Method of producing a porous bone screw
US9216045B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 16, 2015 |
| Grant date | Dec 22, 2015 |
| Priority date | — |
| Expiry date | Feb 16, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/561
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A bone screw and method of producing the same is described. The method of producing a bone screw includes forming a one-piece headless screw body out of a rigid metallic foam that is entirely porous throughout and defines a plurality of inter-connected pores having a size of about 30 to about 500 microns in diameter. The method includes providing at least one thread on an external surface of the screw body, and forming a bore extending through an entire axial length of the screw body, the bore forming a cannula that defines an annular radial wall thickness of the screw body. The method further includes disposing the inter-connected pores throughout the radial wall thickness of the screw body such as to allow for bone in-growth through the full radial wall thickness and into the cannula.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.