Apparatus for gas delivery
US6397845B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 8, 1998 |
| Grant date | Jun 4, 2002 |
| Priority date | — |
| Expiry date | Dec 8, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2230/60
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus for controlling gas delivery to a patient is disclosed, wherein delivery is adapted to maintain a physiological sleep state. The apparatus includes a monitoring device that monitors EEG, EOG, EMG, patient position and patient breathing. The apparatus also contains a microprocessor, which is programmed to derive sleep state specific indicators from the data received by the monitoring device and to determine if the sleep state is in a stable or deteriorating phase, where upon gas pressure will be automatically adjusted to maintain the sleep state if desired. The microprocessor is programmed with a unique automatic sleep staging algorithm and a gas pressure seek algorithm which work together to automatically adjust delivered respiratory gas pressure to a user based upon the determined sleep state and the sleep states condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.