Breathing aid apparatus particularly for treating sleep apnoea

Details Breathing aid apparatus particularly for treating sleep apnoea Breathing aid apparatus particularly for treating sleep apnoea

A - Human Necessities

61

M

A61M 16/00 (2006.01)

Patent

CA 2138132

A compressor (1) driven by motor (3) sends to a nasal mask (4) a breathable gas at a low positive relative pressure. The motor (3) is controlled in order to maintain the pressure in the delivery pipe (2) of the compressor (1) substantially equal to a set point (P c), independently of the inspiration and expiration of the patient. A computer (16) receives on an input (14) a motor speed signal (3) as a parameter representative of the respiratory activity of the patient. When the analysis of the motor speed variations reveals a hypopnoea, the computer increases the pressure set point (P c). When the analysis of the motor speed variations reveals an absence of hypopnoea during a predetermined period of time, the computer reduces the pressure set point (P c) by a predetermined amount. Utilization in order to optimize the pressure applied to the patient while taking into account the different phases of sleep, the evolution of the disease, etc.

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