Patent ID: 7637873

Claim:
A wire guide device for use within a gastrointestinal track comprising: A wire guide comprising an elongate shaft having a longitudinal axis, a first end portion, and a flexible second distal end portion, the distal second end portion comprising a non-coiled portion, the non-coiled portion comprising a wire guide core and further comprising a first outer surface and a first surface area, the elongate shaft tapering in a distal direction such that a first end portion diameter is greater than a second end portion diameter; a plurality of textures being integrally formed from the wire guide second end portion, the textures being disposed substantially circumferentially about the non-coiled portion of the distal second end portion, at least one of the textures emerging radially outwardly and at least one of the textures emerging radially inwardly such that the textures form peaks and valleys at a cross section of the non-coiled portion such that the cross section comprises a circumferentially undulating effective perimeter about the longitudinal axis, wherein the non-coiled portion with the textures comprises a second outer surface having a second surface area that is greater than the first surface area without textures and further comprising a substantially uniform column strength and flexibility; and a permeable member attached to adjacent peaks such that it forms at least one or more reservoir extending longitudinally in the distal direction of the longitudinal axis between the outwardly radiating adjacent peaks along the second outer surface of the second end portion, the reservoir being configured to allow delivery of at least one of a therapeutic agent and hydrophilic material through the permeable membrane; wherein the membrane is partially shrink wrapped about adjacent peaks such that the reservoir is formed in the valley therebetween the adjacent peaks, the reservoir having a distal port extending to a space exterior to the elongate wire guide second end.