(b)(4).The sample was returned by the customer and forwarded to salter labs for evaluation.The investigation received by salter labs is as follows: "evidence of mek bonding material was found.Additionally a dhr review was conducted regarding the p/n and lot number identified in the complaints.No issues or finding were reported and the product met all applicable testing requirements.While we were not able to determine a specific cause for the bond failure, please be advised that salter has long used several in-process manufacturing controls to assure the quality and strength of our cannula bonds.This includes, but is not limited to, extensive operator training, custom fixtures to control solvent dipping length, and routine sample testing of bond strengths throughout each shift, utilizing both non-destructive and destructive test methods.Additionally, salter labs monitors complaints for issue or event trends.While this complaint has been entered into our complaint database and trending software, a trend for bond disconnections based on the number of units sold has not yet been identified.Salter labs will continue to be monitored complaint trends." other remarks: a conclusion code was not found as the complaint was confirmed; however, a root cause could not be identified.
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