Systems, devices, and methods for measuring blood pressure of a user
US10702171B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Sep 8, 2015 |
| Grant date | Jul 7, 2020 |
| Priority date | — |
| Expiry date | Nov 6, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2562/046
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention generally relates to blood pressure monitoring. In some embodiments, methods and devices of measuring a mean arterial pressure are provided and/or monitoring blood pressure changes. A wrist-worn device may include a plurality of sensors backed by a plurality of actuators. Subsets of the plurality of sensors may be selectively actuateable against a wrist of a user using one or more of the plurality of actuators. A preferred sensor and location may be identified based on pressure signals received from each of the sensors. In some embodiments, devices may use a fluid bladder coupled with piezoelectric film sensors. A fluid bladder pressure sensor may be used to calibrate the piezoelectric film signal to provide a static and dynamic pressure reading. In yet another embodiment, a mean arterial pressure may be calculated by processing a swept pressure signal obtained as a sensor is swept through different heights.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.