US 10,888,442 B2
Super elastic, bioabsorbable endovascular devices
Youngjae Chun, Pittsburgh, PA (US); William R. Wagner, Gibsonia, PA (US); Xinzhu Gu, Pittsburgh, PA (US); Peter Drew Wearden, Pittsburgh, PA (US); and Tomo Yoshizumi, Pittsburgh, PA (US)
Assigned to UNIVERSITY OF PITTSBURGH—OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATION, Pittsburgh, PA (US)
Appl. No. 15/525,411
Filed by UNIVERSITY OF PITTSBURGH—OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATION, Pittsburgh, PA (US)
PCT Filed Nov. 11, 2015, PCT No. PCT/US2015/060064
§ 371(c)(1), (2) Date May 9, 2017,
PCT Pub. No. WO2016/077410, PCT Pub. Date May 19, 2016.
Claims priority of provisional application 62/078,023, filed on Nov. 11, 2014.
Prior Publication US 2017/0340463 A1, Nov. 30, 2017
Int. Cl. A61F 2/86 (2013.01); A61L 31/14 (2006.01); A61L 31/02 (2006.01); A61L 31/08 (2006.01); A61L 31/18 (2006.01); A61F 2/82 (2013.01); C08L 67/04 (2006.01); C08L 75/04 (2006.01); A61F 2/07 (2013.01)
CPC A61F 2/86 (2013.01) [A61F 2/07 (2013.01); A61F 2/82 (2013.01); A61L 31/022 (2013.01); A61L 31/088 (2013.01); A61L 31/14 (2013.01); A61L 31/148 (2013.01); A61L 31/18 (2013.01); C08L 67/04 (2013.01); C08L 75/04 (2013.01); A61F 2210/0004 (2013.01); A61F 2210/0014 (2013.01); A61F 2250/0018 (2013.01); A61F 2250/0026 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An endovascular medical implant device, comprising:
a structural frame, elastically deformable from an original structure to a collapsed structure, comprising:
a plurality of elongated straight segments composed of biodegradable metal wire, each of the plurality of elongated straight segments having a length extending between a first segment end and an opposite second segment end,
wherein the biodegradable metal wire constitutes about 80% or greater of the total mass of the device;
a plurality of connectors each composed of nitinol, comprising a straight tube having an outer surface, an opening formed by the outer surface, a first tube end, a second tube end, and a length extending between the first and second tube ends;
a plurality of struts each composed of nitinol in a form selected from the group consisting of a v-shape wire and a u-shape wire, having a first strut end face and a second strut end face,
wherein a total of the nitinol constitutes about 10% or less of the total mass of the device;
a biodegradable polymer in a form of a coating comprising electrospun fibers deposited on a surface of one or more of the plurality of elongated straight segments,
wherein the biodegradable polymer constitutes about 10% or less of the total mass of the device,
wherein one or more pairs of the plurality of elongated straight segments are connected together by the plurality of connectors and the plurality of struts to form the structural frame,
wherein the first segment end of a first one of the plurality of elongated straight segments is connected to the first tube end of a first one of the plurality of connectors, and the first strut end face of a first one of the plurality of struts is connected to the second tube end of the first one of the plurality of connectors, and
wherein the second strut end face of the first one of the plurality of struts is connected to the second tube end of a second one of the plurality of connectors, and the first segment end of a second one of the plurality of elongated straight segments is connected to inserted into the first tube end of the second one of the plurality of connectors.