A sample was received to perform an investigation.Visual inspection found that the luer lock connector was separated from filter body.Each flat filter has retention ring which is designed to hold luer lock connected with filter.Retention ring and luer lock connector on the sample were found to be without any damage.Retention ring and luer lock hole diameters were measured under camera system.It was found that retention ring was slightly undersized and luer lock hole diameter was within specification.Undersized retention ring might cause reported luer lock connector detachment without using of excessive force.A device history review (dhr) could not be performed as the lot number was unknown.Due to this finding, supplier corrective action request (scar) was issued against the supplier.No product information has been provided to date.This remediation mdr was generated under protocol (b)(4), as a result of warning letter cms# (b)(4).
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