Expandable stent and delivery system

• US 20060095213A1
• Filed: 12/12/2005
• Published: 05/04/2006
• Est. Priority Date: 09/23/2002
• Status: Abandoned Application

• Current Assignee: Codman & Shurtleff Incorporated (Johnson & Johnson)
• Original Assignee: Codman & Shurtleff Incorporated (Johnson & Johnson)
• Inventors: Mitelberg, Vladimir, Jones, Donald K., Escamilla, Angeli
• Application Number:
  US11/299,992
• Publication Number:
  US 20060095213A1
• Time in Patent Office: Days
• US Class Current: 702/22
• 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 17/12118 for positioning in conjunction with a stent
• CPC Class Codes: A61B 17/1214 Coils or wires
• CPC Class Codes: A61B 2017/1205 Introduction devices
• 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 2/966 with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
• CPC Class Codes: A61F 2002/823 Stents, different from stent-grafts, adapted to cover an aneurysm
• CPC Class Codes: A61F 2002/8486 provided on at least one of the ends
• CPC Class Codes: A61F 2002/91533 characterised by the phase between adjacent bands
• CPC Class Codes: A61F 2002/91541 Adjacent bands are arranged out of phase
• CPC Class Codes: A61F 2002/9155 Adjacent bands being connected to each other
• CPC Class Codes: A61F 2002/91558 connected peak to peak
• CPC Class Codes: A61F 2002/9665 with additional retaining means
• CPC Class Codes: A61F 2250/0098 radio-opaque, e.g. radio-opaque markers

Abstract

An expandable stent and delivery system is provided for enhancing luminal dilation of a blood vessel and treating aneurysms. 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 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 for 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 increase 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; and

,

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.