Patent ID: 8187223
Filing Date: 2012-05-29
Classification: A61B,A61L,A61M

Abstract:
1. A balloon for use in valvuloplasty comprising a catheter having two lumens running through its entire shaft and reaching to its external end that remains outside of the patient's body: wherein one lumen is used for the inflation of the balloon that is mounted to the other end of the catheter, and the other lumen is used for passing a guide-wire over which the balloon is advanced from the entry site to the application site; wherein a drug against restenosis coats a portion of the external surface of the balloon; wherein the balloon has a shape of an hour-glass shape when inflated with its waist having a smaller diameter than that of its ends, wherein only the surfaces of the middle segment of this balloon are coated with the antirestenotic drug; and wherein the antirestenotic drug is delivered from the external surface of the balloon to the aortic valve tissues during the inflation of the balloon in performing valvuloplasty.