Method of bonding porous metal to metal substrates
AssigneeBiomet Manufacturing, LLC
InventorGautam GUPTA
Life of this patent
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Abstract
A method for preparing an implant having a porous metal component. A loose powder mixture including a biocompatible metal powder and a spacing agent is prepared and compressed onto a metal base. After being compressed, the spacing agent is removed, thereby forming a compact including a porous metal structure pressed on the metal base. The compact is sintered, forming a subassembly, which is aligned with a metal substrate portion of an implant. A metallurgical bonding process, such as diffusion bonding, is performed at the interface of the subassembly and the metal substrate to form an implant having a porous metal component.
Claims20
A method for preparing an implant having a porous metal component, comprising:
- a. preparing a loose powder mixture comprising a biocompatible metal powder and a spacing agent;
- b. compressing the powder mixture onto a metal base;
- c. removing the spacing agent to form a compact having a porous metal structure pressed on the metal base;
- e. sintering the compact to form a subassembly;
- f. aligning the subassembly with a metal substrate component;
- and
- g. forming a metallurgical bond between the subassembly and the metal substrate component to form an implant.
A method for preparing an implant having a porous metal component, comprising:
- a. preparing a loose powder mixture comprising a biocompatible metal powder and a spacing agent;
- b. compressing the powder mixture onto a metal base defining a metal surface;
- c. heating the compressed powder mixture and defining a plurality of pores therein to form a compact;
- e. sintering the compact to form a subassembly comprising a porous metal structure having a non-porous metal backing;
- f. aligning the metal backing of the subassembly with a metal substrate component;
- and
- g. diffusion bonding the metal backing to the metal substrate component to form an implant.
A method for preparing an implant having a porous metal component, comprising:
- a. placing a base layer comprising a biocompatible metal powder into a mold;
- b. preparing a loose powder mixture of a biocompatible metal powder and a spacing agent;
- c. forming a secondary layer by spreading the loose powder mixture in the mold on top of the base layer;
- d. applying a compressive force to the mold thereby compressing the loose powder mixture of the secondary layer, compressing the base layer, and pressing the secondary layer onto the base layer;
- e. removing the spacing agent, defining a plurality of pores within the secondary layer;
- f. sintering the mold contents, forming a subassembly including a porous metal structure having a powder metal backing;
- and
- g. diffusion bonding the powder metal backing of the subassembly to a metal substrate component of an implant, forming an implant.
Dependencies are inferred from the claim text.