Dual-tray teletibial implant
First Claim
1. A tibial implant for measuring forces between a femur having first and second condylar surfaces and a tibia when a joint is articulated, the implant comprising:
- a medial tibial insert engaging the first condylar surface;
a lateral tibial insert engaging the second condylar surface;
a transducer including;
a medial plate coupled to the medial tibial insert and receiving forces from the medial tibial insert;
a lateral plate coupled to the lateral tibial insert and receiving forces from the lateral tibial insert; and
a bottom plate supporting the medial and lateral plates and having a plurality of spaced apart flexures deflectable for forces exerted on the medial and lateral plates, the flexures including separate flexures for each of the medial and lateral plates and a common flexure for both the medial and lateral plates.
1 Assignment
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Accused Products
Abstract
A teletibial implant is provided for measuring forces between a femur having first and second condylar surfaces and a tibia when a joint is articulated. The implant includes a medial tibial insert engaging the first condylar surface and a lateral tibial insert engaging the second condylar surface. A transducer includes a medial plate coupled to the medial tibial insert, a lateral plate coupled to the lateral tibial insert, and a bottom plate supporting the medial and lateral plates. The medial and lateral plates receive forces from the medial and lateral inserts, respectively. The bottom plate also has a plurality of spaced apart force sensors for measuring forces exerted on the medial and lateral plates.
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Citations
21 Claims
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1. A tibial implant for measuring forces between a femur having first and second condylar surfaces and a tibia when a joint is articulated, the implant comprising:
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a medial tibial insert engaging the first condylar surface;
a lateral tibial insert engaging the second condylar surface;
a transducer including;
a medial plate coupled to the medial tibial insert and receiving forces from the medial tibial insert;
a lateral plate coupled to the lateral tibial insert and receiving forces from the lateral tibial insert; and
a bottom plate supporting the medial and lateral plates and having a plurality of spaced apart flexures deflectable for forces exerted on the medial and lateral plates, the flexures including separate flexures for each of the medial and lateral plates and a common flexure for both the medial and lateral plates. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for measuring forces applied to a joint prosthesis and adapted to be located between a first bone and a second bone that form an articulation joint, the system comprising:
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a first member attached to an outer surface of the first bone;
a second member attached to an outer surface of the second bone; and
a transducer positioned between the first member and the second member, comprising;
a first plate receiving forces exerted between the first bone and the second bone;
a second plate receiving forces exerted between the first bone and the second bone; and
a bottom plate supporting the first and second plates and having a plurality of spaced apart force sensors for measuring forces exerted on the first and second plates. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A teletibial knee implant having a transducer measuring forces between a femur and a tibia when a knee joint is articulated, comprising:
a lower portion attachable to the tibia and the transducer, having;
a pocket having an opening toward the transducer. - View Dependent Claims (19, 20, 21)
Specification