Manufacturers ref# (b)(4).Similar to device under pma/510(k): k171712.Summary of investigational findings: the investigation is based on the event description and the returned device.Only the femoral introducer was returned for investigation.Approx.13.4cm of the distal end was found slightly curved and the red safety button was pressed, ie the system was unlocked.The femoral cup stuck inside the introducer with hardened contrast/blood, but after dissolving it in water, the cup moved freely and the release mechanism worked as intended and was found according to specifications.During manufacturing processes there are adequate controls in place to ensure correct placement of the spring as well as correct position of the safety button and the release button in the handle.Therefore, the exact reason for the difficulties encountered cannot be determined, but since the release button was pressed and since reported that "the filter might be pre-released, so it was hard to move back the sheath when he wanted to release it", it is assumed that the filter unintendedly released from the unlocked introducer inside the sheath and that the hooks of the released primary filter legs caused the difficulties encountered when attempting to pull back the sheath.However, based on the information provided and since only the femoral introducer was returned, it is assumed that the filter was placed in the correct position without any adverse effects to the patient.The device history record was reviewed with no evidence to suggest that the device was not manufactured according to specifications.Cook medical will continue to monitor for similar events.
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Description of event according to initial reporter: the red security button has been pressed before the filter is released.Additional information received 11jan2020: "the device was used on the patient, but i have confirmed with the doctor when the event happened.The doctor confirmed he didn¿t depress the red safety button before he wanted to release the filter.He thought it¿s hard to move back the sheath, checked the device then he saw the red safety button was depressed".Patient outcome: the patient did not require any additional procedures due to this occurrence.The complainant did not report any adverse effects on the patient due to this occurrence.
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