Respiratory flow sensor
US7032463B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 8, 2004 |
| Grant date | Apr 25, 2006 |
| Priority date | — |
| Expiry date | Oct 8, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/40
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A respiratory tract differential-pressure flow sensor, including a tube having a distal end that is insertable into a respiratory tract, an interfering body disposed within the tube proximal to the distal end and having a first edge facing one end of the tube and a second edge facing away from the end, the interfering body extending across the diameter of the tube, a first pressure sensing port operative to sense an air pressure, the first port being disposed in the first edge not abutting the wall of the tube, and a second pressure sensing port operative to sense an air pressure, the second port being disposed in the second edge not abutting the wall of the tube, where either of the edges is inclined inwardly towards the axis of the interfering body extending across the diameter of the tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.