Device for treating aortic dissection

• US 7,993,383 B2
• Filed: 09/28/2005
• Issued: 08/09/2011
• Est. Priority Date: 09/28/2004
• Status: Active Grant

• Current Assignee: Cook Medical Incorporated (Cook Group Incorporated)
• Original Assignee: Cook Medical Incorporated (Cook Group Incorporated), William A. Cook Australia Pty. Ltd (Cook Group Incorporated)
• Inventors: McIntyre, Thomas C., Hartley, David Ernest, Rasmussen, Erik E.
• Primary Examiner(s): Erezo; Darwin P.
• Assistant Examiner(s): RYCKMAN, MELISSA K
• Application Number:
  US11/237,120
• Publication Number:
  US 20060142836A1
• Time in Patent Office: 2,141 Days
• Field of Search: 623/1.11, 623/1.12, 623/1.23, 623/1.49, 623/1.54, 623/1.35, 623/1.5, 623/1.51, 606/108
• US Class Current: 623/1.11
• 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 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2/9661 the proximal portion of the stent or stent-graft is released first
• CPC Class Codes: A61F 2/9662 the middle portion of the stent or stent-graft is released first
• CPC Class Codes: A61F 2002/826 more than one stent being applied sequentially
• 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 2002/9665 with additional retaining means
• 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 2230/0067 conical

Abstract

A stent assembly (42) adapted for endoluminal placement by endovascular deployment for the treatment of a false lumen (10) associated with a vascular dissection. The stent assembly has a number of self expanding stents (35) connected together to define an elongate substantially cylindrical lumen wall engaging surface. The stents are adapted to provided pressure on the wall of the lumen adjacent to and extending away from a rupture. A deployment device (40) for the stent assembly includes a sheath (48) and a retention and release arrangement (50) to retain the proximal end (37) of the stent graft to the deployment device. Release of the stent assembly is by withdrawal of the sheath before release of its proximal end by the use of a trigger wire (54) of the retention and release arrangement.

Claims

1. An endovascular system for the treatment of aortic dissection in an aorta comprising in combination a deployment device and a stent assembly, the stent assembly comprising a proximal end, a plurality of self expanding zig zag stents and a link arrangement between adjacent stents so that the stents are linked together thereby defining an elongate substantially cylindrical lumen wall engaging surface, each stent having a plurality of struts and bends between the struts and the link arrangement comprising at least one of a biocompatible thread or fiber and knots which are knotted alternately to a bend of one stent and then a bend of an adjacent stent to provide a link thread of zig zag configuration, and the deployment device comprising an elongate catheter to be deployed over a guide wire, a nose cone at the proximal end of the elongate catheter and a trigger wire arrangement to retain the proximal end of the stent assembly just distal of the nose cone, wherein the trigger wire arrangement comprises at least one trigger wire extending through the deployment catheter and the trigger wire engaging with the proximal end of the stent assembly, the proximal end of the stent assembly comprising a proximal stent and the proximal stent comprising proximal bends, a circumferential biocompatible thread extending through the proximal bends and including thread portions between adjacent bends of the proximal end of the proximal stent and the engagement of the trigger wire with the stent assembly comprises the thread portions between adjacent bends extending around the trigger wire.

2. An endovascular system as in claim 1 wherein the stents are formed from a material selected from the group comprising stainless steel or Nitinol.

3. An endovascular system as in claim 1 comprising three trigger wires extending through the deployment catheter and each of the trigger wires engaging with a proportion the thread portions between adjacent bends.