ANGIOPLASTY CATHETER WITH MULTIPLE COAXIAL BALLOONS

摘要

An angioplasty catheter (11) comprising a flexible elongate tubular member (12) having proximal and distal extremities (13 and 14). A lumen (16) therein extends from the proximal extremity (13) to the distal extremity (14). First and second balloons (21 and 22) are carried by said distal extremity (14) and are coaxially disposed with respect to each other on the distal extremity (14) of the flexible elongate tubular member (12). Means (46) are carried by the flexible elongate tubular member (12) for inflating the first and second balloons (21 and 22) one at a time independent of each other.