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Glossary Term
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Transcatheter Heart Valve (TAVR)

Definition

A transcatheter heart valve (TAVR) procedure is a minimally invasive surgery used to treat patients with severe aortic stenosis (a condition where the aortic valve narrows and restricts blood flow). TAVR involves the implantation of a synthetic valve into the heart through a catheter, usually inserted via the femoral artery in the leg or other access points, rather than through open-heart surgery. This procedure is typically recommended for patients who are not candidates for traditional valve replacement surgery due to age, frailty, or other health concerns. The procedure involves positioning the new valve in place of the damaged aortic valve, which allows for improved blood flow and heart function.

Relevance to the MedTech Industry

TAVR has revolutionized the treatment of aortic stenosis, particularly for high-risk patients who are unable to undergo open-heart surgery. As part of the MedTech industry, TAVR is significant for the advancement of minimally invasive procedures, offering a safer and quicker recovery option compared to traditional surgery. The technology behind TAVR, including the development of the catheters, delivery systems, and bioprosthetic heart valves, is an example of innovative medical devices designed to address complex cardiovascular conditions. The growth of the TAVR market reflects its success in improving patient outcomes, and it has become a critical area of focus for device manufacturers, healthcare providers, and regulatory agencies.

Additional Information & Related Terms

Key Features of a Transcatheter Heart Valve (TAVR)

  1. Bioprosthetic Valve:The valve used in TAVR procedures is typically made from biological tissue (such as cow or pig heart tissue), which is designed to mimic the function of a natural heart valve. Biocompatible materials are essential to reduce the risk of rejection or complications after implantation.


  2. Catheter Delivery System:The TAVR valve is delivered to the heart through a catheter, which allows for a minimally invasive approach. The catheter is carefully navigated through the blood vessels to the heart, where the valve is deployed and positioned accurately.


  3. Valve Sizing and Fit:TAVR valves come in various sizes to ensure proper fit within the patient's anatomy. Accurate measurement and selection of the correct valve size are crucial to prevent complications such as leakage or improper functioning.


  4. Minimally Invasive Procedure:TAVR procedures are performed using a catheter-based approach, meaning that they require smaller incisions and typically result in quicker recovery times compared to traditional open-heart surgery. This minimizes risks associated with surgery, such as infection or extended hospital stays.


  5. Deployment and Positioning:Once in place, the valve is expanded and secured to function effectively within the patient's heart. Different methods of deployment may be used, including balloon-expansion or self-expanding designs.


Related Terms

  • Aortic Stenosis: A condition in which the aortic valve becomes narrowed, leading to reduced blood flow and heart function, often treated by TAVR.

  • Balloon-Expandable Valve: A type of transcatheter valve that is mounted on a balloon catheter and expanded to fit in the aortic valve position.

  • Bioprosthetic Valve: A prosthetic heart valve made from animal tissue, commonly used in TAVR procedures.

  • Valve-in-Valve Procedure: A procedure where a new valve is implanted inside a failing bioprosthetic valve, often using the TAVR technique.

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