摘要:
A medical instrument apparatus and method is provided for positioning and securing a spinal rod to a coupling device anchored to a vertebra. A reducer assembly shifts the spinal rod into place within the coupling device and a cap inserter assembly shifts a cap member into locking engagement with the coupling device to secure the spinal rod therein.
摘要:
A medical instrument apparatus and method is provided for positioning and securing a spinal rod to a coupling device anchored to a vertebra. A reducer assembly shifts the spinal rod into place within the coupling device and a cap inserter assembly shifts a cap member into locking engagement with the coupling device to secure the spinal rod therein.
摘要:
An active compression orthopedic plate includes a first and a second end cross member, at least one longitudinal member slideably coupling the first and second end cross member, and at least one compressive member configured to exert a compressive force on the first and second end cross members.
摘要:
According to one exemplary embodiment, an orthopedic bone fixation device for stabilizing a plurality of bone segments includes a bone plate and a screw assembly. The bone plate includes a body defining at least one thru-bore, wherein the thru-bore is defined to include a central cavity, the central cavity includes a split ring, a compliant member, or another positionable element configured to modify an exit diameter of the thru-bore. Additionally, an actuation member is coupled to the bone plate. According to one exemplary embodiment, actuation of the actuation member, either by rotation, sliding, or the like, causes the actuation member to engage the positionable member, thereby modifying the exit diameter of the thru-bore. Further, the screw assembly is configured to be coupled to the bone plate, wherein the screw assembly includes a bone screw having a head section and a thread section. When actuated, the positionable element is configured to reduce the exit diameter of the thru-bore sufficient to interfere with the head section of the bone screw, thereby preventing the screw from backing out.
摘要:
A tulip assembly configured to be coupled to a screw head having a first diameter includes a housing, wherein the housing defines an inner diameter configured to engage the first diameter of the screw head. The exemplary inner diameter of the housing being smaller than the first diameter of the screw head.
摘要:
According to one exemplary embodiment, an expandable ring is provided including a continuous ring member having no splits or breaks. According to one exemplary embodiment, the expandable ring is a compliant mechanism configured to expand and contract due to a relative movement of related sections of the continuous ring member.
摘要:
An orthopedic augment member and connection to an implant is disclosed. The connection may be formed between the implant, comprising a recess with a ledge formed therein, and the augment member by utilizing a fastener, and a connector, which may be configured and dimensioned to snap-fit into the recess formed in the implant forming an interference fit therebetween. The fastener may further comprise a body member with threads located thereon for matingly engaging a threaded wall defining a recess formed in the augment member, thereby securing the augment member to the recess of the implant.
摘要:
An orthopedic A/P cutting guide device, including a cut guide member, a support member and a positioning member for permitting both (i) rotational, and (ii) translational movement after the A/P cutting guide device has been attached to the distal femur by quick pins or other securing devices, is disclosed. Rotational movement may occur by loosening a knob thereby releasing the positioning member and the cut guide member from the support member, which may be fixed in position by the quick pins, and rotating the positioning member and the cut guide member together. Translational movement may occur by loosening a plurality of knobs thereby releasing the cut guide member from the support member and the positioning member, and moving the cut guide member anteriorly or posteriorly. After the device has been rotated and translated, the knobs may be tightened, thus securing the device from further movement.
摘要:
A fastener and a bone fixation assembly for the internal fixation of vertebral bodies such as a pedicle screw is provided which allows a detachable tulip to be provisionally locked to a pedicle screw in a first position, while securely locking the tulip assembly to the pedicle screw when in a second position. According to one exemplary embodiment, the tulip assembly includes a tulip body, a coupling saddle, and an expansion ring serving as a fastener. The fastener secures the tulip body to the pedicle screw, while the coupling saddle provides a means to provisionally lock the tulip body at an angle relative to the pedicle screw via an interference fit. Incline planes on the walls of the tulip body provide means to rotationally lock a rod within the tulip assembly, and fully lock the tulip assembly to at an angle relative to the pedicle screw.
摘要:
A connection member for percutaneously coupling to one or more orthopedic fasteners includes a fastener head securing member including a fastener head securing orifice having an axis defined by a wall member terminating in a seating member, an adjustable compression member coupled to a surface of the wall member, a rod coupled to a lower half of the wall member, and a fastener head receiving orifice formed in the wall member, wherein the fastener head receiving orifice is formed transverse to and intersects the screw head securing orifice axis.