Blood pressure monitoring using a multi-function wrist-worn device
US12220213B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2020 |
| Grant date | Feb 11, 2025 |
| Priority date | — |
| Expiry date | Oct 28, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG16H40/67
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Methods and devices for obtaining a blood pressure measurement of a subject measure a transit time of a blood pulse of the subject. A method includes sensing, with a pulse ejection sensor of a wrist-worn device, ejection of blood from the left ventricle. Arrival of a resulting blood pressure pulse at the wrist is sensed via a pulse arrival sensor of the wrist-worn device. A transit time of the blood pressure pulse from the left ventricle to the wrist is determined. A relative blood pressure value of the subject is determined based on the transit time. A reference absolute blood pressure value associated with the relative blood pressure value is received. An absolute blood pressure value for the relative blood pressure value is determined based on the reference absolute blood pressure value and the relative blood pressure value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.