Methods of manufacture and use of endoluminal devices
View Patent ↗A seamless, self-expanding implantable device having a low profile is disclosed along with methods of making and using the same. The implantable device includes a frame cut out of a single piece of material that is formed into a three-dimensional shape. The implantable device may comprise an embolic filter, stent, or other implantable structure. The present invention also allows complicated frame structures to be easily formed from planar sheets of starting material, such as through laser cutting, stamping, photo-etching, or other cutting techniques.
1. A method of constructing a uni-body, self-expanding filter frame comprising:
extracting a substantially two-dimensional filter frame pattern from a flat sheet of material by cutting;
configuring said two-dimensional pattern into a uni-body and seamless three-dimensional filter frame configuration; and
thermally annealing said uni-body and seamless three-dimensional filter frame configuration.
2. The method according to claim 1 , wherein said pattern includes attachment struts, support struts and filter support struts.
3. The method according to claim 2 , wherein said filter struts are adapted to incorporate a radio-opaque marker without adding thickness.
4. The method according to claim 1 , wherein the two-dimensional filter frame has at least one closed cell, the at least one cell including an area that has a circumference defined by a seamlessly continuous ribbon or strut of the same precursor material.
5. The method according to claim 1 , further comprising attaching a filter media to the filter frame before or after annealing.
6. The method according to claim 5 , wherein the filter media includes a pharmacological agent.
7. The method of claim 5 , wherein a portion of said frame is positioned and laminated between two portions of media.
8. The method according to claim 5 , wherein said pattern includes attachment struts and support struts.
9. The method according to claim 8 , wherein said attachment struts have at least one articulation region.
10. The method of claim 8 , wherein the precursor material is a shape memory alloy.
11. A method of assembly a filter comprising
providing a conical filter element;
providing a uni-body three-dimensional seamless filter frame; and
laminating said filter element and frame together.
12. A method of constructing a uni-body frame comprising:
extracting a substantially two-dimensional plastically deformable frame pattern from a flat sheet of plastically deformable material by cutting;
configuring said two-dimensional pattern into a uni-body and seamless, three-dimensional frame configuration; and
thermally treating said uni-body and seamless three-dimensional frame configuration.
13. The method according to claim 12 , wherein said pattern includes attachment struts and/or support struts.
14. The method according to claim 12 , wherein said pattern includes attachment struts, and/or support struts and/or filter support struts.
15. The method according to claim 14 , wherein any of said struts are adapted to incorporate a radio-opaque marker without adding thickness.
16. A method of constructing a uni-body, self-expanding frame comprising:
extracting a substantially two-dimensional frame pattern from a flat sheet of shape-memory alloy, self-expanding material by cutting;
configuring said two-dimensional pattern into a uni-body and seamless three-dimensional frame configuration; and
thermally annealing said uni-body and seamless three-dimensional frame configuration.
17. The method according to claim 16 , wherein said pattern includes attachment struts and/or support struts.
18. The method according to claim 16 , wherein said pattern includes attachment struts and/or support struts and/or filter support struts.
19. The method according to claim 18 , wherein any of said struts are adapted to incorporate a radio-opaque marker without adding thickness.