressure levels while inflating the cuff. The method also includes deflating the cuff and collecting second oscillation amplitude data at a second plurality of cuff pressure levels while deflating the cuff. The method also includes fitting a curve to the first oscillation amplitude data and to the second oscillation amplitude data and estimating a blood pressure parameter based on the curve. A non-invasive blood pressure system is also disclosed.

The invention discloses an electronic sphygmomanometer, data processing equipment and a data processing method. The electronic sphygmomanometer comprises a blood pressure determination part, a storage part, an operation part, a judgment part and a calculation part, wherein the calculation part consists of a blood pressure average value calculation unit and a display part; the operation part consists of a group of condition input units used for setting the calculation conditions of blood pressure average values, and each condition input unit consists of a parameter type display area and an input area; the storage part is used for storing the blood pressure determination data and the set parameters; the judgment part is used for carrying out combined judgment on whether the blood pressure determination data stored in the storage part meets the set calculation conditions of the blood pressure average values, and taking the blood pressure meeting the conditions as specific data; and the blood pressure average value calculation part is used for calculating the blood pressure average value according to the specific data. According to the electronic sphygmomanometer provided by the invention, a tester can perform more condition setting and condition combinations for calculating the blood pressure average value according to the needs of the tester, and the electronic sphygmomanometer has the advantages of flexibility for selection and combination forms, simple program, concise operation interface and simple structure.

The present invention relates to a method and an apparatus for non-interfering blood pressure measurements. In particular, the invention relates to an apparatus for continuously monitoring blood pressure for patients at home or at work. The apparatus comprises an extra-corporal sensor for blood pressure determination with a flexible housing adapted to be attached to the body of a living being proximate to an artery, and an electronic circuit for wireless coupling to a remote transceiver in accordance with the blood pressure in the artery, the remote transceiver adapted for wireless coupling to the sensor for generation of a pressure signal in accordance with the blood pressure in the artery, and a processor connected to the remote transceiver for reception of the pressure signal and adapted to estimate systolic and diastolic pressure based on the signal.

The invention belongs to the technical field of clinical detections, concretely relates to a data processing device for the blood pressure determination and a data analysis method. After the routine 24-hour blood pressure detection, the device and the method can get the fast-changing dispersion degree value Sigma of the blood pressure which is a fast-fluctuation dispersion degree based on the slow fluctuation of the human normal physiological blood pressure, and then judge the health conditions of the human blood vessels.