Intravascular occlusion devices

• US 6,682,546 B2
• Filed: 05/09/2002
• Issued: 01/27/2004
• Est. Priority Date: 07/08/1994
• Status: Expired due to Fees

• Current Assignee: AGA Medical Corporation (Abbott Laboratories)
• Original Assignee: AGA Medical Corporation (Abbott Laboratories)
• Inventors: Amplatz, Gurtis
• Primary Examiner(s): Dawson, Glenn K.
• Application Number:
  US10/061,591
• Publication Number:
  US 20020123760A1
• Time in Patent Office: 628 Days
• Field of Search: 606/1, 606/159, 606/167, 606/170, 606/171, 606/151, 606/191-200, 606/190, 606/213, 604/96.01, 604/9, 623/1-9-
• US Class Current: 606/200
• CPC Class Codes: A61B 17/0057 Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect sutures A61B17/04; closing rectum or urethra near body surface A61F2/0009
• 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 17/12109 in a blood vessel
• CPC Class Codes: A61B 17/12122 within the heart for closing a cardiac septal defect A61B17/0057
• CPC Class Codes: A61B 17/1215 comprising additional materials, e.g. thrombogenic, having filaments, having fibers, being coated
• CPC Class Codes: A61B 17/12172 having a pre-set deployed three-dimensional shape methods of manufacturing A61B2017/00526
• CPC Class Codes: A61B 17/12177 comprising additional materials, e.g. thrombogenic, having filaments, having fibers or being coated
• CPC Class Codes: A61B 2017/00526 Methods of manufacturing
• CPC Class Codes: A61B 2017/00575 for closure at remote site, e.g. closing atrial septum defects
• CPC Class Codes: A61B 2017/00592 Elastic or resilient implements
• CPC Class Codes: A61B 2017/00606 Implements H-shaped in cross-section, i.e. with occluders on both sides of the opening
• CPC Class Codes: A61B 2017/00615 Implements with an occluder on one side of the opening and holding means therefor on the other
• CPC Class Codes: A61B 2017/00867 shape memory effect
• CPC Class Codes: A61F 2/0108 Both ends closed, i.e. legs gathered at both ends
• 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 2002/018 made from tubes or sheets of material, e.g. by etching or laser-cutting
• CPC Class Codes: A61F 2002/30092 using shape memory or superelastic materials, e.g. nitinol
• CPC Class Codes: A61F 2210/0019 operated at only one temperature whilst inside or touching the human body, e.g. constrained in a non-operative shape during surgery, another temperature only occurring before the operation
• CPC Class Codes: A61F 2230/0006 circular
• CPC Class Codes: A61F 2230/0065 : toroidal, e.g. ring-shaped, doughnut-shaped
• CPC Class Codes: A61F 2230/0067 : conical
• CPC Class Codes: A61F 2230/0078 : hyperboloidal
• CPC Class Codes: A61F 2230/008 : paraboloidal
• CPC Class Codes: A61F 2240/001 : Designing or manufacturing processes
• CPC Class Codes: B21F 45/00 : Wire-working in the manufacture of other particular articles of pins, needles, nails, hairpins B21G; of chains B21L ; for semiconductor devices H01L24/42
• CPC Class Codes: B21F 45/008 : of medical instruments, e.g. stents, corneal rings medical science A61
• CPC Class Codes: D04C 1/06 : Braid or lace serving particular purposes
• CPC Class Codes: D10B 2509/06 : Vascular grafts; stents
• CPC Class Codes: Y10S 623/901 : Method of manufacturing prosthetic device

Abstract

The present invention provides a method of forming a medical device and medical devices which can be formed in accordance with the method. In one embodiment, the method includes the steps of a) providing a metal fabric formed of a plurality of strands formed of a metal which can be heat treated to substantially set a desired shape; b) deforming the metal fabric to generally conform to a surface of a molding element; c) heat treating the metal fabric in contact with the surface of the molding element to substantially set the shape of the fabric in its deformed state; and d) removing the metal fabric from contact with the molding element. The resulting metal fabric will define a medical device which can be collapsed for passage through a catheter or the like for deployment in a channel of a patient'"'"'s body.

Claims

1. A medical device for placement in a tubular vessel in a patient'"'"'s body, the medical device comprising a fabric of a plurality of woven metal strands of a shape memory alloy having a preset, generally conical, expanded configuration and a collapsed configuration enabling passage of the medical device through a catheter into the tubular vessel, said plurality of woven metal strands having a first orientation with respect to one another and treated to conform in shape to said generally conical expanded configuration of the medical device when released from said collapsed configuration when in said catheter, said plurality of stands each with a proximal end and a distal end wherein one of the proximal end and distal end of each of the strands is secured at a common end point and the other of the proximal end and distal end of each of the strands is affixed to one other strand at a point of intersection therebetween and where the pitch and the pick of the woven metal strands are such that blood may readily pass through the fabric when the medical device is in said expanded configuration while a thrombus becomes lodged therein.

2. The medical device as in claim 1 and further including a clamp attached to an end of said strands secured at the common end point.

3. The medical device of claim 2 wherein said clamp has a threaded surface adapted for rotationally receiving a delivery device.

4. The medical device as in claim 1 wherein the common end point comprises an apex of the generally conical expanded configuration.