Patent ID: 8012086

Claim:
A translumenal access device, comprising: an inner shaft adapted to be inserted through a body lumen and having proximal and distal ends with an inner lumen extending therethrough, the distal end including an opening adapted to be positioned adjacent to an inner wall of a body lumen containing the inner shaft; and an outer shaft disposed around at least a portion of the inner shaft; a sealing mechanism coupled to a distal portion of the outer shaft and at least partially disposed around and movable relative to the inner shaft, the sealing mechanism having a first seal positioned distal of the opening and a second seal positioned proximal of the opening, the first seal being formed on a distal tip coupled to the distal end of the outer shaft by one or more struts extending therebetween such that the first seal is spaced apart from a distal-most end of the outer shaft, and the second seal being disposed around the distal-most end of the outer shaft, the first and second seals each having a plurality of suction ports formed around an outer perimeter thereof and adapted to suction tissue thereon so as to form a seal around an inner wall of a body lumen and to isolate the opening in the inner shaft within a portion of a body lumen.