US 11,857,424 B2
Hinged articulating spacer system for revision knee arthroplasty
Donald N. Sullivan, Decatur, IL (US)
Assigned to Donald N. Sullivan, Decatur, IL (US)
Filed by Donald N. Sullivan, Decatur, IL (US)
Filed on Jul. 23, 2021, as Appl. No. 17/384,594.
Application 17/384,594 is a continuation of application No. 16/551,378, filed on Aug. 26, 2019, granted, now 11,096,788.
Claims priority of provisional application 62/743,994, filed on Oct. 10, 2018.
Prior Publication US 2021/0346163 A1, Nov. 11, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. A61F 2/38 (2006.01); A61F 2/30 (2006.01)
CPC A61F 2/3845 (2013.01) [A61F 2/30724 (2013.01); A61F 2/389 (2013.01); A61F 2/3859 (2013.01); A61F 2002/305 (2013.01); A61F 2002/30677 (2013.01); A61F 2310/00011 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A hinged articulating spacer system for revision knee arthroplasty comprising:
a femur rod configured to be inserted into a distal end of a femur;
a tibia rod configured to be inserted into a proximal end of a tibia, wherein the tibia rod is hingedly coupled to the femur rod to form a hinged rod assembly and enable the tibia rod to rotate relative to the femur rod about a rotational axis;
a pre-formed femoral spacer component including bone cement impregnated with an antibiotic, the pre-formed femoral spacer component defining an opening through which the hinged rod assembly extends; and
a pre-formed tibial spacer component including bone cement impregnated with an antibiotic, the pre-formed tibial spacer component defining an opening through which the hinged rod assembly extends,
wherein the pre-formed tibial spacer component is configured to articulate with the pre-formed femoral spacer component as the tibia rod rotates relative to the femur rod about the rotational axis.