Mosaic implants, kits and methods for correcting bone defects
Inventors
Engstrand, Thomas • Bohlin, Jan • Åberg, Jonas • Engqvist, Håkan
Assignees
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Publication Number
US-10076416-B2
Publication Date
2018-09-18
Expiration Date
Abstract
A mosaic implant conformable to a curved surface, comprising first and second implant sections coupled along a beam portion extending across a length of the implant, each of the implant sections having—a plurality of biocompatible mosaic plates, and—a plurality of wires which interconnect the plates with one another. The mosaic implant is configured to be deformable such that at least a portion of the mosaic implant is conformable to a curved surface, with the beam portion providing structural support which resists inward deformation of the curved portion of the implant. A kit for forming a mosaic implant is also provided, along with a method for correcting a bone defect in a patient.
Core Innovation
The invention relates to a mosaic implant for correcting bone defects. The implant comprises a plurality of spaced-apart biocompatible mosaic plates with a gap between adjacent plates, and the mosaic plates are interconnected by a wire mesh that includes wire segments and eyelets enclosed within the plates, with wire segments extending between adjacent plates through the eyelets.
At least a portion of the wire segments include deformation zones located in the gap between adjacent mosaic plates. The deformation zones facilitate deformation of the mosaic implant and reduce the risk of ceramic fracture upon bending of the wire mesh, while the implant is configured to conform to curved defect surfaces, including substantially spheroidal and similar curved surfaces.
A support frame can include a wire rim extending about at least a portion of the periphery of the support frame and connected to a portion of the eyelets by wire struts. The described structural elements include a wire rim, a support girder or beam portion, interconnected sections to resist inward deformation, and retention eyelets for fastening to bone, with configurations for kit-based selection of preconfigured sections.
Claims Coverage
The provided document includes two independent claims. Across these independent claims, the inventive coverage focuses on a mosaic implant with biocompatible mosaic plates interconnected by a wire mesh via eyelets, and on additional structural configurations that facilitate deformation while reducing fracture risk and provide peripheral support via a wire rim.
Deformation-zone wire mesh interconnecting spaced mosaic plates
A mosaic implant comprising a plurality of spaced-apart biocompatible mosaic plates with a gap between adjacent plates; a wire mesh interconnecting the plates comprising wire segments and eyelets enclosed within the plates; wherein wire segments are connected to each other by the eyelets and extend between adjacent plates; and wherein at least a portion of the wire segments include deformation zones located in the gap between adjacent mosaic plates which facilitate deformation of the mosaic implant so as to reduce the risk of ceramic fracture upon bending of said wire mesh.
Wire-mesh support frame with wire rim connected by wire struts
A mosaic implant for correcting a bone defect in a patient, comprising a plurality of biocompatible mosaic plates; a support frame including a wire mesh interconnecting the plates with one another, the wire mesh comprising a plurality of wire segments interconnected by a plurality of eyelets enclosed within said plates; wherein said support frame further comprises a wire rim extending about at least a portion of the periphery of the support frame and connected to a portion of said eyelets by wire struts.
Overall, the independent claim coverage protects a spaced mosaic plate mosaic implant with a wire-mesh interconnection in which deformation zones in gaps between plates facilitate bending while reducing ceramic fracture risk, and a bone-defect-correcting mosaic implant using a wire-mesh support frame that further includes a peripheral wire rim connected to eyelets by wire struts.
Stated Advantages
Reduces the risk of ceramic fracture upon bending of the wire mesh.
Documented Applications
Correcting bone defects in a patient.
Cranioplasty/cranial defects.
Zygoma and mandible.
Segmental long-bone wrap (e.g., femur defects).
Bore-hole/burr hole implants.
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