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Intuitive surgical, inc.(isi) did receive a da vinci product to perform failure analysis.The maryland bipolar forceps instrument was analyzed and found to have a cracked grip input disk.The input disk controlling the rolling of the instrument appears cracked.The crack was seen on one side of the input disk.The crack on the input disk likely caused imprecise motion during functional testing.A visual inspection was performed and found no external damage to the instrument¿s main tube or distal end.The instrument was found to have failed functional testing with imprecise motion.The imprecise motion was likely caused by the crack found on the grip's input disk.The instrument was installed on an in-house system and driven and passed the recognition and engagement tests.The instrument exhibited imprecise motion during the roll motion.The instrument was found to have corroded pulley cables.When the housing of the instrument was opened up, the pulley cables exhibited white substance.The white substance is indicative of corrosion.If the input disk is fully broken, then the instrument can fail to engage.The issue is immediately detectable by the surgeon due to loss of instrument functionality.The complaint was confirmed by failure analysis.The probable root cause is attributed to use and reprocessing conditions.The input disk can be susceptible to chemical or thermal stresses, which can result in the appearance of cracks in the ultem or peek material.Under repeated or prolonged chemical or thermal exposure cycles, these cracks can propagate into larger cracks and may cause the input disk to break and separate from the instrument.The probable root cause is attributed to improper cleaning or sterilization techniques used in reprocessing, which may include prolonged exposure of the instrument to harsh cleaning agents or insufficient flushing.
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