Bifurcated medical device for treating a target site and associated method

Patent metadata

Field	Value
Publication number	US-2016367355-A1
Application number	US-201615255233-A
Country	US
Kind code	A1
Filing date	Sep 2, 2016
Priority date	Sep 5, 2008
Publication date	Dec 22, 2016
Grant date	—

Abstract

Embodiments of the present invention provide medical devices and methods for treating a target site within the body. For example, one embodiment provides a stent graft for treating a target site proximate to a bifurcated lumen, wherein the stent graft includes a first tubular structure having proximal and distal ends and a side wall extending therebetween. The first tubular structure includes an opening defined within the side wall and is configured to define a first portion having first and second ends and a second portion having first and second ends. The opening corresponds to the first ends of the first and second portions and the second ends of the first and second portions respectively correspond to the proximal and distal ends of the first tubular structure, and at least a portion of the first and second portions are configured to be positioned within respective branches of a bifurcated lumen.

First claim

1 - 41 . (canceled)

42 . A method for fabricating a stent graft comprising:
braiding a first tubular structure about a mandrel, the first tubular structure having a proximal end, and a distal end, and a sidewall extending therebetween; shaping the first tubular structure so as to form first and second portions each having first and second ends, wherein at least a portion of the first and second portions are configured to extend within respective braches of a bifurcated lumen; defining an opening within the sidewall, wherein the opening is configured to correspond to the first ends of the first and second portions; and heat setting the first tubular structure.

43 . The method of claim 42 , wherein braiding comprises braiding a plurality of strands into at least one layer.

44 . The method of claim 42 , wherein the first tubular structure comprises a corrugated surface.

45 . The method of claim 42 , wherein shaping comprises folding the first tubular structure along the opening.

46 . The method of claim 45 , wherein folding comprises folding the first tubular structure along the opening to define a hinge.

47 . The method of claim 42 , wherein defining comprises forming a cut partially about the circumference of the first tubular structure, and wherein shaping comprises folding the first tubular structure along the cut.

48 . The method of claim 42 , wherein defining comprises forming a cut partially about a circumference of the first tubular structure and within a bulbous portion positioned between the proximal end and the distal end of the first tubular structure.

49 . The method of claim 43 , wherein defining comprises displacing braided strands of the first tubular structure to define the opening.

50 . The method of claim 49 , wherein displacing braided strands of the first tubular structure defines the opening approximately midway between the proximal end and the distal end of the first tubular structure.

51 . The method of claim 42 , wherein heat setting comprises heat setting the first tubular structure about a pair of D-shaped pins to define the opening.

52 . The method of claim 42 , wherein shaping comprises shaping the first tubular structure along the opening such that the first and second portions comprise respective lumens extending between proximal and distal ends of the first and second portions that are not in fluid communication with one another.

53 . The method of claim 42 , further comprising:
coating the first tubular structure with a thrombogenic agent.

54 . The method of claim 42 , further comprising:
filling the first tubular structure with a polyester fiber.

55 . The method of claim 42 , further comprising:
attaching a radiopaque marker to at least one of the first end of the first portion and the first end of the second portion.

56 . The method of claim 42 , further comprising:
attaching one or more hooks to the first tubular structure for facilitating fixation of the first tubular structure to the bifurcated lumen.

57 . The method of claim 42 , further comprising:
braiding a second tubular structure on a mandrel, the second tubular structure comprising a proximal end and a distal end and lumen extending therebetween.

58 . The method of claim 57 , further comprising:
defining a pair of openings in the second tubular structure configured to receive the first tubular structure and align the lumen of the second tubular structure with the opening defined in the first tubular structure.

59 . The method of claim 58 , wherein defining the pair of openings comprises clamping the proximal end of the second tubular structure to define the pair of openings.

Assignees

• St Jude Medical Cardiology Div Inc

Inventors

• Ren Brooke
• Adams Daniel O
• Oslund John C

Classifications

• A61F2210/0076

  multilayered, e.g. laminated structures · CPC title

• A61F2/848

  having means for fixation to the vessel wall, e.g. barbs · CPC title

• A61F2/07 Primary

  Stent-grafts · CPC title

• A61F2250/0098

  radio-opaque, e.g. radio-opaque markers · CPC title

• A61F2240/001

  Designing or manufacturing processes · CPC title