|
An investigation was completed to determine the cause of this reported event.Intuitive surgical, inc.(isi) did receive a da vinci product to perform failure analysis.The round tip scissors instrument was analyzed and found to have a frayed pitch cable at the proximal clevis hub.Some filaments of the cable were frayed, but the cable was not fully broken.The frayed cable strands stuck out at the wrist.There was no evidence of discoloration or corrosion/contamination on the cables to indicate a reprocessing-induced issue.Further inspection found no abnormally sharp or damaged components that could have contributed to the cable breaking.When pitch cable breakage occurs, the instrument is immediately inoperable due to loss of functionality.The instrument has tungsten drive cables to transmit motion from the input discs in the housing, through the main shaft, and to the distal instrument tip.These cables are exposed at the instrument tip and control movements at the wrist.The complaint was confirmed by failure analysis.
|