Patent ID: 8794234
Filing Date: 2014-08-05
Classification: A61M

Abstract:
1. A ventilator, comprising: a pneumatic system for providing and receiving breathing gas; a controller operatively coupled with the pneumatic system; and an operator interface, where the controller is operable to: execute a control scheme to command the pneumatic system to provide breathing gas to a patient during inspiration, where such breathing gas is provided in response to the ventilator detecting that the patient is attempting to initiate inspiration; and command delivery of a feed-forward input of additional breathing gas corresponding to a desired boost pressure waveform to the patient during inspiration, where the feed-forward input is commanded in response to operator selection of at least one of a ventilator parameter and a patient parameter at the operator interface, and where the desired boost pressure waveform is continuously modeled based on performance measurements of the control scheme by adjusting a gain and at least one of an amount of time required to deliver a maximum flow and an exponential decay trajectory time constant.