H3, h6: we have now concluded our investigation for the complaint received.A review of the batch manufacturing records could not be performed as no lot number was provided, however, there are no indications to suggest that the device did not meet specifications upon release into distribution.A complaint history review found further instances of the reported event.The device, used for treatment, was returned for evaluation.An initial visual inspection did not identify any issues.When batteries were inserted the pump functioned without issue.Device performance data did not detect any system errors or faults with the pump.The pump monitors the level of air leaks into the dressing.If there is an air leak anywhere in the dressing, the pump will make several attempts to regain negative pressure (vacuum) over a period of time (this could result in a louder than normal buzzing with ok light still flashing).If it deems that the leak is too high (i.E.It will have to work too hard to maintain the vacuum), it pauses therapy and indicates the leak to the user so that it can be rectified.We have not been able to confirm a relationship between the event and the device.The investigation has been closed as ¿no device problem found¿.No further actions by smith and nephew are deemed necessary at this stage.However, we will continue to monitor for any adverse trends relating to this product range.Smith and nephew acknowledge customer concern and are continually investigating ways to develop and improve our products.
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