Augments for surgical instruments
AssigneeDePuy Products, Inc.
InventorsRichard D. Keeven, Mari Truman
Life of this patent
Estimating the term…
Abstract
A system for establishing a prosthetic gap between first and second bones at a joint comprises an instrument for positioning within the gap between the first and second bones, and an augment for filling the gap when coupled to the instrument. In one embodiment, a resilient coupling member is provided to resiliently and removably couple the augment to the instrument. In another embodiment, the instrument and augment are configured so that the augment can be coupled to the instrument on either one of opposite surfaces of the augment facing the first and second bones.
Claims20
A system for establishing a gap between a femur and a tibia at a knee joint, comprising:
- an instrument having (i) a positioning member that defines a femur facing side and a tibia facing side, said positioning member including a first coupler, and (ii) a connector member having a first mating feature;
- an augment having a second coupler that cooperates with said first coupler to fix said augment to said positioning member abutting either said femur facing side or said tibia facing side;
- and
- a femoral resection guide having a second mating feature that mates with said first mating feature of said instrument, the instrument, augment, and femoral resection guide configured such that when the system is assembled and the femoral resection guide is positioned on a femur, the instrument and the augment span a gap between a posterior surface of the femur and a proximal surface of a tibia.
A system for establishing a gap between a femur and a tibia at a knee joint, comprising:
- an instrument having a positioning member that includes a first coupler, said positioning member defining (i) a femur facing side, (ii) a tibia facing side, and (iii), a guide slot configured to receive an intramedullary pin;
- an augment having a second coupler that cooperates with said first coupler to fix said augment to said positioning member abutting either said femur facing side or said tibia facing side;
- and
- an intramedullary pin received within said guide slot of said positioning member of said instrument by movement of the guide slot relative to the intramedullary pin along an axis substantially parallel to at least one of the femur facing side and tibia facing side.
A system for establishing a gap between a femur and a tibia at a knee joint, comprising:
- an instrument having (i) a positioning member that defines a femur facing side and a tibia facing side, said positioning member including a first coupler, and (ii) a connector member having a first mating feature;
- an augment having a second coupler that cooperates with said first coupler to fix said augment to said positioning member;
- and
- a femoral resection guide having a second mating feature that mates with said first mating feature of said instrument,
- wherein said first coupler of said positioning member includes a bore having a resilient O-ring positioned therein,
- said second coupler of said augment includes a pin that is in frictional contact with said O-ring, and
- the instrument, augment, and femoral resection guide are configured such that when the system is assembled and the femoral resection guide is positioned on a femur,
- the instrument and the augment span a gap between the femur and a tibia.
A system for establishing a gap between a femur and a tibia at a knee joint, comprising:
- an instrument having a positioning member that includes a first coupler, said positioning member defining (i) a femur facing side, (ii) a tibia facing side, and (iii), a guide slot configured to receive an intramedullary pin;
- an augment having a second coupler that cooperates with said first coupler to fix said augment to said positioning member;
- and
- an intramedullary pin received within said guide slot of said positioning member of said instrument by movement of the guide slot relative to the intramedullary pin along an axis substantially parallel to at least one of the femur facing side and tibia facing side,
- wherein said first coupler of said positioning member includes a bore having a resilient O-ring positioned therein, and
- said second coupler of said augment includes a pin that is in frictional contact with said O-ring.
Dependencies are inferred from the claim text.