Signedstamped near bell in green: 35/25 / PYREX / USA
Inscribedstamped in green above opaque connector: 40/50
FunctionA forerunner of the modern heart pump, the perfusion pump maintained the circulation of fluid through disembodied organs. Physiologists could therefore keep organs functioning outside the body in order to study them in a living state or try to repair them.
ProvenanceGift from John P. Nicholson.