The following were reviewed as part of this investigation: patient severity, frequency analysis, applicable previous investigation(s), sample (if available), applicable fmea documents, labeling, and applicable manufacture records.Based on a review of this information, the following was concluded: the complaint of a damaged introducer sheath is confirmed and was determined to be use related.One 4.5 fr microintroducer/dilator assembly was returned for evaluation.An initial visual observation showed use residue on and within the sample.The distal portion of the dilator shaft was observed to be slightly curved.Ridges were observed in the material of the introducer sheath and the distal tip of sheath was observed to be damaged.A microscopic observation revealed the tip of the introducer sheath was damaged on one side and appeared to have been pulled and crumpled inward.Some wrinkling of the material was observed next to the two observed ridges and just proximal to the damage observed in the distal tip of the sheath.The characteristics of the damage observed on the returned introducer sheath are typical of damage caused by difficulty advancing an introducer/dilator into a vessel, which can result from too small of an incision, a steep insertion angle, and/or excessive insertion force.The product ifu states: ¿advance the small sheath and dilator together as a unit over the guidewire, using a slight rotational motion.If necessary, a small incision may be made adjacent to the guidewire to facilitate insertion of the sheath and dilator.¿ an examination of the returned sample revealed no potential damage/defect related to manufacture of the product.A lot history review (lhr) of recx3549 showed no other similar product complaint(s) from this lot number.
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