Editing Wilson Greatbatch (section)

== The Chardack-Greatbatch pacemaker ==

The ''Chardack-Greatbatch'' pacemaker used Mallory mercuric oxide-zinc cells ([[mercury battery]]) for its energy source, driving a two transistor, transformer coupled [[blocking oscillator]] circuit, all encapsulated in [[epoxy]] resin, then coupled to electrodes placed into the [[myocardium]] of the patient's heart.  This [[patented]] innovation led to the [[Medtronic]] company of [[Minneapolis]] commencing manufacture and further development of [[artificial cardiac pacemaker]]s.<ref>[http://www.magnet.fsu.edu/education/tutorials/museum/pacemaker.html National High Magnetic Field Laboratory]</ref>