Patent ID: 8292874
Filing Date: 2012-10-23
Classification: A61M

Abstract:
1. A catheter shaft comprising: a first tube including an inflation lumen defined by an inside wall surface in fluid contact with a dilation balloon, an outside wall surface, the first tube having an orifice in a portion of the first tube, the first tube formed of a first material; a second tube inserted through the orifice and extending distally from the orifice inside the inflation lumen, the second tube comprising an inner layer, an outer layer and an intervening intermediate layer, the second tube having a length and a lumen therethrough, the inner layer defining an inner wall surface, the outer layer defining an outside wall surface; and a bonding region wherein the second tube outside wall surface is bonded to the first tube outside wall surface by re-flow of the first and second tube outside wall surfaces; further wherein the second tube outside wall surface is bonded to the first tube inside wall surface by re-flow of the first tube inside wall surface and second tube outside wall surface.