Biocompatible medical implant element
US6312472A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2000 |
| Grant date | Nov 6, 2001 |
| Priority date | — |
| Expiry date | Jul 19, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L27/32
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The object of the invention is to make available implant elements or other medical products made of biological material with optimum mechanical and biological properties for a wide group of materials by introduction of a specially designed surface layer onto a strong core, where the surface layer is densified by means of hot isostatic pressing and dimensioned according to the basic fracture mechanics equation so that the thickness of the surface layer is less than c in the equation K.sub.IC =Y.sigma. c1/2, where K.sub.lc is the fracture toughness, Y a position and shape factor, c the critical defect size, and .sigma. the permitted stress for the actual material and the chosen design stress.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.