we have something called floppy valve. tear and they can be associated with leakage and you can get in trouble when the valve leaks. brian lamb: this is animation, this is blacker's gothic -- lac roscopic. >> unlike traditional surgery in this procedure a surgeon manipulates the highly advanced robotic tool and makes only tiny incisions. robotic arms are inserted close to the heart and then we open the sternum. we make key incisions. the tiny camera provides a view of the disease valves. we see that the valve is oversized, and it is not close properly, which allows blood to go backwards. we remove the misshapen portion of the valve. and reconstruct it with sutures. we insert an artificial ring to reduce its size. we so the ring into place and the valve now closes properly so blood no longer leaks back. after the procedure, only a few scars remain, instead of a large scar in the middle of chest. brian lamb: how old is this procedure? dr. patrick o'gara: this is an example of robotic repair. procedure is now probably 15 year