Patent ID: 9016277
Filing Date: 2015-04-28
Classification: A61M

Abstract:
1. Compressed air control device for a CPAP device comprising: a pressure detection device for detecting a pressure curve of the pressure in a hollow body of the CPAP device and for producing a corresponding pressure signal; a pressure curve evaluation means for evaluating the detected pressure curve of the pressure in accordance with at least one predetermined criterion and for producing a pressure modulation control signal on the basis of the result of the evaluation; and a pressure modulation device for receiving a substantially constant compressed air stream and for outputting a modulated compressed air stream to the CPAP device, which pressure modulation device is formed in such a way that it modulates a pressure of the compressed air stream output to the CPAP device in response to the pressure modulation control signal; wherein the pressure curve evaluation means is formed in such a way that it detects an apnoeic phase during the evaluation and, in response to a detection of this type, outputs to the pressure modulation device a pressure modulation control signal to trigger a pressure pulse in the modulated compressed air stream; wherein the pressure curve evaluation means for recognising an apnoeic phase detects whether the pressure is substantially constant for a predetermined period, the predetermined period preferably being in the range from 2 to 5 s; wherein the pressure curve evaluation means is formed in such a way that it detects natural breathing reflexes during the evaluation and, in response to a detection of this type, outputs to the pressure modulation device a pressure modulation control signal to trigger a pressure pulse in the modulated compressed air stream, which pulse is correlated with the natural breathing reflex; and wherein the pressure pulses are synchronised with natural breathing reflexes.