Surgical instrument and method of disassembling a tibial prosthesis
AssigneeDepuy (Ireland)
InventorsAaron J. Matyas, Stephen Bennett, Kyle D. Steffe
Life of this patent
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Abstract
An orthopaedic surgical instrument includes an anchor configured to be coupled to a prosthetic tibial component, a shaft coupled to the anchor, and a separator coupled to the shaft. The separator is configured to move along the shaft between a first position in which the separator is spaced apart from the prosthetic tibial component and a second position in which the separator is positioned between the tibial tray and the sleeve of the prosthetic tibial component.
Claims20
An orthopaedic surgical instrument comprising:
- an anchor having a longitudinal axis,
- a shaft coupled to the anchor, the shaft having a longitudinal axis extending orthogonal to the longitudinal axis of the anchor, and
- a separator coupled to the shaft, the separator having a pair of arms and a slot defined therebetween, wherein the separator is configured to move along the longitudinal axis of the shaft between (i) a first position in which the anchor is spaced apart from the slot of the separator and (ii) a second position in which the anchor is received in the slot defined between the pair of arms.
An orthopaedic surgical instrument comprising:
- an anchor including a frustoconical first body and a cylindrical second body extending downwardly from the frustoconical first body,
- a shaft secured to the anchor, the shaft having an externally-threaded outer surface and a longitudinal axis,
- a housing having an internally-threaded inner surface engaged with externally-threaded outer surface of the shaft, the housing being configured to rotate about the longitudinal axis of the shaft, and
- a separator including (i) a mounting body positioned between the anchor and the housing and (ii) a pair of arms having a slot defined therebetween,
- wherein the housing is engaged with the mounting body such that rotation of the housing about the longitudinal axis causes the separator to move between (i) a first position in which the anchor is spaced apart from the slot of the separator and (ii) a second position in which the anchor is received in the slot defined between the pair of arms.
A method of performing an orthopaedic surgical procedure, comprising:
- securing an anchor to a tibial prosthetic component implanted in a proximal end of a patient's tibia, the tibial prosthetic component including a tibial tray and a tibial sleeve secured to the tibial tray,
- moving a separator posteriorly toward the anchor to position a tip of the separator between a lower side of the tibial tray and an upper end of the tibial sleeve,
- advancing the separator from anterior to posterior between the lower side of the tibial tray and the upper end of the tibial sleeve to detach the tibial tray from the tibial sleeve, and
- removing the tibial tray from the proximal end of the patient's tibia.
Dependencies are inferred from the claim text.