US 12,458,418 B2
Retrograde femoral intramedullary nail, and related systems and methods
Rohit Shinde, Irvine, CA (US); Thomas Keyer, West Chester, PA (US); David Cowens, West Chester, PA (US); Joshua McManus, Downingtown, PA (US); Raymond Schmitt, West Chester, PA (US); Michael Bushelow, West Chester, PA (US); Stanley J. Kmiec, Jr., Morgantown, PA (US); and Josef Gabelberger, West Chester, PA (US)
Assigned to DePuy Synthes Products, Inc., Raynham, MA (US)
Filed by DEPUY SYNTHES PRODUCTS, INC., Raynham, MA (US)
Filed on May 6, 2024, as Appl. No. 18/655,627.
Application 18/655,627 is a continuation of application No. 17/725,865, filed on Apr. 21, 2022, granted, now 12,004,785.
Prior Publication US 2024/0285319 A1, Aug. 29, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 17/72 (2006.01); A61B 17/17 (2006.01); A61B 17/74 (2006.01)
CPC A61B 17/7241 (2013.01) [A61B 17/1725 (2013.01); A61B 17/744 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method, comprising:
advancing an intramedullary nail within a medullary canal of a femur along a retrograde insertion trajectory,
wherein the advancing step comprises positioning a trailing end of the intramedullary nail within an intercondylar region of the femur while concurrently positioning a leading end of the intramedullary nail within or anatomically proximal to a subtrochanteric region of the femur and aligning at least one locking hole defined by the nail with one or more regions of the femur, wherein the one or more regions comprises a femoral neck of the femur and a femoral head of the femur, and wherein at least one annular protrusion, defined by a leading portion of the intramedullary nail that extends to the leading end, reduces stress concentrations in the leading portion.