Catheter with occlusion resistant tip

摘要

A catheter is provided that includes an elongated tubular body extending to a distal end. The tubular body has a first and a second lumen with a septum disposed therebetween. The tubular body includes a first wall that defines the first lumen and a second wall that defines the second lumen. A portion of the septum extends distally beyond the first lumen and the second lumen. The first wall includes a first wall extension that extends distally beyond the first lumen and is spaced apart from the portion of the septum. The first wall extension defines a concave surface facing the portion of the septum. The second wall includes a second wall extension that extends distally beyond the second lumen and is spaced apart from the portion of the septum. The second wall extension defines a concave surface facing the portion of the septum. The first wall extension and the second wall extension are symmetrically disposed about the portion of the septum.