A New Heart Valve That Replaces Old Ones Without Open Surgery

This patent describes a prosthetic heart valve that can be inserted without major surgery, using an expandable support and special arms to hold it in place within the heart.

What it covers

This technology describes a prosthetic heart valve designed for percutaneous replacement, meaning it's inserted through a small incision rather than open-heart surgery. The device includes an expandable support that fits between the natural valve's leaflets. Crucially, it features multiple asymmetrically arranged arms. These arms are designed to securely hold the native valve's leaflets between themselves and the outer surface of the expandable support. Some versions of these arms also have tip portions that engage the subannular surface of the native valve, providing extra stability.

What it doesn't cover

• —Does not cover heart valve replacements requiring traditional open-heart surgery, as it specifically focuses on percutaneous methods.
• —Does not cover prosthetic valves that lack asymmetrically arranged arms for securing native valve leaflets.
• —Does not cover devices that do not engage the subannular surface of the native valve with tip portions, if that specific engagement is absent.
• —Does not cover prosthetic valves that are not expandable or do not use an expandable support structure.
• —Does not cover non-valve cardiac implants, such as stents for arteries or pacemakers.

The clever bit

The novelty lies in the specific design for securing the new valve: using asymmetrically arranged arms that grip the native valve's leaflets and tip portions that engage the subannular surface. This combination provides a stable fit for a percutaneously delivered valve, which is a significant engineering challenge.

Why it matters

Replacing a damaged heart valve is a critical medical procedure, and traditional open-heart surgery carries significant risks and recovery times. This patent focuses on less invasive, percutaneous methods, which can offer patients quicker recovery, fewer complications, and broader access to life-saving treatments. Such innovations are vital for improving patient outcomes and expanding the treatable population for heart valve diseases.

Real-world examples

• 1.Transcatheter Aortic Valve Replacement (TAVR) devices
• 2.Transcatheter Mitral Valve Replacement (TMVR) devices
• 3.Edwards SAPIEN transcatheter heart valves
• 4.Medtronic CoreValve transcatheter heart valves