Inventors:
Robert Fishman - Boston MA, US
Robert Havener - Lynnfield MA, US
Ihab Abdel Fattah - Andover MA, US
Anas Abdelazim - North Andover MA, US
Scott Newell - Ipswich MA, US
Tom Bishop - Wenham MA, US
Tamer Khayal - North Andover MA, US
Stanley Kyi - Andover MA, US
Ron Taylor - Chester NH, US
Doug Harriott - Melrose MA, US
Matthew De Remer - Allston MA, US
Paul Murray - Groton MA, US
John Sullivan - Groton MA, US
Mark Anderson - Danvers MA, US
Richard Bringham - North Andover MA, US
Michael Van Driel - Mirandola, IT
Waleed Hassanein - North Andover MA, US
Assignee:
TransMedics, Inc. - Andover MA
International Classification:
A01N 1/02
Abstract:
Methods and systems of maintaining, evaluating, and providing therapy to a lung ex vivo. The methods and systems involve positioning the lung in an ex vivo perfusion circuit; circulating a perfusion fluid through the lung, the fluid entering the lung through a pulmonary artery interface and leaving the lung through a left atrial interface; and ventilating the lung by flowing a ventilation gas through a tracheal interface. Maintaining the lung for extended periods involves causing the lung to rebreath a captive volume of air, and reaching an equilibrium state between the perfusion fluid and the ventilation gas. Evaluating the gas exchange capability of the lung involves deoxygenating the perfusion fluid and measuring a time taken to reoxygenate the perfusion fluid by ventilating the lung with an oxygenation gas.