Although the rms stent did not malfunction, the patient suffered a metal allergic reaction.The stents' removal can be viewed as intervention.Therefore this event meets the fda mdr criteria of a 'serious injury' report.This complaint is related to a resonance metal stent (rpn unknown) of an unknown lot number.The device has not been returned for evaluation therefore a document based investigation has been carried out.The rpn and/or lot # concerned are unknown therefore a limited investigation was possible.As per the complaint description the physician did not recognize the patient had a metal allergy and placed the resonance stent.On observation of the allergic reaction to the stent materials it was removed from the patient and replaced with a plastic stent.The customer complaint was confirmed based on the customers testimony.As per instructions for use ¿warnings¿ section ¿ ¿use of this device should be based on consideration of risk/benefit factors as they apply to your patient.Informed consent should be obtained to maximize patient compliance with follow up procedures.¿ 'individual variations of interaction between stents and the urinary system are unpredictable.¿ complaints of this nature will continue to be monitored for potential emerging trends.Although the rms stent did not malfunction, the patient suffered a metal allergic reaction.The stents' removal can be viewed as intervention.Therefore this event meets the fda mdr criteria of a 'serious injury' report.This complaint is related to a resonance metal stent (rpn unknown) of an unknown lot number.The device has not been returned for evaluation therefore a document based investigation has been carried out.The rpn and/or lot # concerned are unknown therefore a limited investigation was possible.As per the complaint description the physician did not recognize the patient had a metal allergy and placed the resonance stent.On observation of the allergic reaction to the stent materials it was removed from the patient and replaced with a plastic stent.The customer complaint was confirmed based on the customers testimony.As per instructions for use ¿warnings¿ section ¿ ¿use of this device should be based on consideration of risk/benefit factors as they apply to your patient.Informed consent should be obtained to maximize patient compliance with follow up procedures.¿ 'individual variations of interaction between stents and the urinary system are unpredictable.¿ complaints of this nature will continue to be monitored for potential emerging trends.
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Since the physician did not recognize the patient has metal allergy, he placed resonance stent.However, allergic reaction was observed.So, the stent was removed from the patient's body, and plastic stent was placed instead.No adverse effect to the patient.Additional information was provided form the sales rep after the interview to the physician.There was no information that the patient has a metal allergy when the physician placed the device into the patient.(one of the family member of the patient has metal allergy.) the physician commented that the relation between the allergy symptom and resonance stent is unknown.
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