Method and apparatus for the noninvasive assessment of hemodynamic parameters including blood vessel location
US7503896B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2001 |
| Grant date | Mar 17, 2009 |
| Priority date | — |
| Expiry date | Jul 9, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/726
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and apparatus for determining the mean arterial blood pressure (MAP) of a subject during tonometric conditions. In one embodiment, the apparatus comprises one or more pressure and ultrasound transducers placed over the radial artery of a human subject's wrist, the latter transmitting and receiving acoustic energy so as to permit the measurement of blood velocity during periods of variable compression of the artery. In another aspect of the invention, a wrist brace useful for measuring blood pressure using the aforementioned apparatus is disclosed. In yet another aspect of the invention, backscattered acoustic energy is used to identify the location of the blood vessel of interest, and optionally control the position of measurement or treatment equipment with respect thereto.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.