Patent ID: 9402983
Filing Date: 2016-08-02
CPC Classification: A61M

Claim Text:
1. A balloon catheter comprising a sequentially stepped outer shell, when fully inflated, such that: a first section of the outer shell is constrained to a first diameter, greater than an outer diameter of the catheter, when fully inflated, and a second section, adjacent to the first section and attached to the first section by a step transition, the step transition providing a discontinuous change in diameter from the first diameter to the second diameter along a length of the balloon catheter, and the second section is constrained to a second diameter, the second diameter being greater than the first diameter, wherein the sequentially stepped outer shell comprises at least three sequentially increasing steps, the step transition between the first section and the second section providing one of the three sequentially increasing steps, followed by at least three sequentially decreasing steps.