STENT GRAFT ADAPTOR

• US 20130297001A1
• Filed: 03/13/2013
• Published: 11/07/2013
• Est. Priority Date: 05/02/2012
• Status: Active Grant

• Current Assignee: Cook Medical Technologies, LLC (Cook Group Incorporated)
• Original Assignee: Cook Medical Technologies, LLC (Cook Group Incorporated)
• Inventors: Kasprzak, Piotr Miroslaw, Ducke, Werner Dieter, Hartley, David Ernest, Roeder, Blayne A.
• Granted Patent: US 9,149,372 B2
• Time in Patent Office: Days
• US Class Current: 623/1.12
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/848 having means for fixation to the vessel wall, e.g. barbs
• 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 2/962 having an outer sleeve
• CPC Class Codes: A61F 2/966 with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
• CPC Class Codes: A61F 2002/061 provided with means for allowing access to secondary lumens
• CPC Class Codes: A61F 2002/077 having means to fill the space between stent-graft and aneurysm wall, e.g. a sleeve
• CPC Class Codes: A61F 2002/8483 Barbs
• CPC Class Codes: A61F 2002/9511 the retaining means being filaments or wires
• CPC Class Codes: A61F 2250/006 modular

Abstract

A stent graft adaptor has an outer graft tube and an inner graft tube with the inner graft tube substantially concentric with and within the outer graft tube. A joining member extends between the inner tube and the outer tube. The s joining member can be a continuous fold of graft material extending from a proximal end of the outer tube to a proximal end of the inner tube. The inner tube has at least one self expanding stent on an outer surface thereof and the outer graft tube has at least one self expanding stent on an inner surface. The outer surface of the outer tube provides a sealing surface to engage against the wall of a vessel and the inner tube provides a sealing surface to engage with a corresponding sealing surface of a stent graft deployed through it. The outer sealing surface can include barbs.

Claims

1. A stent graft adaptor comprising an outer graft tube and an inner graft tube, the outer graft tube being substantially concentric with the inner graft tube, the inner graft tube and the outer graft tube defining an annular region therebetween and a joining member extending between the inner graft tube and the outer graft tube and the joining member closing off the annular region to prevent fluid flow through the annular region, wherein the inner graft tube comprises at least one self expanding stent on an outer surface thereof and the outer graft tube comprises at least one self expanding stent on an inner surface thereof.

2. A stent graft adaptor as in claim 1 wherein an outer surface of the outer graft tube comprises a sealing surface to engage against the wall of a vessel and the inner tube comprises a sealing surface to engage with a corresponding sealing surface of a stent graft deployed therethrough.

3. A stent graft adaptor as in claim 1 wherein the joining member comprises a continuous fold of graft material extending from a first end of the outer tube to a first end of the inner tube.

4. A stent graft adaptor as in claim 1 wherein the joining member comprises an annular portion of graft material fastened to and extending from an inner surface of the outer graft tube to and fastened to an outer surface of the inner graft tube.

5. A stent graft adaptor as in claim 4 wherein the annular portion of graft material extends between the outer tube and the inner tube at a location between the ends of the outer tube and the inner tube.

6. A stent graft adaptor as in claim 1 comprising barbs extending outwards from the outer graft tube in use to engage with the wall of a vessel into which the adaptor is deployed.

7. A stent graft adaptor as in claim 1 wherein the outer graft tube comprises a diameter of up to 46 mm to fit in most descending aortas and the inner graft tube comprises a diameter of 32 mm to mate with an interference fit into a 34 mm thoracoabdominal device and the outer graft tube comprises a length of about 50 mm.

8. A stent graft adaptor comprising an outer graft tube and an inner graft tube, the outer graft tube being substantially concentric with the inner graft tube, the outer graft tube and the inner graft tube defining an annular region therebetween and a joining member extending between the inner graft tube and the outer graft tube and the joining member closing off the annular region to prevent fluid flow through the annular region, the joining member comprising a continuous fold of graft material extending from a proximal end of the outer tube to a proximal end of the inner tube, the inner graft tube comprising at least one self expanding stent on an outer surface thereof and the outer graft tube comprising at least one self expanding stent on an inner surface thereof, whereby an outer surface of the outer graft tube provides a sealing surface to engage against the wall of a vessel and the inner tube provides a sealing surface to engage with a corresponding sealing surface of a stent graft deployed therethrough.

9. A stent graft adaptor as in claim 8 comprising barbs extending outwards from the outer graft tube in use to engage with the wall of a vessel into which the adaptor is deployed.

10. A stent graft adaptor in combination with a introducer,

the introducer comprising a pusher, the pusher comprising a proximal end to be introduced into a patient and a distal end, a dilator at the proximal end of the pusher and a first temporary retention arrangement on the pusher distal of the dilator,

the stent graft adaptor comprising an outer graft tube and an inner graft tube, the outer graft tube being substantially concentric with the inner graft tube, the inner graft tube having a first diameter and a proximal end and a distal end, the outer graft tube having a second diameter and a proximal end and a distal end, the first diameter being smaller than the second diameter, a joining member extending between the proximal end of the inner graft tube and the proximal end of the outer graft tube, the inner graft tube comprises one self expanding stent on an outer surface thereof and the outer graft tube comprises at least one self expanding stent on an inner surface thereof, the stent on the inner graft tube being at a distal end of the inner graft tube,

the stent graft adaptor being mounted onto the introducer with the distal end of the inner tube and the stent of the inner tube retained distally of the dilator by the first temporary retention arrangement and the joining member and the outer graft extending tube distally thereof.

11. A stent graft adaptor in combination with a introducer as in claim 10 further including a second temporary retention arrangement distal of the first retention arrangement, the distal end of the outer tube being temporarily retained by the second temporary retention arrangement.

12. A stent graft adaptor in combination with a introducer as in claim 10 comprising barbs extending outwards from the outer graft tube in use to engage with the wall of a vessel into which the adaptor is deployed.