Pulse oximeter with improved accuracy and response time
US5190038A · kind A · utility
484Cited by
11References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 1, 1989 |
| Grant date | Mar 2, 1993 |
| Priority date | — |
| Expiry date | Nov 1, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/1244
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An improved pulse oximeter for the measurement of oxygen saturation in the blood, which is faster and more accurate than conventional pulse oximeter. Improved speed and accuracy is attained by elimination of normalization and feedback circuitry and the use of analog to digital converting devices having a wide dynamic range along with a sophisticated computer analysis. The instant invention eliminates inaccurcies resulting from channel matching errors, and detects and eliminates aberrant input data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.