Laser-produced porous surface
US7537664B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 7, 2003 |
| Grant date | May 26, 2009 |
| Priority date | — |
| Expiry date | Dec 3, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/25
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method of fabricating a porous or partially porous three-dimensional metal article for use as a tissue ingrowth surface on a prosthesis. The porous article is formed using direct laser remelting in a cross section of a layer of metallic powder on a build platform without fusing thereto. The power, speed, spot size and beam overlap of the scanning laser is coordinated so that a predetermined porosity of the metallic powder can be achieved. Laser factors also vary depending from the thickness of the powder layer, type of metallic powder and size and size distribution of the powder particles. Successive depositing and remelting of individual layers are repeated until the article is fully formed by a layer-by-layer fashion. In an additional embodiment, a first layer of metallic powder may be deposited on a solid base or core and fused thereto.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.