Apparatus and method for minimally invasive total joint replacement
First Claim
1. A system for imparting force between adjacent first and second bones to seat an implant in the second bone, the system comprising:
- a first bone mount including at least one receiving hole, said first bone mount receivable within a first bone;
an impaction device including an impaction mass housing having an attachment portion of a first side, the attachment portion slidably received by said first bone mount, and a mating prominence coupled to a second side for receiving an implant adaptor;
a spring-biased impaction mass including a receiving groove thereon, said impaction mass slidably received by said impaction mass housing, said impaction mass imparting impaction force to the implant to seat the implant in the second bone, the force being reacted with the second bone and the first bone;
a spring-biased retraction pin, said retraction pin structured to releasably engage said receiving groove;
wherein said first bone mount and said impaction device are structured to fit within the confines of a joint cavity.
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0 Petitions
Accused Products
Abstract
A method and apparatus for minimally invasive total joint replacement. The method involves sculpting the articular surface of a second bone that normally articulates with a first bone by attaching a bone sculpting tool directly or indirectly to the first bone with the tool in bone sculpting engagement with the articular surface of the second bone, and then sculpting the articular surface of the second bone with the joint reduced and moving one bone with respect to the other. An implant is placed to replace the articular surface of the second bone using an impaction device directly or indirectly attached to the first bone, wherein the force to place the implant is reacted by the second bone and the first bone.
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Citations
57 Claims
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1. A system for imparting force between adjacent first and second bones to seat an implant in the second bone, the system comprising:
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a first bone mount including at least one receiving hole, said first bone mount receivable within a first bone; an impaction device including an impaction mass housing having an attachment portion of a first side, the attachment portion slidably received by said first bone mount, and a mating prominence coupled to a second side for receiving an implant adaptor; a spring-biased impaction mass including a receiving groove thereon, said impaction mass slidably received by said impaction mass housing, said impaction mass imparting impaction force to the implant to seat the implant in the second bone, the force being reacted with the second bone and the first bone; a spring-biased retraction pin, said retraction pin structured to releasably engage said receiving groove; wherein said first bone mount and said impaction device are structured to fit within the confines of a joint cavity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of securing an implant to a second bone that articulates with a first bone, the method comprising:
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providing an impaction device, the impaction device including an impaction mass housing having an attachment portion on a first side, the attachment portion slidably receivable by a mount, and a mating prominence coupled to a second side for receiving an implant; an impaction mass positioned within said housing and including a receiving groove thereon; a retraction pin for engaging said receiving groove; and connecting means operably connecting said impaction mass and said retraction pin to a source of actuating power for actuating said impaction mass; providing a first bone mount having at least one receiving hole; slidably coupling said attachment portion into said at least one receiving hole of said first bone mount within the confines of the joint cavity; placing an implant on the impaction device; aligning the implant with a second bone; and delivering said actuating power through said connecting means thereby charging said impaction mass and releasing said spring-biased retraction pin from said receiving groove wherein upon release the impaction mass imparts impaction force to the implant to seat the implant in the second bone, the force being reacted with the second bone and the first bone. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A system for imparting force between adjacent first and second bones to seat an implant in the second bone, the system structured to fit within the confines of the joint cavity, the system comprising:
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an implant including at least one attachment portion; an implant adaptor including at least first and second attachment portions, wherein the first attachment portion is releasably attached to said implant; a first bone mount including at least one receiving hole, said first bone mount receivable with a first bone; an impaction device including an attachment portion slidably receivable by a bone mount placed in the first bone, the impaction device including an impaction mass housing having an attachment portion on a first side, the attachment portion slidably received by said mount; and
a mating prominence coupled to a second side for receiving an implant adaptor;an impaction mass releasably held in said impaction mass housing, said impaction mass powered to press fit the implant in the second bone by imparting force to the implant, said force reacted by said adjacent first and second bones. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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43. A method of securing an implant to a second bone that articulates with a first bone comprising:
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providing an impaction device having an attachment portion on a first side;
said impaction device including an impaction mass housing having a mating prominence coupled to a second side for receiving the implant, a spring-biased impaction mass positioned within said housing and including a receiving groove thereon, and a spring-biased retraction pin for engaging said receiving groove;providing a connecting means operably connecting said impaction mass and said retraction pin to a source of actuating power for actuating said impaction mass; slidably coupling said attachment portion to the first bone; placing the implant on the impaction device; aligning the implant with the second bone; imparting an impaction force to the implant by delivering said actuating power through said connecting means thereby charging said impaction mass and releasing said spring-biased retraction pin from said receiving groove wherein upon said release the impaction mass imparts impaction force to the implant to press fit the implant in the second bone, the impaction force being reacted with the second bone and the first bone; and providing a surgical navigation system for positioning and aligning the impaction device. - View Dependent Claims (44, 45, 46, 47, 48, 49, 50)
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51. An impaction device for imparting force between adjacent first and second bones to seat an implant in the second bone, the device comprising:
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an impaction mass housing adapted for attachment to the first bone, said impaction mass housing having a mating prominence for receiving the implant and a cylinder for receiving an impaction mass; a spring-biased impaction mass including a receiving groove thereon, said impaction mass releasably held in said cylinder; a spring-biased retraction pin, said retraction pin structured to releasably engage said receiving groove; wherein said impaction mass is powered to seat the implant in a second bone by imparting impaction force to the implant, said impaction force reacted by said adjacent first and second bones. - View Dependent Claims (52, 53, 54, 55)
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56. A method of initiating an impaction cycle to seat an implant in a second bone that articulates with a first bone comprising:
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providing an impaction device, said impaction device including an impaction mass housing having an attachment portion on a first side, the attachment portion slidably receivable by a bone mount; and
a mating prominence coupled to a second side for receiving an implant adaptor;a spring-biased impaction mass for biasing the impaction mass in a retracted position, said spring-biased impaction mass positioned within said housing and including a receiving groove thereon; a spring-biased retraction pin for engaging said receiving groove; and connecting means operably connecting said impaction mass and said retraction pin to a source of actuating power for actuating said impaction mass; slidably coupling said attachment portion to the first bone; placing an implant on the implant adaptor; aligning the implant with a second bone; delivering said actuating power through said connecting means thereby charging said impaction mass and releasing said spring-biased retraction pin from said receiving groove wherein upon said release the impaction mass imparts impaction force to the implant to seat the implant in the second bone, the force being reacted with the second bone and the first bone. - View Dependent Claims (57)
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Specification