Method and device for assessing the state of blood vessels
US5715826A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 8, 1996 |
| Grant date | Feb 10, 1998 |
| Priority date | — |
| Expiry date | Mar 8, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/7257
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and device for use in assessing the state of blood vessels within the human or animal body is provided. A vessel segment is identified for investigation, and at least one blood pressure responsive device is used to obtain pulse volume recordings of different sites, representing pressure at sites proximal and distal to the vessel segment. From the waveform signals obtained, Fourier transform spectra are determined for the respective sites and the transfer function between them is calculated. This is then analyzed to determine a clinically significant parameter, such as the integral of the transfer function, and this can be compared with a predetermined value to provide an indication as to the state of the vessel segment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.