| abstract |
Catheters for drug delivery or for both dilatation and drug delivery are provided with a guide wire lumen (14) terminating within the catheter shaft (12) and having an opening through the catheter shaft (12) to enable a guide wire (28) to exit the catheter shaft (12) substantially distal to the proximal end of the catheter. In one embodiment, drug delivery ports (36) are provided between occlusion balloons (22, 24). In another embodiment, a dilatation balloon (120) is also provided between the occlusion balloons (22, 24). In another embodiment, a double layered balloon is provided to simultaneously dilatate the stenosis and deliver medication to the site. Alternatively, a balloon can be provided which only delivers medication. |