Segmented scaffold designs

Patent metadata

Field	Value
Publication number	US-9585779-B2
Application number	US-201414333354-A
Country	US
Kind code	B2
Filing date	Jul 16, 2014
Priority date	Aug 13, 2012
Publication date	Mar 7, 2017
Grant date	Mar 7, 2017

Abstract

Segmented scaffolds composed of disconnected scaffold segments with overlapping end rings are disclosed. Scaffolds with at least one discontinuous link are also disclosed.

First claim

What is claimed is:

1. A segmented scaffold, comprising:
at least first and second radially expandable and disconnected polymer scaffold segments arranged end to end, each of the first and second segments comprising:
undulating cylindrical rings composed of struts and forming a plurality of diamond-shaped cells, and
a first ring at a first end and a second ring at a second end,
wherein
each of the first and second rings having alternating peak and valley undulations,
a peak is formed by a side from three diamond-shaped cells,
the peaks of the first ring extend in a first direction,
the peaks of the second ring extend in a second direction opposite the first direction, and
the peaks of the first ring are longitudinally aligned with the peaks of the second ring;

wherein
the first ring of the second segment is arranged with the second ring of the first segment such that the peaks of the first ring of the second segment overlap the valleys of the second ring of the first segment;
each segment being cut from a polymer tube or sheet,
each segment configured for being crimped to a balloon, and
prior to crimping each segment has a pre-crimp diameter and a length, and the length is at least 1.5 times the pre-crimp diameter.

2. The segmented scaffold of claim 1 , wherein there are 2 to 6 or 2 to 3 undulating cylindrical rings per segment.

3. The segmented scaffold of claim 1 , wherein a minimum length of the first segment is a longitudinal length of one diamond-shaped cell.

4. The segmented scaffold of claim 1 , wherein the first segment has a maximum length equal to three-times a longitudinal length of a diamond-shaped cell.

Assignees

• Abbott Cardiovascular Systems Inc

Inventors

• Papp John E
• Hossainy Syed Faiyaz Ahmed
• Ngo Michael
• Abunassar Chad
• Anukhin Boris
• Trollsas Mikael
• Schwartz Lewis B

Classifications

• A61F2210/00

  Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof · CPC title

• B29K2067/046

  PLA, i.e. polylactic acid or polylactide · CPC title

• B29K2995/006

  Bio-degradable, e.g. bioabsorbable, bioresorbable or bioerodible · CPC title

• B29C66/1248

  Interpenetrating groove joints (interpenetrating fingered joints B29C66/139) · CPC title

• B29C66/71

  characterised by the composition of the plastics material of the parts to be joined (welding bar compositions B29C65/125) · CPC title