Medical implants having desired surface features and methods of manufacturing
US10070962B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 12, 2016 |
| Grant date | Sep 11, 2018 |
| Priority date | — |
| Expiry date | Feb 12, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2250/006
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In embodiments of the invention, an implant that anchors into bone may have a bone-facing region that comprises a plurality of interconnected struts. The interconnected struts may define local features such as engagement ridges, fins, crests, a macroscopic surface-interrupting feature, a divertor structure, and sawteeth in any combination. Such features may help resist translation or rotation of the implant, and may be conducive to bone ingrowth. Parameters such as local empty volume fraction and local average strut length can be varied, even within the features, by the design of the network of struts. Struts may be tapered. Cantilever struts may also be provided, which may point in a desired direction. The pattern of struts may be specified to the level of dimensions and location of individual struts. The implant may be manufactured by additive manufacturing methods. The mesh of struts may be generated by an algorithm using Voronoi tessellation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.