Three-Dimensional Complex Coil

• US 20120041464A1
• Filed: 10/20/2011
• Published: 02/16/2012
• Est. Priority Date: 11/17/2005
• Status: Active Grant

• Current Assignee: Damian Jonathan Perez, George Martinez, Matthew Fitz, Richard Monetti
• Original Assignee: Damian Jonathan Perez, George Martinez, Matthew Fitz, Richard Monetti
• Inventors: Monetti, Richard, Martinez, George, Fitz, Matthew, Perez, Damian Jonathan
• Granted Patent: US 9,533,344 B2
• Time in Patent Office: Days
• US Class Current: 606/191
• 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 17/1214 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 17/1215 comprising additional materials, e.g. thrombogenic, having filaments, having fibers, being coated
• CPC Class Codes: A61B 17/12154 having stretch limiting means
• CPC Class Codes: A61B 17/1219 expandable in contact with liquids
• CPC Class Codes: A61B 2017/00526 Methods of manufacturing
• CPC Class Codes: A61B 2017/00867 shape memory effect for prostheses A61F2210/0014
• 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

Abstract

A complex coil and a fixture for forming same configured such that loops are formed having various configurations relative to each other. The configurations provide improved thrombus formation and reduced rotation or tumbling once implanted. The complex coil is formed of a material that may deformed for purposes of placing the complex coil into a catheter and returns to a complex shape that includes said loops once deployed.

Claims

1. A complex coil comprising a plurality of loops arranged to form a toroid.

2. The complex coil of claim 1, wherein each of said plurality of loops is positioned at about 90 degrees from adjacent loops.

3. The complex coil of claim 1, wherein each of said planes is substantially contained within one of a plurality of planes and wherein said plurality of planes intersect with each other at a common intersection axis.

4. The complex coil of claim 1, wherein said plurality of loops further comprises several groups of two adjacent loops.

5. The complex coil of claim 1, wherein said torroid is a closed shape.

6. The complex coil of claim 1, wherein said torroid is an open shape.

7. A complex coil comprising a plurality of loops each contained within planes that intersect with each other at a common intersection axis.

8. The complex coil of claim 7, wherein each of said plurality of loops is substantially evenly spaced in a torroid shape.

9. The complex coil of claim 7, wherein said plurality of loops form an open torroid shape.

10. A fixture for forming a complex coil comprising a toroid.

11. The fixture of claim 10 wherein said toroid comprises an open toroid.

12. The fixture of claim 10 wherein said toroid comprises a closed toroid.

18. The method of claim 10 wherein heating the coiled wire to 1100°

F. for a predetermined period of time comprises heating the coiled wire to 1100°

F. for 5 to 60 minutes.

13. A method of forming a complex coil comprising:

wrapping a coiled wire around a toroid-shaped fixture;

heat setting the coiled wire;

removing the coiled wire from the fixture.

14. The method of claim 13 wherein wrapping a coiled wire around a toroid-shaped fixture comprises passing the coiled wire through a center of the fixture and around an outside of the fixture a plurality of times, thereby forming a plurality of loops.

15. The method of claim 14 wherein forming a plurality of loops comprises forming four loops around the fixture, each loop spaced approximately 90 degrees from adjacent loops.

16. The method of claim 14 further comprising assessing a size of an aneurysm in which the complex coil is to be placed and determining a number of loops to be formed based said aneurysm size.

17. The method of claim 13 wherein heat setting the coiled wire comprises heating the coiled wire to 1100°

F. for a predetermined period of time.

19. The method of claim 13, wherein said wrapping a coiled wire around a toroid-shaped fixture further comprises forming at least 2 loops.

20. The method of claim 13, wherein said wrapping a coiled wire around a toroid-shaped fixture further comprises forming between 8 and 36 loops.