The Research Foundation of the State University of New York
发明人:
申请号：
EP16813798.2
公开号：
EP3313320A4
申请日:
2016.06.23
申请国别(地区):
EP
年份:
2019
代理人:
摘要：
A multi-diameter drill bit for implant bed preparation is provided. The drill bit has a drill shank that can be coupled with a driving tool to transfer drilling torques and forces to a drill body distal to the drill shank and a drill tip distal to the drill body. The drill body is divided into a first cylindrical portion having a first diameter and a second cylindrical portion having a second diameter. The drill tip is connected to the first cylindrical portion of the drill body and defines multiple first land areas and multiple cutting lips each at least partially bordering a respective first land areas. The second diameter is greater than the first diameter to define a plurality of faces of second lands at the interface between the first cylindrical portion and the second cylindrical portion, for reducing friction between the drill bit and surrounding bone tissue.
