Patent ID: 7867268
Filing Date: 2011-01-11
Classification: A61F

Abstract:
1. A treatment element delivery device, comprising: an outer shaft comprising a tapered distal end, a proximal end, and a lumen therebetween; an inner shaft slidably disposed within and concentric with the outer shaft, comprising a proximal end and a tapered distal end configured to engage the outer shaft distal end, wherein the outer shaft distal end is positioned distal to the inner shaft distal end, and the outer shaft is slidable relative to the inner shaft between a first position in which the distal end of the inner shaft is positioned within the lumen of the outer shaft and spaced from the distal end of the outer shaft and a second position in which the distal end of the inner shaft matingly engages the distal end of the outer shaft; a rigid inner member having distal and proximal ends and an interior portion disposed inside the inner shaft and defining a lumen within the inner shaft, the proximal end of the rigid inner member being coupled to the proximal end of the inner shaft, the rigid inner member further comprising an exterior portion protruding beyond the distal end of the inner shaft; a stepped exterior tube comprising a wide diameter end and a sheath, the wide diameter end being rigidly coupled to the distal end of the outer shaft and fully enclosing the exterior portion of the rigid inner member in the second position; and a catheter coupled to and extending distally from the rigid inner member distal end, the distal end of the catheter comprising a mounting region for a treatment element, said treatment element mounting region being covered by the distal end of the sheath in the first position, and the treatment element mounting region being uncovered by the distal end of the sheath in the second position.