摘要:
A spinal implant system including components designed to be affixed to the spinal column. The system includes spinal rods, attachment devices, and interpositional sleeves for securing the attachment devices to the rods. The attachment devices may be various types of spinal hooks, screws, couplers, rod connectors, clamps, or other such devices.
摘要:
In one aspect, an intervertebral prosthetic device for implantation within a disc space between adjacent first and second vertebral endplates includes a body including a main body with an outer surface bearing portion configured to interface with and articulate relative to one of the first and second vertebral endplates. It also comprises an orientation protrusion shaped in a manner to at least partially inhibit rotation of the body in the disc space. The body is sized in at least one direction to fit inside a boundary defined by a travel path of the first vertebra relative to the second vertebra, the travel path forming an arc about a center of rotation of the first vertebra, the travel path being spaced from the center of rotation a distance substantially equivalent to the distance from the center of rotation to the second vertebral endplate.
摘要:
A method of securing vertebrae includes inserting a first pedicle screw into a first pedicle of a first vertebra. The first pedicle screw includes a first channel running perpendicular to a first central axis of the first pedicle screw. The first pedicle screw has a first engagement structure. The method further includes inserting a second pedicle screw into a second pedicle of a second vertebra. The second pedicle screw includes a second channel running perpendicular to a second central axis of the second pedicle screw. The second pedicle screw has a second engagement structure. The method also includes inserting a guidewire through the first and second channels, threading a tether attached to an end of the guidewire through the first and second channels, securing the tether to the first pedicle screw, applying tension to the tether, and securing the tether to the second pedicle screw.
摘要:
A tissue extender includes a ring defining a proximal end opening to engage a head of a subcutaneous screw, a first extender portion coupled to the ring at a proximal end of the first extender portion, and a second extender portion coupled to the ring at a proximal end of the second extender portion. The first extender portion includes a first coupling portion disposed at a distal end of the first extender portion, and the second extender portion includes a second coupling portion at a distal end of the second extender portion. The first and second extender portions define two side openings disposed on opposite sides of the tissue extender. The distal ends of the first and second extender portions together define a distal end opening. The first coupling portion engages the second coupling portion when the tissue extender is in an extended state. The distal end opening is larger in the extended state than in an unextended state.
摘要:
A surgical staple is disclosed and can include a base and at least one tine that can extend from the base. Further, at least one tissue engagement structure can be incorporated into the at least one tine. The at least one tissue engagement structure can be moved between a retracted configuration and an extended configuration.
摘要:
The invention is directed to an external fixator assembly for externally fixating and stabilizing a bone. The external fixator assembly includes a frame member; a bone piercing member insertable into the bone; and a clamp. The clamp includes a body with a slot, a hole, and a threaded opening therein. The threaded opening is in communication with the slot. The bone piercing member is received within the hole. The frame member is disposed within the slot. The clamp further includes a set screw in the threaded opening. The set screw is engaged with the frame member and holds the frame member within the slot.
摘要:
A template is disclosed for use in preparing a contouring model for a bone plate to be implanted on a bone. The bone plate is the type comprising an elongated strip having at least two screw holes formed therein, adjacent screw holes being joined together by unapertured regions of the elongated strip. The template has a silhouette substantially resembling a selected bone plate, with first portions corresponding to the locations of the screw holes. The first portions are bridged by second portions corresponding to the locations of the unapertured regions of the strip. The second portions are of reduced width relative to a corresponding unapertured region of the bone plate, whereby the template is deformable in the region of the second portions by manual pressure.
摘要:
The coupler of this invention includes a two-piece coupler for a spinal rod including a yoke and a coupler body which may be positioned to clamp onto the spinal rod at an angle other than perpendicular relative to the rod. The yoke and body permit the spinal rod to be positioned plus or minus 15 degrees out of true perpendicular relative to the rod without sacrificing clamping strength. This advantage is particularly useful when the couplers are connected to a rod-to-rod interconnecting device to permit the rods to be less than parallel relative to one another. The accommodation of less than parallel rods or the non-perpendicular connection of device to the spinal rods reduces the non-functional exact positioning of the spinal rods during surgery as is required by current couplers. Further, the coupler can be placed from a superior position requiring minimal space without the need for screws to provide fixation to the rod.
摘要:
A spacer for inserting between vertebral members. The spacer has a non-spherical shape with an anterior section having a first shape and a posterior section having a different shape. An attachment means is positioned within the posterior section, and may include a receiver for attachment with an insertion device, and an anti-rotation mechanism for assistance in removing the spacer from the insertion device. Embodiments of using the spacer is also disclosed which may include inserting the spacer between the vertebral members in a generally posterior approach. Once inserted, the insertion device acts with the anti-rotation device to remove a connection mechanism from the receiver. The spacer remains between the vertebral members and provides relief to the patient.