US 11,701,216 B2
Stent to assist in arteriovenous fistula formation
Marius C. Florescu, Omaha, NE (US)
Assigned to Board of Regents of the Universityof Nebraska, Lincoln, NE (US)
Filed by The Board of Regents of the University of Nebraska, Lincoln, NE (US)
Filed on Aug. 13, 2020, as Appl. No. 16/992,808.
Application 15/438,210 is a division of application No. 14/409,304, abandoned, previously published as PCT/US2013/046370, filed on Jun. 18, 2013.
Application 16/992,808 is a continuation of application No. 16/025,253, filed on Jul. 2, 2018, granted, now 10,772,718.
Application 16/025,253 is a continuation of application No. 15/438,210, filed on Feb. 21, 2017, granted, now 10,034,739, issued on Jul. 31, 2018.
Claims priority of provisional application 61/661,133, filed on Jun. 18, 2012.
Prior Publication US 2020/0368011 A1, Nov. 26, 2020
Int. Cl. A61F 2/06 (2013.01); A61F 2/915 (2013.01); A61F 2/958 (2013.01); A61L 31/06 (2006.01); A61L 31/14 (2006.01); A61B 17/11 (2006.01); A61F 2/86 (2013.01); A61M 25/10 (2013.01); A61M 1/36 (2006.01); A61F 2/07 (2013.01); A61F 2/82 (2013.01)
CPC A61F 2/064 (2013.01) [A61B 17/11 (2013.01); A61F 2/06 (2013.01); A61F 2/86 (2013.01); A61F 2/915 (2013.01); A61F 2/958 (2013.01); A61L 31/06 (2013.01); A61L 31/14 (2013.01); A61M 1/3655 (2013.01); A61M 25/104 (2013.01); A61B 2017/1107 (2013.01); A61B 2017/1135 (2013.01); A61F 2/07 (2013.01); A61F 2002/821 (2013.01); A61F 2002/91558 (2013.01); A61F 2220/0008 (2013.01); A61F 2220/0016 (2013.01); A61F 2230/0013 (2013.01); A61F 2230/0054 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A system for use in creation of an arteriovenous fistula, comprising:
a tubular body constructed from a biocompatible material, the tubular body configured to insert into a candidate vein to form a stent and vein structure for introduction into a candidate artery, the tubular body further configured to be shaped by application of heat and pressure to the stent and vein structure after insertion of the tubular body into the candidate vein to form the stent and vein structure;
a first angioplasty balloon configured to expand the candidate vein before the insertion of the tubular body into the candidate vein;
a second angioplasty balloon configured to carry the tubular body into the candidate vein and further configured to expand the tubular body within the candidate vein to form the stent and vein structure;
a conical shape tool separate from the first and second angioplasty balloons, the conical shape tool configured to be inserted into a distal aperture of the tubular structure and manipulated to form a desired anastomosis angle after the insertion and expansion of the tubular body within the candidate vein to form the stent and vein structure; and
a fastener configured to connect a distal portion of the stent and vein structure to the candidate artery to form an anastomosis.