High strength and lubricious materials for vascular grafts

• US 20050085894A1
• Filed: 10/16/2003
• Published: 04/21/2005
• Est. Priority Date: 10/16/2003
• Status: Abandoned Application

• Current Assignee: Cordis Corporation (Cardinal Health, Inc.)
• Original Assignee: Cordis Corporation (Cardinal Health, Inc.)
• Inventors: Kershner, James R.
• Application Number:
  US10/686,833
• Publication Number:
  US 20050085894A1
• Time in Patent Office: Days
• US Class Current: 623/1.130
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/89 the wire-like elements comprising two or more adjacent rings flexibly connected by separate members
• CPC Class Codes: A61F 2/91 made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
• CPC Class Codes: A61F 2002/075 the stent being loosely attached to the graft material, e.g. by stitching
• CPC Class Codes: A61F 2250/0039 differing in diameter
• CPC Class Codes: A61L 27/22 Polypeptides or derivatives thereof , e.g. degradation products
• CPC Class Codes: A61L 31/043 Proteins; Polypeptides; Degradation products thereof

Abstract

A stent-graft fabricated from a high strength and lubricious material provides for a more durable and lower profile endoprosthesis. The stent-graft comprises one or more stent segments covered with a fabric formed by the weaving, knitting or braiding of a biocompatible, high tensile strength, abrasion resistant, highly durable fiber such as spider dragline silk. The one or more stent segments may be balloon expandable or self-expanding. The fabric may be attached to the stent segments utilizing any number of known materials and techniques.

Claims

1. An endovascular graft comprising:

one or more scaffold structures;

a biocompatible, high tensile strength, abrasion resistant, highly durable thin-walled graft material affixed to the one or more scaffold structures, the graft material including spider dragline silk; and

at least one connector for connecting the graft material to the one or more scaffold structures.

2. The endovascular graft according to claim 1, wherein the one or more scaffold structures comprises a plurality of first stents, a second stent and a third stent.

3. The endovascular graft according to claim 2, wherein the graft material is affixed to an outer portion of the plurality of first stents, the second stent and the third stent.

4. The endovascular graft according to claim 1, wherein the graft material comprises a plurality of crimps between the one or more scaffold structures.

5. The endovascular graft according to claim 1, wherein the graft material is woven.

6. The endovascular graft according to claim 1, wherein the graft material is knitted.

7. The endovascular graft according to claim 1, wherein the graft material is braided.

8. The endovascular graft according to claim 1, wherein the at least one connector comprises sutures.