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Medtronic Issues Notification Regarding Certain Implantable Defibrillator Models 
Medtronic, Inc. | February 11, 2005
Medtronic, Inc., today said it is voluntarily advising physicians about a potential
battery shorting mechanism that may occur in a subset of implantable cardioverter-defibrillator
(ICD) and cardiac resynchronization therapy defibrillator (CRT-D) models.
In a letter
to physicians, Medtronic reported that nine batteries (0.01 percent, or approximately
1 in 10,000) have experienced rapid battery depletion due to this shorting action. If
shorting occurs, battery depletion can take place within a few hours to a few days, after
which there is loss of device function. There are no reported patient injuries or deaths.
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