System and method of pivoted stent deployment

• US 8,066,755 B2
• Filed: 09/26/2007
• Issued: 11/29/2011
• Est. Priority Date: 09/26/2007
• Status: Active Grant

• Current Assignee: Endologix
• Original Assignee: Trivascular Incorporated
• Inventors: Aristizabal, Diego, Mohn, Michael, Zacharias, Isaac J., Chobotov, Michael V.
• Primary Examiner(s): Matthews; William H
• Assistant Examiner(s): Woznicki; Jacqueline
• Application Number:
  US11/861,716
• Publication Number:
  US 20090082844A1
• Time in Patent Office: 1,525 Days
• Field of Search: 623 135- 136, 623/1.11, 606/108
• 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 2/91 made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
• CPC Class Codes: A61F 2/915 with bands having a meander structure, adjacent bands being connected to each other
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2002/075 the stent being loosely attached to the graft material, e.g. by stitching
• CPC Class Codes: A61F 2002/91558 connected peak to peak
• CPC Class Codes: A61F 2002/9505 having retaining means other than an outer sleeve, e.g. male-female connector between stent and instrument
• CPC Class Codes: A61F 2002/9511 the retaining means being filaments or wires
• CPC Class Codes: A61F 2002/9534 for repositioning of stents
• CPC Class Codes: A61F 2220/0016 with sharp anchoring protrusions, e.g. barbs, pins, spikes
• CPC Class Codes: A61F 2230/005 Rosette-shaped, e.g. star-shaped
• CPC Class Codes: A61F 2230/0054 V-shaped
• CPC Class Codes: A61F 2230/0067 conical

Abstract

The invention provides a stent-graft system comprising a graft member and a stent having a connection end interconnected with the graft member and a free end opposed thereto. A belt retaining structure is provided at the stent free end. A belt is releasably retained in the belt retaining structure and is configured to constrain the stent free end independent of the stent connection end. A method of securing at least one end of a stent-graft within a vessel is also provided.

Claims

1. A stent-graft system comprising:

a graft member;

a stent having a connection end interconnected with the graft member and a free end opposed thereto;

a belt retaining structure provided at the stent free end;

a belt releasably engaging the belt retaining structure and configured to constrain the stent free end substantially independent of the stent connection end; and

a pivot fitting configured to retain the belt about the belt retaining structure such that the belt pivotally secures the stent free end to the pivot fitting.

2. The stent-graft system according to claim 1 wherein the pivot fitting is attached to a graft delivery member.

3. The stent-graft system according to claim 2 wherein the pivot fitting includes an axial bore configured to receive the graft delivery member.

4. The stent-graft system according to claim 1 wherein the pivot fitting includes a radial belt support member with a circumferential groove configured to receive the belt.

5. The stent-graft system according to claim 4 wherein the radial belt support member includes a plurality of radial slots configured to receive respective portions of the stent free end.

6. The stent-graft system according to claim 4 wherein the pivot fitting includes an area of reduced cross section configured to receive the belt retaining structure and a diameter of the stent connection end in the partially deployed state is determined at least in part by the relationship of an outer diameter of the area of reduced cross section and an inner diameter of the circumferential groove.