The affected device was not returned for evaluation.The customer was not able to provide the actual lot number of the affected device.The lot number that was provided was from a comparable product.This comparable product was approximately 2 years old.Storage conditions for an extended period like 2 years can contribute to loss of inflation.This mask is equipped with a tail valve for quick and easy re-inflation with a syringe should more inflation be needed.There is no indication that this action was taken.Based on the information provide there is no way to know if the mask was deflated because of a defect such as a hole or tear or if there was a general loss of inflation for other reasons such as storage conditions.
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