Breathing assistance apparatus
US7905231B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 24, 2004 |
| Grant date | Mar 15, 2011 |
| Priority date | — |
| Expiry date | Nov 3, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62B9/006
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
This invention concerns a breathing assistance apparatus capable of operating in alternating inhalation and expiratory phases wherein; a) the control means of the apparatus comprise selection means (152) capable of selecting a pressure parameter or a flow rate parameter to define; b) the said reference value for the gas source, the said selection means are controlled by an automatic control unit (51), the said control unit being: I) connected to pressure and flow rate sensors situated on the inhalation duct to form a direct closed regulation loop for selecting a reference value parameter, II) associated to a program allowing the selection to be made in real time from a pressure or flow rate signal, so that the association of a direct closed regulation circuit for the selection of a reference value parameter with a valve permitting proportional operation, allows real time control of barometric and volumetric operating modes of the apparatus, between the inhalation and expiratory phases and during these phases. The invention also concerns associated operating processes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.