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(b)(4).Date sent to the fda: 08/09/2019.H3 device evaluation summary: the device component was identified as product code z341h was received for evaluation.A fracture was observed in the body of sample a.The needle was received in two pieces, only one of the mating fracture surface was examined for this evaluation.A scanning electron microscope (sem) was used to examine the fracture surfaces and surrounding area of the needles.The fracture surface was examined in multiple locations in order to determine the fracture mode.The evaluation of (b)(4) revealed the fractures were composed of microvoid coalescence, which is evidence of a ductile overload failure.Mechanical damage, a cup-and-cone shaped fractures and macroscopic plastic deformation observed coincidental to the fracture provide additional evidence that the failure was induced by mechanical deformation leading to ductile overload.This was a ductile fracture.The manufacturing records were reviewed, and the manufacturing/ packaging criteria were met prior to the release of this batch.The evidence of this examination indicates that the breakage occurred from mechanical deformation, indents and scratches, due to gripping, bending and overstressing of the needle. there is no evidence of any material flaw that would cause premature failure.Second device, sample b reported under mw 2210968-2019-83534.
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