US 12,082,862 B2
Surgical screwdriver
Luca Pagani, Castel San Pietro (CH); Marco Riva, Castel San Pietro (CH); Meinrad Fiechter, Castel San Pietro (CH); and Francesco Siccardi, Castel San Pietro (CH)
Assigned to MEDACTA INTERNATIONAL SA, Castel San Pietro (CH)
Appl. No. 17/415,613
Filed by MEDACTA INTERNATIONAL SA, Castel San Pietro (CH)
PCT Filed Dec. 17, 2019, PCT No. PCT/IB2019/060892
§ 371(c)(1), (2) Date Jun. 17, 2021,
PCT Pub. No. WO2020/128812, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. 102018000020290 (IT), filed on Dec. 20, 2018.
Prior Publication US 2022/0054178 A1, Feb. 24, 2022
Int. Cl. A61B 17/88 (2006.01); B25B 13/48 (2006.01); B25B 23/00 (2006.01); A61B 17/00 (2006.01)
CPC A61B 17/8886 (2013.01) [B25B 13/481 (2013.01); B25B 23/0014 (2013.01); A61B 2017/00477 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A surgical screwdriver comprising:
a first rotating shaft configured to be rotated about a respective longitudinal axis;
a second rotating shaft extending along a respective development axis and having a shaped end tip which can be inserted into the head of a screw;
a transmission member having a homokinetic spherical joint interposed between respective first ends of the shafts to transfer the rotation from the first rotating shaft to the second rotating shaft;
a cylindrical sleeve which is internally hollow to accommodate at least partially said shafts and said homokinetic spherical joint,
wherein said first rotating shaft has a second end opposite to the first end and projecting out of a first opening of the sleeve,
wherein said shaped end tip of the second rotating shaft projects out of a second opening of the sleeve opposite to the first opening of the sleeve, and
wherein said first rotating shaft comprises two discrete portions coaxially and detachably joined to each other inside the sleeve, said second end of the first rotating shaft being located in one of said portions which is distal from the second rotating shaft;
wherein said openings of the sleeve are not coaxial with each other, and said second opening defines the development axis of the second rotating shaft transverse to the longitudinal axis of the first rotating shaft.