Mobile external coupling with internal sealing cuff for branch vessel connection

• US 8,333,800 B2
• Filed: 04/29/2010
• Issued: 12/18/2012
• Est. Priority Date: 04/29/2010
• Status: Active Grant

• Current Assignee: Medtronic Vascular, Inc. (Medtronic Plc)
• Original Assignee: Medtronic Vascular, Inc. (Medtronic Plc)
• Inventors: Bruszewski, Walter, Muzslay, Heath, Johnson, Emilie, Boyle, Kevin, Iftekhar, Mohammed, Robaina, Samuel
• Primary Examiner(s): Koharski, Christopher D
• Assistant Examiner(s): STEWART, JASON-DENNIS NEILKEN
• Application Number:
  US12/770,536
• Publication Number:
  US 20110270378A1
• Time in Patent Office: 964 Days
• Field of Search: 623/1.15, 623/1.13, 623/1.35
• US Class Current: 623/1.35
• 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 2002/061 provided with means for allowing access to secondary lumens
• CPC Class Codes: A61F 2002/075 the stent being loosely attached to the graft material, e.g. by stitching
• CPC Class Codes: A61F 2220/005 using adhesives
• CPC Class Codes: A61F 2220/0058 soldered or brazed or welded
• CPC Class Codes: A61F 2220/0075 sutured, ligatured or stitched, retained or tied with a rope, string, thread, wire or cable
• CPC Class Codes: A61F 2250/006 modular

Abstract

An endovascular prosthesis includes a tubular body and a mobile external coupling. The tubular body includes a graft material and stents coupled thereto, a forms a lumen therethrough. The mobile external coupling extends outwardly from the tubular body. The mobile external coupling includes a graft material and is generally frustoconically shaped. The mobile external coupling includes a base coupled to the tubular body, a top spaced from the tubular body, and a coupling lumen disposed between the base and the top, wherein the coupling lumen is in flow communication with the body lumen. A cylindrical sealing cuff of graft material is attached to and extends from the top of the mobile external coupling towards the tubular body within the coupling lumen. The sealing cuff is configured to contact a portion of a branch vessel prosthesis and thereby provides an elongated interference seal between the branch vessel prosthesis and the mobile external coupling.

Claims

1. An endovascular prosthesis having a radially collapsed configuration and a radially expanded configuration comprising:

a tubular body having a proximal end, a distal end, and a lumen disposed between the proximal and distal ends, the tubular body including a body graft material and a plurality of stents coupled to the body graft material;

a mobile external coupling extending outwardly from the tubular body in the radially expanded configuration, wherein the mobile external coupling is generally frustoconically shaped and includes a base coupled to the tubular body, a top spaced from the tubular body, and a coupling lumen disposed between the base and the top, wherein the coupling lumen is in flow communication with the body lumen and wherein the mobile external coupling includes a coupling graft material; and

a sealing cuff attached to the top of the mobile external coupling in the radially collapsed configuration and the radially expanded configuration, the sealing cuff extending from the top of the mobile external coupling towards the tubular body within the coupling lumen in the radially expanded configuration, wherein the sealing cuff is formed from a graft material and is generally cylindrically shaped.

2. The prosthesis of claim 1, wherein the sealing cuff is a seamless woven tube of PET cloth.

3. The prosthesis of claim 1, wherein the sealing cuff is reinforced with a circumferential stent coupled thereto.

4. The prosthesis of claim 3, wherein the circumferential stent is formed from a shape memory material and formed into a sinusoidal configuration.

5. The prosthesis of claim 3, wherein the circumferential stent has a shape memory diameter that is at least 20% less than a diameter of the sealing cuff.

6. A main prosthesis and a branch vessel prosthesis assembly comprising:

a main prosthesis configured for placement in a main vessel, the main prosthesis having a main prosthesis radially compressed configuration and a main prosthesis radially expanded configuration, the main prosthesis including a tubular body and a mobile external coupling, the tubular body having a proximal end, a distal end, a body lumen disposed between the proximal and distal ends, and a body graft material, the mobile external coupling extending outwardly from the tubular body in the main prosthesis radially expanded configuration, and the mobile external coupling including a generally frustoconically shaped coupling graft material and including a coupling lumen in flow communication with the body lumen, wherein the mobile external coupling includes a base coupled to the tubular body and a top spaced from the tubular body;

a branch vessel prosthesis configured for placement in a branch vessel that extends from the main vessel, the branch prosthesis having a branch prosthesis radially compressed configuration and a branch prosthesis radially expanded configuration, the branch vessel prosthesis including an outer surface; and

a cylindrical sealing cuff attached to the top of the mobile external coupling in the main prosthesis radially compressed configuration and the main prosthesis radially expanded configuration, the sealing cuff extending from the top of the mobile external coupling towards the tubular body within the coupling lumen in the main prosthesis radially expanded configuration, wherein the sealing cuff overlaps a proximal portion of the branch vessel prosthesis such that the outer surface of the branch vessel prosthesis contacts an inner surface of the sealing cuff in the main prosthesis radially expanded configuration and the branch prosthesis radially expanded configuration.

7. The prosthesis of claim 6, wherein a diameter of the sealing cuff in the main prosthesis radially expanded configuration is smaller than a diameter of a portion of the branch vessel prosthesis that is not disposed within the sealing cuff in the branch prosthesis radially expanded configuration.

8. The prosthesis of claim 7, wherein the diameter of the sealing cuff is up to 30% smaller than the diameter of the portion of the branch vessel prosthesis that is not disposed within the sealing cuff.

9. The prosthesis of claim 6, wherein the sealing cuff is a seamless woven tube of PET cloth.

10. The prosthesis of claim 6, wherein the sealing cuff is reinforced with a circumferential stent coupled thereto.

11. The prosthesis of claim 10, wherein the circumferential stent is formed from a shape memory material and formed into a sinusoidal configuration.

12. The prosthesis of claim 10, wherein the circumferential stent has a shape memory diameter that is at least 20% less than a diameter of the sealing cuff.