Composite orthopedic implant with modulus variations
First Claim
1. A load bearing orthopedic device for human implantation comprising:
- an extraosseous portion;
a fist intraosseous portion attached thereto; and
a second intraosseous portion attached to said first intraosseous portion;
the orthopedic device having a length, a longitudinal axis, and modulus that varies continuously along the length therefore, and being made of composite material comprising, a plurality of filaments disposed within a polymer matrix which is compatible with said filaments, tissue and other materials with which it comes into contact with and further wherein said filaments are wound or braided in a varying angle with respect to the longitudinal axis resulting in continuous modulus variation along the entire length of the device.
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Accused Products
Abstract
Novel composite orthopedic devices with modulus variations are disclosed. The device contains an extraosseous portion attached to a first intraosseous portion which is secured to a second intraosseous portion; the intraosseous portions may interface with the intramedullary canal of the human femur. The modulus varies along the length of the device, decreasing from the extraosseous portion to the second intraosseous portion. The variations in modulus are achieved by forming the device from a composite comprising filaments nonlinearly disposed about the longitudinal axes of the device and within a polymer matrix. The method of making the present orthopedic device is also disclosed.
81 Citations
13 Claims
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1. A load bearing orthopedic device for human implantation comprising:
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an extraosseous portion; a fist intraosseous portion attached thereto; and a second intraosseous portion attached to said first intraosseous portion; the orthopedic device having a length, a longitudinal axis, and modulus that varies continuously along the length therefore, and being made of composite material comprising, a plurality of filaments disposed within a polymer matrix which is compatible with said filaments, tissue and other materials with which it comes into contact with and further wherein said filaments are wound or braided in a varying angle with respect to the longitudinal axis resulting in continuous modulus variation along the entire length of the device. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An orthopedic device for human implantation comprising:
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an extraosseous portion; a first intraosseous portion attached thereto; and a second intraosseous portion attached to said first intraosseous portion; the orthopedic device having a length and being made of a plurality of layers of composite material said composite material comprising a plurality of filaments disposed within a polymer matrix which is compatible with said filaments, tissue and other materials with which it comes into contact with and said layers being independently arranged about extraosseous portion and the first and second portions, the first intraosseous portion, and the second intraosseous portion each having a modulus and a longitudinal axis, and each modulus decreases continuously along the entire length of the device from the modulus of the extraosseous portion to the modulus of the second intraosseous portion, and further wherein said filaments of each layer are wound or braided in a varying angle with respect to the longitudinal axis resulting in continuous modulus variation along the entire length of the device. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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Specification