US 12,239,555 B2
Stent and method of making same
Scott P. Carpenter, Fremont, CA (US); and Julio C. Palmaz, Napa, CA (US)
Assigned to Vactronix Scientific, LLC, San Antonio, TX (US)
Filed by Vactronix Scientific LLC, Fremont, CA (US)
Filed on Jul. 12, 2021, as Appl. No. 17/372,940.
Application 17/372,940 is a division of application No. 16/287,519, filed on Feb. 27, 2019, granted, now 11,058,564.
Prior Publication US 2022/0054288 A1, Feb. 24, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61F 2/915 (2013.01)
CPC A61F 2/915 (2013.01) [A61F 2002/91533 (2013.01); A61F 2002/91541 (2013.01); A61F 2002/91558 (2013.01); A61F 2002/91566 (2013.01); A61F 2210/0014 (2013.01); A61F 2230/0054 (2013.01); A61F 2240/001 (2013.01); A61F 2250/0067 (2013.01); A61F 2250/0068 (2013.01); A61F 2250/0098 (2013.01); A61L 2420/02 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A stent having an outer abluminal surface and an inner luminal surface, comprising:
a. A plurality of generally sinusoidal circumferential ring members having peaks and valleys;
b. A plurality of bridge members interconnecting adjacent pairs of sinusoidal circumferential ring members;
c. A plurality of projection members extending from at least one of a proximal and a distal generally sinusoidal circumferential ring member at proximal and/or distal ends of the stent, the projection members further comprising open frame members capable of being engaged with radiopaque cuff members thereupon;
d. A plurality of volume-enhancing features formed in or on the outer abluminal surface of the stent and the plurality of projection members, wherein the plurality of volume-enhancing features further comprise elongate grooves have a depth between about 0.5 μm and about 10 μm; and
e. A drug eluting layer covering the entire outer abluminal surface of the stent and at least substantially or totally filling the plurality of volume-enhancing features, wherein the drug eluting layer substantially fills the plurality of grooves and has a thickness of between about 3 μm to about 20 μm from the outer abluminal surface of the stent.