Patent ID: 9616202
Date: 2017-04-11
CPC Classifications: A61M

Claim:
1. A treatment device comprising: a device body having a shaft; an inflatable balloon disposed at a distal portion of the shaft, the inflatable balloon possessing an outer surface; a biologically active agent on the outer surface of the inflatable balloon and containing at least one biologically active agent; a protective sleeve covering the biologically active agent and displaceable proximally in relation to the device body; an interposed member having a self-expanding function and disposed between the inflatable balloon and the protective sleeve in surrounding relation to the inflatable balloon, the entirety of the interposed member disposed between the inflatable balloon and the protective sleeve having the self-expanding function, and the interposed member is displaceable proximally in relation to the device body to be completely retracted from the inflatable balloon, so that when the inflatable balloon expands the biologically active agent on the outer surface of the inflatable balloon directly contacts a target site and the inflatable balloon does not contact the interposed member; and the interposed member expanding, while still surrounding the inflatable balloon, when the protective sleeve is displaced proximally.