Multi-element intravascular occlusion device

• US 5,443,478 A
• Filed: 09/02/1992
• Issued: 08/22/1995
• Est. Priority Date: 09/02/1992
• Status: Expired due to Term

• Current Assignee: Board of Regents of the University of Texas System (University of Texas System)
• Original Assignee: Board of Regents of the University of Texas System (University of Texas System)
• Inventors: Purdy, Phillip D.
• Primary Examiner(s): Pellegrino, Stephen C.
• Assistant Examiner(s): LEWIS, WILLIAM W
• Application Number:
  US07/939,296
• Time in Patent Office: 1,084 Days
• Field of Search: 606/108, 606/194, 606/195, 606/198, 606/200, 128/899, 623/1, 623/12
• US Class Current: 606/200
• 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 17/12113 within an aneurysm
• CPC Class Codes: A61B 17/12172 having a pre-set deployed three-dimensional shape methods of manufacturing A61B2017/00526

Abstract

A multi-element occlusion device (10, 20, 30, 40) provides an improvement over existing systems by increasing the occupation of a vascular lumen. The device (10, 20, 30) comprises an anchoring element (12, 22, 32), a lead element (14, 24, 34) and at least one fiber (16, 26, 36) attaching said elements. The elements and fibers produce a cumulative occlusive effect greater than the sum of the individual elements. When placed in the blood stream, the anchoring element (12, 22, 32) lodges against the vessel wall and the lead element (14, 24, 34) is carried to a position distal thereto. With the use of multi-element deployment, the device (10, 20, 30) decreases the risk of continued canalization and recanalization.

Claims

1. A multi-element intravascular occlusion device comprising:

(a) at least one anchoring means for anchoring the device to a wall of a vessel; and

(b) at least one lead element for travelling distal to the anchoring means and producing thrombosis within the vessel, said lead element being attached to said at least one anchoring means by a means for attaching,

wherein said anchoring means comprises a coil, and

wherein in use, the device is free-standing within the vessel, and blood in the vessel clots on the anchoring means, the lead element, and the attaching means to produce total occlusion of the vessel.

2. The multi-element intravascular occlusion device of claim 1, wherein the coil is curved.

3. The multi-element intravascular occlusion device of claim 1, wherein the coil is straight.

4. A multi-element intravascular occlusion device comprising:

(a) at least one anchoring means for anchoring the device to a wall of a vessel; and

(b) at least one lead element for travelling distal to the anchoring means and producing thrombosis within the vessel, said lead element being attached to said at least one anchoring means by a means for attaching,

wherein said means for attaching comprises at least one fiber, and

wherein said at least one fiber comprises a fiber capable of elongation.

5. A multi-element intravascular occlusion device comprising:

(a) an anchoring means for anchoring the device to a vessel wall;

(b) a lead element for travelling distal to the anchoring means; and

(c) a plurality of fibers for attaching said anchoring means to said lead element,

wherein said lead element comprises a particle means for producing thrombosis.

6. A multi-element intravascular occlusion device comprising:

(a) an anchoring means for anchoring the device to a wall of a vessel;

(b) a lead element for travelling distal to the anchoring means and producing thrombosis within the vessel; and

(c) a plurality of fibers for attaching said anchoring means to said lead element,

wherein said plurality of fibers comprise nonmetallic fibers.

7. A method of producing total occlusion of a vessel using a multi-element intravascular occlusion device at a desired deployment location, said device having at least one anchoring element and at least one lead element attached by at least one fiber, said method comprising:

(a) inserting an introducing catheter with a distal end into the vessel such that the distal end is adjacent to the desired deployment location;

(b) inserting the occlusion device into the introducing catheter;

(c) introducing the occlusion device into the vessel from the introducing catheter;

(d) lodging the anchoring element against the vessel wall; and

(e) allowing the lead element to travel distal to the anchoring element, said lead element producing thrombosis within said vessel.