LOW PROFILE PERFUSION CATHETER

摘要

Disclosed is a low profile perfusion catheter, for use in coronary angioplasty applications. Preferably the catheter is provided with an inflatable dilatation balloon (28), and a perfusion lumen (12) extending therethrough. The diameter of the perfusion lumen is enlargeable from a first (37) reduced diameter to a second enlarged diameter. In one embodiment an axially movable tubular support (50) is movable within the lumen from a proximal insertion position to a distal perfusion position. In another embodiment the support (72) is radially expandable. In a further embodiment a porous drug delivery balloon (122) is provided.