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It was reported that the once the clip delivery system went through the scope and into the colon, the clip just fell off the delivery system without deploying the clip.The customer later reported that the clip fell into the patient and was recovered without any injury or harm.The procedure being performed was a colonoscopy, which was completed successfully with a competitor product.
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This report is being supplemented to provide additional information based on the legal manufacturer's (lm) investigation.A review of the device history record found no deviations that could have caused or contributed to the reported issue.The device was manufactured in march 2021.Based on the results of the investigation, it is likely that the clip was released and fell into the patient¿s body because the slider was pulled before the clip was opened.This required retrieval of the clip from the body.However, the root cause of the reported event could not be determined.Moreover, information regarding the steps to properly release the clip is as follows: 1.When pulling the slider, the operation wire, the hook and the clip arms are linked together, and they are pulled together in the proximal direction.This motion closes the clip arms.2.When the slider is further pulled after closing the clip arms, the protrusions of the clip arms will move to the outside of the clip pipe.Once it happens, the small protrusions of the clip arms will be fixed to the edge of the clip pipe.As a result, the clip cannot be opened or closed.The clip can be opened and closed by operating the slider to a position where the small protrusions of the clip arms do not come out of the clip pipe.3.When the slider is further pulled after the clip does not open or close, the limiter located in the slider breaks with the noise of snapping.(the user recognizes that clipping was completed by hearing the sound.) 4.After the limiter breaks, the joint between the hook and the clip arms will be unhooked by moving the slider forward.As a result, the clip will be released from the product.The event can be detected/prevented by following the instructions for use (ifu) which states: ¿should the slightest irregularity and/or breakage of the parts be suspected, withdraw the instrument from the endoscope immediately according to the steps of ¿withdrawing the instrument from the endoscope¿ on page 10.Otherwise, perforation, bleeding, or mucous membrane damage may result.¿ this supplemental report includes an update to d9 from the initial medwatch.Olympus will continue to monitor field performance for this device.
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