Artificial joint components including synovial fluid deflecting structures and particle retaining structures
First Claim
1. An artificial joint prosthesis, comprising:
- a bone-facing surface of an artificial joint prosthesis, the bone-facing surface configured to face a bone-prosthesis interface in vivo;
a substantially rigid non-load bearing surface of the artificial joint prosthesis, the non-load bearing surface adjacent to the bone-facing surface of the artificial joint prosthesis;
at least one substantially flexible fluid deflection structure including a first end attached to the non-load bearing surface and a second end distal to the non-load bearing surface, the second end structured as free of contact with other portions of the artificial joint prosthesis and with the bone-prosthesis interface, the fluid deflection structure positioned to direct a flow of synovial fluid away from the bone-prosthesis interface in vivo during physiological movement of the artificial joint prosthesis; and
at least one particle retaining structure positioned to contact the directed flow of synovial fluid and configured to retain non-physiological particles present within the synovial fluid.
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Abstract
Artificial joint prostheses, including hip, knee and shoulder joints, are described. In some aspects, an artificial joint prosthesis includes: a bone-facing surface of an artificial joint prosthesis, the bone-facing surface configured to face a bone-prosthesis interface in vivo; a non-contact surface of the artificial joint prosthesis, the non-contact surface adjacent to the bone-facing surface of the artificial joint prosthesis; at least one fluid deflection structure attached to the non-contact surface, the fluid deflection structure positioned to direct a flow of synovial fluid away from the bone-prosthesis interface in vivo; and at least one particle retaining structure positioned to contact the directed flow of synovial fluid and configured to retain particles present within the synovial fluid.
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Citations
32 Claims
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1. An artificial joint prosthesis, comprising:
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a bone-facing surface of an artificial joint prosthesis, the bone-facing surface configured to face a bone-prosthesis interface in vivo; a substantially rigid non-load bearing surface of the artificial joint prosthesis, the non-load bearing surface adjacent to the bone-facing surface of the artificial joint prosthesis; at least one substantially flexible fluid deflection structure including a first end attached to the non-load bearing surface and a second end distal to the non-load bearing surface, the second end structured as free of contact with other portions of the artificial joint prosthesis and with the bone-prosthesis interface, the fluid deflection structure positioned to direct a flow of synovial fluid away from the bone-prosthesis interface in vivo during physiological movement of the artificial joint prosthesis; and at least one particle retaining structure positioned to contact the directed flow of synovial fluid and configured to retain non-physiological particles present within the synovial fluid.
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2. An artificial joint prosthesis, comprising:
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a bone-facing surface of an artificial joint prosthesis, the bone-facing surface configured to face a bone-prosthesis interface in vivo; a substantially rigid non-contact surface of the artificial joint prosthesis, the non-contact surface adjacent to the bone-facing surface of the artificial joint prosthesis; a plurality of substantially flexible fluid deflection structures including a first end attached to the non-contact surface and a second end distal to the non-contact surface, the second end structured as free of contact with other portions of the artificial joint prosthesis and with the bone-prosthesis interface, the fluid deflection structures positioned to direct a flow of synovial fluid away from the bone-prosthesis interface in vivo; and at least one particle retaining structure positioned to contact the directed flow of synovial fluid and configured to retain particles present within the synovial fluid. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9)
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10. A hip joint prosthesis, comprising:
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a bone-facing surface of a hip joint prosthesis, the bone-facing surface configured to face a bone-prosthesis interface in vivo; a substantially rigid non-contact surface of the hip joint prosthesis, the non-contact surface adjacent to the bone-facing surface of the hip joint prosthesis; a plurality of substantially flexible fluid deflection structures including a first end attached to the non-contact surface and a second end distal to the non-contact surface, the second end structured as free of contact with other portions of the hip joint prosthesis and with the bone-prosthesis interface, the fluid deflection structures positioned to direct a flow of synovial fluid away from the bone-prosthesis interface in vivo; and at least one particle retaining structure positioned to contact the directed flow of synovial fluid and configured to retain particles present within the synovial fluid. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A knee joint prosthesis, comprising:
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a bone-facing surface of a knee joint prosthesis, the bone-facing surface configured to face a bone-prosthesis interface in vivo; a substantially rigid non-contact surface of the knee joint prosthesis, the non-contact surface adjacent to the bone-facing surface of the knee joint prosthesis; a plurality of substantially flexible fluid deflection structures including a first end attached to the non-contact surface and a second end distal to the non-contact surface, the second end structured as free of contact with other portions of the knee joint prosthesis and with the bone-prosthesis interface, the fluid deflection structures positioned to direct a flow of synovial fluid away from the bone-prosthesis interface in vivo; and at least one particle retaining structure positioned to contact the directed flow of synovial fluid and configured to retain particles present within the synovial fluid. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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25. A shoulder joint prosthesis, comprising:
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a bone-facing surface of a shoulder joint prosthesis, the bone-facing surface configured to face a bone-prosthesis interface in vivo; a substantially rigid non-contact surface of the shoulder joint prosthesis, the non-contact surface adjacent to the bone-facing surface of the shoulder joint prosthesis; a plurality of substantially flexible fluid deflection structures including a first end attached to the non-contact surface and a second end distal to the non-contact surface, the second end structured as free of contact with other portions of the shoulder joint prosthesis and with the bone-prosthesis interface, the fluid deflection structures positioned to direct a flow of synovial fluid away from the bone-prosthesis interface in vivo; and at least one particle retaining structure positioned to contact the directed flow of synovial fluid and configured to retain particles present within the synovial fluid. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32)
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Specification