Patent ID: 9375555
Filing Date: 2016-06-28
CPC Classification: A61B,A61F,A61M

Claim Text:
1. A method for dilating heart valve leaflets comprising: providing a catheter having a balloon; said balloon having a proximal section and a distal section; inflating said proximal and distal sections to a first pressure in which said distal section engages a ventricular outflow tract via direct, circumferential contact, while maintaining said proximal section in a non-fully expanded configuration; positioning said distal section upstream and adjacent a valve annulus; said distal section having a larger diameter than a diameter of said valve annulus and said proximal section having a smaller diameter than said diameter of said valve annulus; positioning said proximal section downstream and adjacent to said valve leaflets; dilating said heart valve leaflets with said proximal section by further inflating said balloon to a second pressure higher than said first pressure.