THORACIC AORTA STENT GRAFT WITH ACCESS REGION

• US 20110257731A1
• Filed: 08/25/2009
• Published: 10/20/2011
• Est. Priority Date: 08/26/2008
• Status: Active Grant

• Current Assignee: Cleveland Clinic Foundation, Cook Medical Incorporated (Cook Group Incorporated)
• Original Assignee: Cook Medical Incorporated (Cook Group Incorporated)
• Inventors: Lawrence-Brown, Michael, Hartley, David E, Ivancev, Krasnodar, Greenberg, Roy K.
• Granted Patent: US 9,101,456 B2
• Time in Patent Office: Days
• US Class Current: 623/1.35
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/856 Single tubular stent with a side portal passage
• 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 2002/065 Y-shaped blood vessels
• CPC Class Codes: A61F 2002/067 modular
• CPC Class Codes: A61F 2002/075 the stent being loosely attached to the graft material, e.g. by stitching
• CPC Class Codes: A61F 2002/821 Ostial stents
• CPC Class Codes: A61F 2250/0039 differing in diameter

Abstract

A stent graft (2) for placement in the thoracic arch of a patient has a first tubular body portion (6) with a first lumen therein for placement in the ascending aorta of a patient and a second tubular body portion (8) to extend along the thoracic arch and down the descending aorta. The second tubular body portion is of a lesser diameter than the first tubular body portion. There is a step portion (10) between the first body portion and the second body portion. The step portion is joined to and continuous with the first portion and the second portion. A first side of each of the first body portion, the step portion and the second body portion are substantially aligned so that there is a step (18) defined on a second side opposite to the first side of the body portion. There is an aperture (30) in the step portion and an internal tube (32) extending from the aperture towards the first body portion. The internal tube is divided along part of its length into at least two smaller internal tubes (34, 36) with the smaller internal tubes opening into the first lumen.

Claims

1-32. -32. (canceled)

33. A stent graft for placement in the thoracic arch of a patient, the stent graft comprising a first tubular body portion having a lumen and a second tubular body portion, the second tubular body portion having a smaller diameter than the first tubular body portion, the second tubular body portion having at least one aperture for receiving a side branch stent graft such that when the stent graft is curved during deployment, the at least one aperture is located on or adjacent the outside of the curve,

wherein the aperture opens into a recess and said recess extends proximally towards the first tubular body portion, and

wherein the recess opens at its proximal end into at least two tubes which extend towards the proximal end of the stent graft.

34. A stent graft for placement in the thoracic arch of a patient, the stent graft comprising a first tubular body portion having a lumen and a second tubular body portion, the second tubular body portion having a smaller diameter than the first tubular body portion, the second tubular body portion having at least one aperture for receiving a side branch stent graft such that when the stent graft is curved during deployment, the at least one aperture is located on or adjacent the outside of the curve,

further comprising an internal tube extending from the aperture towards the first body portion,

wherein the internal tube is divided along part of its length into at least two smaller internal tubes, the at least two smaller internal tubes opening into the lumen of the first body portion.

35. A stent graft as claimed in claim 34 wherein the smaller internal tubes each have a diameter in the range of from 6 to 12 mm.

36. A stent graft as claimed in claim 34 wherein the smaller internal tubes each comprise stent reinforcement.

37. A stent graft as claimed in claim 34 wherein the two smaller internal tubes have diameters of 10 mm and 12 mm respectively.

38. A stent graft as claimed in claim 34 wherein one of the two smaller internal tubes has a diameter in the range of from 6 to 10 mm and the other of the two smaller internal tubes has a diameter in the range of from 8 to 12 mm.

39. A stent graft as claimed in claim 38 wherein the larger of the two smaller internal tubes is adjacent the wall of the first portion.

40. A stent graft as claimed in claim 34 wherein the proximal ends of the smaller tubes are joined to each other.

41. A stent graft as claimed in claim 34 wherein at least a part of the smaller tubes are joined to the side wall of the first portion.

42. A stent graft for placement in the thoracic arch of a patient, the stent graft comprising a first tubular body portion having a lumen and a second tubular body portion, the second tubular body portion having a smaller diameter than the first tubular body portion, the second tubular body portion having at least one aperture for receiving a side branch stent graft such that when the stent graft is curved during deployment, the at least one aperture is located on or adjacent the outside of the curve,

further comprising an internal tube extending from the aperture towards the first body portion,

wherein the internal tube is divided into three smaller internal tubes extending towards the proximal end of the stent graft.