Method and apparatus for measuring blood pressure by the oscillometric technique
US6719703B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 15, 2001 |
| Grant date | Apr 13, 2004 |
| Priority date | — |
| Expiry date | Feb 17, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/022
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and apparatus for measuring blood pressure by the oscillometric technique. The method incorporates variable PIP's. The method comprises the steps of obtaining a value for the peak amplitude Amax of an oscillometric envelope; determining a cuff pressure, CP, which corresponds in time with Amax, this pressure representing the MAP of the subject; computing a variable value PIPSBP as a function of MAP; performing the calculation Asbp=Amax*PIPSBP to determine a systolic amplitude value Asbp along the oscillometric envelope; and determining the cuff pressure C which corresponds in time to Asbp, this value representing the systolic blood pressure (SBP) of the subject. PIP can be calculated using a piece-wise linear, polynomial, exponential or other function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.