Apparatus for engrafting a blood vessel

• US 8,133,267 B2
• Filed: 03/01/2010
• Issued: 03/13/2012
• Est. Priority Date: 10/30/1995
• Status: Expired due to Fees

• Current Assignee: Medtronic Vascular, Inc. (Medtronic Plc)
• Original Assignee: Medtronic Vascular, Inc. (Medtronic Plc)
• Inventors: Leonhardt, Howard J., Taheri, Syde A., Greenan, Trevor
• Primary Examiner(s): Sweet, Thomas J
• Assistant Examiner(s): STEWART, JASON-DENNIS NEILKEN
• Application Number:
  US12/715,130
• Publication Number:
  US 20100217383A1
• Time in Patent Office: 743 Days
• Field of Search: 623 114- 116, 623/1.35
• US Class Current: 623/1.13
• CPC Class Codes: A61B 17/12022 Occluding by internal devices, e.g. balloons or releasable wires plugging an opening in the wall of an organ A61B17/0057; occluders for the cervical canal A61F6/146; vas deferens occluders A61F6/20
• CPC Class Codes: A61B 17/12109 in a blood vessel
• CPC Class Codes: A61B 17/12118 for positioning in conjunction with a stent
• CPC Class Codes: A61B 17/12172 having a pre-set deployed three-dimensional shape methods of manufacturing A61B2017/00526
• CPC Class Codes: A61B 17/12181 formed by fluidized, gelatinous or cellular remodelable materials, e.g. embolic liquids, foams or extracellular matrices
• CPC Class Codes: A61B 17/12186 liquid materials adapted to be injected
• CPC Class Codes: A61B 17/1219 expandable in contact with liquids
• CPC Class Codes: A61B 17/12195 comprising a curable material
• 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 2/9517 handle assemblies therefor
• CPC Class Codes: A61F 2/9522 Means for mounting a stent or stent-graft onto or into a placement instrument
• CPC Class Codes: A61F 2/954 for placing stents or stent-grafts in a bifurcation
• CPC Class Codes: A61F 2/958 Inflatable balloons for placing stents or stent-grafts
• CPC Class Codes: A61F 2002/065 Y-shaped blood vessels
• CPC Class Codes: A61F 2002/075 the stent being loosely attached to the graft material, e.g. by stitching
• CPC Class Codes: A61F 2002/30092 using shape memory or superelastic materials, e.g. nitinol
• CPC Class Codes: A61F 2002/30448 using adhesives
• CPC Class Codes: A61F 2002/9511 the retaining means being filaments or wires
• CPC Class Codes: A61F 2210/0014 using shape memory or superelastic materials, e.g. nitinol
• CPC Class Codes: A61F 2220/005 : using adhesives
• CPC Class Codes: A61F 2250/0007 : for adjusting length
• CPC Class Codes: A61M 2025/004 : characterized by lumina being arranged circumferentially
• CPC Class Codes: A61M 2025/09183 : having tools at the distal tip
• CPC Class Codes: A61M 2025/1052 : for temporarily occluding a vessel for isolating a sector
• CPC Class Codes: A61M 2205/0266 : Shape memory materials
• CPC Class Codes: A61M 2210/127 : Aorta
• CPC Class Codes: A61M 25/1011 : Multiple balloon catheters
• CPC Class Codes: A61M 25/10184 : Means for controlling or monitoring inflation or deflation
• CPC Class Codes: A61M 29/02 : Dilators made of swellable material balloon catheters for angioplasty A61M25/104

Abstract

The present invention relates to an apparatus for deploying an endoluminal prosthesis for engrafting a blood vessel. The apparatus includes a bifurcated graft that is able to conform to the interior surface of the blood vessel and can be deployed through a single entry site.

Claims

1. A bifurcated graft, comprising:

a primary limb, the primary limb including a first wire spring coupled to a graft material, the first wire spring including a first proximal spring portion coupled to a proximal portion of the graft material, a first distal spring portion coupled to a distal portion of the graft material, and a first axially extending connecting bar connecting the proximal spring portion and the distal spring portion;

a lateral limb coupled to the primary limb, the lateral limb including a second wire spring coupled to a graft material, the second wire spring including a second proximal spring portion coupled to a proximal portion of the lateral limb graft material, a second distal spring portion coupled to a distal portion of the lateral limb graft material, and a second axially extending connecting bar connecting the second proximal spring portion and the second distal spring portion; and

an extension graft coupled to the lateral limb, the extension graft including a third wire spring coupled to a graft material, the third wire spring including a third proximal spring portion coupled to the extension graft material and disposed between the second proximal spring portion and the second distal spring portion, a third distal spring portion coupled to the extension graft material and disposed distal of the second distal spring portion, and an axially extending connecting bar connecting the third proximal spring portion and the third distal spring portion.

2. The graft of claim 1, further comprising an adjustable length portion extending coaxially from a distal end of the extension graft.

3. The graft of claim 2, wherein the adjustable length portion includes a crimped length of graft material.

4. The graft of claim 3, wherein the adjustable length portion further includes a distal spring portion disposed at a distal portion of the adjustable length portion.

5. A bifurcated graft, comprising:

a primary limb including a primary limb tubular graft material having a primary limb interior surface, a primary limb proximal end and a primary limb distal end, a primary limb proximal spring coupled to the primary limb interior surface adjacent the primary limb proximal end such that the primary limb proximal spring is disposed completely within the primary limb tubular graft material, and a primary limb distal spring coupled to the primary limb interior surface adjacent the primary limb distal end such that the primary limb distal spring is disposed completely within the primary limb tubular graft material;

a lateral limb coupled to the primary limb and including a lateral limb tubular graft material having a lateral limb interior surface, a lateral limb proximal end and a lateral limb distal end, the lateral limb proximal end being coupled to the primary limb distal end, a lateral limb proximal spring coupled to the lateral limb interior surface adjacent the lateral limb proximal end such that the lateral limb proximal spring is disposed completely within the lateral limb tubular graft material, and a lateral limb distal spring coupled to the lateral limb interior surface adjacent the lateral limb distal end such that the lateral limb distal spring is disposed completely within the lateral limb tubular graft material; and

a separate extension graft coupled to the lateral limb,

wherein the extension graft includes an extension tubular graft material having an extension interior surface, an extension proximal end and an extension distal end, an extension proximal spring coupled to the extension interior surface adjacent the proximal end, and an extension distal spring coupled to the extension interior surface,

an adjustable length portion extending coaxially from the extension distal end, wherein the adjustable length portion further includes a distal spring portion disposed at a distal portion of the adjustable length portion.

6. The graft of claim 5, wherein the primary limb proximal spring and the lateral limb distal spring comprise a continuous zig-zag pattern of straight spoke connected by alternating crests and troughs.

7. The graft of claim 5, wherein the primary limb graft material is cut out between the crests of the primary limb proximal spring and the lateral limb graft material is cut out between the crests of the lateral limb distal spring to define a plurality of radially distensible finger portions.

8. The graft of claim 5, further comprising an adjustable length portion extending coaxially from a distal end of the extension graft.