Nasal and oral cannula breathing detection device
US7337780B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 4, 2004 |
| Grant date | Mar 4, 2008 |
| Priority date | — |
| Expiry date | Apr 20, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2230/432
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A cannula comprising a main body which defines an internal chamber therein. A first and second nasal prongs, respectively, communicate with the internal chamber to define first and second nasal prong passages. A mouthpiece has a gas passageway and a retainer passageway and a first end of the gas passageway communicates with the internal chamber while a second free end of the mouthpiece has a gas opening therein. A shape retaining member is received within the retainer passageway to facilitate retaining an adjusted position of an opening of the gas passageway with respect to a remainder of the cannula. A method of forming the cannula is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.