Breathing aid apparatus in particular for treating sleep apnoea
US6283119A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 14, 1997 |
| Grant date | Sep 4, 2001 |
| Priority date | — |
| Expiry date | Apr 14, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2016/0039
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A compressor driven by a motor sends to a nasal mask a breathable gas at a low positive relative pressure whereby the motor is controlled to maintain the pressure in the delivery pipe of the compressor substantially equal to a set point, independently of the inspiration and expiration of the patient, a computer receiving on an input a motor speed signal as a parameter representative of the respiratory activity of the patient and analyzing the motor speed variations whereby the computer will increase the pressure set point if necessary or reduces the pressure set point by a predetermined amount depending upon whether there is a hypopnoea or the absence thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.