(b)(4).Manufacturing site evaluation: the tip of the carbide metal insert of the received device is broken off.The instrument was analyzed with the digital microscope (b)(4) by keyence.Hardness was tested with hardness tester vickers hv 5, ident no.30077.Carbide metal - target:1150 +-50 hv , actual: 1180 hv.Basic material - target: 420 +110 hv , actual: 505 hv.The hardness is according to the specifications.It is assumed that the user tried to grasp a needle with the tips of the needle holder as the needle slipped and caused the breakage; however this is not confirmed.The damage is likely user related.Corrective / preventive action(s) is not required.
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