Peripheral arterial monitoring instruments
US5724981A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 22, 1994 |
| Grant date | Mar 10, 1998 |
| Priority date | — |
| Expiry date | Nov 22, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/02225
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and apparatus are described for determining characteristics of peripheral arterial volume and compliance. A blood pressure cuff is inflated and deflated around a limb of the body and pressure measurements are taken. The volume of air removed from the cuff is determined in a quantifiable manner, such as by expelling air through an orifice of known characteristics or by means of a volume of known characteristics. The detected pressures and volume of air removed are used to compute oscillation volume, which in turn is used to display arterial capacity and compliance as a function of transmural pressure and time. Arterial capacity may be displayed in terms of arterial radius, arterial cross-sectional area, or arterial volume. Also, systolic and pulse pressures are determined using only these determined values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.