The Heartmate II: design and development of a fully sealed axial flow left ventricular assist system.
Our group is developing the control and power transmission components required to implement a permanent and fully sealed left ventricular assist system (LVAS). Starting with the percutaneously powered HeartMate II blood pump, our development efforts are focused in the following areas: a complete redesign of the transcutaneous energy transmission system (TETS) to include a rectification network and autonomous voltage regulation within the secondary coil, a hermetically sealed electronics package containing a miniaturized implementation of the existing redundant drive and control electronics with several power-input options, an implanted rechargeable lithium ion battery pack capable of providing up to 1 h of untethered operation, implantable electrical connectors that allow components to be connected after placement in the body or to be replaced if needed, and a radio telemetry subsystem to transmit diagnostic information and to permit remote adjustment of selected parameters.
Burke
D J
DJ
Thermo Cardiosystems Inc. (now Thoratec Corp.), Woburn, Massachusetts, USA. david.burke@thoratec.com
Burke
E
E
Parsaie
F
F
Poirier
V
V
Butler
K
K
Thomas
D
D
Taylor
L
L
Maher
T
T
D011211:Electric Power Supplies; D006353:Heart-Assist Devices; D006801:Humans; D011474:Prosthesis Design; D013686:Telemetry