36 results about "Blood pressure method" patented technology

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.

Methods and systems for determining a blood pressure value for a patient in a non-invasive manner are disclosed. A photoplethysmograph (PPG) signal is obtained from a patient's measurement location. Clinical parameters of the patient are also received. Based on measurement parameters extracted from the PPG signal and the clinical parameters, a fixed length vector is generated. The fixed length vector is analyzed using a deep belief network, and an estimated blood pressure reading is output.

The invention relates to a blood pressure measuring module and a blood pressure measuring method. The measuring module comprises a cuff, a charging and discharging control module, a pressure detectionmodule, a pressure processing module, CPU, a sound detection module for collecting pulse sound and a sound processing module for amplifying and filtering the collected pulse sound. In one measurement, the CPU is used for searching the pulse wave and pulse sound automatically, obtaining pulse wave and pulse wave sequence corresponding to cuff pressure, pulse sound and pulse sound sequence corresponding to cuff pressure, blood pressure data of an oscillation method and blood pressure data of an auscultatory method, giving reasonable and accurate final measurement result according to comparisonto two groups of blood pressure data and judgment of signal quality, and providing reliable data for diagnosing the blood pressure condition of patients accurately. Meanwhile, the invention realizes the self-adapting charging manner of determining the charging target pressure according to the pulse amplitude, and has the advantages of simple operation as well as rapid and accurate measurement.

The invention provides a blood pressure measuring method and device, and belongs to the technical field of blood pressure measurement.The problems that existing blood pressure measuring equipment with no cuff cannot call computing parameters conveniently, and errors are likely to be caused are solved.The blood pressure measuring method comprises the steps that calibration data matched with user identity characteristic data is built and prestored through electrocardiogram wave signals at first; when a user measures blood pressure, the prestored calibration data of the user is extracted according to the g method comprises the steps that calibration data matched with user, and automatic identification of the user identity is achieved; the phenomenon that the user manually inputs identity information and selects calibration parameters is avoided, the trouble that identity information needs to be frequently and manually input to select calibration parameters on the condition that multiple users share equipment is solved, using convenience is improved, and error probability is reduced.The blood pressure measuring device is simple in hardware structure, convenient to use and operate and suitable for being used by multiple users at the same time.

Provided are a blood pressure measuring apparatus capable of effectively eliminating the influence which the volume change in an upstream portion of an occluding cuff has on a pulse wave detection cuff in an oscillometric double-cuff system, increasing the S/N ratio of systolic blood pressure detection, and accurately measuring the blood pressure with an inexpensive arrangement, a cuff, and a blood pressure measuring method. The apparatus includes a first pipe (106) connected to an occluding air bag (108) and sub air bag (109). The first pipe is connected to the sub air bag, and the sub air bag is connected to the occluding air bag via an entirely foldable rod shape member (111) capable of maintaining a hollow portion. The sub air bag is laid over the occluding air bag by folding a middle pipe.

Methods and a computer program product for using a circulatory measurement on an extremity of a particular subject to derive an aortic blood pressure for that subject. A model is constructed that maps a peripheral cardiovascular waveform to a central cardiovascular waveform on the basis of a plurality of model parameters. A time record is obtained using a non-invasive blood pressure sensor disposed at a solitary position periphery of the cardiovascular system of a subject. The time record is then transformed to obtain a plurality of test central blood pressure waves, with a single test central blood pressure wave is based on each of a plurality of sets of values of the model parameters. An optimum set of values of the model parameters is then selected, based on a specified criterion applied to the plurality of test central blood pressure waves, so that the aortic circulatory waveform of the subject can be obtained.

The invention discloses a real-time wireless blood pressure monitoring system, a blood pressure measuring device and a blood pressure analysis method. The system comprises the blood pressure measuring device, a wireless network, and an upper computer. A MCU control chip serves as a core of the blood pressure measuring device. An electromagnetic valve and an inflating pump are controlled to inflate and deflate a cuff, blood pressure signals input by a pressure sensor are acquired meanwhile and are internally operated by the MCU control chip, blood pressure data obtained by calculation is transmitted to the upper computer through the wireless network, and finally the data is stored, analyzed and displayed through the upper computer. The real-time wireless blood pressure monitoring system is simple to operate, convenient to carry and low in cost; meanwhile, a blood pressure judgment method applied to embedded system applications is achieved, and accuracy is high.

The invention relates to a dual-PPG (Photoplethysmography)-based blood pressure measuring method and device. The method comprises the following steps: penetrating human tissues by using projection light, wherein the influence factor of the light absorption of the human tissues can be obtained according to a Beer-Lambert law: log(I0/I)=epsilonCl; reflecting the change of blood volume through a PPG signal; calculating the blood pressure by using PTT (Push to Talk). The method and the device have the advantages that self-detection can be realized through the blood pressure measurement based on PPG, and the all-day blood pressure can be better monitored based on continuous blood pressure monitoring of PPG in order to reflect the diurnal change situation of the blood pressure. The method and the device have important significance to the prevention of sudden cardiovascular diseases. Through the continuous blood pressure measurement based on PPG, the treatment of hypotensive drugs can be well monitored. Compared with other continuous blood pressure measurement, the continuous blood pressure measurement way based on PPG has remarkable advantages.

A blood pressure detection apparatus includes a pressure sensor (12), a press mechanism (10) that applies pressure to a blood vessel by pressing a living body, and can gradually decrease the pressure, and a blood pressure calculation section that determines the pressure when a given waveform pattern appears in a waveform of pulse waves obtained by the pressure sensor to be a maximal blood pressure, determines the pressure when the waveform has a maximum amplitude to be a mean blood pressure, and calculates a minimal blood pressure using the maximal blood pressure and the mean blood pressure.

Methods and apparatus for noninvasively estimating a blood pressure are provided. A pulmonic (P) component extracted from a second heart sound (S2) signal is analyzed to obtain a number of oscillations in the P component. A predetermined relationship between the number of oscillations and PAP is used to generate a blood pressure estimate. A PCG sensor including a mechanical filter for receiving heart sounds from a chest wall is also provided. The pressure of the PCG sensor on the chest wall is adjustable.

The invention discloses a blood pressure detection method and apparatus based on arterial load and photoelectric pulse wave. By loading suitable pressure on a superficial position of a human artery, diastolic blood pressure and systolic blood pressure can be acquired by calculating the blood pressure of the artery according to load of the artery and photoelectric pulse wave of the downstream of the artery along the blood flow direction, wherein the pressure is loaded at a superficial position of a human superficial position, such as the carotid artery, the brachial artery, the radial artery, the femoral artery, the posterior auricular artery, the facial artery and the like; detection positions of the photoelectric pulse wave are the pressurized position or at least one position which is at the downstream of the pressurized position along the blood flow direction and selected from superficial positions of human arteries communicating with the pressurized artery; and a photoelectric pulse wave detection path can be further added at a superficial position of a non-pressurized artery. The blood pressure detection apparatus comprises an arterial load signal path, at least one photoelectric pulse signal path and a fixing structure. Mapping relation between blood pressure and the signal paths is acquired by establishing a learning model on bases of the arterial load signal path and the photoelectric pulse signal path; and blood pressure detection is realized on basis of the mapping relation. The blood pressure detection method and apparatus are mainly used for detecting blood pressure of the human body or an animal.

Methods and apparatus for noninvasively estimating a blood pressure are provided. A target interval is determined from a diastolic signal such that the target interval includes an S2 component. The S2 component is extracted from the diastolic signal using the target interval and is analyzed in the target interval to obtain a number of oscillations in the S2 component. A predetermined relationship between the number of oscillations in the S2 component and blood pressure is used to generate a blood pressure estimate.

The embodiment of the invention provides a blood pressure detection method and a device, which are applied to a visual network. The method comprises the following steps: the blood pressure meter obtains the first fingerprint information inputted by the user, and uploads the first fingerprint information to the video network server based on the first video network protocol. The blood pressure meterreceives a query result returned by the video networking server based on the second video networking protocol; if the blood pressure meter determines that the query result indicates that the first fingerprint information exists in the user information base, the first blood pressure data of the user is measured. The blood pressure meter uploads the first blood pressure data to the visual network server based on the first visual network protocol, and the visual network server is used for associating the first blood pressure data with the first fingerprint information and storing the first bloodpressure data in the user information base. The embodiment of the invention facilitates the use of a user who is unable to correctly select a key, facilitates a plurality of users to use the same blood pressure meter to measure blood pressure, combines the visual network, reduces the workload of the blood pressure meter, reduces the occupation of the memory of the blood pressure meter, and improves the performance of the blood pressure meter.

The invention discloses a blood pressure detection device and a blood pressure detection method thereof. The blood pressure detection device comprises an elastic band; the elastic band is provided with a measuring box; a measuring chamber is arranged inside the measuring box; a blood pressure sensor is arranged inside the measuring chamber; a flow valve capable of controlling a flow of the blood pressure sensor is arranged inside the measuring chamber; a pressure sensor arranged above the left of the blood pressure sensor is arranged inside the measuring chamber. The blood vessel is compressed with a hydraulic pressure device and a solid presser herein so that the solid presser can compress the blood vessel fast; during reduced pressure measurement of blood pressure, pressure of oil decreases stably since the hydraulic oil is nearly uncompressible and hydraulic drive stability is better than pneumatic drive stability; therefore, blood pressure measuring precision is increased. Therefore, pressure increasing in blood pressure measurement herein is fast; self-pressure drops stably during measuring; blood pressure measuring precision is improved.

The invention provides a blood pressure measuring method and device, and relates to the technical field of blood pressure measurement. The blood pressure measuring method includes the steps that a cardiac impedance signal and a pulse signal of a measured person are measured; ejection starting time is determined according to the starting time of the cardiac impedance signal; a reference time is determined according to the pulse signal; transmission time of pulse waves is determined according to the ejection starting time and the reference time; the blood pressure of the measured person is determined according to the transmission time and a time-blood pressure formula.