Abstract:
A spinal implant (700) and implant control device for treating a spine are provided. An exemplary spinal implant can include an adjustable component (702) and a connector (706) in communication with the adjustable component, wherein the connector is configured for transcutaneous delivery of an agent to the adjustable component in a manner that affects a condition of the adjustable component.
Abstract:
An inter-transverse process spacer device for placement between two adjacent transverse processes, includes a spacer member with deformable first and second ends and may include a connector. The inter-transverse process spacer device may also include a flexible, fillable container for containing an injectable material that is compressible following implantation. The container is impermeable to the material it will be filled with. A structural mesh, for example, made of PET fabric and interwoven shape-memory alloy wire, provides structure for and containment of the container, as well as shape control of the inter-transverse process spacer device. The material can be injected into the container through a conduit. The inter-transverse process spacer device is sized and configured to allow for placement between adjacent transverse processes to produce a lateral force for correcting a spinal deformity. A method for correcting a spinal deformity using the inter-transverse process spacer device is also disclosed.
Abstract:
A multi-piece intervertebral disc augmentation implant that may be assembled within the annulus fibrosus is disclosed. The implant may be guided into a precise location through a relatively small opening in the annulus fibrosus with the aid of an elongated guide.
Abstract:
Spinal prosthetic devices having various engagement structures are disclosed. In one aspect a spinal prosthesis system comprises a first component with a first engagement structure extending from a surface of the first component at an oblique angle and a second component with a second engagement structure extending from a surface of the component at an oblique angle. In another aspect, a pair of flange members extend from the first engagement surface at an oblique angle such that the flange members are substantially perpendicular to one another. In another aspect, a first flange member extends transversely from the first engagement surface at a first oblique angle to the longitudinal axis of the surface and a second flange member extends transversely from the first engagement surface at a second oblique angle to the longitudinal axis such that the flange members are non-parallel.
Abstract:
A tissue extender includes a ring defining a proximal end opening to engage a head of a subcutaneous screw, a first extender portion coupled to the ring at a proximal end of the first extender portion, and a second extender portion coupled to the ring at a proximal end of the second extender portion. The first extender portion includes a first coupling portion disposed at a distal end of the first extender portion, and the second extender portion includes a second coupling portion at a distal end of the second extender portion. The first and second extender portions define two side openings disposed on opposite sides of the tissue extender. The distal ends of the first and second extender portions together define a distal end opening. The first coupling portion engages the second coupling portion when the tissue extender is in an extended state. The distal end opening is larger in the extended state than in an unextended state.
Abstract:
In one aspect, an intervertebral prosthetic device for implantation within a disc space between adjacent first and second vertebral endplates includes a body including a main body with an outer surface bearing portion configured to interface with and articulate relative to one of the first and second vertebral endplates. It also comprises an orientation protrusion shaped in a manner to at least partially inhibit rotation of the body in the disc space. The body is sized in at least one direction to fit inside a boundary defined by a travel path of the first vertebra relative to the second vertebra, the travel path forming an arc about a center of rotation of the first vertebra, the travel path being spaced from the center of rotation a distance substantially equivalent to the distance from the center of rotation to the second vertebral endplate.
Abstract:
An intervertebral prosthetic disc that is configured to be installed within an intervertebral space that can be established between an inferior vertebra and a superior vertebra is disclosed. The intervertebral prosthetic disc includes an inferior articular half that can be configured to engage the inferior vertebra and a superior articular half that can be configured to engage the superior vertebra. The inferior articular half can be configured to cooperate with the superior articular half to allow relative angular motion between the inferior vertebra and the superior vertebra when installed. Further, the intervertebral prosthetic device can be sized and shaped to pass through a psoas muscle without injuring a spinal cord or a sympathetic chain. The lenght of the implant can be in a range from 33mm to 50mm. The width of the implant can be in a range from 18mm to 29mm. The height of the implant can be in a range from 6mm - 22mm, including a rib of lmm - 6mm extending from the inferior and superior surfaces.
Abstract:
An intervertebral fusion device (30) for promoting fusion of first and second vertebrae comprises first and second endplate modules' (32, 34). Each endplate module includes an outer surface adapted to interface with vertebral bone and an opposite inner surface. The endplate modules further include an attachment feature (54, 55). A central module (36) is adapted to extend between the first and second endplate modules and is further adapted for connection with the attachment feature. A through passage extends through the outer and inner surfaces of the each of the first and second endplates and through the central module. Another intervertebral fusion device- (100) for use in revision procedures comprises upper and lower keels (108) and passages (112) extending through the device and an augmentation block (124) attached to the device and suited for replacing resected bone.
Abstract:
Spinal prosthetic devices having selectable and/or changeable centers of rotation are disclosed. In one aspect, a spinal prosthesis kit includes a first component (22), a second component (24), and a plurality of inserts (26). The first component has a first articulating surface (30) that includes a first articulating structure (44). The second component has a second articulating surface (37) with a recessed opening (38) adapted to receive one of the plurality of inserts. Each of the plurality of inserts includes a. second articulating structure (46) adapted to moveably mate with the first articulating structure. The second articulating structure is positioned in a different location on each of the plurality of inserts. In some embodiments, the articulating structures are moveably mating projections and recesses. In another aspect, a revisable prosthetic device having a first component, a second component, and an insert is provided.
Abstract:
Embodiments for a spinal implant having elements that are accessible by a surgical approach and releasably engagable by a surgical tool for improved revision of the spinal implant about a patient's spine.