Catheter for uniform delivery of medication

摘要

A catheter (250) for delivering a fluid to an anatomical region, comprising an elongate tubular catheter body (254) defining a lumen (268), a distal end (262) of said lumen being closed, a portion of said catheter body having a plurality of openings (266) extending through a side wall of said catheter body thereby defining an infusion section of said catheter; a tubular sheath (252) constructed from a porous material, said tubular sheath being positioned over said infusion section and extending at least a length of said infusion section, said tubular sheath and said catheter body being configured such that fluid within said lumen must pass through said tubular sheath to exit said catheter; wherein a pore size of said porous material is less than about 0.5 microns.