Ventilator adaptable for use with either a dual-limb circuit or a single-limb circuit
US7617824B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 5, 2006 |
| Grant date | Nov 17, 2009 |
| Priority date | — |
| Expiry date | Feb 18, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/3584
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A ventilator of the present invention includes a housing, a gas flow generator disposed in the housing, a gas outlet port provided on an exterior surface of the housing, and a first conduit coupling the gas flow generator to the gas outlet port. A gas inlet port is also provided on an exterior surface of the housing. A second conduit couples the gas inlet port to a first exhaust valve in the housing that regulates a flow of exhaust gas from the second conduit. A second exhaust valve in the housing is coupled to the first conduit and regulates a flow of exhaust gas from the first conduit. A controller coupled to second exhaust valve causes the second exhaust valve to change a degree of flow restriction based on a respiratory phase of a patient coupled to the ventilator when the ventilator is operating in a single-limb ventilation configuration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.