Method and apparatus for monitoring biological abnormality and blood pressure
US6923769B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 21, 2002 |
| Grant date | Aug 2, 2005 |
| Priority date | — |
| Expiry date | Jul 10, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/721
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In a clinical and physiological abnormality monitoring apparatus, and blood pressure monitoring apparatus detects a blood pressure abnormality and the like of a body by employing a pulse wave signal. A frequency analysis is carried out with respect to a pulse wave signal, while this pulse wave signal corresponds to time sequential data of pulse waves. As a result, both a C-frequency component indicative of a fluctuation component of a base line of the pulse wave signal, and also an A-frequency component representative of the respective pulse waves are acquired. A ratio C/A of power of a peak contained in the C-frequency component with respect to power of a peak contained in the A-frequency component is calculated to determine abnormality of the blood pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.