Patent ID: 6712812
Filing Date: 2004-03-30
Classification: A61B,A61F,A61N

Abstract:
A medical device for creating collateral channels in lung tissue comprising:an elongate body having a proximal end and a distal end, and a lumen extending therethrough, the elongate body having a shoulder being radially adjustable relative to said elongate body and has a reduced profile and an expanded profile; a heating element adapted to use heat to create holes in the tissue and extending distally from said distal end, and having a heating surface located over a front surface of said heating element said heating surface adapted to minimize heat in a radial direction from said heating element, wherein said heating element is moveable within at least a portion of said lumen of said elongate body; where the shoulder is located proximate to said heating element and has a diameter greater than a diameter of said heating element to limit the depth of penetration of said heating element within the tissue, said shoulder comprises a front end of said elongate body when said heating element is extended from said lumen and in said expanded profile said shoulder diameter is greater than said diameter of said heating element; and an insulating surface located adjacent to said heating surface and which prevents heating of tissue adjacent to said insulating surface.