Abstract: An interspinous process implant is disclosed that includes a body defining a longitudinal axis, an interior cavity and opposed proximal and distal end portions, a pair of anchor wings operatively associated with the distal end portion of the body and mounted for pivotal movement relative to the longitudinal axis of the body between a first position housed within the interior cavity of the body and a second position extending radially outwardly from the body, an anchor collar operatively associated with the proximal portion of the body and mounted for axial movement relative to the longitudinal axis of the body between a first position spaced apart from the anchor wings and a second position approximated with the anchor wings, a pair of anchor blades operatively associated with the anchor collar and mounted for movement between a first position housed at least partially within the interior cavity of the body and a second position extending radially outwardly from the anchor collar.

Abstract: A spinal implant includes an elongated body dimensioned and configured to function as a spacer, for placement in a target interspinous process space, between two adjacent spinous processes, a distal anchor associated with a distal end of the body, and a proximal anchor mounted for longitudinal movement along the body between a first position spaced apart from the head and a second position approximated with the head, adapted to compress the two adjacent spinous processes, in conjunction with the distal anchor.

Abstract: A spinal implant includes an elongated body dimensioned and configured to function as a spacer, for placement in a target interspinous process space, between two adjacent spinous processes, a distal anchor associated with a distal end of the body, and a proximal anchor mounted for longitudinal movement along the body between a first position spaced apart from the head and a second position approximated with the head, adapted to compress the two adjacent spinous processes, in conjunction with the distal anchor.

Abstract: A bone fracture plate assembly including female and male plate portions. The female plate portion has a post, a female dovetail, and an extending arm with a group of ratchet teeth. The male plate portion has two upstanding posts, a male dovetail for coupling to the female dovetail so that the plate portions move linearly with respect to each other, a slot for the arm, and a pawl for engaging the ratchet teeth. A spring, coupled to the posts of the plate portions, dynamically connects the plate portions by applying a compressive load therebetween. The spring has a pair of elongated ears, each defining a slot to allow for relative movement of the plate portions. The ratchet teeth are engaged by the pawl to retain the plate portions together, and the spring mounts on the posts of the plate portions such that the spring biases the plate portions together.

Abstract: A bone plate assembly is disclosed which includes at least one plate segment having at least one aperture extending therethrough for receiving a head portion of a bone screw, and a structure supported by the plate segment and intersecting the aperture for retaining the head portion of the bone screw with respect to the plate segment.

Abstract: A spinal implant includes an elongated body dimensioned and configured to function as a spacer, for placement in a target interspinous process space, between two adjacent spinous processes, a distal anchor associated with a distal end of the body, and a proximal anchor mounted for longitudinal movement along the body between a first position spaced apart from the head and a second position approximated with the head, adapted to compress the two adjacent spinous processes, in conjunction with the distal anchor.

Abstract: A bone plate assembly is disclosed which includes at least one plate segment having at least one aperture extending therethrough for receiving a head portion of a bone screw, and a structure supported by the plate segment and intersecting the aperture for retaining the head portion of the bone screw with respect to the plate segment.

Abstract: A bone fracture plate assembly including female and male plate portions. The female plate portion has a post, a female dovetail, and an extending arm with a group of ratchet teeth. The male plate portion has two upstanding posts, a male dovetail for coupling to the female dovetail so that the plate portions move linearly with respect to each other, a slot for the arm, and a pawl for engaging the ratchet teeth. A spring, coupled to the posts of the plate portions, dynamically connects the plate portions by applying a compressive load therebetween. The spring has a pair of elongated ears, each defining a slot to allow for relative movement of the plate portions. The ratchet teeth are engaged by the pawl to retain the plate portions together, and the spring mounts on the posts of the plate portions such that the spring biases the plate portions together.

Abstract: A spinal implant includes an elongated body dimensioned and configured to function as a spacer, for placement in a target interspinous process space, between two adjacent spinous processes, a distal anchor associated with a distal end of the body, and a proximal anchor mounted for longitudinal movement along the body between a first position spaced apart from the head and a second position approximated with the head, adapted to compress the two adjacent spinous processes, in conjunction with the distal anchor.

Abstract: An interspinous process implant comprising an elongated body defining a longitudinal axis and an interior cavity. The implant includes engagement members movable between a first position stowed within the interior cavity and a second position deployed from the interior cavity. Each engagement member includes a central hub defining a hub axis perpendicular to the longitudinal axis of the body. Each central hub has an inwardly extending crank pin. The crank pins are radially offset from the hub axis and circumferentially spaced apart from one another. The implant also include an elongated drive shaft mounted for axial movement within the interior cavity and includes a distal actuation portion having upper and lower yokes positioned to cooperate with the crank pins. Upon axial movement of the drive shaft the crank pins translate through respective arcuate paths about the hub axis, causing corresponding rotational movement of the engagement members about the hub axis.

Abstract: An insertion device for deploying an implant includes an elongated main body having a distal locking portion for coupling to the implant and a proximal handle portion. The main body defines a central passage and the distal locking portion has outer ridges and slots to allow the outer ridges to flex radially inward when mounting to the implant. A plunger slides in the central passage for movement between an unlocked position for mounting the implant on the distal locking portion, a locked position for locking the implant on the distal locking portion, and an insertion instrument deployed position for deploying the actuation plunger to move the blades from the stowed position to the deployed position. A spike cap drive rotatably mounts on the main body having a socket end for engaging a drive nut on the implant to, in turn, move the spike cap.

Abstract: A bone plate assembly is disclosed which includes at least one plate segment having at least one aperture extending therethrough for receiving a head portion of a bone screw, and a structure supported by the plate segment and intersecting the aperture for retaining the head portion of the bone screw with respect to the plate segment.

Abstract: A vertebral column construct for stabilizing a segment of a vertebral column can include first and second plate segments, and a spring connected between adjacent plate segments. The spring can be adapted and configured to provide a predetermined preload between the first and second plate segments. Such a preload can advantageously enhance fusion across a bone graft. Alternatively, the spring can be adapted and configured to resist, by a predetermined degree, loading between the first and second plate segments. A cam can be provided on one of the first and second plate segments, wherein engagement between the cam and the cam surface prevents dynamic connection between the first and second plates. The cam can be adapted and configured to adjust a preload applied between segments, such as by adjusting tension in the spring.

Abstract: An interspinous process implant is disclosed that includes a body defining a longitudinal axis, an interior cavity and opposed proximal and distal end portions, a pair of anchor wings operatively associated with the distal end portion of the body and mounted for pivotal movement relative to the longitudinal axis of the body between a first position housed within the interior cavity of the body and a second position extending radially outwardly from the body, an anchor collar operatively associated with the proximal portion of the body and mounted for axial movement relative to the longitudinal axis of the body between a first position spaced apart from the anchor wings and a second position approximated with the anchor wings, a pair of anchor blades operatively associated with the anchor collar and mounted for movement between a first position housed at least partially within the interior cavity of the body and a second position extending radially outwardly from the anchor collar.

Abstract: A bone plate assembly is disclosed which includes at least one plate segment having at least one aperture extending therethrough for receiving a head portion of a bone screw, and a structure supported by the plate segment and intersecting the aperture for retaining the head portion of the bone screw with respect to the plate segment.

Abstract: A bone fracture plate assembly including female and male plate portions. The female plate portion has a post, a female dovetail, and an extending aim with a group of ratchet teeth. The male plate portion has two upstanding posts, a male dovetail for coupling to the female dovetail so that the plate portions move linearly with respect to each other, a slot for the arm, and a pawl for engaging the ratchet teeth. A spring, coupled to the posts of the plate portions, dynamically connects the plate portions by applying a compressive load therebetween. The spring has a pair of elongated ears, each defining a slot to allow for relative movement of the plate portions. The ratchet teeth are engaged by the pawl to retain the plate portions together, and the spring mounts on the posts of the plate portions such that the spring biases the plate portions together.

Abstract: A bone plate assembly is disclosed which includes at least one plate segment having at least one aperture extending therethrough for receiving a head portion of a bone screw, and a structure supported by the plate segment and intersecting the aperture for retaining the head portion of the bone screw with respect to the plate segment.

Abstract: A bone plate assembly is disclosed which includes at least one plate segment having at least one aperture extending therethrough for receiving a head portion of a bone screw, and a structure supported by the plate segment and intersecting the aperture for retaining the head portion of the bone screw with respect to the plate segment.