SYSTEM FOR PROVIDING FLOW-TARGETED VENTILATION SYNCHRONIZED TO A PATIENT'S BREATHING CYCLE

摘要

A system selectively delivers either breath-synchronized, flow-targeted ventilation (BSFTV) or closed-system positive pressure ventilation (CSPPV) to augment respiration of a patient (10) with a standard tracheal tube (80). A removable adaptor (70) has a cap that can be removably attached to the proximal connector (86) of the tracheal tube (80) in BSFTV mode, and an inner cannula (73) that extends within the tracheal tube (80) to effectively divide it into two lumens. The adaptor (70) includes a ventilator connector (71 ) for removably engaging a ventilator hose (28) to deliver air/oxygen through the adaptor (70) and one lumen of the tracheal tube (80) with a flow rate varying over each respiratory cycle in a predetermined waveform synchronized with the patient's respiratory cycle to augment the patient's spontaneous respiration. The adaptor (70) also includes a port (74) allowing the spontaneously-breathing patient (10) to freely inhale and exhale in open exchange with the atmosphere through the other lumen.