Device and method of spacer and trial design during joint arthroplasty
First Claim
1. A system that gathers information to select a trial insert between a femur and tibia of a knee of a patient, comprising:
- a first body piece and a second body piece of a spacer, the first body piece being separate from the second body piece, where the first body piece and the second body piece can be assembled together to form the spacer, the first body piece comprising a plurality of poles integrally formed with the first body piece and extending relative to an inside surface of the first body piece;
a plurality of sensors disposed on each respective pole;
a processor positioned between the first body piece and the second body piece when the first and the second body pieces are assembled, the processor coupled with the plurality of sensors; and
a chim removably mountable to an outside surface of the second body piece, the plurality of poles disposed about and aligned with the chim, and where the chim is configured to be mountable to the outside surface of the second body piece through projections on an underside of the chim and corresponding recesses formed in the top surface of the second body piece that align with the plurality of poles.
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Accused Products
Abstract
A spacer block for gathering data to be used in the balancing of the joint arthroplasty or repair and in the selection of a trial insert which includes a first body piece and a second body piece. A plurality of sensors and a processor are positioned between the first body piece and the second body piece when the pieces are assembled together to form the spacer block. A chim is removably mounted to a top surface of the second body piece, the chim is associated with the plurality of sensors and positioned in relation to the plurality of sensors such that a force exerted on the chim by a weight bearing surface is detected by the plurality of sensors.
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Citations
18 Claims
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1. A system that gathers information to select a trial insert between a femur and tibia of a knee of a patient, comprising:
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a first body piece and a second body piece of a spacer, the first body piece being separate from the second body piece, where the first body piece and the second body piece can be assembled together to form the spacer, the first body piece comprising a plurality of poles integrally formed with the first body piece and extending relative to an inside surface of the first body piece; a plurality of sensors disposed on each respective pole; a processor positioned between the first body piece and the second body piece when the first and the second body pieces are assembled, the processor coupled with the plurality of sensors; and a chim removably mountable to an outside surface of the second body piece, the plurality of poles disposed about and aligned with the chim, and where the chim is configured to be mountable to the outside surface of the second body piece through projections on an underside of the chim and corresponding recesses formed in the top surface of the second body piece that align with the plurality of poles. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A system to plurality of poles integrally that gathers information to select a trial insert between a femur and tibia of a knee of a patient, comprising:
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a first body piece and a second body piece of a spacer, the first body piece being separate from the second body piece, where the first body piece and the second body piece can be assembled together to form the spacer, the first body piece comprising a plurality of poles integrally formed with the first body piece and extending relative to an inside surface of the first body piece, where a top portion of at least one of the plurality of poles conforms to a shape of a condyle to mate with an underside portion of the second body piece; a plurality of sensors disposed on each respective pole; a processor positioned between the first body piece and the second body piece when the first and the second body pieces are assembled, the processor coupled with the plurality of sensors; and a chim removably mountable to an outside surface of the second body piece, the plurality of poles disposed about and aligned with the chim, and where the chim is configured to be mountable to the outside surface of the second body piece through projections on an underside of the chim and corresponding recesses formed in the top surface of the second body piece.
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18. A system that gathers information to select a trial insert between a femur and tibia of a knee of a patient, comprising:
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a first body piece and a second body piece of a spacer, the first body piece being separate from the second body piece, where the first body piece and the second body piece can be assembled together to form the spacer, the first body piece comprising a plurality of poles integrally formed with the first body piece and extending relative to an inside surface of the first body piece; a plurality of sensors disposed on each respective pole; a processor positioned between the first body piece and the second body piece when the first and second body pieces are assembled, the processor coupled with the plurality of sensors; and at least two separate chims removably mountable to an outside surface of the second body piece, where each of the separate chims is associated with a pole from the plurality of poles, and wherein each separate chim is configured to be mountable to an outside surface of the second body piece through projections on an underside of the chim and associated recesses formed in the top surface of the second body piece corresponding with the associated pole.
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Specification