Porous implant structures
AssigneeNexus Spine, LLC
InventorsPeter Halverson, David Hawkes
Life of this patent
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Abstract
According to some embodiments of the present systems and methods, orthopedic implants with porous structures are provided. In some cases, the porous structures have a combination of correct stiffness and pore size for encouraging bony ingrowth. When the implants have the proper pore size and stiffness, osteocytes are able to properly bridge the pores of the implant and then experience a proper compressive load to stimulate the bone cells to form bone within the pores. Other implementations are described.
Claims25
An implant comprising:
- a body;
- and
- a porous structure configured to contact a segment of bone and promote bony ingrowth into the porous structure, the porous structure comprising:
- a strand forming a plurality of repeating structural units.
A porous structure for use in connection with a medical implant, the porous structure comprising:
- a surface configured to contact a bone;
- an interior portion configured to allow for bony ingrowth;
- a first strand forming a secondary structure;
- and
- a tertiary structure incorporating the secondary structure therein.
An implant comprising:
- a body comprising:
- a porous structure configured to contact a segment of bone across a contact area at a bone-to-implant interface, thereby promoting bony ingrowth into the porous structure,
- wherein:
- the porous structure comprises a flexible element having a stiffness;
- and
- the contact area and the stiffness have a ratio configured to cause the body to exert a contact stress of less than 100 N per square millimeter at the bone-to-implant interface.
A method of providing a medical implant, the method comprising:
- forming an implant body comprising:
- a porous structure comprising:
- a surface configured to contact a bone;
- an interior portion configured to allow for bony ingrowth;
- a first strand forming a secondary structure;
- and
- a tertiary structure incorporating the secondary structure therein.
Dependencies are inferred from the claim text.