Respirating gas supply method and apparatus therefor

Details Respirating gas supply method and apparatus therefor Respirating gas supply method and apparatus therefor

A - Human Necessities

61

M

341/38.5

A61M 15/00 (2006.01) A61M 16/00 (2006.01) A61N 1/36 (2006.01) A61M 16/06 (2006.01)

Patent

CA 1231416

RESPIRATING GAS SUPPLY METHOD AND APPARATUS THEREFOR ABSTRACT In various embodiments of a respirating gas supply method and apparatus a control circuit (32) responsive to a sensor (28) operates valve means (26) to supply pulses of respirating gas through a single hose cannula (48) to an in vivo respiratory system when negative pressure indicative of inspiration is sensed by the sensor (28). The control circuit (32) operates the valve (26) to communicate the in vivo respiratory system with a supply of gas (20) only if the negative pressure sensed by the sensor (28) does not occur within a predetermined yet selectively variable required minimum delay interval between successive pulsed applications of gas to the in vivo respiratory system. The pulse of gas applied to the in vivo respiratory system can be spiked pulses or square pulses. Humidifiers, nebulizers, and sources of a second gas are provided in accordance with various embodiments. Upon the detection of an appropriate apnea event, respirating gas supply apparatus according to various embodiments supply stimulus to the upper airway passages of an in vivo respiratory system in an effort to dislodge any occlusion or obstruction in the upper airway passages. In one embodiment the stimulus applied is a high pressure pulse of gas. In another embodiment an electrical signal is applied to an electromyographic electrode (270) positioned in proximity to a nerve controlling a muscle or organ which may obstruct the upper airway passge.

442491

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