Expandable stent and delivery system

• US 6,960,227 B2
• Filed: 07/23/2004
• Issued: 11/01/2005
• Est. Priority Date: 06/24/2002
• Status: Expired due to Term

• Current Assignee: Codman & Shurtleff Incorporated (Johnson & Johnson)
• Original Assignee: Cordis Neurovascular, Inc. (Johnson & Johnson)
• Inventors: Mitelberg, Vladimir, Jones, Donald K.
• Primary Examiner(s): SNOW, BRUCE EDWARD
• Application Number:
  US10/897,916
• Publication Number:
  US 20040260385A1
• Time in Patent Office: 466 Days
• Field of Search: 623/1.11, 623/1.15, 623/1.23, 623/1.36, 606/108, 606/194
• US Class Current: 623/1.11
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2002/8486 provided on at least one of the ends
• CPC Class Codes: A61F 2002/9665 with additional retaining means

Abstract

An expandable stent and delivery system is provided for enhancing luminal dilation of a blood vessel. The delivery system includes proximal, intermediate and distal cylindrical members disposed on and spaced apart along an elongated core member such that first and second gaps are formed. The expandable stent includes proximal and distal anchor members which align with the gaps. The expandable stent is mounted on the intermediate cylindrical member, and the anchor members are disposed within the gaps thereby locking the stent onto the core member.

Claims

1. A method or deploying an expandable stent within a blood vessel to enhance luminal dilation of the blood vessel, the method comprising the steps of:

providing an expandable stent and delivery system, said expandable stent mounted on at least one cylindrical member along a core member of said delivery system, said stent having at least one anchor member interlocked within at least one gap along said core member, said gap formed by spaces between a plurality of cylindrical members disposed on said core member, said delivery system including a deployment catheter disposed about said stent maintaining said stent in a constrained configuration;

inserting said expandable stent and delivery system into a blood vessel;

positioning said expandable stent adjacent to a blockage area within said vessel;

moving said deployment catheter proximally allowing said stent to begin expanding within said vessel;

further moving said deployment catheter proximally allowing said stent to fully deploy causing said vessel to in crease luminal dilation; and

,

removing said delivery system from said blood vessel.

2. A method for deploying an expandable stent within a blood vessel to treat an aneurysm, the method comprising the steps of:

providing an expandable stent and delivery system, said expandable stent mounted on at least one cylindrical member along a core member of said delivery system, said stent having at least one anchor member interlocked within at least one gap along said core member, said gap formed by spaces between a plurality of cylindrical members disposed on said core member, said delivery system including a deployment catheter disposed about said stent maintaining said stent in a constrained configuration;

inserting said expandable stent and delivery system into a blood vessel;

positioning said expandable stent adjacent to an aneurysm;

moving said deployment catheter proximally allowing said stent to begin expanding within said vessel;

further moving said deployment catheter proximally allowing said stent to fully deploy causing said aneurysm to be covered by said stent; and

,

removing said delivery system from said blood vessel.

3. A method for resheathing an expandable stent within a blood vessel, said method comprising the steps of:

providing an expandable stent and delivery system, said expandable stent mounted on at least one cylindrical member along a core member of said delivery system, said stent having at least one anchor member interlocked within at least one gap along said core member, said gap formed by spaces between a plurality of cylindrical members disposed on said core member, said delivery system including a deployment catheter disposed about said stent maintaining said stent in a constrained configuration;

inserting said expandable stent and delivery system into a blood vessel;

positioning said expandable stent adjacent to a blockage area within said vessel;

moving said deployment catheter proximally allowing said stent to begin expanding within said vessel;

moving said deployment catheter distally forcing said stent back onto said cylindrical member of said delivery system; and

,

relocating said expandable stent and delivery system.