It was reported that, during a tka surgery, the handpiece did not home.When checked the bur, drill, and handpiece, the situation could not be changed.After exchanging handpieces, there was not any problem with homing.The handpiece was tested and it showed a torque value of 58.Surgery was delayed, but it is unknown for how long.The patient was not harmed.
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The device was used during treatment and was returned for a prior investigation.The functional inspection of the returned handpiece found that after autoclaving and cooling down, the handpiece motor required higher than normal torque to move.This is indicative of a motor issue.The dhr was reviewed and the reported product met manufacturing specifications prior to be released for distribution.A complaint history review found similar complaints of the reported issues.The relationship of the device and the reported event has been established.Typically, we have seen that the motor will break free and become operable after a second or third characterization test.The root cause of the reported event was due to mechanical component failure.
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