Method and apparatus for producing a central pressure waveform in an oscillometric blood pressure system
US9433358B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 7, 2009 |
| Grant date | Sep 6, 2016 |
| Priority date | — |
| Expiry date | Jul 10, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG16H40/63
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A central arterial blood pressure waveform is developed from pressure waveforms obtained from proximal and distal blood pressure cuffs on the brachial artery of an arm that are inflated to a supra-systolic pressure, The proximal and distal cuff pressure waveforms associated with at least one cardiac ejection cycle are sensed, The propagation times of a blood pressure pulse from the entry of the artery to the proximal cuff and from the proximal cuff to the distal cuff are calculated, permitting calculation of a reflection coefficient of the pressure pulse at one of the proximal and distal cuffs. Assuming a physical model of wave propagation along the artery between the aorta and the proximal and distal cuffs, an estimated pressure waveform at the opening of the artery can be determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.