Biphasic implant device transmitting mechanical stimulus
First Claim
1. A multiphasic device for repair or replacement of articular cartilage and the underlying bone, said device comprising a bone region and a malleable cartilage region said bone region comprising a porous material and a rigid penetrating force conductive material for conducting pressure forces experienced by said cartilage region through said bone region and into said external underlying bone tissue, thereby preventing bone tissue loss in said external underlying bone tissue.
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Accused Products
Abstract
Tissue implants prepared for the repair of tissues, especially avascular tissues such as cartilage. One embodiment presents an electric potential capable of receiving and accumulating desirable factors or molecules from surrounding fluid when exposed to dynamic loading. In another embodiment the implant promotes tissue conduction by retarding, restricting and controlling cellular invasion through use of gradients until competent tissue forms. Further embodiments of the tissue implants may be formed into a multi-phasic device that provides deep tissue mechanical stimulus by conduction of mechanical and fluid forces experienced at the surface of the implant.
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Citations
22 Claims
- 1. A multiphasic device for repair or replacement of articular cartilage and the underlying bone, said device comprising a bone region and a malleable cartilage region said bone region comprising a porous material and a rigid penetrating force conductive material for conducting pressure forces experienced by said cartilage region through said bone region and into said external underlying bone tissue, thereby preventing bone tissue loss in said external underlying bone tissue.
- 14. A multiphasic device for repair or replacement of articular cartilage and the underlying bone, said multiphasic device comprising a bone region and a malleable cartilage region, said bone region comprising at least a first material in the form of at least two porous rigid scaffolds separated by at least a second material in the form of a malleable elastic hydrogel, said hydrogel being capable of transferring hydrostatic pressure pulses through the bone region, said bone region preventing bone voids from forming in external underlying bone tissue by conducting pressure forces experienced in said malleable cartilage phase through said bone region and into said underlying bone tissue.
Specification