Composite metallic-ceramic implants and related methods
AssigneeAmedica Corporation
InventorsBhajanjit Singh Bal, Bryan J. McEntire, Ramaswamy Lakshminarayanan
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Abstract
Embodiments of apparatus, systems, and methods relating to biomedical implants and other devices made up of a composite of materials comprising metal and/or metal alloys and ceramics. In some embodiments, a modular biomedical implant may comprise a first metallic member comprising at least one of a metal and a metal alloy, a second metallic member comprising at least one of a metal and a metal alloy, and a monolithic ceramic insert comprising a ceramic material positioned in between the first metallic member and the second metallic member so as to at least substantially prevent contact between the first metallic member and the second metallic member.
Claims24
A modular biomedical implant, comprising:
- a first metallic member comprising at least one of a metal and a metal alloy;
- a second metallic member comprising at least one of a metal and a metal alloy;
- and
- a monolithic ceramic insert comprising a ceramic material positioned in between the first metallic member and the second metallic member so as to at least substantially prevent contact between the first metallic member and the second metallic member.
A modular hip implant, comprising:
- a femoral head comprising at least one of a metal and a metal alloy, wherein the femoral head comprises a cavity, wherein the cavity comprises a peripheral opening having a first diameter, and wherein the cavity comprises a terminal portion having a second diameter greater than the first diameter;
- and
- a ceramic insert comprising a ceramic material positioned within the cavity so as to at least substantially prevent contact between a portion of the femoral head defining the cavity and a second metallic member of the modular hip implant, wherein the ceramic insert comprises an exterior surface configured to engage the portion of the femoral head defining the cavity and an interior surface configured to engage the second metallic member, wherein the exterior surface extends between a first end and a second end, and wherein a diameter of the exterior surface at the first end is greater than a diameter of the exterior surface at the second end.
A method for manufacturing a biomedical implant, the method comprising the steps of:
- providing a first metallic member comprising at least one of a metal and a metal alloy, wherein the first metallic member comprises a cavity comprising a peripheral opening and an internal portion, and wherein the cavity comprises a reverse taper such that the peripheral opening comprises a first diameter and the internal portion comprises a second diameter greater than the first diameter;
- providing a second metallic member comprising at least one of a metal and a metal alloy configured to be coupled with the first metallic member;
- providing a ceramic insert comprising a ceramic material, wherein the ceramic insert comprises an external reverse taper such that a first end of the ceramic insert comprises an external diameter of a first length and a second end of the ceramic insert opposite from the first end has an external diameter of a second length, wherein the first length is greater than the second length, and wherein the first end is configured to be received within the cavity adjacent to the internal portion of the cavity;
- positioning the ceramic insert in the cavity such that the ceramic insert at least partially lines the cavity;
- bonding the ceramic insert to the first metallic member;
- and
- inserting at least a portion of the second metallic member into the cavity defined at least in part by the ceramic insert.
Dependencies are inferred from the claim text.