During turnover of the operating room, the battery pack of the used zimmer pulse a vac exploded.The battery pack then smoked and became very hot to the touch.The battery pack was brought to the main or desk after the incident.About a minute after it had been left at the desk, the pack made a noise like a firecracker and a fine black powder was expelled from the battery in an 18 inch radius.The pack was removed from the front desk until it was cool and then sequestered to be examined by clinical engineering.It was reported by the staff in the operating room that the wiring had been cut from the pack prior to it exploding.
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