Pressure control in CPAP treatment or assisted respiration
US6526974B1 · kind B1 · utility
53Cited by
240References
4Claims
0Family size
Inventors
Key dates
| Filing date | Aug 22, 2000 |
| Grant date | Mar 4, 2003 |
| Priority date | — |
| Expiry date | Aug 22, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86558
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The pressure of breathable gas exiting a flow generator is controlled by adjusting the efficiency of the flow generator. In one embodiment, a baffle plate of a control element can restrict the open entry area of a motor driven turbine of the flow generator. In another embodiment, the degree of opening of the mouth of the flow generator inlet is automatically adjustable in response to the needs of the user, hence creating a pneumatic impedance, and which simultaneously controls, in the same manner, the impedance of the outlet of the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.