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A Novel Electromechanical Drive for a Tether‐Free Implantable Ventricular Assist Device
Author(s) -
Feldman Louis W.,
Harris Russell L.,
Noon George P.
Publication year - 1993
Publication title -
artificial organs
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.684
H-Index - 76
eISSN - 1525-1594
pISSN - 0160-564X
DOI - 10.1111/j.1525-1594.1993.tb00426.x
Subject(s) - servomotor , ventricle , microprocessor , computer science , automotive engineering , engineering , electrical engineering , mechanical engineering , medicine , cardiology
A tether‐free ventricular assist device (VAD) based on a novel electromechanical drive was prototyped and evaluated. The unit can be adapted for implantation. The device utilizes a bladder‐type ventricle taken from a pneumatically driven VAD. In mock loop testing, the unit has met the design capacity of 6 L/min against a pressure head of 150 mm Hg. The efficiency of the device allows it to operate at design flow and pressure for periods of up to 8 h when powered by a single rechargeable battery pack weighing less than 5 kg. The mechanism consists of a seamless sac‐type bladder situated between hinged plates actuated by a motor‐driven bell‐and‐crank linkage. Cycle parameters are controlled by a microprocessor‐based servomotor drive.