US 12,357,470 B2
Impaction instrument for implanting an orthopaedic knee prosthesis and associated method of using the same
Aaron J. Matyas, Fort Wayne, IN (US); Benjamin R. Powers, Columbia City, IN (US); and Alasdair J. J. Mercer, Leeds (GB)
Assigned to DePuy Ireland Unlimited Company, Ringaskiddy (IE)
Filed by DePuy Ireland Unlimited Company, Ringaskiddy (IE)
Filed on Dec. 16, 2022, as Appl. No. 18/082,789.
Prior Publication US 2024/0197496 A1, Jun. 20, 2024
Int. Cl. A61F 2/46 (2006.01); A61F 2/38 (2006.01)
CPC A61F 2/461 (2013.01) [A61F 2/389 (2013.01); A61F 2310/00017 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An orthopaedic surgical instrument for use during a surgical procedure to implant a component of a knee prosthesis into a surgically-prepared knee bone of a patient, comprising:
a polymer impaction insert having (i) a proximal surface, (ii) a distal surface that defines an impact surface of an impact head, the impact surface being sized and shaped to be positioned on an outer surface of the component of the knee prosthesis when the impaction insert is used to impact the component of the knee prosthesis, (iii) an elongated shaft extending between the proximal surface and the impact head of the impaction insert, and (iv) an elongated spine extending outwardly from an outer surface of the elongated shaft, the elongated spine extending parallel to a longitudinal axis of the elongated shaft, and
a metallic impaction handle removably secured to the impaction insert, the impaction handle having (i) an impact plate defining a proximal end of the impaction handle, (ii) an opposite distal end having an opening formed therein that is sized and shaped to receive the elongated shaft of the impaction insert, (iii) an elongated hollow body extending between the impact plate and the distal end, the elongated hollow body defining an elongated bore, the opening formed in the distal end opens into the elongated bore, and (iv) an elongated slot extending parallel to a longitudinal axis of the elongated hollow body,
wherein when the impaction handle is secured to the impaction insert (i) the elongated shaft of the impaction insert is positioned in the elongated bore of the impaction handle, and (ii) the elongated spine of the impaction insert extends outwardly through the elongated slot of the impaction handle.