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The hmbl-4-tri device of lot number cf1643730 involved in this complaint was not returned for evaluation.With the information provided, a document based investigation was conducted.The complaint file (pr (b)(4)) was opened to capture the negative feedback mentioned in the complaint of "user felt that the banding was not as tight as the past".The bands not constricting sufficiently to capture the hemorrhoid will be covered by complaint file pr (b)(4).There was a second device used in the procedure of the same lot number cf1643730 and while it did function as intended, the user confirmed the negative feedback ""user felt that the banding was not as tight as the past" also applied to this second device.Both negative feedback comments will be covered in this complaint file (pr (b)(4)).Prior to distribution hmbl-4-tri devices are subjected to a visual inspection and functional checks to ensure device integrity.These inspections and functional checks are outlined in internal procedures in place at cirl.A review of the manufacturing records for hmbl-4-tri of lot number cf1643730 did not reveal any discrepancies that could have contributed to this complaint issue.A review of relevant manufacturing records, was not completed as no failure mode can be assigned to this complaint, it has been deemed to be negative feedback.Based on the information available to date, there is no evidence to suggest that there are any manufacturing issues associated with lot number cf1643730.As per the instructions for use, users are advised of the following: "if the package is opened or damaged when received, do not use.Visually inspect with particular attention to joints, cracks or breaks.If an abnormality is detected that would prohibit proper working condition, do not use.¿ the ifu states that ¿ maintain suction of haemorrhoid by keeping suction port covered.Deploy band by slowly rotating suction spool downwards until tension is released.¿ ¿uncover suction port of ligator to relieve suction on haemorrhoid.This will allow ligated haemorrhoid to be released from tip of device.¿ there is no evidence to suggest that the customer did not follow the instructions for use.A definitive root cause could not be determined from the available information.This complaint has been deemed to be negative feedback, as while the second device did function as intended, the user confirmed the negative feedback ""user felt that the banding was not as tight as the past" also applied to this second device.Both negative feedback comments will be covered in this complaint file.Customer complaint is confirmed based on customer testimony.According to the information reported, the patient did not experience any adverse effects due to this occurrence.Complaints of this nature will continue to be monitored for emerging trends.
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