A device history record review could not be performed as the lot number was not provided.Nine infant heel warmer samples were received by the site on (b)(6) 2017.All the samples received were not activated.Site quality engineer (qe) visually checked all the samples for seal issue and all of them met the visual inspection criteria.Qe then activated all the samples and none of them burst or leaked.Given the nature of this complaint, plant has started a more detailed investigation (corrective and preventive action 084).The plant¿s quality system mandates suitable in-process controls to measure seal integrity of representative samples.Currently, samples are being tested for each lot produced of this product at random intervals to best gauge the seal integrity and functional leak testing.All samples pulled from this lot met the predetermined criteria before it was released.It should be noted that the hot packs do not have any type of chemical or gaseous component that would cause the pack to burst and the chemicals used in the product are food grade and non-toxic. capa (b)(4) has been opened to address this issue.As a containment action, plant has 100% inspection at the line to check for any seal issues that might cause burst/leakage prior to packaging of the product.
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