A facility reported that the codman disposable perforator was used for deep brain stimulation and did not stop spinning once it drilled past the bone.The perforator bit tore the dura and penetrated the brain matter.A medtronic pneumatic drill was used.The recommended spring tests were not performed between each burr hole.The procedure was completed using the standard process with a new drill and drill bit.The tear was repaired, and minimal blood loss was experienced.A csf leak was reported that may or may not be related to this incident, no surgical intervention has been taken to address the csf leak.A surgical delay of approximately 30 minutes was reported.
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Perforator was returned for evaluation: dhr - there is no indication that the production process may have contributed to this complaint.Failure analysis - the perforator unit was inspected using the unaided eye.Unit was slightly soiled from surgery; no other anomalies were observed.Ifu testing was performed with no observed anomalies.Testing included: applying adequate pressure on the perforator point, ensuring engagement occurs as the hudson end is rotated.Placing thumb pressure on the perforator point to ensure a smooth, positive spring action when engagement occurs, ensuring the hudson end rotates smoothly within the perforator body when the unit is in the disengaged position.Functional testing was performed using the same protocol it underwent at finished goods testing prior to release.The unit was found to perform as intended and fulfilled the acceptance criteria.In conclusion, the returned unit was found to work as intended, and met all acceptance criteria.The complaint could not be verified through failure analysis.The root cause is undetermined and was unable to be confirmed in the complaint evaluation.
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