摘要:
A surgical procedure according to which a member containing a material is inserted between two anatomical structures; and the member is caused to change state and expand into engagement with at least one of the structures.
摘要:
A surgical procedure and apparatus according to which force is applied to a member to compress the member, and the member is retained in its compressed state while it is inserted between two anatomical structures. The member is then allowed to move from its compressed state towards its original state and into engagement with the structures.
摘要:
A surgical procedure and apparatus according to which force is applied to a member to compress the member, and the member is retained in its compressed state while it is inserted between two anatomical structures. The member is then allowed to move from its compressed state towards its original state and into engagement with the structures.
摘要:
A spinal rod having first and second end members. The end members may be flexible or rigid. An expandable intermediate section is positioned between the first and second end members. The intermediate section may be axially expandable upon the introduction of a substance into a port that may be located in either of the first and second end members or the intermediate section. The intermediate section may be expandable between a first size, where the first and second end members are spaced a first distance apart, and a second enlarged size, where the first and second end members are spaced a second greater distance apart.
摘要:
The present application is directed to devices and methods for spacing apart spinous processes. In one embodiment, the device includes a body having a central portion that separates first and second sections. The body is constructed of a combination of an elastic material and a bio-absorbable material. When initially implanted within a patient, the bio-absorbable material affects the stiffness of the device. The device stiffness changes to that of the elastic material as the bio-absorbable material is absorbed by the body.
摘要:
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.
摘要:
A method for implanting an articulating intervertebral disc prosthesis into an intervertebral disc space comprises surgically accessing the intervertebral disc space through an opening on a first lateral side of the intervertebral disc space and inserting a first half of the articulating intervertebral disc prosthesis through the opening and into the intervertebral disc space. The method further comprises inserting a second half of the articulating intervertebral disc prosthesis through the opening on the first lateral side of the intervertebral disc space and positioning the first half of the articulating intervertebral disc prosthesis on a second lateral side of the intervertebral disc space. The method also comprises positioning the second half of the articulating intervertebral disc prosthesis on the first lateral side of the intervertebral disc space.
摘要:
An artificial spinal joint for creating at least a portion of a coupling between a superior vertebra and an inferior vertebra comprises a first joint half comprising a first intervertebral articulating assembly, a first rostral connection assembly, and a first caudal connection assembly. The joint further comprises a second joint half comprising a second intervertebral articulating assembly, a second rostral connection assembly, and a second caudal connection assembly. The joint further comprises a constraint component extending between the first rostral connection assembly and the first caudal connection assembly.
摘要:
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.
摘要:
Spinal prosthetic devices having selectable and/or changeable centers of rotation are disclosed. In one aspect, a spinal prosthesis kit includes a first component, a second component, and a plurality of inserts. The first component has a first articulating surface that includes a first articulating structure. The second component has a second articulating surface with a recessed opening adapted to receive one of the plurality of inserts. Each of the plurality of inserts includes a second articulating structure 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.