Three-Dimensional Lattice Structures for Implants
AssigneeHD LifeSciences LLC
InventorsChristopher L. Jones, Ian Helmar, Lucas Diehl, Jason Tinley, Kevin D. Chappuis, John F. Sullivan
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Abstract
The three-dimensional lattice structures disclosed herein have applications including use in medical implants. Some examples of the lattice structure are structural in that they can be used to provide structural support or mechanical spacing. In some examples, the lattice can be configured as a scaffold to support bone or tissue growth. Some examples can use a repeating modified rhombic dodecahedron or radial dodeca-rhombus unit cell.
Claims24
A lattice structure for use in medical implants, comprising:
- a lattice structure configured to promote tissue in-growth;
- wherein said lattice structure provides sole initial mechanical spacing between at least two areas of tissue;
- wherein said lattice structure comprises repeating unit cells;
- wherein said lattice structure defines a number of openings;
- wherein a first group of openings, openings A, have a width of about width A;
- wherein a second group of openings, openings B, have a width of about width B;
- wherein width B is greater than width A;
- wherein said openings B are included at a ratio of about 1:1 to 1:25 per opening A in said lattice structure;
- and
- wherein said areas of tissue are portions of tissue near or abutting said implant when implanted.
A lattice structure for use in medical implants, comprising:
- a lattice structure comprising struts;
- wherein said lattice structure has an elastic modulus in a first direction of 0.375 GPa to 4 GPa;
- wherein said lattice structure is configured to provide sole mechanical spacing across a volume of desired bone growth, wherein said volume for desired bone growth is any area near or abutting at least two bony structures;
- wherein said struts define openings throughout the volume of said lattice structure;
- wherein a first group of openings, openings A, comprise a plurality of said openings configured to promote osteoblast in-growth;
- and
- wherein a second group of openings, openings B, comprise a plurality of said openings configured to promote osteon in-growth.
Dependencies are inferred from the claim text.