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As reported by the field clinical specialist (fcs), during a transfemoral transcatheter aortic valve replacement (tavr) procedure using a 29 mm sapien 3 valve, the 29 mm commander delivery system balloon ruptured "vertically" towards the end of valve deployment due to sinotubular junction (stj) calcium.The delivery system was able to be removed from the patient without any issues.A second 29 mm commander delivery system was prepped and used to post-dilate the valve with the same amount of volume with an additional 2 cc to ensure the valve was fully deployed.It was noted that the balloon was lined up lower in the valve for the post-dilation.The patient was stable.There was no patient injury.
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A supplemental report is being submitted for correction and to include additional information from the investigation.The following sections of this report have been corrected/updated: h6 (type of investigation, investigation findings, investigation conclusions) and h11 (additional narrative/data).The event reported is anticipated in the risk management documentation for transcatheter heart valve procedures.A previous investigation into this type of event is captured in an edwards lifesciences technical summary and applies to this complaint.Additional assessment of the failure mode is not required at this time.The device was not returned for evaluation as it was discarded.Due to the unavailability of the device, no visual inspection, functional testing, or dimensional analysis could be performed.There was imagery received for evaluation.Per imaging evaluation, calcification was present at the sinotublar junction (stj) and landing zone.Per the technical summary, the instructions for use (ifu), training manuals and current risk mitigations have been reviewed.No inadequacies have been identified with regards to warnings, contraindications, and the directions/conditions for the successful use of the device.Through extensive complaint investigations, balloon burst events during valve deployment have not been associated with device malfunctions or manufacturing nonconformances.Rather, the root cause for these events has historically been due to calcification in the landing zone or over-inflation of the balloon.The complaint for balloon burst has been confirmed based on the information available to date.Any updates or additional findings will be submitted in accordance with fda reporting requirements.In this case, the available information suggests patient factors (calcification) likely contributed to the event as the provided imagery revealed the presence of calcification in the patient's anatomy.The presence of calcification can create a challenging anatomy for balloon inflation.While the balloons are sufficiently designed and tested to ensure the burst pressure is at or above the rated burst pressure, calcified nodules can compromise the structure of the balloon wall via the following mechanisms such as puncture, local overstretching, open cell impingement, or stress concentration.Complaint histories for all reported events are reviewed against trending control limits on a monthly basis, and any excursions above the control limits are assessed and documented as part of this monthly review.Since no edwards product defects or labeling deficiencies were identified, no corrective or preventative action is required.
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