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A sample has been requested and was returned to deroyal industries on 4/12/2023 to be tested.Deroyal reviewed production logs and it was confirmed no similar issues were reported.Work orders, validations, and failure modes and effects analysis (fmea)'s were also reviewed.A complaint to sales ratio was conducted for the hnicu-38 probes and it was found that (b)(4) were sold in the last two years with 3 complaints in that same time period.This comes to a ratio of (b)(4).Root cause: the returned complaint samples were found to have dimensional variations from the dimensions to the design previously purchased from an outside vendor.The following corrective action has been conducted by deroyal: while this dimensional difference was found to be in specification with the verified and validated design, the hnicu-38 mold is being retooled to closer align with the previously purchased hnicu-38 design.Appropriate verification and validation will be completed following the mold update.An inventory check of 53 cases was made and determined to be consistent.All inventory samples, including the returned samples, that were measured were found to have slightly different dimensions than previously purchased hnicu-38 design.This was noted not to be a production error.The design of the deroyal designed product was verified and validated before switching from the purchased product.As part of the design of this product, if a plug were to pull out and stop monitoring temperature, a mitigation is that the infant monitors are set to alarm both visually and auditorily to warn medical professionals that the probe is no longer monitoring the temperature of the infants.Because the design of this product has been validated and this is the only complaint of its type since bringing the manufactured product to the field, it was determined that this issue is not systemic or due a manufacturing error.To more closely align with market expectations of this product, deroyal is updating the mold to be more closely match with the previously purchased version.The receipt of this complaint did not identify a risk that requires new mitigation as it is already mitigated by the alarm process that occurs if temperature is not being monitored for any reason, including a plug being dislodged.Deroyal will continue to monitor for trends for this issue and this product.This investigation is complete at this time.No further information is available at this time.We will provide follow-up report if additional information becomes available.
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