Implants based on engineered metal matrix composite materials having enhanced imaging and wear resistance
First Claim
1. A spinal implant assembly for insertion between adjacent first and second vertebrae, said implant comprising:
- a first plate including a first surface configured to engage the first vertebra and an opposite second surface, anda second plate including a third surface configured to engage the second vertebra and an opposite fourth surface having a bearing portion configured to engage the second surface of the first plate, wherein said first and second plates comprise a metal matrix composite including a metallic matrix and a reinforcing component dispersed within the metallic matrix; and
wherein the first plate exhibits a concentrate gradient of the reinforcing component decreasing from the first surface to the second surface.
3 Assignments
0 Petitions
Accused Products
Abstract
This invention relates to an implantable medical device to treat a patient. The implantable device can be an orthopedic device such as a spinal implant including, but not restricted to, a disc or nucleus pulposus prosthesis, a spinal rod assembly, or a bone fixation plate. The orthopedic device can be formed to include a metal matrix composite that provides enhanced wear and diagnostic imaging techniques. In other forms, the present invention provides an implantable medical device that includes a porous metal matrix composite that can deliver a therapeutic composition to a patient. In still other forms, the present invention provides an implantable electrical device or lead formed to include a metal matrix composite that provides lower polarization and interfacial impedance and allows enhanced sensing of the physiological signals.
322 Citations
53 Claims
-
1. A spinal implant assembly for insertion between adjacent first and second vertebrae, said implant comprising:
-
a first plate including a first surface configured to engage the first vertebra and an opposite second surface, and a second plate including a third surface configured to engage the second vertebra and an opposite fourth surface having a bearing portion configured to engage the second surface of the first plate, wherein said first and second plates comprise a metal matrix composite including a metallic matrix and a reinforcing component dispersed within the metallic matrix; and wherein the first plate exhibits a concentrate gradient of the reinforcing component decreasing from the first surface to the second surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A spinal implant assembly for insertion between adjacent first and second vertebrae, said implant comprising:
-
a first plate including a first surface configured to engage the first vertebra and an opposite second surface, and a second plate including a third surface configured to engage the second vertebra and an opposite fourth surface having a bearing portion configured to engage the second surface of the first plate, wherein said first and second plates comprise a metal matrix composite including a metallic matrix and a reinforcing component dispersed within the metallic matrix; and wherein the first plate or the second plate comprises a metal matrix composite having a bimodal porosity. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
-
-
22. A spinal implant assembly for insertion between adjacent first and second vertebrae, said implant comprising:
-
a first plate including a first surface configured to engage the first vertebra and an opposite second surface, and a second plate including a third surface configured to engage the second vertebra and an opposite fourth surface having a bearing portion configured to engage the second surface of the first plate, wherein said first and second plates comprise a metal matrix composite including a metallic matrix and a reinforcing component dispersed within the metallic matrix; and wherein the first plate comprises a first metal matrix composite and the second plate comprises a second metal matrix composite different from the first metal matrix composite. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
-
-
42. A spinal implant assembly for insertion between adjacent first and second vertebrae, said implant comprising:
-
a first plate including a first surface configured to engage the first vertebra and an opposite second surface, and a second plate including a third surface configured to engage the second vertebra and an opposite fourth surface having a bearing portion configured to engage the second surface of the first plate, wherein said first and second plates comprise a metal matrix composite including a metallic matrix and a reinforcing component dispersed within the metallic matrix; and wherein the first surface of the first plate has a bimodal porous structure.
-
-
43. A medical device comprising:
- a disc prosthesis comprising a first layer including a first metal matrix composite comprising a metal matrix and a first reinforcing component dispersed within the matrix, and a second layer including a second metal matrix composite.
- View Dependent Claims (44, 45, 46, 47, 48, 49, 50, 51, 52, 53)
Specification