摘要:
The present application is directed to guides for inserting an elongated member into a patient. The guide generally includes an elongated shape with a distal end that is positioned within the patient, and a proximal end that may be positioned outside of the patient. The guide may include a channel formed between sidewalls. The channel is sized to receive the elongated member and guide the member into a predetermined location within the patient. In one embodiment, the guide is used with an insertion device that may include a pivoting carriage for initially inserting the guide and then the elongated member into the patient. The guide may also be used in a freehand technique that is positioned specifically within the patient by the surgeon.
摘要:
The present application is directed to guides for inserting an elongated member into a patient. The guide generally includes an elongated shape with a distal end that is positioned within the patient, and a proximal end that may be positioned outside of the patient. The guide may include a channel formed between sidewalls. The channel is sized to receive the elongated member and guide the member into a predetermined location within the patient. In one embodiment, the guide is used with an insertion device that may include a pivoting carriage for initially inserting the guide and then the elongated member into the patient. The guide may also be used in a freehand technique that is positioned specifically within the patient by the surgeon.
摘要:
The present application is directed to methods and devices that provide for asymmetrical movement of vertebral members. In one embodiment, first and second anchors connect the rod to the vertebral members. The rod may be fixedly connected to the first anchor, and movably connected to the second anchor. A limiting device may be positioned on one or both sides of the second anchor. The limiting device or devices control an extent of movement between the rod and the second anchor during vertebral motion. In one embodiment, the device controls an amount of flexion and extension of the vertebral members.
摘要:
The present application is directed to methods and devices that provide for asymmetrical movement of vertebral members. In one embodiment, first and second anchors connect the rod to the vertebral members. The rod may be fixedly connected to the first anchor, and movably connected to the second anchor. A limiting device may be positioned on one or both sides of the second anchor. The limiting device or devices control an extent of movement between the rod and the second anchor during vertebral motion. In one embodiment, the device controls an amount of flexion and extension of the vertebral members.
摘要:
Anchors to secure a rod to a vertebral member. The anchors may include a fastener with a distal end adapted to be connected to the vertebral member and a proximal end. A receiver may be operatively connected to the proximal end of the fastener. The receiver may include a channel sized to receive the rod. The receiver may further include at least one convex section that extends inward towards a longitudinal axis of the rod. The receiver may be formed in a unitary one-piece construction. The anchor may also include a securing member that connects to the receiver and may include a lower edge that extends into the channel and may contact the rod.
摘要:
A dynamic spinal stabilization assembly includes at least one mounting collar with a bore therethrough along a longitudinal axis, and a spinal rod slidably extending through the bore. The bore includes a medially disposed first section of reduced size that tapers both inwardly and outwardly relative to the axis, and respective end sections of relatively larger size. The bore may be defined by an interior wall that convexly curves toward the axis in the first section, advantageously with a constant non-zero radius of curvature. The bore profile helps minimize potential binding that may occur between the collar and the rod. The rod is coupled to bone anchoring elements, with at least one such connection being via the collar.
摘要:
A dynamic spinal stabilization assembly includes at least one mounting collar with a bore therethrough along a longitudinal axis, and a spinal rod slidably extending through the bore. The bore includes a medially disposed first section of reduced size that tapers both inwardly and outwardly relative to the axis, and respective end sections of relatively larger size. The bore may be defined by an interior wall that convexly curves toward the axis in the first section, advantageously with a constant non-zero radius of curvature. The bore profile helps minimize potential binding that may occur between the collar and the rod. The rod is coupled to bone anchoring elements, with at least one such connection being via the collar.
摘要:
Connection devices and methods for connecting a rod to a vertebral member. The device may include a receiver mounted to a proximal end of an anchor. The receiver includes a receiving section size to accommodate the rod and adjustable between open and closed orientations. One or more members are mounted to the receiver to adjust the size of the receiving section. In some embodiments, the movable members may be rotated and/or are rotatable to accommodate a rod at different angular positions relative to the anchor.
摘要:
A dynamic spinal stabilization assembly includes at least one mounting collar with a bore therethrough along a longitudinal axis, and a spinal rod slidably extending through the bore. The bore includes a medially disposed first section of reduced size that tapers both inwardly and outwardly relative to the axis, and respective end sections of relatively larger size. The bore may be defined by an interior wall that convexly curves toward the axis in the first section, advantageously with a constant non-zero radius of curvature. The bore profile helps minimize potential binding that may occur between the collar and the rod. The rod is coupled to bone anchoring elements, with at least one such connection being via the collar.
摘要:
A prosthetic device for insertion in a spinal column includes a first, second, and third members. The first member includes an inferiorly extending tab and is of a relatively flexible material. The second member includes a superiorly extending tab and is of a relatively flexible material. The third member defines a superior opening for receiving the inferiorly extending tab and an inferior opening for receiving the superiorly extending tab and is of a relatively stiff material. The device also includes a means for providing a rigid connection of the third member to a vertebra.