In the clinical trials at Columbia Presbyterian, doctors are confining the heart-valve procedure to people who can't have open-chest surgery, which includes putting a patient on a heart-lung machine and involves a long recovery process.
But ABC News' medical editor Dr. Tim Johnson says that eventually the heart-valve procedure will start replacing traditional surgery.
"That means, probably, well over 100,000 people a year in this country will have this relatively simple procedure," Johnson said.
Find out more about the Transcatheter Heart Valve.
If you have questions for Columbia Presbyterian Medical Center about the heart-valve procedure you can e-mail firstname.lastname@example.org