摘要:
An apparatus and method for distracting, in a given direction, and supporting two tissue surfaces is provided. A plurality of wafers are consecutively inserted between the two tissue surfaces to create a column of wafers. The column of wafers is oriented between the tissue surfaces so as to expand in the given direction as the wafers are consecutively added to the column. A wafer insertion apparatus includes a wafer cartridge configured to carry a stack of wafers to be inserted into the space, a track assembly including a first track for carrying a wafer toward the space, a second track and means for preventing retrograde movement of a wafer within the first track, an advancer/pusher mechanism slidably disposed within the second track and operable on a wafer within the first track to advance the wafer along the first track, and an advancement gun supporting the wafer cartridge and track assembly and having a trigger operably coupled to the advancer/pusher mechanism to propel the mechanism along the second track.
摘要:
An apparatus and method for distracting, in a given direction, and supporting two tissue surfaces is provided. A plurality of wafers are consecutively inserted using a wafer insertion apparatus between the two tissue surfaces to create a column of wafers. A detachable wafer assembly is provided that includes a base wafer initially associated with a track assembly of a wafer insertion apparatus. The base wafer is dislodged from the track assembly so that the base wafer is left within the distraction site as the track assembly is removed. A top cap wafer is provided that is situated at the top of the wafer stack, in which the top cap wafer is larger than the remaining wafers to form a gap surrounding the stack to receive biologic material.
摘要:
Embodiments of the invention include devices and methods for implanting a vertebral body spacer. A lateral surgical approach is contemplated with some disclosed procedures. Instruments of some embodiments are insertable into a disc space to achieve distraction, to determine a desired disc space height, and to select a corresponding implant.
摘要:
This disclosure is directed to a method capable of maintaining the fatigue performance of a bone-engaging implant after surface texturing through the imparting of a residual compressive stress. A residual compressive stress is imparted via peening or another process. The peened surface is then roughened to improve mechanical adhesion for bone fixation via grit blasting or another process. The depth of penetration of the roughened texture is less than the depth of the residual compressive stress.
摘要:
A device for promoting fusion of first and second vertebrae, comprises a first solid region formed of non-porous polyetheretherketone (PEEK) and a first porous region including a porous PEEK architecture. The first porous region is bonded to the first solid region.
摘要:
Embodiments of the invention include devices and methods for implanting a vertebral body spacer. A lateral surgical approach is contemplated with some disclosed procedures. Instruments of some embodiments are insertable into a disc space to achieve distraction, to determine a desired disc space height, and to select a corresponding implant.
摘要:
Embodiments of the invention include devices and methods for implanting a vertebral body spacer. A lateral surgical approach is contemplated with some disclosed procedures. Instruments of some embodiments are insertable into a disc space to achieve distraction, to determine a desired disc space height, and to select a corresponding implant.
摘要:
A method which may be used for introducing a residual compressive stress into a body portion of an implantable device configured for implantation in a patient. The body portion may include an outer surface. The method also may include texturing the outer surface of the implantable device to increase a roughness of the outer surface. The outer surface may be coated with an osteointegrating material to increase osteointegration.
摘要:
A spinal stabilization system includes a first stabilization member and a second stabilization member engaged to one another in end-to-end fashion. A coupling system adjustably secures the stabilization members in axial position relative to one another while allowing the relative axial positioning to be adjusted to accommodate growth or other condition or arrangement.
摘要:
A motion-preserving implant device for insertion between two bones is disclosed. The motion-preserving implant includes a first plate for engaging with a first bone and a second plate for engaging with a second bone. An articulation member is positioned between the two plates and a motion-controlling member attached to one or both of the plates. In some embodiments, the motion-controlling member is configured to constrain, dampen, and/or bumper the relative motion between the two plates.