A physician reported a disposable perforator id (b)(6) did not stop when the operator drilled again for a deep brain stimulation (dbs).A thicker-than-usual bone pad remained when drilling and the dura was damaged during the procedure requiring a dura suture.The event led to more than 30 minutes surgical delay the patient recovered.A primado2(nakanishi) drill was used with the perforator.According to information provided, it is unknown if the perforator clicked in place in the drill, it is also unknown if the recommended spring tests were performed between each burr hole.
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Updated fields: d4, d9, g3, g6, h2, h3, h4, h6 & h10.The disposable perforator (id 261221) was returned for evaluation.Device history record (dhr) - there is no indication that the production process may have contributed to this complaint.All test results passed procedural specifications.Failure analysis: visual inspection utilizing unaided eye performed.The unit was heavily soiled with organic material and was subjected to eo gas.Spring test attempted.Unit had a frozen i/o drill from significant organic material present.Unit was cleaned and used to drill 5 test holes, and this freed the frozen i/o.Once freed, unit passed the spring test and functioned as designed.Functional test performed.Once freed, the unit successfully drilled an additional 5 holes with no issues and functioned as designed.The complaint condition could not be confirmed.Unit passed all functional tests.Root cause- the root cause remains undetermined.The product was received for analysis and the investigation could not confirm the complaint.The possible root cause per the failure analyst ¿drill allows to be set incorrectly¿ or ¿user misuse¿.
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