Patent ID: 9119737
Filing Date: 2015-09-01
Classification: A61F,A61M

Abstract:
1. A catheter system comprising: a catheter shaft including a proximal region, a distal region and a longitudinal axis, the catheter shaft defining a primary guidewire lumen configured to receive a primary guidewire; a balloon disposed about the distal region of the catheter shaft, the balloon having a first length; and a side branch guidewire housing attached to the balloon, the side branch guidewire housing defining a side branch guidewire lumen, the side branch guidewire housing having a second length, wherein the second length is equal to or less than the first length of the balloon, the side branch guidewire housing comprising a first portion that extends parallel to the longitudinal axis, a bend portion, and at least a second portion that extends at an oblique angle away from the longitudinal axis and away from the balloon, wherein at least part of the first portion of the side branch guidewire housing is attached directly to the balloon, wherein the side branch guidewire housing further comprises an expandable centering band, the centering band being disposed around the second portion of the side branch guidewire housing, wherein the entire expandable centering band is spaced apart distally from the bend portion of the side branch guidewire housing, the centering band having an expanded state and an unexpanded state, wherein the first portion of the side branch guidewire housing is free from any expandable element.