A device (25) for drilling holes in bone and configured to determine bone screw length, the device (25) including a surgical power drill (2) comprising: a) a housing (12) and; b) a measuring device (1) releasably attached or fixed to the housing (12), wherein the measuring device (1) is configured to measure the distance (x) covered by the housing (12) in the direction of the longitudinal axis (7) and relative to a surface of an implant (26) or a bone during a drilling process, wherein the measuring device (1) comprises a processing unit (14) to record the distance (x) covered with respect to time; the processing unit (14) comprises one or more differentiators to determine at least the first and second derivatives of the distance (x) covered with respect to time; and the processing unit (14) further comprises a peak detector to analyze one or more peaks occurring in the graph of the highest derivative with respect to time, and wherein the measuring device (1) comprises a laser device or an ultrasound position sensor for displacement assessment.

A system includes a cartridge having an elongate body extending from a first end to a second end and having a top side and a bottom side. The cartridge defines a first hole adjacent to the first end that extends through the cartridge from the bottom side to the top side. The top side of the cartridge defines a pair of parallel slots that extend perpendicular with respect to a longitudinal axis of the cartridge. Each slot of the pair of parallel slots is equidistant from a central axis defined by the first hole.

A discectomy tool comprising: a) a cannula having an outer surface having a longitudinal bore therein, a proximal end and a distal end; b) a steering wire disposed in the longitudinal bore; c) a flexible, hollow transmission shaft disposed in the cannula, the shaft having a throughbore, a proximal end portion, a distal end portion and an outer surface having a thread extending therefrom; d) an irrigation source fluidly connected to the throughbore; e) a cutting tip attached to the distal end portion of the transmission shaft.

A surgical tool-piece and a coupling mechanism for a surgical tool-piece are provided. The surgical tool-piece is configured to be driving by a driving mechanism. The surgical tool-piece comprises a shaft having a longitudinal axis running from a distal end of the shaft to a coupling portion at a proximal end of the shaft. The coupling portion comprises a driving section comprising at least three indentations located around the circumference of the coupling portion, each indentation being configured to receive a corresponding driving element of the driving mechanism to secure the tool-piece both longitudinally and rotationally.

Assemblies, systems, and methods are directed at a neuromonitoring bone drill bit. The assembly may include a surgical bone drill bit, a neuromonitoring connection in electrical communication with the drill bit, and a shield extending over a distal end of the drill bit. The shield may be configured to withdraw proximally as the drill bit is advanced into a subject's bone. The assembly may be connected to a surgical drill and used in a surgical spinal procedure. In operation, the assembly may be advanced to a subject's bone at a surgical site and the drill bit may rotate into the subject's bone. In response, the shield may engage the bone and the drill bit may be advanced with respect to the shield. The shield may electrically insulate tissue from electrical current passing through the drill bit as it is inserted at the surgical site.

Tool assemblies and methods are disclosed, such as for robotic-assisted surgery with a robot. The tool assembly includes a working tool (44) sized to be coaxially movable within the dilator (60). A locking mechanism (70) releasably couples the working tool (44) and the dilator (60) to one another such that, in a locked configuration, the robot supports the tool assembly. An actuator (86) is configured to receive an input to move the locking mechanism to an unlocked configuration and permit axial movement of the working tool within the dilator. The dilator (60) may include at least one spike (104) disposed within the grooves (128) to penetrate bone. The dilator (60) may include an inner sleeve and outer sleeve coaxially movable relative to one another to move the tool assembly from an initial configuration to a deployed configuration in which the spikes are exposed beyond the sleeve(s). Methods of preparing a pedicle of the spine with the tool assembly with robotic assistance are also disclosed.

Various surgical tools having a movable handle mechanism including a positioning handle are disclosed. The movable handle mechanism may be configured to move forward and backward in a longitudinal direction along the housing and rotate clockwise and counterclockwise around the housing. In various embodiments, the housing may include a plurality of channels and each channel may have at least one detent. The movable handle mechanism may be configured to securely couple to the housing via one channel of the plurality of channels and one detent of the plurality of detents. At least one surgical tool may include a drill having an angled tip portion and a sleeve configured to protect adjacent structures from lateral edges of the drill bit when the drill bit is rotating. Another surgical tool may include a screwdriver having an elastic retaining clip configured to progressively release a bone screw therein at an extraction force.

Disclosed herein is a surgical tool for debulking hard tissue. The surgical tool includes: (i) an elongated hollow member including a distally located bent section; (ii) a cable extending within the hollow member, along a predetermined length thereof; (iii) a headpiece positioned at, or distally to, the bent section; (iv) a rotation actuator coupled to the cable proximal end and configured to rotate the cable about a longitudinal axis thereof; and (v) a motion converter coupled to a distal end of the cable and to the headpiece, at least part of the motion converter is positioned in, and/or distally, to the bent section, the motion converter being configured to transform rotational motion of the cable into an axial, reciprocating motion of the headpiece. The headpiece is configured to break up hard tissue by hammering thereof, when effecting axial, reciprocating motion, while simultaneously minimizing damage to soft tissue if struck.

A parallel spacer for parallel spacing of a plurality of guiding elements during surgery is provided. The parallel spacer includes a parallel spacer body defining a first guide aperture extending through the parallel spacer body, the first guide aperture being sized to receive a first guiding element in a first orientation with respect to the parallel spacer body and hold the guiding element at the first orientation. The body further defines a second guide aperture extending through the parallel spacer body, sized to receive an access needle. The parallel spacer further includes a first external positioning protrusion, with the first guide aperture extending through the first external positioning protrusion, and a second external positioning protrusion, with the second guide aperture extending therethrough. The second guide aperture is open from a proximal end of the parallel spacer body to a distal end of the second external positioning protrusion.

A front end attachment for a powered surgical tool. The front end attachment includes a nose. The nose defines a bore for receiving a shaft of a cutting accessory that is connectable to a motor of the powered surgical tool. The nose also defines a groove separate from the bore. The groove is formed in an outer surface of the nose and extends longitudinally along the nose. An irrigation fitting includes a tube that is seated in the groove of the nose. The irrigation fitting is adapted to receive an irrigating fluid. A heat shrink tubing is disposed over the outer surface of the nose to extend over and enclose the groove. The heat shrink tubing secures the irrigation fitting to the nose.