Implant component

The implant component, featuring a unitary articulation and fixing portion with a porous structure additively manufactured, addresses the challenges of stress shielding and implant loosening in orthopaedic implants, enhancing bone ingrowth and manufacturing efficiency.

WO2025068687A1 Publication Date: 2025-04-03OSSTEC LTD
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Patent Information

Application Number
PCT/GB2024/052463
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-05-06
Filing Date
2024-09-24
Publication Date
2025-04-03

AI Technical Summary

Technical Problem

Conventional orthopaedic implants face issues such as stress shielding, bone loss, and implant loosening due to the high elastic modulus of solid metal components, and porous coatings are prone to delamination or shearing off, compromising fixation and causing bone damage.

Method used

The development of an implant component with a unitary articulation and fixing portion, additively manufactured to include a porous structure for bone ingrowth, reduces the likelihood of disconnection and enhances fixation, while also being quicker and more cost-effective to produce than traditional cast components.

Benefits of technology

This approach reduces stress shielding, promotes significant bone ingrowth, and minimizes the risk of implant loosening, while offering improved manufacturing efficiency and reduced material wastage compared to traditional methods.

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Abstract

An implant component (100) for an orthopaedic implant for arthroplasty. The implant component (100) comprises an articulation portion (104). The articulation portion (104 comprises: a substantially non-porous peripheral portion (116) comprising an articulation surface (108), the articulation surface (108) being configured to articulate relative to another component of the orthopaedic implant or to native anatomy, when in use, the substantially non-porous peripheral portion comprising a cavity located adjacent a bone-facing side or bone- interfacing side of the peripheral portion (116); and a porous structure (114) providing at least a part of a bone-interfacing side of the articulation portion (104), at least a part of the porous structure (114) being located in the cavity in the substantially non-porous peripheral portion (116). The implant component (100) comprises a fixing portion (102), the fixing portion (102) for fixing the implant component (100) to a bone of a patient. The fixing portion (102) and the articulation portion (104) are unitary and comprise fused particles.
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