Patent · US Active

Uncoated biodegradable corrosion resistant bone implants

US10954587B2 · kind B2 · utility

1Cited by

2References

17Claims

0Family size

Assignee

BIOTRONIK AG · CH

Inventors

Heinz Mueller · Erlangen, DE
Peter Uggowitzer · Ottenbach, CH
Joerg Loeffler · Greifensee, CH

Key dates

Filing date	Mar 23, 2018
Grant date	Mar 23, 2021
Priority date	—
Expiry date	Aug 28, 2038

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC22C23/04
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A preferred embodiment is an uncoated, biodegradable corrosion resistant bone implant. The implant includes a body being uncoated and lacking any protective polymer, metallic or ceramic coating, the body being shaped to fix to a bone and/or bone fragment. The body is formed of a magnesium alloy. The magnesium alloy includes from high-purity vacuum distilled magnesium containing impurities, which promote electrochemical potential differences and/or the formation of precipitations and/or intermetallic phases. The impurities are such that the body has a strength of >275 MPa, and a ratio yield point of <0.8, wherein the difference between strength and yield point is >50 MPa.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.