Device and method for determining force of a knee joint
First Claim
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1. An orthopaedic surgical device comprising:
- a tibial paddle shaped to be positioned between a patient'"'"'s proximal tibia and distal femur;
a sensor array positioned in the tibial paddle, the sensor array including a plurality of pressure sensors configured to generate sensor signals indicative of a force between the patient'"'"'s tibia and femur;
a rigid handle secured to the tibial paddle such that the handle and tibial paddle are coplanar in a reference plane, wherein the handle includes a top handle housing and a bottom handle housing;
a first display secured to an end of the top handle housing;
a second display secured to an end of the bottom handle housing, positioned such that a line orthogonal to the reference plane intersects the first display and the second display; and
a circuit positioned in the handle, the circuit configured to receive the sensor signals from the sensor array and to control the first display to provide a visual indication of the force between the patient'"'"'s tibia and femur.
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Abstract
An orthopaedic surgical device for determining the joint force of a patient'"'"'s knee joint includes a tibial paddle shaped to be positioned in the patient'"'"'s knee joint and a handle extending from the tibial paddle. The tibial paddle includes a sensor array positioned therein and configured to generate sensor signals indicative of the joint force of the patient'"'"'s knee joint. The orthopaedic surgical device also includes a control circuit configured to control a display located on the handle to provide a visual indication of the medial and lateral balance of the joint force.
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Citations
17 Claims
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1. An orthopaedic surgical device comprising:
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a tibial paddle shaped to be positioned between a patient'"'"'s proximal tibia and distal femur; a sensor array positioned in the tibial paddle, the sensor array including a plurality of pressure sensors configured to generate sensor signals indicative of a force between the patient'"'"'s tibia and femur; a rigid handle secured to the tibial paddle such that the handle and tibial paddle are coplanar in a reference plane, wherein the handle includes a top handle housing and a bottom handle housing; a first display secured to an end of the top handle housing; a second display secured to an end of the bottom handle housing, positioned such that a line orthogonal to the reference plane intersects the first display and the second display; and a circuit positioned in the handle, the circuit configured to receive the sensor signals from the sensor array and to control the first display to provide a visual indication of the force between the patient'"'"'s tibia and femur. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An orthopaedic surgical device comprising:
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a tibial paddle shaped to be positioned between a patient'"'"'s proximal tibia and distal femur; a sensor array positioned in the tibial paddle, the sensor array including (i) a plurality of medially located pressure sensors configured to generate sensor signals indicative of a medial force between the patient'"'"'s tibia and femur and (ii) a plurality of laterally located pressure sensors configured to generate sensor signals indicative of a lateral force between the patient'"'"'s tibia and femur; a handle secured to the tibial paddle, the handle including a top housing and a bottom housing, the top housing having an interior surface that faces a corresponding interior surface of the bottom housing; a first plurality of light emitting diodes secured to an end of the top housing of the handle; a second plurality of light emitting diodes secured to an end of the bottom housing of the handle; and a circuit positioned in the handle, the circuit configured to activate at least one light emitting diode of each of the first and second plurality of light emitting diodes based on the sensor signals to provide a visual indication of the balance between the medial force and the lateral force between the patient'"'"'s tibia and femur.
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Specification