摘要:
A ratcheted spinal device including a variable-length member including a ratchet mechanism that has an operative configuration that allows a change in length of the variable-length member in one direction and prevents a change in length of the variable-length member in an opposite direction, wherein the variable-length member includes polyaxial-joint attachment members for attachment to bone, which permit pivoting movement of the attachment members about more than one pivoting axis.
摘要:
A spinal implant (100) including first spinal attachment member (104) for attaching to a first spinal portion (101), second spinal attachment member (103) for attaching to a second spinal portion, and a post - implantation variable dimension device disposed between the first and second spinal attachment members, which is operable after completing surgery in which said spinal implant was installed into a patient, to cause relative movement between the first and second spinal attachment members.
摘要:
An endoprosthesis (10) including first and second attachment surfaces (20,22) for attachment to spinal structure, and a fixation element (24) rotatingly disposed in at least one of the attachment surfaces, the fixation element being rotatable between a stowed position, wherein the fixation element does not substantially protrude from the at least one of the attachment surfaces, and a deployed position, wherein the fixation element does substantially protrude from the at least one of the attachment surfaces for entering and being fixed to the spinal structure.
摘要:
Apparatus including a first spinal prosthetic member that may articulate with a second spinal prosthetic member, the first and second spinal prosthetic members flexing relative to one another about a lateral-medial axis corresponding to a lateral-medial axis of a body, and a flexure limiting member attached to the first and second spinal prosthetic members that limits flexure about the lateral-medial axis.
摘要:
A spinal implant including first spinal attachment member (47) for attaching to a first spinal portion (45), second spinal attachment member (48) for attaching to a second spinal portion (46), and a fluid actuated (hydraulic or pneumatic) post-implantation variable dimension device (49) disposed between the first and second spinal attachment members (47,48), which is operable after completing surgery in which said spinal implant was installed into a patient, to cause relative movement between the first and second spinal attachment members.
摘要:
A facet support assembly including at least one rod including an upper portion rigidly fixed to a spinal fastener, and a lower portion configured to support an inferior articular process, wherein when the spinal fastener is secured to a pedicle of a lumbar vertebra, the lower portion of the at least one rod abuts against and supports the inferior articular process of the same lumbar vertebra.
摘要:
A method for surface treatment of a pedicle screw including roughening a surface of a pedicle screw by blasting the surface with a Resorbable Blast Media (RBM).
摘要:
Spinal reamer apparatus (10) including a reference base (12) with mounting provisions (14) for mounting in a region of posterior lumbar spinal structure, a non-straight track (16) fixed to the reference base, and at least one reaming cutter element (18) arranged to move along the track. The mounting provisions may be holes positioned to corespond wth pedicle screws or with mounting holes of a prosthesis. The reaming cutter element may comprise upper and lower cutting edges (20) at opposite ends of a cutter body (22). The apparatus is suited in particular for preparing the spine for disc replacement.
摘要:
A facet distraction prosthesis (10, 30) includes an array of facet distraction base elements (12, 32) connected to each other by one or more connector elements (14, 34). A pair of diagonally adjacent base elements (12, 32) are connected to each other by a set of or more connector elements (14, 34) which intersects with another set of one or more connector elements (14, 34) that connects another pair of diagonally adjacent base elements (12, 32). The connector elements (14, 34) are flexible so that the base elements (12, 32) can flex with respect to each other and adapt to a geometry of a facet joint.
摘要:
A method for surface treatment of a pedicle screw including roughening a surface of a pedicle screw by blasting the surface with a Resorbable Blast Media (RBM).