Guidewire placement system for delivery of an aneurysm graft limb
AssigneeEndovascular Technologies, Inc.
InventorArnold Escano
Life of this patent
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Abstract
The present invention provides a guidewire placement system for delivery of an aneurysm graft limb. The invention is directed toward placement of grafts in abdominal aortic aneurysms where delivery of a contra-lateral limb is heretofore particularly difficult. The present invention provides external tubing which may be steered along with guide tubing having wire loops at the distal end thereof. The design of the external tubing and the guide tubing allow a contra-lateral guidewire to be directed toward and placed within a graft of the aneurysm. This allows for subsequent placement of a contra-lateral limb in an efficient and minimally invasive manner.
Claims44
An apparatus comprising:
- external tubing having a distal flexible region and a distal extension distal of said distal flexible region;
- steering wire secured to said distal extension to cause flexure of sid distal flexible region;
- and
- a protective drape about said steering wire and secured to said external tubing.
A placement system comprising:
- guide tubing;
- and
- wire loops disposed at a distal end of said guide tubing, said wire loops promoting accessibility of a graft and avoidance of an aneurysm wall by said guide tubing when said guide tubing is present within an aneurysm having a graft disposed within said aneurysm.
A method of providing a contra-lateral limb to a graft at a site of an aneurysm, said method comprising:
- advancing external tubing through vasculature to the site of the aneurysm, said external tubing having an advanced flexible region to flex via manipulation of a steering wire secured to said external tubing at a distal portion of said external tubing;
- manipulating said steering wire in order to direct a distal extension of said external tubing toward a proximal contra-lateral portion of said graft;
- inserting said external tubing into said graft through said proximal contra-lateral portion;
- and
- introducing a contra-lateral guidewire through a lumen of said external tubing and into said graft.
A method of providing a contra-lateral limb to a graft at the site of an aneurysm, said method comprising:
- advancing guide tubing through vasculature to the site of the aneurysm, said guide tubing having wire loops disposed at a distal end of said guide tubing, said wire loops promoting accessibility of said graft and avoidance of a wall of said aneurysm by said guide tubing;
- inserting said guide tubing into said graft through a proximal contra-lateral portion of said graft;
- and
- introducing a contra-lateral guidewire to said graft through said proximal contra-lateral portion.
A system for delivery of a graft to an aneurysm, said system comprising:
- a graft deployment balloon catheter having said graft disposed therein and deliverable to said aneurysm via an ipsilateral guidewire;
- a limb deployment balloon catheter having a contra-lateral limb disposed therein and deliverable to said aneurysm via a contra-lateral guidewire;
- and
- means for advancing said contra-lateral guidewire into said graft once said graft has been delivered to said aneurysm.
Dependencies are inferred from the claim text.