Staged deployment endograft

• US 7,101,390 B2
• Filed: 05/27/2003
• Issued: 09/05/2006
• Est. Priority Date: 05/27/2003
• Status: Expired due to Fees

• Current Assignee: Lifeport Sciences LLC (Acacia Research Corporation)
• Original Assignee: Scimed Life Systems Incorporated (Boston Scientific Corporation)
• Inventors: Nelson, Kristoff
• Primary Examiner(s): GHERBI, SUZETTE JAIME J
• Application Number:
  US10/445,406
• Publication Number:
  US 20040243215A1
• Time in Patent Office: 1,197 Days
• Field of Search: 623 111- 135
• US Class Current: 623/1.12
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/844 folded prior to deployment
• 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 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• 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 2002/075 the stent being loosely attached to the graft material, e.g. by stitching
• CPC Class Codes: A61F 2002/8483 Barbs
• CPC Class Codes: A61F 2002/9511 the retaining means being filaments or wires
• CPC Class Codes: A61F 2220/005 using adhesives
• CPC Class Codes: A61F 2220/0066 stapled
• 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 2230/001 Figure-8-shaped, e.g. hourglass-shaped
• CPC Class Codes: Y10S 623/903 Blood vessel

Abstract

An apparatus is provided for deploying an endograft that maintains a fluid channel throughout deployment. A method for deploying an endograft maintaining a fluid channel through the deployment is also provided.

Claims

1. A tubular endograft adapted to be radially compressed in a first delivery configuration for endoluminal delivery and radially expanded to a second deployment configuration following endoluminal delivery, comprising:

a plurality of longitudinal portions each radially disposed from and substantially parallel to the axis of the tubular endograft and extending along the full length of the endograft, the longitudinal portions collectively forming a common longitudinal lumen therethrough in the expanded configuration; and

at least one releasable restraining member operatively associated with a select one of said plurality of longitudinal portions of said endograft, said at least one of releasable restraining member adapted to selectively constrain expansion of the associated longitudinal portion along the full length of said endograft while allowing expansion of unconstrained longitudinal portions of said endograft along the full length thereof.

2. The endograft of claim 1 wherein said at least one restraining member comprises two or more individual restraining members and said individual restraining members are separately releasable.

3. The endograft of claim 1 further comprising a self-expanding stent scaffold and a covering affixed to said stent scaffold;

wherein said restraining member or members is or are entwined in said stent scaffold in the delivery configuration thereof.

4. The endograft of claim 3 wherein said restraining member or members is or are wires.

5. The endograft of claim 3 wherein said restraining member or members is or are sutures.

6. The endograft of claim 3 wherein said at least one restraining member comprises a rod-like element.

7. The endograft of claim 1 wherein said restraining member or members is or are flexible tubes.

8. The endograft of claim 1 further comprising barbs for anchoring said endograft to a body lumen wall.

9. An endograft comprising:

a self-expanding stent scaffold with a covering affixed thereto said scaffold having at least two portions extending in parallel along the full length of the stent; and

at least one releasable restraining member disposed lengthwise over an associated portion of said stent scaffold along the full length thereof and adapted to selectively constrain the associated portions from circumferential expansion along the full length thereof;

the endograft having at least a first configuration in which said endograft is constrained in a circumferentially compressed configuration suitable for endoluminal deployment, a second configuration in which said at least one restraining member selectively constrains the associated portions of said endograft along the full length thereof and non-constrained portions of said endograft are radially expanded forming a fluid passageway therethrough along the full length of said endograft, and a fully deployed configuration in which said endograft is neither circumferentially nor selectively constrained.

10. The endograft of claim 9 wherein two releasable restraining members are disposed at diametrically opposite locations along the length of the endograft.

11. The endograft of claim 9 wherein said stent scaffold is sized and configured to allow said endograft to be repositioned in said second configuration.

12. The endograft of claim 9 wherein said endograft is constrained in said first configuration by a delivery sheath.

13. An endograft comprising:

a self-expanding stent scaffold with a covering affixed thereto; and

at least one releasable restraining member disposed lengthwise over an associated portion of said stent scaffold

the endograft having at least a first configuration in which said endograft is constrained in a compressed configuration suitable for endoluminal deployment, a second configuration in which said at least one restraining member radially constrains the associated portions of said endograft and non-selected portions of said endograft intermediate said associated portions are radially expanded forming a fluid passageway therethrough wherein said endograft provides a fluid channel outside of said covering adjacent said restraining members in said second configuration, and a third configuration in which said at least one restraining member is released and the respective associated portions are radially expanded forming an enlargement of said fluid passageway.

14. The endograft of claim 13 wherein said endograft provides a fluid channel outside of said endograft in said first configuration and during transition from said first configuration to said second configuration;

said endograft provides a fluid channel outside and through said endograft in said second configuration; and

said endograft provides a fluid channel through said endograft in said third configuration and during transition from said second configuration to said third configuration.