MEDICAL CATHETER WITH BUMP TUBING PROXIMAL SEGMENT

摘要

A medical catheter (10) for inserting into a body includes a bump tubing section with proximal and distal ends, wherein the proximal end is configured to mate with a hub. The bump tubing section has an intermediate portion (22) extending away from the proximal end (21) with a substantially constant outer diameter and thickness, and a taper portion (23) adjacent the distal end with generally decreasing inside and outside diameters to provide a gradually increasing flexibility toward the distal end of the bump tubing section. The bump tubing section is comprised of a polymer having a predetermined flexural modulus. A tip section is (24) disposed distally of the distal end of the bump tubing section comprising a distal liner (30) and a distal cover (31) such that at least a majority of the tip section has a substantially constant stiffness and a flexural modulus substantially equal to or greater than the predetermined flexural modulus.