Method for surgical treatment of occlusive disease

• US 9,144,507 B2
• Filed: 02/26/2009
• Issued: 09/29/2015
• Est. Priority Date: 08/25/2005
• Status: Active Grant

• Current Assignee: Albert K. Wong
• Original Assignee: Albert K. Wong
• Inventors: Wong, Albert
• Primary Examiner(s): PREBILIC, PAUL B
• Application Number:
  US12/393,039
• Publication Number:
  US 20100049237A1
• Time in Patent Office: 2,406 Days
• Field of Search: 623/1.11
• US Class Current: 1/1
• CPC Class Codes: A61F 2/82 Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents stent-grafts for tubular structures of the body other than blood vessels A61F2/04; stent-grafts for blood vessels A61F2/07; instruments specially adapted for placement or removal of stents or stent-grafts A61F2/95; for closing wounds, or holding wounds closed A61B17/04 - A61B17/115; dilators A61M29/00
• CPC Class Codes: A61F 2/94 Stents retaining their form, i.e. not being deformable, after placement in the predetermined place

Abstract

A method of surgically treating occlusive disease in an intraluminal tissue using both a retractor (6) and a retractable one-piece stent. The stent is constructed and arranged such that it can exist in at least a stable initial collapsed state (12) and a stable deployed expanded state (10). In conjunction with the retractor, the stent is positioned at an appropriate location within an occluded intraluminal tissue and converted from a stable initial collapsed state to a stable deployed expanded state, and is then converted to a collapsed state and removed before significant restenosis occurs.

Claims

1. A method for surgically treating an occluded intraluminal tissue, comprising:

(a) positioning a retractable intraluminal medical device at an appropriate intraluminal tissue location, said intraluminal medical device comprising a one-piece sheath which defines a generally tubular body;

said sheath having a central longitudinal axis;

said sheath having at least one stable initial collapsed state and at least one stable deployed expanded state;

said sheath in at least one stable initial collapsed state having a plurality of portions having an equal radius of curvature which project inward into said central longitudinal axis;

an attachable, re-attachable, and detachable retractor comprised of a plurality of rigid connected prongs, forks, or stems, or combinations of said prongs, forks, or stems;

said retractor having a plurality of rigid attachable segments;

said retractor being mechanically attachable to and mechanically re-attachable to said sheath along a plurality of longitudinal indentations along said sheath;

said retractor being mechanically detachable from said sheath;

said retractor acting on said sheath whereby movement of said attachable segments of said retractor against said sheath in a stable initial collapsed state causes said sheath to elastically or semi-elastically expand radially from said collapsed state to a stable deployed expanded state;

said retractor acting on said sheath whereby movement of said attachable segments of said retractor against said sheath in a stable deployed expanded state causes said sheath to collapse radially from said stable deployed expanded state to a collapsed state;

(b) elastically or semi-elastically radially expanding said sheath from a stable initial collapsed state to a stable deployed expanded state using said retractor;

(c) mechanically radially collapsing said sheath from said stable deployed expanded state to a collapsed state using said retractor.

2. The method of claim 1, wherein said sheath is selected from a group consisting of a permanent luminal stent, a permanent vascular stent, a permanent grafted stent, a permanent mesh stent, a permanent scaffold stent, a permanent sleeve stent, a permanent porous stent, a permanent permeable stent, and a bioresorbable stent.

3. The method of claim 1, wherein movement of said attachable segments of said retractor against said sheath in a stable deployed expanded state causes said sheath to elastically or semi-elastically collapse radially from said stable deployed expanded state to a collapsed state.