US 12,453,585 B2
Orthopedic fixation device with lag screw and compression screw
Jordan Rakes, Cordova, TN (US); Kohsuke Watanabe, Memphis, TN (US); William M. Ricci, New York, NY (US); and Daniel S. Chan, Macon, GA (US)
Assigned to SMITH & NEPHEW, INC., Memphis, TN (US); SMITH & NEPHEW ORTHOPAEDICS AG, Zug (CH); and SMITH & NEPHEW ASIA PACIFIC PTE. LIMITED, Singapore (SG)
Appl. No. 18/704,209
Filed by Smith & Nephew, Inc., Memphis, TN (US); Smith & Nephew Orthopaedics AG, Zug (CH); and Smith & Nephew Asia Pacific PTE. Limited, Singapore (SG)
PCT Filed Nov. 3, 2022, PCT No. PCT/US2022/048776
§ 371(c)(1), (2) Date Apr. 24, 2024,
PCT Pub. No. WO2023/086256, PCT Pub. Date May 19, 2023.
Claims priority of provisional application 63/278,574, filed on Nov. 12, 2021.
Prior Publication US 2024/0415552 A1, Dec. 19, 2024
Int. Cl. A61B 17/74 (2006.01); A61B 17/72 (2006.01); A61B 17/86 (2006.01)
CPC A61B 17/7225 (2013.01) [A61B 17/744 (2013.01); A61B 17/8685 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An intramedullary (“IM”) nail comprising:
a body including an opening formed therethrough;
a lag screw including a driven end, a first segment, a second segment, and a tip, the first segment positioned adjacent the driven end and including a plurality of teeth, the second segment positioned adjacent the tip and including a plurality of threads arranged and configured to engage a portion of a patient's bone, the lag screw positioned within the opening formed in the body; and
a compression screw positioned within the opening formed in the body, the compression screw including a driven end, a first threaded segment, a second non-threaded segment so that the compression screw is partially threaded, and a tip, the first threaded segment positioned adjacent the driven end and including a plurality of threads arranged and configured to interact with the plurality of teeth formed on the lag screw so that, in use, rotation of the compression screw causes the lag screw to move, the second non-threaded segment positioned adjacent the tip of the compression screw.