Patent ID: 9586018
Date: 2017-03-07
CPC Classifications: A61B,A61M

Claim:
1. An apparatus configured for selectively delivering oxygen-containing gas to an airway of a patient in either a closed-system positive-pressure ventilation (CSPPV) mode or a breath-synchronized flow-targeted ventilation (BSFTV) mode, said apparatus comprising: a tracheal tube configured to be inserted into the patient's airway and having an inflatable cuff configured to block the patient's airway around the tracheal tube; a ventilator having: (a) a gas source providing a variable delivery of oxygen-containing gas; (b) a processor controlling the gas source; and (c) a hose removably attachable to the tracheal tube configured for delivering the oxygen-containing gas from the gas source through the tracheal tube to the patient in CSPPV mode; an adaptor for removable attachment to the tracheal tube in BSFTV mode, said adaptor having: (a) a cap with a first connector for removable attachment to the ventilator hose, and a second connector for removable attachment to the tracheal tube in BSFTV mode; and (b) an inner cannula extending from the cap that is removably insertable into the tracheal tube to divide the tracheal tube into two lumens, with a first lumen configured for allowing the spontaneously-breathing patient to freely inhale and exhale in open exchange with the atmosphere through the tracheal tube and adaptor; and a sensor monitored by the processor and configured for detecting a physical property of the patient's respiratory cycle in the first lumen; and said processor configured to selectively control the gas source to operate in either: (a) the BSFTV mode, with the adaptor attached to the tracheal tube and ventilator hose, wherein the gas source delivers a flow of oxygen-containing gas through the adaptor cap and the second lumen of the tracheal tube to augment the patient's spontaneous respiration, said delivered flow varying over each inspiratory and expiratory phase of the respiratory cycle in a predetermined non-constant flow waveform synchronized with the respiratory cycle to augment the patient's spontaneous respiration having: said delivered flow allowing the patient to freely inhale and exhale in open exchange with the atmosphere through the first lumen of the tracheal tube and adaptor; and (b) the CSPPV mode, with the ventilator hose attached to the tracheal tube without the adaptor inserted, wherein the gas source delivers oxygen-containing gas through the tracheal tube to provide positive-pressure ventilation to the patient.