B)(4).Investigation summary = > the complaint states: ¿customer reports that the cement gun is defective.¿ 2 guns were returned for investigation, pre-marked by the hospital with ¿3¿ and ¿4¿.Both guns have failed in the same manner ¿ the trigger spring has sheared into 2 and can no longer activate when squeezed/ released (b)(4)).The samples received confirm the complaint description.The lot identification details from the complaint samples confirm that the guns were manufactured in 2012 and have therefore been available for use for over 6 years.The root cause for the failure in this case is wear and tear.No information received with this individual complaint indicated that a broader investigation or corrective action was necessary the number of complaints received for this failure mode will continue to be monitored and product updates/ recommendations will be implemented at the post market surveillance review dependent upon occurrence ratings.Depuy synthes considers the investigation closed at this time.Should additional information be received, the information will be reviewed and the investigation may be re-opened as required.Device history lot = > device history reviewed: device history cannot be reviewed as product is manufactured externally.If information is obtained that was not available for the initial medwatch, a follow-up medwatch, a follow-up medwatch will be filed as appropriate.
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