Removal method of a Supera interwoven stent invaginated during its implantation in endovascular procedure: a case report

TL;DR

This case report describes a new method to remove an invaginated Supera interwoven stent during an endovascular procedure.

Contribution

A novel and practical removal technique for invaginated interwoven stents is proposed and successfully demonstrated.

Findings

An invaginated Supera interwoven stent was successfully removed using a 0.014" wire and snare catheter.

The method leverages the structural characteristics of the stent for effective removal.

This approach offers a practical solution to a known complication during stent implantation.

Abstract

Supera interwoven stents (IWS) have a unique interwoven structure; thus, precise stent placement can be challenging as they are prone to elongation, shortening, and invagination. Particularly, invagination limits long-term patency. This proposed method aims to remove invaginated IWS.

A 70-year-old man presented with intermittent claudication in his left lower limb. Endovascular therapy was conventionally performed, and a 5.5 × 40 mm IWS was placed after balloon dilatation; however, invagination occurred. The invaginated IWS was successfully removed by a threading 0.014" wire through the outside of the stent strut, and a snare catheter was used to hold it in place from the inside. Then, while still in place, the 0.014" wire and snare catheter were driven into the guiding sheath.

This practical and easy approach to remove invaginated IWS from the body relies on the particular structural characteristics.

The online version contains supplementary material available at 10.1186/s42155-024-00449-3.

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