CATHETER, FLUID CONVEYING METHOD, AND PERCUTANEOUS PROCEDURE

摘要

A catheter (14) includes an elongate catheter body (24) having an outer surface with a non-uniform contour and including a plurality of maximum surface elevation points (36) and a plurality of minimum surface elevation points (38) defining a non-uniform elevation profile relative to a longitudinal axis of the catheter body. The outer surface further includes a fluid transfer interface which includes the plurality of minimum surface elevation points and a plurality of porous surface areas (39), and a tissue contact interface which includes the plurality of maximum surface elevation points and a plurality of nonporous surface areas (40). The tissue contact interface inhibits external occlusion of the fluid transfer interface during transferring fluid between a fluid lumen (32) defined by the elongate catheter body (24), and an intraluminal space such as an intravascular space within a patient.