Self-calibrating supplemental oxygen delivery system
US6910482B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 18, 2002 |
| Grant date | Jun 28, 2005 |
| Priority date | — |
| Expiry date | Oct 18, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2202/03
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An on demand supplemental oxygen delivery system that is self-calibrating includes a tank containing a supply of oxygen and a nasal cannula through which the oxygen may be provided to a patient when the system solenoid valve is in the open condition. When the valve is in the closed condition, the cannula communicates with a pressure transducer via a transducer line. An orifice is formed in the line so that the pressure within the transducer line goes to atmospheric pressure when the valve is in the open condition. The pressure transducer reads the atmospheric pressure and directs it to a system controller where it is stored as a reference pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.