Continuous blood pressure measuring device

The present invention provides non-invasive devices, methods, and systems for determining a pressure of blood within a cardiovascular system of a user, the cardiovascular system including a heart and the user having a wrist covered by skin. More particularly, the present invention discloses a variety of wrist-worn devices having a variety of sensors configured to non-invasively engage the skin on the wrist of the user for sensing a variety of user signals from the cardiovascular system of the user. Generally, approaches disclosed herein may passively track blood pressure values without any interaction required on the part of the user or may allow for on demand or point measurements of blood pressure values by having a user actively interact with the sensors of the wrist-worn device. Approaches disclosed herein further allow for absolute blood pressure values to be determined directly without the requirement for any periodic calibrations or for relative blood pressure values to be tracked so as to provide relative blood pressure indices.

Blood pressure monitoring using a multi-function wrist-worn device

The invention provides a wearing device for collecting multiple sign parameters. The wearing device comprises a wearing garment, three electrocardioelectrodes, a physiological parameter sensing node, a motion parameter sensing node and fabric leads, wherein the three electrocardioelectrodes are arranged in the wearing garment, and respectively positioned below the left sternum and clavicles, below the right sternum and clavicles and on the right abdomen; the physiological parameter sensing node is mounted on the left chest part of the wearing garment, and comprises a physiological parameter microcontroller, a physiological parameter bluetooth communication module, an electrocardiosignal analog front end chip and a temperature sensor; the signal input end of the electrocardiosignal analog front end chip is connected with the electrocardioelectrodes through the fabric leads; and the motion parameter sensing node is mounted on the left abdomen of the wearing garment, and comprises a motion parameter microcontroller, a motion parameter bluetooth communication module, an acceleration sensor, a gyroscope, a weak magnetic sensor and a baroceptor. The wearing device can collect the sign parameters including the electrocardio, the body temperature, the movement posture and the like of a wearer in real time, and after wearing of the device, the wearer feels comfortable, and thus the wearing device has a good market application prospect.

Wearing device for collecting multiple sign parameters

A blood-pressure continuous-measurement device, a measurement model establishment method, and a system. The device comprises: a signal collector (100), used for collecting electrocardiosignals and pulse wave signals of a measured object for multiple consecutive cardiac cycles, so as to obtain two sets of synchronous electrocardiosignals and pulse wave signals; a signal reception module (210), used for receiving the two sets of synchronous electrocardiosignals and pulse wave signals; and a blood pressure computing module (220), used for extracting a first characteristic point of the pulse wave signals according to the two sets of synchronous electrocardiosignals and pulse wave signals, extracting a second characteristic point of the electrocardiosignals in a same cardiac cycle according to the first characteristic point, acquiring corresponding characteristic values according to the first characteristic point and the second characteristic point, selecting a characteristic parameter from the characteristic values according to an evaluation parameter, and acquiring a blood pressure value according to a pre-established blood pressure computing model of characteristic parameters. The device, the method and the system have the characteristics of high precision, low complexity, low cost, convenience in measurement, and high real-time quality.

Blood-pressure continuous-measurement device, measurement model establishment method, and system

The invention relates to an individualized correction method and a device used for continuous measurement and estimation of arterial blood pressure by pulse wave The PWTT (Pulse Wave Translation Time) of a measured person is recorded in real time, the mean blood pressure BP1 is acquired and recorded, the PWTT1 at the corresponding time is obtained, and the two data are taken as a first set of data Then, the PWTT of the measured person is continuously monitored and recorded and at each time of monitoring that the absolute value of a difference between the present PWTT value and the PWTT value in the set of data recorded previously is larger than a domain value, an oscillography blood pressure instrument is triggered to measure the present mean blood pressure value BPn of the measured person In this way, two or more sets of PWTT values and corresponding mean BP values are sequentially acquired in a monitoring time section, and two or more sets of data are taken as calculating data to calculate the individualized regression coefficients a and b of an equation A The method and the device are easy in operation and implementation, and can enable the calculated regression coefficients to more agree with the actual conditions of measured individuals

Individualized correction method and device used for continuous measurement and estimation of arterial blood pressure by pulse wave

The invention relates to a device and method for measuring arterial blood pressures based on pulse wave signals and electrocardiosignals, wherein the device comprises a microprocessor, a pulse wave signal measuring unit, an electrocardiosignal measuring unit, a communication module, a data storage module and an LCD (liquid crystal display) module, and the microprocessor is respectively connected with the pulse wave signal measuring unit, the electrocardiosignal measuring unit, the communication module, the data storage module and the LCD module by control lines. The device provided by the invention is small in size, therefore, the device is suitable to be worn for non-intrusively and continuously detecting and recording the blood pressure values for a long time. Compared with the existingblood pressure measurement techniques, the device and method provided by the invention have the advantages that in the process of blood pressure measurement, the dependence on an inflated cuff is ridded; and meanwhile, the blood pressure calculation method applied to the device is small in computation load, and can be implemented by the microprocessor with a limited computational capability, therefore, the device is low in cost and easy to use.

Device and method for measuring arterial blood pressures based on pulse wave signals and electrocardiosignals

The invention relates to a wearable multiple physiological parameter recording device used for human physiological parameter measurement. A wearable coat and a pulse wave measurement unit are respectively connected with a control box, and the control box is connected with a smart phone by virtue of Bluetooth, thus forming the recording device. Fitting computation is carried out on propagation time parameter of pulse wave, thus obtaining a blood pressure value. Monitoring software taking the smart phone as a platform is provided, real-time receiving of electrocardio data and pulse wave data is realized, dynamic measurement and recording on three important physiological parameters of electrocardio, blood pressure and blood oxygen are realized, real-time computation of the blood pressure value and a blood oxygen value is realized, and the functions of file storage, signal wave display, abnormal electrocardiosignal identification and remote connection are realized. A wearable physiologic parameter monitoring recording device applicable to both hospital and personal use is provided under the condition that a pressure sleeve strap is not required. The recording device is convenient to wear, the measurement is accurate, and the cost is relatively low.

Wei Guo

Papers

Device and method for measuring arterial blood pressures based on pulse wave signals and electrocardiosignals

Wearable multiple physiological parameter recording device