It was reported that the procedure was to treat a moderately calcified, non tortuous, 50% stenosed lesion in the right common iliac artery.Angioplasty was performed and then the physician decided to stent the lesion.A non-abbott introducer sheath was in place and it was planned to just advance the 9.0x59 mm omnilink elite stent delivery system (sds); however, the sds got stuck.The omnilink elite sds was able to be pulled out with force and a non-abbott stent was placed without issue.There were no adverse patient effects and there was no clinically significant delay in the procedure.No additional information was provided.
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A visual, functional, and dimensional inspection was performed on the returned device.The reported difficult to advance and difficult to remove were confirmed.A review of the lot history record identified no manufacturing nonconformities issued to the reported lot that would have contributed to this event.Additionally, a review of the complaint history did not indicate a lot specific quality issue.It was reported that the omnilink elite sds became stuck and was pulled out with force.It should be noted that the omnilink elite instructions for use, states: should unusual resistance be felt at any time during either lesion access or removal of the delivery system post-stent implantation, the entire system should be removed as a single unit.Applying excessive force to the stent delivery system can potentially result in loss or damage to the stent and delivery system components.It is unknown if the ifu deviation directly caused or contributed to the reported event.The investigation was unable to determine a conclusive cause for the reported difficult to advance and difficult to remove.Factors which may contribute to difficulty advancing and removing the device in the introducer sheath include, but are not limited to, damage to the stent, damage to the guiding catheter, guiding catheter size selection or procedural technique (devices not properly supported or coaxially aligned).In this case, it may be possible that the inner diameter of the introducer sheath was smaller than the recommended diameter of 0.085 inches (2.15 mm) indicated on the omnilink elite product label.It should be noted that there is no specific industry definition of 6f guide catheter dimensions or what it means to have a product that is 6f compatible.The only guidance the sheath producers have is to make the inner diameter larger than 2.00mm and smaller than 2.33mm.This contrasts with the convention for guiding catheters that have a clear definition of a maximum outer diameter of 2.0mm.The lack of clear industry guidance may be a contributing factor to why there is a broad range of inner diameters found in commercial introducer sheaths.There is no indication of a product quality issue with respect to manufacture, design, or labeling.
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