ePTFE graft-stent composite device

• US 20060178723A1
• Filed: 03/29/2006
• Published: 08/10/2006
• Est. Priority Date: 01/17/1997
• Status: Active Grant

• Current Assignee: Lifeshield Sciences LLC (Acacia Research Corporation)
• Original Assignee: Meadox Medicals, Inc. (Boston Scientific Corporation)
• Inventors: Lentz, David J., Dormier, Edward
• Granted Patent: US 8,083,790 B2
• Time in Patent Office: Days
• US Class Current: 623/1.130
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/92 Stents in the form of a rolled-up sheet expanding after insertion into the vessel , e.g. with a spiral shape in cross-section
• CPC Class Codes: A61F 2002/072 Encapsulated stents, e.g. wire or whole stent embedded in lining
• CPC Class Codes: A61F 2002/075 the stent being loosely attached to the graft material, e.g. by stitching
• CPC Class Codes: Y10S 623/901 Method of manufacturing prosthetic device
• CPC Class Codes: Y10S 623/909 Method or apparatus for assembling prosthetic

Abstract

An implantable intraluminal device includes a multilayer composite tubular device supporting one or more stents between the layer thereof. A first porous elongate tube includes an exterior surface and an interior luminal surface. A radially expandable member is disposed about the exterior surface of the first tube. A second porous elongate tube is disposed concentrically over the first tube and is secured thereto so that the radially expandable member is longitudinally immobilized therebetween.

Claims

1-43. -43. (canceled)

44. A composite stent-graft device comprising:

a plurality of spaced apart stents;

a multi-layer graft including an elongate outer tube concentrically disposed over an inner tube;

a plurality of radially expandable stents supported in spaced apart relationship between said tubes, each of said stents having a longitudinal expanse;

said stents being expandable between a radially contracted position and a radially expanded condition without substantial change in said longitudinal expanse of said stents.

45. A composite stent-graft device according to claim 44, wherein each said radially expandable stent comprises an elongate element with a first end and a second opposed end, said elongate element being formed in a generally circular configuration with said first end adjacent to and overlapping said second end.

46. A composite stent-graft device according to claim 45, wherein said first end of said element is moveable with respect to said second end of said element to effect said radial expansion.

47. A composite stent-graft device according to claim 45, wherein an end extent of said first end includes a plurality of second end engagement means for engaging a distal end of said second end at plural discrete locations along said end extent for providing finite adjustability therebetween.

48. A composite stent-graft device according to claim 44, wherein each said radially expandable stent comprises an elongate element with a first end and a second opposed end, said elongate element being formed in a generally circular configuration with said first and second ends of said elongated member being in radial alignment to each other.

49. A composite stent-graft device according to claim 48, wherein said second end includes an elongate open-ended channel.

50. A composite stent-graft device according to claim 49, wherein said first end of said element is insertable into said opened channel of said second end for movement therein upon radial expansion of said stent.

51. A composite stent-graft device according to claim 44, wherein each said stent is a bio-compatible metal.

52. A composite stent-graft device according to claim 51, wherein said bio-compatible metal is selected from the group consisting of stainless steel, platinum, gold, nitinol, tantalum and alloys thereof.

53. A composite stent-graft device according to claim 44, wherein said first and second tubes are bio-compatible.

54. A composite stent-graft device according to claim 53, wherein said first and second tubes are expanded polytetrafluoroethylene.