Qn#(b)(4).Device evaluation: the reported complaint of sheath pulled back from the dilator at insertion was confirmed.The customer returned one peel-away sheath/ dilator assembly.The assembly appeared typical except for the damaged sheath tip.Microscopic examination revealed that the sheath tip edge is pushed back about 1.0mm and is accordion to 2.0mm.Microscopic examination of the dilator revealed that the tip was also damaged and the body was bend approximately 3 cm from the tip.The tip was pushed back slightly along half of the tip edge.The sheath measured 2.76" in length which meets specification per sheath graphic (length: 2.625 -2.875").The sheath tip inside diameter (id) could not be accurately measured due to the tip damage.The dilator protruded through the sheath tip 0.0866" which meets the specification of 0.625- 1.125" in the assembly graphic.The dilator outside diameter was specified at 0.071- 0.075" per extrusion graphic.The inside diameter of the tip was specified at 0.020-0.022" per dilator graphic.The dilator outside diameter measured 0.0715" which meets the od specification and the other remarks: inside tip diameter could not be measured due to the tip damage.However, a 0.018" pin gage was passed through the dilator without resistance.The ifu for this product provided insertion techniques for the sheath/ dilator assembly.The customer did not report their insertion technique.A device history record review was performed and did not reveal any manufacturing related issues.Based on the reported information, the time of discovery and the condition of the sample operational context caused or contributed to this event.No further action will be taken.
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