Disclosed are devices, systems and methods for modifying, cutting and/or shaping surgical fixation components of various configurations, including spinal fixation rods and related components.

Disclosed are devices, systems and methods for modifying, cutting and/or shaping surgical fixation components of various configurations, including spinal fixation rods and related components.

Plies have a first and a second plier limb which are rotatably held relative to one another on an axis of rotation an articulation region and form a jaw region on one side of the articulation region and handle sections on the other side of the articulation region. The jaw region has a cutting pattern with first and second cutting edges which, in the closed position of the pliers, are crossed with respect to a shear plane and which have a central plane running through the axis of rotation, perpendicularly to the shear plane in the closed position. The cutting edges are crossed to a greater degree in a region remote from the articulation, in the opening direction of the pliers, than in a region closer to the articulation.

A crimping hand tool configured to crimp a cable and a housing. The crimping hand tool includes a first body having at least one guiding structure, a second body is pivoted to the first body to rotate with respect to each other to be unfolded and folded, a linking member is pivoted to the second body, and the linking member has a slot, a crimping assembly is pivoted to the linking member and is slidably coupled to the guiding structure, and a shaft is movably inserted in the first body and the slot of the linking member. After the housing and cores are placed into the first body, the second and first body are folded with respect to each other to drive the crimping assembly to move along the guiding structure through the linking member to crimp the housing and the cable together.

A hand tool with a mechanical linear drive mechanism coupled to a work implement. The drive mechanism includes a roller screw with a torque tube connected to a roller screw's nut body. The roller screw includes a fixed outer race, a rotating set of rollers axially aligned inside the outer race, a cylindrical nut body located inside the set of rollers, a plurality of inner rollers axially aligned and inside the nut body, a threaded shaft axially aligned and inside the inner rollers, and a torque tube axially aligned inside the inner rollers. The torque tube is connected to a multiple speed gearbox which includes a primary motor coupled to a carrier gear with three planet gears. Disposed around the planet gears is an outer ring gear. Coupled to the outer ring gear is a secondary motor which when activated causes the ring gear to rotate in the opposite direction of the planet gears.

A hand tool with a mechanical linear drive mechanism coupled to a work implement. The drive mechanism includes a roller screw with a torque tube connected to a roller screw's nut body. The roller screw includes a fixed outer race, a rotating set of rollers axially aligned inside the outer race, a cylindrical nut body located inside the set of rollers, a plurality of inner rollers axially aligned and inside the nut body, a threaded shaft axially aligned and inside the inner rollers, and a torque tube axially aligned inside the inner rollers. The torque tube is connected to a multiple speed gearbox which includes a primary motor coupled to a carrier gear with three planet gears. Disposed around the planet gears is an outer ring gear. Coupled to the outer ring gear is a secondary motor which when activated causes the ring gear to rotate in the opposite direction of the planet gears.

A light-weight bolt cutter tool includes a pair of opposing pivotally mounted jaws, each made from a fiber-reinforced composite body jacketed by a blade having a hardened metal outer surface oriented to forcibly engage the other one of said jaws. The bolt cutter tool can be actuated by a pair of elongated, hollow fiber resin composite handles. Each handle can include an elastomeric damping plug to prevent debris entering the hollow handle and reduce material fatigue. A quick-deployment, quiver-style backpack can conveniently carry the colt cutters when not in use.

A light-weight bolt cutter tool includes a pair of opposing pivotally mounted jaws, each made from a fiber-reinforced composite body jacketed by a blade having a hardened metal outer surface oriented to forcibly engage the other one of said jaws. The bolt cutter tool can be actuated by a pair of elongated, hollow fiber resin composite handles. Each handle can include an elastomeric damping plug to prevent debris entering the hollow handle and reduce material fatigue. A quick-deployment, quiver-style backpack can conveniently carry the colt cutters when not in use.

A shear cutting tool includes a housing, a hydraulic drive assembly at least partially supported in the housing, and a head assembly coupled to the housing. The housing has a first end, second end, base portion, and a handle extends from the housing. The handle supports a trigger. The hydraulic drive assembly is activated by the trigger and is configured to move a movable die relative to a stationary die. The head assembly is coupled to the second end of the housing and includes a clevis that supports the movable and stationary dies, a plurality of extensions, and a stop plate with a lower face. The extensions are coupled to the clevis and the stop plate is coupled to the extensions. The clevis has a support portion that, together with the lower face and the base portion, define a support plane.

A shear cutting tool includes a housing, a hydraulic drive assembly at least partially supported in the housing, and a head assembly coupled to the housing. The housing has a first end, second end, base portion, and a handle extends from the housing. The handle supports a trigger. The hydraulic drive assembly is activated by the trigger and is configured to move a movable die relative to a stationary die. The head assembly is coupled to the second end of the housing and includes a clevis that supports the movable and stationary dies, a plurality of extensions, and a stop plate with a lower face. The extensions are coupled to the clevis and the stop plate is coupled to the extensions. The clevis has a support portion that, together with the lower face and the base portion, define a support plane.