Andrea S Morrison

US Patent:

8388673, Mar 5, 2013

Filed:

Sep 11, 2009

Appl. No.:

12/557758

Inventors:

Arlene Sucy Yang - Belmont CA, US
Kevin Jow - San Mateo CA, US
Andrea Dawn Morrison - San Mateo CA, US
Timothy A. Limon - Cupertino CA, US

Assignee:

Abbott Cardiovascular Systems Inc. - Santa Clara CA

International Classification:

A61F 2/06

US Classification:

623 115, 623 114, 623 116

Abstract:

A strut pattern of an endoprosthesis includes a plurality of W-shape cells that define a tubular body, the W-shaped cells at the opposite ends of the tubular body have a modified configuration that is different than the W-shaped cells at the middle portion of the tubular body. At the distal end of the tubular body, the W-shaped cells have crests with axial positions that are axially spaced apart, and have troughs with circumferential positions that are spaced apart. At the intermediate and distal end of the tubular body, the W-shaped cells crests with axial positions that coincide and have troughs with circumferential positions that coincide. The strut pattern is cut from a tubular precursor construct made of PLLA that has been radially expanded and axially extended by blow molding.

US Patent:

20130181380, Jul 18, 2013

Filed:

Mar 4, 2013

Appl. No.:

13/784594

Inventors:

Abbott Cardiovascular Systems Inc. - Santa Clara CA, US
Kevin Jow - San Mateo CA, US
Andrea Dawn Morrison - San Mateo CA, US
Timothy A. Limon - Cupertino CA, US

Assignee:

ABBOTT CARDIOVASCULAR SYSTEMS INC. - Santa Clara CA

International Classification:

B29D 23/00

US Classification:

264534

Abstract:

An endoprosthesis is made by radially expanding and axially extending a polymer tube. Next, portions of the polymer tube are removed to form an open framework of struts that define a tubular body. The tubular body has an end segment and an intermediate segment adjoining the end segment. The end segment includes a circumferential series of closed cells having a first W-shape closed cell. The intermediate segment includes a circumferential series of closed cells having a second W-shape closed cell. There are linear link struts at opposite ends of the individual first and second W-shape closed cells. The linear link struts of the first W-shape closed cell are longer than linear link struts of the second W-shape closed cell.