Single-piece endoprosthesis with high expansion ratios and atraumatic ends

• US 7,740,653 B1
• Filed: 04/20/2005
• Issued: 06/22/2010
• Est. Priority Date: 04/11/2000
• Status: Expired due to Fees

• Current Assignee: Abbott Vascular Solutions, Inc. (Abbott Laboratories)
• Original Assignee: Abbott Vascular Solutions, Inc. (Abbott Laboratories)
• Inventors: Newhauser, Richard, Iancea, Octavian, Pollock, David T.
• Primary Examiner(s): Bui; Vy Q
• Application Number:
  US11/110,999
• Time in Patent Office: 1,889 Days
• Field of Search: 623/1.15, 623/1.25, 623/1.13, 606/108, 606/191, 606/198
• US Class Current: 623/1.15
• 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 2/915 with bands having a meander structure, adjacent bands being connected to each other
• CPC Class Codes: A61F 2002/075 the stent being loosely attached to the graft material, e.g. by stitching
• CPC Class Codes: A61F 2002/91508 the meander having a difference in amplitude along the band
• CPC Class Codes: A61F 2002/91516 the meander having a change in frequency along the band
• CPC Class Codes: A61F 2002/91533 characterised by the phase between adjacent bands
• CPC Class Codes: A61F 2002/91541 Adjacent bands are arranged out of phase
• CPC Class Codes: A61F 2002/91558 connected peak to peak
• CPC Class Codes: A61F 2002/91575 connected peak to trough
• CPC Class Codes: A61F 2230/0013 Horseshoe-shaped, e.g. crescent-shaped, C-shaped, U-shaped

Abstract

A new endoluminal prosthesis for use in sealing a vascular graft to corporeal lumen provides for a flattened bulbous tail at the end of each cell of the prosthesis. The flattened bulbous tails reduce the amount of wear between the prosthesis and the softer material of the vascular grafts or corporeal lumen walls. A method of manufacturing a stent from a flat sheet of material is also included.

Claims

1. A vascular graft assembly, comprising:

a tubular graft having a first end region and a second end region;

at least one prosthesis having,

a plurality of cells defined by struts having a first width, each cell having a bottom end and a top end,

a flattened bulbous tail at the bottom end of at least more than one of the cells, and

a flattened bulbous tail at the top end of at least more than one of the cells; and

the at least one prosthesis being located at the first end region of the graft with the bottom end of each cell of the prosthesis positioned inside the tubular graft and the top end of each cell of the prosthesis positioned beyond the first end region and external the tubular graft, wherein each of the flattened bulbous tails has a perimeter and a continuous lateral surface bounded by the perimeter, the continuous lateral surface defining a second width greater than the first width.

2. The vascular graft of claim 1, wherein the bottom end of each cell of the at least one prosthesis includes a flattened bulbous tail.

3. The vascular graft of claim 1, wherein the top end of each cell of the at least one prosthesis includes a flattened bulbous tail.

4. The vascular graft of claim 1, the flattened bulbous tails of the at least one prosthesis contouring into the body of the prosthesis.

5. The vascular graft of claim 1, wherein adjacent flattened bulbous tails of the at least one prosthesis are staggered longitudinally.

6. The vascular graft of claim 1, the at least one prosthesis further comprising:

a substantially rounded edge about the circumference of the at least one prosthesis at the bottom end; and

a substantially rounded edge about the circumference of the at least one prosthesis at the top end.

7. The vascular graft of claim 1, the at least one prosthesis further comprising:

a substantially chamferred edge about the circumference of the at least one prosthesis at the bottom end; and

a substantially chamferred edge about the circumference of the at least one prosthesis at the top end.