Patent ID: 9597171
Date: 2017-03-21
CPC Classifications: A61B,A61M

Claim:
1. A retrieval catheter, comprising: an elongate shaft having a shaft lumen extending from a proximal end portion to a distal end portion of the elongate shaft; an inflatable tip disposed at a distal end of the elongate shaft, the inflatable tip extending distally of the distal end and having an outer surface and an inner surface forming a tip lumen distally of the distal end; wherein, in an expanded state, the inner surface is expanded radially outwardly relative to the inner surface in an unexpanded state; wherein, in the unexpanded state, the inner surface is smoother than the outer surface and the outer surface is more textured than the inner surface; wherein the inflatable tip comprises a spiral pathway between the inner surface and the outer surface and extending between a proximal end of the inflatable tip and a distal end of the inflatable tip; and wherein (i) an entire length of the inner surface between the proximal end of the inflatable tip and the distal end of the inflatable tip and (ii) an entire length of the outer surface between the proximal end of the inflatable tip and the distal end of the inflatable tip are radially separated by the spiral pathway.