Pressure control in a blower-based ventilator
US5694923A · kind A · utility
115Cited by
5References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 30, 1996 |
| Grant date | Dec 9, 1997 |
| Priority date | — |
| Expiry date | Aug 30, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2016/0036
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A valving arrangement for use with or for a blower-based ventilator system, such as a pressure support ventilator, and a pressure support ventilator having such a valving arrangement, in which blower output can be controlled in such a manner that desired levels of pressure are able to be provided without excessive waste of blower output flow. In one preferred embodiment, a first valve is provided that serves to restrict blower flow, without venting the same from the system, along with a second valve for relieving pressure as needed. Also contemplated herein are methods for controlling such a valving arrangement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.