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Related Experiment Video

Updated: Mar 1, 2026

Novel and Innovative Hybrid Technique for Type A Aortic Dissection

Novel and Innovative Hybrid Technique for Type A Aortic Dissection

Published on: March 28, 2025

Repositionable self-expanding aortic bioprosthesis.

Bruna Gomes¹, Hugo A Katus¹, Raffi Bekeredjian¹

¹a Department of Internal Medicine III , University of Heidelberg , Heidelberg , Germany.

Expert Review of Medical Devices

|June 3, 2017

Summary

This summary is machine-generated.

Transcatheter aortic valve implantation/replacement (TAVI) offers new options for aortic stenosis. Repositionable self-expanding transcatheter heart valves (THV) aim to improve TAVI safety and effectiveness.

Keywords:

Aortic stenosis TAVI TAVR bioprosthesis repositionable retrievable self-expanding transcatheter

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Area of Science:

Cardiovascular Medicine
Interventional Cardiology
Medical Device Technology

Background:

Transcatheter aortic valve implantation/replacement (TAVI) is a primary treatment for severe symptomatic aortic stenosis in high-risk patients.
TAVI has evolved significantly since 2002, with continuous advancements in transcatheter heart valve (THV) technology.
Existing THV systems utilize balloon-expandable, self-expandable, or other mechanisms.

Purpose of the Study:

To review repositionable and retrievable self-expandable transcatheter heart valve (THV) systems.
To highlight the potential benefits of repositionability in TAVI procedures.
To discuss the ongoing developments in TAVI technology.

Main Methods:

Review of current literature on transcatheter heart valve systems.
Focus on self-expandable THV technologies with repositioning capabilities.
Analysis of the impact of repositionability on TAVI outcomes.

Main Results:

Several THV systems are available, including balloon-expandable and self-expandable options.
Some THV systems offer repositionability and retrievability, even after deployment.
Repositionable THVs may reduce the risk of valve malpositioning during TAVI.

Conclusions:

Repositionability is a significant advancement for enhancing TAVI safety and efficacy.
The development of repositionable self-expanding THV systems is a key area of innovation.
Further research is needed to determine the optimal expansion mechanism for future THVs.