Ventilator exhalation flow valve
US9962515B2 · kind B2 · utility
0Cited by
43References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2016 |
| Grant date | May 8, 2018 |
| Priority date | — |
| Expiry date | Sep 20, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/581
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Described herein is an exhalation valve for a ventilator that controls gas flow through a patient exhalation line in response to a target pressure within the line. The valve controls gas flow by (i) providing both a high frequency signal and a low frequency signal through a coil positioned in a fixed magnetic field, (ii) determining a position of the coil by detecting the high frequency signal, and (iii) controlling a position of the coil by adjusting the low frequency signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.