(b)(4).The referenced tracheostomy tube was reported to have a "cuff won't inflate" issue.The referenced device was received for further evaluation.An inflation/deflation test was performed using a syringe.The tube's cuff was inflated with 25cc's of air.The cuff was observed to immediately deflate.Visual inspection of the device showed two small tears on the cuff.The reported event was confirmed.No lot number was provided to conduct a device history review (dhr) however a review of manufacturing process and work instructions the following facts were concluded: all manufacturing controls were found acceptable and effective to detect the reported failure mode.Inflation tests are performed for all taperguard products.The operator inspects all products for no leaks and segregates the defective parts.All taperguard products have a resting time of two hours.Deflation tests are also performed for all taperguard products.The operator again inspects for no leaks and segregates the defective parts.Once the parts are visually inspected, all cuffs are deflated.Tears of this magnitude, at the time of manufacturing, would have been detected during the 100% inflate/deflate test and removed from the lot.The tear condition found in the received sample was not confirmed as related to manufacturing process.
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