Three-dimensional porous structures for bone ingrowth and methods for producing
AssigneesDePuy Synthes Products, Inc., Johnson & Johnson Services, Inc.
InventorsWeidong Tong, Andrew T. Rosenberger, Robert J. Kane, Bryan J. Smith, Luke C. Ice
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Abstract
An orthopaedic prosthetic component is provided. The orthopaedic prosthetic component comprises a porous three-dimensional structure shaped to be implanted in a patient's body. The porous three-dimensional structure comprises a plurality of unit cells. At least one unit cell comprises a first geometric structure having a first geometry and comprising a plurality of first struts, and a second geometric structure having a second geometry and comprising a plurality of second struts connected to a number of the plurality of first struts to form the second geometric structure.
Claims20
An orthopaedic prosthetic component, comprising:
- a porous three-dimensional structure shaped to be implanted in a patient's body, the porous three-dimensional structure comprising a plurality of connected unit cells, at least one unit cell comprising a plurality of lattice struts and a plurality of internal struts,
- wherein the at least one unit cell includes:
- a first geometric structure comprising the plurality of lattice struts, and
- a plurality of second geometric structures formed out of the plurality of internal struts within the first geometric structure and a number of the lattice struts, each second geometric structure having an internal volume that is substantially equal to the internal volumes of the other second geometric structures.
An orthopaedic prosthetic component, comprising:
- a porous three-dimensional structure shaped to be implanted in a patient's body, the porous three-dimensional structure comprising a plurality of unit cells,
- wherein each unit cell comprises a first geometric structure having a first geometry and comprising a plurality of first struts, and a second geometric structure having a second geometry and comprising a plurality of second struts connected to a number of the plurality of first struts to form the second geometric structure.
A method for producing a porous three-dimensional structure, the method comprising:
- depositing and scanning successive layers of metal powders with a beam to form a porous three-dimensional structure comprising a plurality of unit cells and having predetermined geometric properties, each unit cell comprising a plurality of lattice struts and a plurality of internal struts, each unit cell including,
- a first geometric structure comprising the plurality of lattice struts, and
- a plurality of second geometric structures, formed out of the plurality of internal struts within the first geometric structure and a number of lattice struts of the plurality of lattice struts.
Dependencies are inferred from the claim text.