Process for the production of an implant as a bone substitute
US4600546A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 9, 1985 |
| Grant date | Jul 15, 1986 |
| Priority date | — |
| Expiry date | Apr 9, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S264/44
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
This invention relates to a process for the production of an implant of metal or plastics material having an open-celled structure as a bone substitute. The process uses a connectively open-celled pattern material having a spatial grid or lattice network structure, the cells or pores of the material being defined or formed by very fine thin interconnected threads or cords. The thin threads are coated by a wax-water emulsion which is combustible and vaporizable. A stabilization of the coating may be performed by spraying-on of a hardening and vaporizable synthetic material lacquer, which is deposited on the wax coating. A core material is introduced into the residual hollow spaces of the pattern, which is consolidated by heat, the pattern material being burnt and vaporized while doing so, together with the adhering material and the lacquer without leaving behind any residues, so that the cavities formed in the core may be filled with the implant material and the core material is finally removed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.