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US 5,571,194 AGranted
Femoral augmentation system for artificial knee joint
AssigneeJohnson & Johnson Professional, Inc.
InventorStefan M. Gabriel
Life of this patent
Estimating the term…
Abstract
An augmentation system for a femoral component of a knee prosthesis includes a main augmentation block and a secondary block disposed within the main augmentation block. The secondary block is adjustably positioned within the main augmentation block such that relative motion between the two facilitates easy and secure fixture of the augmentation system within a prosthesis. The augmentation system of the invention can be used with either left or right side prostheses.
Claims21
An augmentation device for a joint prosthesis;
- comprising
- a main augmenting block adapted to mount on a surface of a joint prosthesis, the main augmenting block having a nominal distal surface and a proximal surface, first and second side surfaces that are either anterior or posterior surfaces, and third and fourth side surfaces that are either medial or lateral surfaces;
- a channel disposed in the main augmenting block and extending into an interior portion of the main augmenting block through one of the side surfaces of the main augmenting block;
- a secondary block means, adjustably positioned within the channel of the main augmenting block, for securing the augmentation device to a joint prosthesis, the secondary block means including a side surface that is either a lateral or medial surface and that corresponds in shape and orientation to the side surface of the main augmenting block through which the channel extends;
- and
- screw means associated with the secondary block means fog adjusting the position of the secondary block means relative to the main augmenting block between at least a first and a second position.
3 more elements
A joint prosthesis, comprising
- a prosthesis component having a bone engaging surface and an opposed articulation surface;
- a main augmenting block adapted to mount upon the bone engaging surface of the prosthesis component, the main augmenting block having a nominal distal surface which contacts the bone engaging surface and a proximal surface, first and second side surfaces that are either anterior or posterior surfaces, and third and fourth surfaces that are either medial or lateral surfaces;
- a channel disposed in the main augmenting block and extending into an interior portion of the main augmenting block through one of the side surfaces of the main augmenting block;
- a secondary block means, adjustably positioned within the channel of the main augmenting block, for securing the augmentation device to a joint prosthesis, the secondary block means including a side surface that is either a lateral or medial surface and that corresponds in shape and orientation to the side surface of the main augmenting block through which the channel extends;
- and
- screw means associated with the secondary block means for adjusting the position of the secondary block means relative to the main augmenting block.
3 more elements
Dependencies are inferred from the claim text.