Patent ID: 9220512
Filing Date: 2015-12-29
Classification: A61B,A61C

Abstract:
1. A medical drill made of an amorphous alloy, wherein the amorphous alloy is a Zr-based amorphous alloy which comprises zirconium metal in 45 at % or more, and the medical drill has a tensile strength of 1500-2500 MPa and a Vickers hardness of 400-750; wherein the Zr-based amorphous alloy comprises zirconium in 45 at % or more, aluminum in 5-10 at %, copper in 15-20 at % and nickel in 5-15 at %, and further comprises silicon, boron, yttrium, palladium or tantalum in 1 at % or more; wherein the Zr-based amorphous alloy is represented by the following formula of Zr