Embolization Device Constructed From Expansile Polymer

• US 20120283769A1
• Filed: 07/19/2012
• Published: 11/08/2012
• Est. Priority Date: 06/15/2006
• Status: Active Grant

• Current Assignee: Microvention Incorporated (Terumo Corporation)
• Original Assignee: Microvention Incorporated (Terumo Corporation)
• Inventors: Cruise, Gregory M., Constant, Michael, Tran, Terrace
• Granted Patent: US 9,451,963 B2
• Time in Patent Office: Days
• US Class Current: 606/198
• CPC Class Codes: A61B 17/12113 within an aneurysm
• CPC Class Codes: A61B 17/1214 Coils or wires
• CPC Class Codes: A61B 17/12145 having a pre-set deployed three-dimensional shape methods of manufacturing A61B2017/00526
• CPC Class Codes: A61B 17/12154 having stretch limiting means
• CPC Class Codes: A61B 17/12168 having a mesh structure A61B17/1214 takes precedence
• CPC Class Codes: A61B 17/1219 expandable in contact with liquids
• CPC Class Codes: A61L 2400/04 Materials for stopping bleeding
• CPC Class Codes: A61L 31/00 Materials for other surgical articles , e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices shape or structure of stent-grafts A61F2/07, of stents A61F2/82, of surgical gloves A61B42/00, of surgical drapes A61B46/00, of occluding devices A61B17/12022
• CPC Class Codes: A61L 31/022 Metals or alloys
• CPC Class Codes: A61L 31/041 Mixtures of macromolecular compounds
• CPC Class Codes: A61L 31/048 obtained by reactions only involving carbon-to-carbon unsaturated bonds A61L31/041 takes precedence
• CPC Class Codes: A61L 31/06 obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds A61L31/041 takes precedence
• CPC Class Codes: A61L 31/14 Materials characterised by their function or physical properties , e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
• CPC Class Codes: A61L 31/145 Hydrogels or hydrocolloids
• CPC Class Codes: A61L 31/146 Porous materials, e.g. foams or sponges
• CPC Class Codes: C08L 71/02 Polyalkylene oxides

Abstract

Devices for the occlusion of body cavities, such as the embolization of vascular aneurysms and the like, and methods for making and using such devices. The devices may be comprised of novel expansile materials, novel infrastructure design, or both. The devices provided are very flexible and enable deployment with reduced or no damage to bodily tissues, conduits, cavities, etceteras.

Claims

1. An occlusion device comprising:

an elongated expansile element composed substantially of expansile material; and

,

a microcoil helically disposed around said expansile element.

2. The occlusion device of claim 1, wherein said microcoil is between about 0.005 inches and about 0.035 inches in diameter.

3. The occlusion device of claim 1, wherein said microcoil is between about 0.002 inches and about 0.012 inches in diameter.

4. The occlusion device of claim 1, wherein said microcoil has a filar between about 0.0005 inches and about 0.01 inches.

5. The occlusion device of claim 1, wherein said microcoil has a filar between about 0.00075 inches and about 0.004 inches.

6. The occlusion device of claim 1, wherein said elongated expansile element is secured to said microcoil in a stretched configuration.

7. The occlusion device of claim 1, wherein said microcoil forms a plurality of loops forming a helical shape;

at least some of said loops spaced between about 0.00025 inches and about 0.2 inches from each other.

8. The occlusion device of claim 1, wherein said microcoil forms a plurality of loops forming a helical shape;

at least some of said loops spaced between about 0.00025 inches and about 0.005 inches from each other.

9. The occlusion device of claim 1, wherein said elongated expansile element is secured to said microcoil in a stretched configuration that is between about 125% and about 600% of its initial length.

10. An occlusion device comprising:

an elongated expansile element composed substantially of expansile material; and

,

a carrier element helically disposed around said expansile element.

11. The occlusion device of claim 10, wherein said carrier element is between about 0.005 inches and about 0.035 inches in diameter.

12. The occlusion device of claim 11, wherein said carrier element has a filar between about 0.0005 inches and about 0.01 inches.

13. The occlusion device of claim 12, wherein said carrier element forms a plurality of loops forming a helical shape;

at least some of said loops spaced between about 0.00025 inches and about 0.2 inches from each other.

14. The occlusion device of claim 13, wherein said elongated expansile element is secured to said carrier element in a stretched configuration that is between about 125% and about 600% of its initial length.

15. The occlusion device of claim 12, wherein said carrier element forms a plurality of loops forming a helical shape;

at least some of said loops spaced at about 0.0013 inches from each other.

16. An occlusion device comprising:

a filament formed substantially of expansile material; and

,

a carrier element helically disposed around said expansile element.

17. The occlusion device of claim 16, wherein said carrier element is between about 0.005 inches and about 0.035 inches in diameter.

18. The occlusion device of claim 16, wherein said carrier element has a filar between about 0.0005 inches and about 0.01 inches.

19. The occlusion device of claim 16, wherein said carrier element forms a plurality of loops forming a helical shape;

at least some of said loops spaced between about 0.00025 inches and about 0.2 inches from each other.

20. The occlusion device of claim 16, wherein said filament is secured to said carrier element in a stretched configuration that is between about 125% and about 600% of its initial length.