US 6,981,987 B2 | ||
Removable stent for body lumens | ||
Shawn Thayer Huxel, Lawrenceville, N.J. (US); Arindam Datta, Hillsborough, N.J. (US); Yufu Li, Bridgewater, N.J. (US); Dennis D. Jamiolkowski, Long Valley, N.J. (US); and Emil Richard Skula, Wayne, N.J. (US) | ||
Assigned to Ethicon, Inc., Somerville, N.J. (US) | ||
Filed on May 08, 2001, as Appl. No. 9/851,257. | ||
Application 09/851257 is a continuation in part of application No. 09/470620, filed on Dec. 22, 1999, granted, now 6,494,908. | ||
Prior Publication US 2002/0002399 A1, Jan. 03, 2002 | ||
This patent is subject to a terminal disclaimer. | ||
Int. Cl. A61F 2/06 (2006.01); A16M 5/00 (2006.01) |
U.S. Cl. 623—1.22 | 12 Claims |
1. A stent, comprising:
a helical structure having a plurality of coils, said structure having a longitudinal axis and said coils having a pitch,
said structure having an internal longitudinal passage wherein said structure is made from a filament having a cross-section
and an outer surface, said filament comprising:
a soft flexible elongated member having an outer surface; and
a bioabsorbable or biodegradable polymeric outer coating on the outer surface of the member; wherein, the polymeric coating has sufficient mechanical integrity to effectively maintain the flexible member in a helical
configuration, until the coating has sufficiently been degraded or absorbed in vivo to effectively convert the helical structure
back into a soft, elongated member, wherein the coating comprises a polymer selected from the group consisting of polyacrylamides,
polyethylene glycols, polyethylene oxide, vinyl alcohols, poly(N-vinyl pyrrolidone)s and polymers made from monomers selected
from the group consisting of lactide, glycolide, para-dioxanone, caprolactone, and trimethylene carbonate, caprolactone, blends
thereof and copolymers thereof.
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