摘要:
A cam spreader having a substantially rigid body with a proximal end defining a handle and a distal end defining a cam. The cam has at least a first lobe, the first lobe having an outer surface in a first quadrant of the cam as viewed in cross section along a longitudinal central axis of the body. At least a portion of the outer surface, or profile, of the curve is mathematically driven and produces a constant incremental lift.
摘要:
An intervertebral prosthetic disc is disclosed and can be installed within an intervertebral space between a first vertebra and a second vertebra. The intervertebral prosthetic disc can include a first component that can have a first compliant layer that can be configured to engage the first vertebra and at least partially conform to a shape of the first vertebra. Further, the intervertebral prosthetic disc can include a second component that is configured to engage the second vertebra.
摘要:
Prosthetic joints, intervertebral prosthetic implants and methods of replacing intervertebral discs are provided. In an exemplary embodiment, a intervertebral prosthetic implant can include a pair of substantially rigid members and an articulation member having an articulation surface and configured to facilitate motion between the first and second members. The first member can be provided with at least one capillary channel configured to transport lubricious fluid proximate the articulation surface of the articulation member.
摘要:
A vertebral implant and insertion tool for placing implants in the spine are disclosed. The implant has a tool engaging surface configured for intimate engagement with the insertion tool. The insertion tool configuration is particularly suited for being gripped at a plurality of angles. The insertion tool having a gripping end adapted for intimate engagement with an implant at a plurality of angles.
摘要:
A delivery tool and method for placing bone growth material at an operative location a patient is provided. The delivery tool includes a housing having a chamber for receiving the bone growth material and a delivery mechanism operably coupled to the housing to displace the bone growth material through the chamber to a distal opening of the chamber for delivery to the operative site.
摘要:
A cam spreader having a substantially rigid body with a proximal end defining a handle and a distal end defining a cam. The cam has at least a first lobe, the first lobe having an outer surface in a first quadrant of the cam as viewed in cross section along a longitudinal central axis of the body. At least a portion of the outer surface, or profile, of the curve is mathematically driven and produces a constant incremental lift.
摘要:
An implant for insertion into a patient includes a superior surface disposed at a first end of the implant and an inferior surface disposed at a second, opposite end of the implant. The superior and inferior surfaces of the implant are constructed with curvatures that approximately match the morphology of vertebral endplates. The inferior surface and superior surface may include the same or different radii of curvature within the coronal and sagittal planes. The inferior surface and superior surface may be defined by spherical radii. The radius of the superior surface may be about 60 percent to 74 percent of the radius of the inferior surface.
摘要:
A vertebral implant for use in establishing desired spinal curvatures includes separate implant bodies. Each body may include an associated angle between inferior and superior surfaces of the body. Further, the implant bodies may be stacked so that the associated angles are oriented in different anatomical planes. The implant bodies may be secured to one another with a connector. The implant bodies may be used either independently or in conjunction with one another to achieve a desired spinal curvature. Each implant body may include bone engagement features that extend outward from the superior and inferior surfaces of the implant body. The implant bodies may include recesses that are positioned to correspond to the bone engagement protrusions in other implant bodies to allow contact between the inferior and superior surfaces of the respective implant bodies.
摘要:
A vertebral implant for use in vertebral fusion surgeries includes a body with an exterior surface and an interior surface. The interior surface defines an interior cavity into which bone growth promoting materials such as bone graft are insertable. The body also includes a plurality of apertures that extend from the exterior surface to the interior surface. Further, the vertebral implant includes a cutting feature to decorticate bone that protrudes outward from the exterior surface at each aperture. The cutting feature is shaped so that as a cutting force is applied to move the implant in a cutting direction, the removed bone matter is directed through the apertures and into the interior cavity.
摘要:
A method of performing a surgical procedure at an anatomical location in a patient is disclosed. An incision is made in the patient to provide access to an anatomical element. A pressure measurement device may then be inserted into a predetermined area of tissue surrounding the anatomical element. Tissue surrounding the anatomical element may then be retracted with a retractor to expose the anatomical element. A pressure reading from the pressure measurement device may then be obtained that is indicative of an amount of pressure experienced by the predetermined area of tissue as a result of the retraction.