Catheter oximeter apparatus and method
US4114604A · kind A · utility
129Cited by
6References
19Claims
0Family size
Inventors
Key dates
| Filing date | Oct 18, 1976 |
| Grant date | Sep 19, 1978 |
| Priority date | — |
| Expiry date | Oct 18, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/3151
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An improved catheter oximeter operates on radiation at three or more different wavelengths applied to and scattered back from blood under test to provide an indication of oxygen saturation and is considerably less sensitive to accuracy-degrading variations in the blood and its environment and in the oximeter measuring system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.