Method and system with divided cannula having low oxygen flow rate and improved end-tidal CO2 measurement
US9814854B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 14, 2014 |
| Grant date | Nov 14, 2017 |
| Priority date | — |
| Expiry date | Nov 9, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2230/432
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A nasal cannula having a face piece including first and second nares which each communicate with a respective nostril of a patient. A septum divides the face piece into first and second flow paths such that the first flow path communicates with the first nare and the second flow path communicates with the second nare. A leading end of the first nare is configured to form a fluid barrier within a first nostril and facilitate only supplying an insufflation gas, via the first flow path, to the patient and prevent exhausting any exhaust gas, of the patient, through the first nostril. A leading end of the second nare is configured to facilitate collecting some of the exhaust gas, from the patient, via the second flow path as well as exhausting a remainder of the exhaust gas out through a second nostril of the patient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.