|
Manufacturer's investigation conclusion: evaluation of the returned coring tool and submitted photographs confirmed damage to the guide pin and helix; however, a specific cause for this damage could not be conclusively determined through this evaluation.The coring tool was returned in used condition.Residue consistent with blood was present on the ends of the guide pin and helix.Visual inspection revealed that the guide pin was bent and protruding through the end of the helix coil.The helix coil was also observed to be slightly bent in the same direction as the center pin.Under magnification, the edge of the cutting blade appeared unremarkable.The locking tabs on the rear of the tool appeared to function as intended.The submitted photographs captured residue consistent with blood on the tool handle and blade body.Additionally, the photos captured the helix coil bent in a different direction than the guide pin.This direction of bending did not appear to be consistent with the returned state of the product, suggesting that additional bending occurred after the submitted photographs were taken.Review of the manufacturing documentation, which includes inspecting the tool for damage, found no deviations from manufacturing or quality assurance specifications.This evaluation could not conclusively determine when or how the guide pin and helix initially became bent.The heartmate 3 lvas instructions for use (ifu), rev.B, is currently available.Section 5 of the ifu, "surgical procedures", provides instructions on all surgical procedures, including preparing the ventricular apex site and inserting the pump in the ventricle.The heartmate 3 coring tool ifu, rev.G, contains information needed to properly and safely use the heartmate 3 coring tool to core the left ventricle and remove cored tissue.The ifu instructs the user to notify appropriate abbott medical personnel if there is a change in how the device works, sounds, or feels.The ifu also states to ensure that that the coring tool is not damaged prior to use.The relevant sections of the device history records for heartmate 3 coring tool, lot number 10588934, were reviewed and showed no deviations from manufacturing or quality assurance specification.The coring tool lot passed all inspection steps, including inspection steps in place for identifying a bent pin or helix.No further information was provided.The manufacturer is closing the file on this event.
|