(b)(4).Device analysis: the product was returned to ethicon endo surgery for evaluation.Visual inspection and functional testing were conducted on the returned device.Visual analysis of the returned sample determined that pxw35 device was returned nonfunctional.Further analysis shows that lifter and lifter spring were loose of cartridge.No functional test was performed due to the condition of the device.No conclusion could be reached as to how the cartridge became damaged.It should be noted that as part of our quality process all devices are manufactured, inspected, and released to approved specifications.Although no conclusion could be reach on the cause of the reported event, the instructions for use contain the following caution: with two tissue forceps, pick up each wound edge individually and approximate the edges.Or, with one tissue forcep, pull skin edges together until edges evert.Or, apply tension to either end of the incision, such that the tissue edges begin to approximate themselves.One forcep can be used to ensure that the edges are everted.Position the instrument over the everted skin edges, aligning the instrument arrow with the center of the incision at a 50° - 60° angle from the skin.Squeeze the trigger until you touch plastic trigger to plastic handle (plastic to plastic), then release the trigger and move the instrument off the incision.Manufacturing records could not be completed as the lot number was not provided.
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