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It was reported that during a da vinci assisted surgical procedure, the customer contacted the technical support engineer (tse) and reported that the left hand controller clutch was not functioning correctly.A system message was displayed indicating that the clutch on the hand control was unavailable and that the foot pedal should be used as a workaround.Upon reviewing the system logs, error 23152 was identified, which indicated that the master tool manipulator (mtm)clutch button hall effect sensor was operating outside the safety envelope limit.The procedure was completing as planned with no reported injury.
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An intuitive surgical, inc.(isi) field service engineer (fse) was dispatched to the customer site to further investigate the reported event.The fse replaced the master tool manipulator (mtm) to correct the issue.The system was tested and verified as ready for use.Isi did receive the product involved with this complaint and performed the failure analysis.This mtm was analyzed and the reported complaint of master controller error was confirmed, but was not replicated during in house testing.In lighthouse, the errors 23152 ,23007 on grip axis were found, confirming the fault occurred in the field.Upon visual inspection, no issues were found that would be related to the reported event.The mtm was installed on an in house system and driven with an in house instrument.No issues were observed and the unit passed system test.No issues with the clutch buttons were observed.After installing on surgeon console fixture test platform (sftp) and running the fitness test, the mtm failed verify encoder cal wp, wy, ro and grip, gravity balance test post sine cycle sh(max imbalance), el (min margin, max imbalance).After running calibrations, the mentioned tests passed.
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