LASER-PRODUCED POROUS STRUCTURE
First Claim
1. A method of producing a three-dimensional porous tissue in-growth structure comprising the steps of:
- depositing a first layer of a powder made from a metal selected from the group consisting of titanium, titanium alloys, stainless steel, cobalt chrome alloys, tantalum and niobium onto a substrate;
scanning a beam to form a portion of a plurality of predetermined unit cells within said metal powder layer;
depositing at least one additional layer of said powder onto said first layer; and
repeating said scanning step to form additional portions of said plurality of predetermined unit cells, said portions forming at least one strut extending in an oblique direction with respect to said substrate,wherein each said predetermined unit cell includes a plurality of edges, and no edge exceeds 2000 μ
m in length.
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Accused Products
Abstract
The present invention disclosed a method of producing a three-dimensional porous tissue in-growth structure. The method includes the steps of depositing a first layer of metal powder and scanning the first layer of metal powder with a laser beam to form a portion of a plurality of predetermined unit cells. Depositing at least one additional layer of metal powder onto a previous layer and repeating the step of scanning a laser beam for at least one of the additional layers in order to continuing forming the predetermined unit cells. The method further includes continuing the depositing and scanning steps to form a medical implant.
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Citations
21 Claims
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1. A method of producing a three-dimensional porous tissue in-growth structure comprising the steps of:
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depositing a first layer of a powder made from a metal selected from the group consisting of titanium, titanium alloys, stainless steel, cobalt chrome alloys, tantalum and niobium onto a substrate; scanning a beam to form a portion of a plurality of predetermined unit cells within said metal powder layer; depositing at least one additional layer of said powder onto said first layer; and repeating said scanning step to form additional portions of said plurality of predetermined unit cells, said portions forming at least one strut extending in an oblique direction with respect to said substrate, wherein each said predetermined unit cell includes a plurality of edges, and no edge exceeds 2000 μ
m in length. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification