Barron Douglas Elleby;Douglas Henry Elleby;Daniel Brian Lanois
发明人:
Barron Douglas Elleby,Douglas Henry Elleby,Daniel Brian Lanois
申请号：
US14334235
公开号：
US20160015438A1
申请日:
2014.07.17
申请国别(地区):
US
年份:
2016
代理人:
摘要：
A bone anchor device to connect two bone segments in a body has an elongated cylindrical member. The elongated cylindrical member has a shank, a first distal threaded end and a second proximal threaded end spaced by a middle portion of the shank. A first double helical thread formed on the first distal end has a pitch equal to or greater than a second helical thread formed at the second proximal end to create a compression between the two bone segments being connected. The shank has a maximum diameter extending the length of the second proximal thread end and extends therefrom on a constant tapered slope angle through the thread of the first distal end. This creates an increasing thread depth from a start of the distal threads to a maximum adjacent a tip at the distal end of the shank.
