| Model Number |
ENVEOR-N-US |
| Medical Device Problem Codes |
Malposition of Device (2616); Positioning Problem (3009)
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| Health Effect - Clinical Code |
No Known Impact Or Consequence To Patient (2692)
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| Date of Event |
05/10/2017
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Type of Reportable Event
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Serious Injury
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Additional Manufacturer Narrative
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The device has not been returned, therefore no product analysis can be performed.Without return of the device, a conclusive cause cannot be determined.Other relevant device(s) are: product id: evolutr-34-us, serial (b)(4), use by date 2019-04-12, (b)(4).A good faith effort will be made to obtain the applicable information relevant to the report.If information is provided in the future, a supplemental report will be issued.
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Event or Problem Description
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Medtronic received information that during the implant of a transcatheter bioprosthetic valve, the valve was positioned too high due to the pigtail catheter not being seated.This delivery catheter system (dcs) was pulled out of the annulus to recapture the valve but at approximately 50% recapture, angiography showed buckling of the dcs.A second attempt was made to recapture but was unsuccessful.The valve was dragged to the descending aorta in a third attempt to recapture without success.It was reported that the valve was deployed in the descending aorta due to using the inline sheath and not a 20 french sheath.A second transcatheter bioprosthetic valve was loaded onto a new dcs and successfully deployed without incident on the first attempt.No adverse patient effects were reported.
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Additional Manufacturer Narrative
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Upon receipt at medtronic's quality laboratory, the device was received with the capsule fully closed.The handle, tip-retrieval mechanism, deployment knob, and trigger appeared intact.The device was returned with the end cap/screw gear snap fit connected.Voids were observed along the mid and proximal section of the capsule.A buckle and a tear were observed on the proximal end of the capsule.If information is provided in the future, a supplemental report will be issued.
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Additional Manufacturer Narrative
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If information is provided in the future, a supplemental report will be issued.
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Additional Manufacturer Narrative
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Conclusion: the device history record was reviewed and showed that this product met all manufacturing specifications for product released for distribution.No issues were identified that would have impacted this event.Various factors can affect valve positioning, such as patient anatomy or physician experience, and the cause of the suboptimal placement could not be determined with the limited information available.The recapturing feature of the enveor delivery catheter system (dcs) allows for additional attempts at accurately positioning the valve.Images submitted from the hospital confirmed the reported capsule damage.The observed capsule damage and voids typically indicate delamination between the capsule outer polymer and the nitinol frame, and historically occur when the capsule is subjected to a bending force potentially after tracking through tortuous anatomy, or if a valve has been misloaded.Capsule damage/buckle typically occurs due to excessive compressive forces applied during the valve loading process.This excessive compressive force is only experienced when the valve is loaded incorrectly.A short fluoroscopy load check was provided indicating a good load, thus an assignable root cause cannot be determined at this time.There was no information to suggest a device quality deficiency during the manufacture of the device.Medtronic will continue to monitor the field for similar events.If information is provided in the future, a supplemental report will be issued.
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Search Alerts/Recalls
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