US 12,127,776 B2
Method, device, and system for preventing lateral stress on bone structures resulting from off-axis forces caused by screw driver and screw extender
Morten Beyer, Rødkærsbro (DK); and Vincent Lefauconnier, Brent (CH)
Assigned to NEO MEDICAL SA, Villette (CH)
Appl. No. 17/619,713
Filed by Neo Medical SA, Villette (CH)
PCT Filed Jul. 1, 2020, PCT No. PCT/IB2020/056216
§ 371(c)(1), (2) Date Dec. 16, 2021,
PCT Pub. No. WO2021/001764, PCT Pub. Date Jan. 7, 2021.
Claims priority of application No. PCT/IB2019/055640 (WO), filed on Jul. 2, 2019.
Prior Publication US 2022/0304734 A1, Sep. 29, 2022
Int. Cl. A61B 17/88 (2006.01); A61B 17/00 (2006.01); A61B 90/00 (2016.01)
CPC A61B 17/8886 (2013.01) [A61B 2017/0069 (2013.01); A61B 2090/061 (2016.02); A61B 2090/067 (2016.02)] 9 Claims
OG exemplary drawing
 
1. An orthopedic screw tightening system comprising:
a screw driver having a screw engagement device and a device for providing for radial bendability and at a same time preserving torsional stiffness along an axis of longitudinal extension of the screw driver; and
a screw extender for holding a screw and accommodating the screw driver;
wherein the device of the screw driver includes a helix tube.