Pulse oximeter with improved accuracy and response time
US5820550A · kind A · utility
188Cited by
11References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 16, 1995 |
| Grant date | Oct 13, 1998 |
| Priority date | — |
| Expiry date | Mar 16, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/1244
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An improved pulse oximeter apparatus and method for the measurement of oxygen saturation in the blood, which is faster and more accurate than conventional pulse oximeters. 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 inaccuricies resulting from channel matching errors, and detects and eliminates aberrant input data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.