321 results about "Bone fusion" patented technology

A self-drilling bone fusion screw apparatus is disclosed which includes at least first and second sliding boxes. A first screw member having a tapered end and a threaded body is disposed within the first sliding box, and a second screw member having a tapered end and a threaded body disposed within the second sliding box. An adjuster adjusts the height of the sliding boxes. The screw members are screwed into vertebral bodies in order to fuse the vertebral bodies together. A plurality of the self-drilling bone fusion screw apparatuses may be attached together and / or integrated via a plate or cage. Also disclosed is a cervical facet staple that includes a curved staple base and at least two prongs attached to the bottom surface of the curved staple base.

The present invention provides a fusion cage comprising a first housing, a second housing, and an alignment portion adapted to be received between the first and second housings such that the first and second housings are held in place by said alignment portion. The alignment portion can be varied in shape such that the fusion cage is wedge-like in shaped, or slanted to one side. Further, the alignment portion is constructed of a radiolucent material to allow for visualization of a bone fusion within the fusion cage.

A bone fusion device can include elongated interlockable segments, each having an engaging surface interlockable with the engaging surface of another segment. The segments can be inserted in between bones one at a time. A device can include an outer expandable component having outer expandable members insertable to a location between bones in an unexpanded configuration and an inner expander including surface engaging portions interlockable with inner surface engaging portions in the outer expandable members. A device can include the inner expander having an outwardly flared proximal portion that can interlock with the proximal end of the outer expandable members. A device can include a locking bridge expandable with an expandable body, such as an inflatable balloon, and movable to a locked expanded configuration. A bone fusion system, a bone fusion device kit, and / or a method for fusing bone can include such a bone fusion device.

A bone fusion device provides stability to bones during a bone fusion period. The bones include, for example, the vertebrae of a spinal column. The bone fusion device comprises one or more extendable tabs attached to the bone fusion device by associated rotating means. The bone fusion device is preferably inserted by using an arthroscopic surgical procedure. During arthroscopic insertion of the device, the tabs are pre-configured for compactness. In this compact configuration, the tabs are preferably deposed along and / or within an exterior surface of the bone fusion device. After the bone fusion device has been positioned between the bones, one or more tab(s) are extended. In the preferred embodiment, the position of each tab is related to a positioning element and extending blocks. Typically, the tabs advantageously position and brace the bone fusion device in the confined space between the bones until the bones have fused.

An improved bone graft is provided for human implantation, particularly such as a spinal fusion cage for implantation into the inter-vertebral space between two adjacent vertebrae. The improved spinal fusion cage includes a substrate block of high strength biocompatible material having a selected size and shape to fit the anatomical space, and a controlled porosity analogous to natural bone. The substrate block may be coated with a bio-active surface coating material such as hydroxyapatite or a calcium phosphate to promote bone in growth and enhanced bone fusion. Upon implantation, the fusion cage provides a spacer element having a desired combination of mechanical strength together with osteoconductivity and osteoinductivity to promote bone ingrowth and fusion, as well as radiolucency for facilitated post-operative monitoring. The fusion cage may additionally carry one or more natural or synthetic therapeutic agents for further promoting bone ingrowth and fusion.

An intramedullary fixation assembly for bone fusion includes a first member positioned at a proximal end of the intramedullary fixation assembly, and a second member positioned at a distal end of the intramedullary fixation assembly. The first member is slideably coupled to the second member and provides for an interference fit with the second member. The intramedullary fixation assembly includes an optional cannulated threaded screw member having a plurality of threads on an external surface of the threaded screw member.

A self-drilling bone fusion screw apparatus is disclosed which includes at least first and second sliding boxes. A first screw member having a tapered end and a threaded body is disposed within the first sliding box, and a second screw member having a tapered end and a threaded body disposed within the second sliding box. An adjuster adjusts the height of the sliding boxes. The screw members are screwed into vertebral bodies in order to fuse the vertebral bodies together. A plurality of the self-drilling bone fusion screw apparatuses may be attached together and / or integrated via a plate or cage. Also disclosed is a cervical facet staple that includes a curved staple base and at least two prongs attached to the bottom surface of the curved staple base.