Methods and systems for determining a light drive parameter limit in a physiological monitor
US10188330B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 2015 |
| Grant date | Jan 29, 2019 |
| Priority date | — |
| Expiry date | Jul 16, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/7246
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A physiological monitoring system may receive a sensor signal from a physiological sensor. The system may determine a parameter based on the sensor signal, for example variability of a blood oxygen saturation value or the percent modulation of a light signal. The system may determine a light drive parameter limit based on one or more parameters. For example, the system may determine a light drive current limit. The frequency of changes in the limit may be regulated using a state machine and other techniques that include hysteresis. An extant light drive parameter may be updated or changed in accordance with the light drive parameter limit and a light drive signal may be generated based on the light drive parameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.