Pulse oximeter
US4883353A · kind A · utility
188Cited by
4References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 11, 1988 |
| Grant date | Nov 28, 1989 |
| Priority date | — |
| Expiry date | Feb 11, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/14552
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A pulse oximeter having a sensor responsive to light transmitted through an area of blood flow which is optically absorbed by hemoglobin for producing a pulsatile waveform indicating the current pulsatile component of blood flow. A process waveform is created for tracking the process of the oximeter during its determination of a maximum and a minimum value of the pulsatile waveform, which is used for calculating the saturation of oxygen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.