Abstract: Plates are described for securement to an intervertebral implant, and for fixation to a vertebral body so as to stabilize the implant during the surgical procedure, and in particular as the patient is repositioned during the surgical procedure, for instance from from a lateral decubitus position to a prone position. The plate includes a securement member that is movable between an unlocked configuration whereby the securement member is positioned for insertion into the implant, and a locked configuration that couples the securement member to the intervertebral implant. The securement member is further movable to a secured position that secures the plate to the intervertebral implant as to to define a rigid construct.

Abstract: Systems, methods, and devices are disclosed comprising a computer-assisted surgical system for an implant that is configured to be affixed by a plurality of peripheral screws to a bone of a patient.

Abstract: Described are methods and systems for computer aided surgery (CAS) comprising an augmented reality (AR) system configured to display augmented reality information including a virtual control element, a position tracking system separate from the AR system, wherein the position tracking system is configured to track positions of a physical object for interacting with the virtual control element, a controller configured to: receive planning information for a surgical procedure; determine a first input indicating that the physical object is interacting with the virtual control element; determine a change in position of the physical object interacting with the virtual control element indicating a first adjustment to a parameter of the planning information; receive a second input that either indicates a second adjustment to a parameter of the planning information different from the first adjustment or confirms the first adjustment to the planning information; and store the adjustment to the planning information.

Abstract: Instruments and methods for delivering bone cement are disclosed herein. In one exemplary embodiment, the instrument includes a cannulated bone screw having a head that is configured to be received within a rod receiver and a shank extending distally from the head and configured to extend distally from the rod receiver, a cannulated shaft having a distal end configured to extend into the shank of the cannulated bone screw and a proximal end configured to couple to a bone cement delivery system, and a retaining sleeve disposed around at least a portion of the cannulated shaft. The head of the bone screw has proximal and distal recesses therein, and a distal end of the retaining sleeve is configured to couple to the proximal recess.

Abstract: Bearing assemblies for selectively coupling to surgical instruments are disclosed. In one embodiment, a bearing assembly can include a housing with a cavity, a first race in the cavity that translates but does not rotate relative to the housing, bearing elements disposed in the first race that move radially in and out of a central passage of the first race, and a second race that is fixed in the cavity. The first race can be biased toward an opening of the cavity, the second race can surround the first race with an inner surface having a tapered diameter configured to contact the bearing elements as the first race moves distally relative to the second race and urge the plurality of bearing elements radially inward to selectively lock the bearing assembly to a surgical instrument disposed within the central passage of the first race.

Abstract: A user may attach a navigational tracker to a clamping tool. The clamping tool may include a foot configured to receive a screw. For example, the foot may include a hole configured to receive the screw. The user may attach the clamping tool to a coracoid process. The user may insert a screw into the coracoid process, for example through the foot of the clamping tool. The user may remove at least a portion of the clamping tool from the coracoid process. The navigational tracker may be attached to the foot of the clamping tool. The foot of the clamping tool may remain attached to the coracoid process, for example during a surgical procedure. The navigational tracker may include at least one electromagnetic sensor.

Abstract: Reamer instruments and related methods are disclosed herein, e.g., for reaming bone to facilitate in situ assembly of a bone anchor. In some embodiments, the instrument can include a feedback mechanism configured to alert the user when sufficient bone has been removed to facilitate assembly of the bone anchor. The feedback mechanism can be triggered by a movable shaft of the instrument that is displaced by the shank portion of the bone anchor as the surrounding bone is reamed.

Abstract: This disclosure relates generally to surgical instruments used to deliver locking or set screws to secure a rod or spinal fixation element relative to an implanted bone anchor or other spinal fixation construct during spine surgery. In one embodiment, the inserter instrument can include an inner driver shaft, a ratcheted outer sleeve, and a handle configured to receive the shafts therein. The inner driver shaft can receive a plurality of set screws on a distal end thereof. A side latch, pawl, or button can engage with the ratcheted outer sleeve to facilitate step-wise advancement of the sleeve relative to the driver shaft for set screw delivery. Step-wise advancement can be controlled using another button that causes movement of the side latch.

Abstract: Bearing assemblies for selectively coupling to surgical instruments are disclosed. In one embodiment, a bearing assembly can include a housing with a cavity, a first race in the cavity that translates but does not rotate relative to the housing, bearing elements disposed in the first race that move radially in and out of a central passage of the first race, and a second race that is fixed in the cavity. The first race can be biased toward an opening of the cavity, the second race can surround the first race with an inner surface having a tapered diameter configured to contact the bearing elements as the first race moves distally relative to the second race and urge the plurality of bearing elements radially inward to selectively lock the bearing assembly to a surgical instrument disposed within the central passage of the first race.

Abstract: This disclosure relates generally to surgical instruments used to deliver locking or set screws to secure a rod or spinal fixation element relative to an implanted bone anchor or other spinal fixation construct during spine surgery. In one embodiment, the inserter instrument can include an inner driver shaft, a ratcheted outer sleeve, and a handle configured to receive the shafts therein. The inner driver shaft can receive a plurality of set screws on a distal end thereof. A side latch, pawl, or button can engage with the ratcheted outer sleeve to facilitate step-wise advancement of the sleeve relative to the driver shaft for set screw delivery. Step-wise advancement can be controlled using another button that causes movement of the side latch.

Abstract: Bearing assemblies for selectively coupling to surgical instruments A bearing assembly can include a housing with a cavity, a first race in the cavity that translates but does not rotate relative to the housing, bearing elements disposed in the first race that move radially in and out of a central passage of the first race, and a second race that is fixed in the cavity. The first race can be biased toward an opening of the cavity, the second race can surround the first race with an inner surface having a tapered diameter configured to contact the bearing elements as the first race moves distally relative to the second race and urge the plurality of bearing elements radially inward to selectively lock the bearing assembly to a surgical instrument disposed within the central passage of the first race.

Abstract: Plates are described for securement to an intervertebral implant, and for fixation to a vertebral body so as to stabilize the implant during the surgical procedure, and in particular as the patient is repositioned during the surgical procedure, for instance from from a lateral decubitus position to a prone position. The plate includes a securement member that is movable between an unlocked configuration whereby the securement member is positioned for insertion into the implant, and a locked configuration that couples the securement member to the intervertebral implant. The securement member is further movable to a secured position that secures the plate to the intervertebral implant as to to define a rigid construct.

Abstract: Described are methods and systems for computer aided surgery (CAS) comprising an augmented reality (AR) system configured to display augmented reality information including a virtual control element, a position tracking system separate from the AR system, wherein the position tracking system is configured to track positions of a physical object for interacting with the virtual control element, a controller configured to: receive planning information for a surgical procedure; determine a first input indicating that the physical object is interacting with the virtual control element; determine a change in position of the physical object interacting with the virtual control element indicating a first adjustment to a parameter of the planning information; receive a second input that either indicates a second adjustment to a parameter of the planning information different from the first adjustment or confirms the first adjustment to the planning information; and store the adjustment to the planning information.

Abstract: Systems and methods are disclosed for computer aided surgery (CAS), comprising an augmented reality (AR) system configured to display augmented reality information, a position tracking system configured to track positions (e.g., location and orientation) of objects, an instrument coupled to a tracker detectable by the position tracking system, and a controller configured to: display augmented reality information using the AR system, the augmented reality information comprising: an indication of a predetermined (e.g.

Abstract: Instruments and methods for selectively coupling to an object are provided, for example surgical instruments that can form a rigid connection with an object and also be disassembled for cleaning, sterilization, etc. One embodiment includes an elongate shaft with a longitudinal groove, a first partial circumferential groove that intersects with a distal end of the longitudinal groove, and a second at least partial circumferential groove formed distal to the first partial circumferential groove. The instrument also includes a sleeve disposed over the elongate shaft that includes a protrusion extending from an internal wall that is received within the longitudinal groove to constrain movement of the sleeve relative to the elongate shaft. The sleeve further includes a lock that interfaces with the second at least partial circumferential groove when the protrusion is disposed in the first partial circumferential groove to further selectively constrain axial and rotational movement of the sleeve.

Abstract: Reamer instruments and related methods are disclosed herein, e.g., for reaming bone to facilitate in situ assembly of a bone anchor. In some embodiments, the instrument can include a feedback mechanism configured to alert the user when sufficient bone has been removed to facilitate assembly of the bone anchor. The feedback mechanism can be triggered by a movable shaft of the instrument that is displaced by the shank portion of the bone anchor as the surrounding bone is reamed.

Abstract: Instruments and methods for delivering bone cement are disclosed herein. In one exemplary embodiment, the instrument includes a cannulated bone screw having a head that is configured to be received within a rod receiver and a shank extending distally from the head and configured to extend distally from the rod receiver, a cannulated shaft having a distal end configured to extend into the shank of the cannulated bone screw and a proximal end configured to couple to a bone cement delivery system, and a retaining sleeve disposed around at least a portion of the cannulated shaft. The head of the bone screw has proximal and distal recesses therein, and a distal end of the retaining sleeve is configured to couple to the proximal recess.

Abstract: Instruments and methods for delivering bone cement are disclosed herein. In one exemplary embodiment, the instrument includes a cannulated bone screw having a head that is configured to be received within a rod receiver and a shank extending distally from the head and configured to extend distally from the rod receiver, a cannulated shaft having a distal end configured to extend into the shank of the cannulated bone screw and a proximal end configured to couple to a bone cement delivery system, and a retaining sleeve disposed around at least a portion of the cannulated shaft. The head of the bone screw has proximal and distal recesses therein, and a distal end of the retaining sleeve is configured to couple to the proximal recess.

Abstract: Reamer instruments and related methods are disclosed herein, e.g., for reaming bone to facilitate in situ assembly of a bone anchor. In some embodiments, the instrument can include a feedback mechanism configured to alert the user when sufficient bone has been removed to facilitate assembly of the bone anchor. The feedback mechanism can be triggered by a movable shaft of the instrument that is displaced by the shank portion of the bone anchor as the surrounding bone is reamed.

Abstract: Instruments and methods for selectively coupling to an object are provided, for example surgical instruments that can form a rigid connection with an object and also be disassembled for cleaning, sterilization, etc. One embodiment includes an elongate shaft with a longitudinal groove, a first partial circumferential groove that intersects with a distal end of the longitudinal groove, and a second at least partial circumferential groove formed distal to the first partial circumferential groove. The instrument also includes a sleeve disposed over the elongate shaft that includes a protrusion extending from an internal wall that is received within the longitudinal groove to constrain movement of the sleeve relative to the elongate shaft. The sleeve further includes a lock that interfaces with the second at least partial circumferential groove when the protrusion is disposed in the first partial circumferential groove to further selectively constrain axial and rotational movement of the sleeve.