US 9,808,608 B2
Helical coil delivery device for active agent
Bucknell C. Webb, Yorktown Heights, NY (US)
Assigned to INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (US)
Filed by International Business Machines Corporation, Armonk, NY (US)
Filed on Nov. 16, 2014, as Appl. No. 14/542,614.
Prior Publication US 2016/0136401 A1, May 19, 2016
Int. Cl. A61K 9/22 (2006.01); A61M 31/00 (2006.01)
CPC A61M 31/002 (2013.01) 10 Claims
OG exemplary drawing
 
1. A delivery device comprising:
a substrate rolled on itself to form a coil;
an active agent deposited between an inner surface and an outer surface of the substrate formed in the coil, wherein the inner surface of the substrate at a first portion of the substrate contacts the outer surface of the substrate at a second portion of the substrate; and
a pair of end caps, each end cap disposed on a corresponding end of the coil and along a respective exposed edge of the substrate.