Abstract: The invention provides a catheter capable of delivering drugs or other fluids to a desired remote location in a bodily passageway, such as a small, tortuous artery. The catheter of the invention includes inner and outer tubular layers, and a continuous helical wire coil disposed between the tubular layers along substantially the entire length of the catheter. To enhance trackability and pushability, the wire coil is constructed to provide regions of differing flexibility to the catheter. The wire coil in a first portion of the catheter has a first coil pitch and the wire coil in a second section of the catheter has a second coil pitch which is larger than the first coil pitch to provide the second section of the catheter with greater flexibility than the first section.

Abstract: A kink resistant multi-purpose drainage catheter. A drainage catheter is constructed using kink resistant tubing. One end of the kink resistant tube forms a drain for bodily fluids. The opposite end of the kink resistant tube has a molded LUER connector. The drain has numerous holes along its length to allow drainage. The substrate of the kink resistant tube is constructed from an extrusion. The extrusion is then covered with a coil along the body of the catheter. The entire length of the drainage catheter is coated with a final layer of polyurethane. The drain may be formed in a number of desired shapes along with the position of drainage holes.