US 12,263,077 B2
Vascular grafts and method for preserving patency of the same
Andrew J. Marshall, Seattle, WA (US); Max Maginness, Seattle, WA (US); Adrienne Oda, Seattle, WA (US); and Brandt Scanlan, Seattle, WA (US)
Assigned to Healionics Corporation, Seattle, WA (US)
Filed by Healionics Corporation, Seattle, WA (US)
Filed on Dec. 1, 2021, as Appl. No. 17/457,246.
Application 17/457,246 is a division of application No. 16/457,530, filed on Jun. 28, 2019, abandoned.
Application 16/457,530 is a continuation of application No. 14/627,871, filed on Feb. 20, 2015, abandoned.
Claims priority of provisional application 61/984,537, filed on Apr. 25, 2014.
Claims priority of provisional application 61/943,178, filed on Feb. 21, 2014.
Prior Publication US 2022/0087811 A1, Mar. 24, 2022
Int. Cl. A61F 2/06 (2013.01); A61F 2/00 (2006.01); A61L 31/04 (2006.01); A61L 31/14 (2006.01)
CPC A61F 2/06 (2013.01) [A61F 2/0077 (2013.01); A61L 31/04 (2013.01); A61L 31/146 (2013.01); A61F 2002/0081 (2013.01); A61F 2210/0076 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for reducing or preventing stenosis caused by neointimal hyperplasia within or near either end of an implanted vascular graft, the method comprising: connecting a vascular graft to one or more native blood vessels to provide the implanted vascular graft in tissue, wherein the vascular graft has a tissue-interface layer having textured microporous surface that reduces constriction from the tissue response to the implanted vascular graft to a degree that reduces neointimal hyperplasia, and wherein the tissue-interface layer comprises interconnected pores that are larger than 20 microns and smaller than 200 microns, and where adjacent pores have inter-pore openings of larger than 5 microns and smaller than 50 microns.