Dynamic knee balancer with opposing adjustment mechanism
First Claim
1. A device for performing a minimally invasive procedure on a knee, the device comprising a femoral assembly engageable with a distal femur, the femoral assembly comprising:
- a stationary femoral member removably attachable to a distal femur;
an adjustable femoral member movably coupled with the stationary member to adjust tension in at least one ligament of or adjacent the knee, the adjustable femoral member including a medial portion and a lateral portion and at least one positioning feature that moves relative to the distal femur as the adjustable femoral member is adjusted and thus identifies at least one position on the distal femur for facilitating completion of the surgical procedure to enhance at least one of range of motion, stability or patella tracking of the knee, wherein the adjustable femoral member is configured to be movably couplable with a tibial member engaged with a proximal tibia to allow the knee to be moved through a range of motion without removing the femoral and tibial members; and
an adjustment mechanism coupled to the femoral assembly, the mechanism including an actuator, the actuator positioned proximate the medial or the lateral portion of the adjustable femoral member, the actuator configured to adjust an opposite portion of the adjustable member to adjust tension in the at least one ligament.
1 Assignment
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Accused Products
Abstract
A device for performing a surgical procedure on a knee comprises a femoral assembly comprising a stationary femoral member attachable to the distal femur, an adjustable femoral member movably coupled with the stationary member to adjust tension in at least one ligament of or adjacent the knee and an adjustment mechanism coupled to the assembly. The adjustable member includes at least one positioning feature that moves relative to the distal femur as the adjustable member is adjusted and identifies at least one position on the distal femur. The adjustable member is movably couplable with a tibial member engaged with a proximal tibia to allow the knee to be moved through a range of motion without removing the femoral and tibial members. The mechanism includes an actuator positioned proximate a medial or lateral portion of the adjustable member. The actuator is configured to adjust an opposite portion of the adjustable member.
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Citations
74 Claims
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1. A device for performing a minimally invasive procedure on a knee, the device comprising a femoral assembly engageable with a distal femur, the femoral assembly comprising:
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a stationary femoral member removably attachable to a distal femur;
an adjustable femoral member movably coupled with the stationary member to adjust tension in at least one ligament of or adjacent the knee, the adjustable femoral member including a medial portion and a lateral portion and at least one positioning feature that moves relative to the distal femur as the adjustable femoral member is adjusted and thus identifies at least one position on the distal femur for facilitating completion of the surgical procedure to enhance at least one of range of motion, stability or patella tracking of the knee, wherein the adjustable femoral member is configured to be movably couplable with a tibial member engaged with a proximal tibia to allow the knee to be moved through a range of motion without removing the femoral and tibial members; and
an adjustment mechanism coupled to the femoral assembly, the mechanism including an actuator, the actuator positioned proximate the medial or the lateral portion of the adjustable femoral member, the actuator configured to adjust an opposite portion of the adjustable member to adjust tension in the at least one ligament. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54)
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55. A device for performing a minimally invasive procedure on a knee, the device comprising a femoral assembly engageable with a distal femur, the femoral assembly comprising:
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a stationary femoral member removably attachable to a distal femur; and
an adjustable femoral member movably coupled with the stationary member to adjust tension in at least one ligament of or adjacent the knee, the adjustable femoral member comprising a medial portion and a lateral portion and at least one positioning feature that moves relative to the distal femur as the adjustable femoral member is adjusted and thus identifies at least one position on the distal femur for facilitating completion of the surgical procedure to enhance at least one of range of motion, stability or patella tracking of the knee; and
adjustment means coupled to a medial or lateral portion of the femoral assembly, the adjustment means configured to adjust an opposite portion of the adjustable femoral member to adjust tension in the at least one ligament;
wherein the adjustable femoral member is configured to be movably couplable with a tibial member engaged with a proximal tibia to allow the knee to be moved through a range of motion without removing the femoral and tibial members. - View Dependent Claims (56, 57, 58, 59, 60, 61, 62, 63, 64)
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65. A device for performing a minimally invasive procedure on a knee, the device comprising a femoral assembly, the femoral assembly comprising:
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a stationary femoral member for removably attachable to a distal femur; and
an adjustable femoral member movably coupled with the stationary member to adjust tension in at least one ligament of or adjacent the knee, the adjustable femoral member comprising a medial portion and lateral portion and at least one positioning feature that moves relative to the distal femur as the adjustable femoral member is adjusted and thus identifies at least one position on the distal femur for facilitating completion of the surgical procedure to enhance at least one of range of motion, stability or patella tracking of the knee; and
a self adjustment mechanism coupled to the femoral assembly, the adjustment means configured to adjust the adjustable femoral member responsive to a tension of the at least one ligament;
wherein the adjustable femoral member is configured to be movably couplable with a tibial member engaged with a proximal tibia to allow the knee to be moved through a range of motion without removing the femoral and tibial members. - View Dependent Claims (66, 67, 68, 69, 70, 71, 72)
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73. A system for performing a minimally invasive procedure on a knee, the system comprising:
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a femoral assembly engageable with a distal femur, the femoral assembly comprising;
a stationary femoral member removably attachable to a distal femur;
an adjustable femoral member movably coupled with the stationary member to adjust tension in at least one ligament of or adjacent the knee, the adjustable femoral member including a medial portion and a lateral portion and at least one positioning feature that moves relative to the distal femur as the adjustable femoral member is adjusted and thus identifies at least one position on the distal femur for facilitating completion of the surgical procedure to enhance at least one of range of motion, stability or patella tracking of the knee; and
adjustment means coupled to a medial or lateral portion of the femoral assembly, the adjustment means configured to adjust an opposite portion of the adjustable femoral member to adjust tension in the at least one ligament; and
at least one tibial member engageable with a proximal tibia and movably couplable with the femoral assembly to allow the knee to be moved through a range of motion without removing the femoral and tibial members. - View Dependent Claims (74)
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Specification