The present disclosure provides for spinal implants deployable between a contracted position and an expanded position. The spinal implant may include a first endplate and a second endplate, each having a plurality of guide walls and inclined ramps. The spinal implant may further include a moving mechanism having first and second trolleys configured to act against the first and second plurality of ramps. The expansion mechanism may further include a first set screw and a second set screw opposite the first set screw. The moving mechanism may be configured to operably adjust a spacing between the first and second endplates upon simultaneous rotation of the first and second set screws along a rotation axis, and may also operably adjust an angle of inclination between the first and second endplates upon rotating the first set screw or second set screw along the rotation axis.

The tool connector includes a socket having a receiving space and a through hole communicating the receiving space, a sliding member slidably received in the receiving space, a positioning member received in the receiving space, and a hook member. A funnel-shaped opening is formed at an end of the receiving space. The sliding member is connected to the socket with an end via a first elastic member, and the other end is for a tool bit to abut against. The positioning member is selectively inserted into the through hole. An end of the hook member is connected to the sliding member, and the other end has a hook portion for grasp the tool bit. When the positioning member is moved inward and the sliding member is moved toward the funnel-shaped opening, the hook portion is swingable in the funnel-shaped opening to release the tool bit.

A tool for sizing a workspace includes a first link with a link body and a tool element. The tool includes a second link connected to the first link, where the second link is capable of rotation or translation with respect to the first link, and where the first link and the second link are selectively securable relative to each other. The tool includes a third link connected to the second link, where the third link is capable of rotation or translation with respect to the second link, and where the second link and the third link are selectively securable relative to each other.

A socket extender with a bit locking mechanism is described herein. The socket extender includes a proximal end, a shaft, and a distal end; the shaft extends from the proximal end to the distal end. The proximal end includes a proximal side wall that defines a female square shaped drive socket. The distal end includes a distal sidewall that defines a female hexagon shaped head. The distal end further includes a set screw, where the set screw passes through an opening in the distal sidewall. A point of the set screw is engageable with a bit inserted into the female hexagon shaped head such that the bit is retained in the female hexagon shaped head. Further, at least a portion of the socket extender can be magnetized for bit retention. Moreover, a drive square (of a driving tool) is receivable in the female square shaped drive socket.

A rotary impact tool including a motor having a motor shaft that produces a rotational output to drive a gear assembly and a drive assembly driven by the gear assembly. The drive assembly including a hammer coupled to the motor shaft and an anvil configured to receive an impact from the hammer. The rotary impact tool includes a torque stick coupled to the anvil and configured to limit the amount of deliverable torque to a workpiece in accordance with a torsional stiffness of the torque stick, a position sensor to detect angular displacement of the anvil, and a controller in electrical communication with the position sensor. The controller calculates torque delivered to the workpiece from the impact by multiplying the torsional stiffness of the torque stick and the signal from the position sensor, and control the motor based on the torque delivered to the workpiece.

An extensive shaft assembly includes a casing, an extensive shaft, a sensor, a warning apparatus, and a connecting apparatus. The extensive shaft extends throughout the casing. The sensor is connected to the extensive shaft. The warning apparatus includes an LED module and a light-guiding ring. The light-guiding ring includes a slit. The LED module is electrically connected to the sensor and located in the slit of the LED module. The connecting apparatus connects the light-guiding ring to the casing so that an external annular portion of the light-guiding ring is visible through a gap between the casing and the connecting apparatus.

A tool drive assembly including a flexible drive shaft and a guide. The flexible drive shaft includes a proximal end structured to engage a driver for rotating the flexible drive shaft, and a distal end opposite the proximal end. The guide includes a handle, a shaft extending from the handle, and a hub assembly at a distal end of the shaft. The hub assembly includes a housing, and a hub rotatably mounted within the housing. The hub includes an input connection structured to attach to the distal end of the flexible drive shaft, and an output connection structured to attach to a working tool. The tool drive assembly enables easy manipulation and driving of a working tool to achieve optimum positioning and effectiveness of the working tool.

A torque-sensing and transmitting device is provided. The device includes a transmission body, two vibration-damping members, two inner casings, two outer casings, a first circuit board module, and a battery module. The two inner casings are disposed on a shaft of the transmission body, and a vibration-damping member is disposed between the inner casing and the shaft. The first circuit board module is disposed in one of the two inner casings, and the first circuit board module is covered by a vibration-damping layer. The battery module is disposed on the other inner casing, and the battery module is covered by a vibration-damping layer. With the configuration of the vibration-damping member and the vibration-damping layer, this device solves the problem of the first circuit board module and the battery module being damaged due to vibration.

A fixation structure of a sleeve tool is provided and includes a universal joint and a universal socket. The universal joint has a surface and a universal joint hole thereunder. The universal joint hole holds therein a spring and a ball. The universal joint has a radial length including a distance by which the ball protrudes from the surface. The universal socket has a connection hole for receiving and engaging with the universal joint and has an inner side. A recess is disposed under the inner side of the universal socket. The connection hole has a hole diameter. The ratio of the radial length to the hole diameter is greater than 0.902 to prevent the ball from retracting completely into the recess even when a user pulls the universal joint 20 by hand, thereby preventing the universal joint from escaping from the connection hole of the universal socket.

A length adjustable connection structure contains: an adjustment assembly, an engagement assembly, and a receiving tube. The receiving tube includes an insertion accommodated, a coupling portion, a groove, a trench, and an elongated slot. The engagement assembly includes a fixing portion, a toothed portion, a fitting portion, a hexagonal hole, and a circular hole. The adjustment assembly includes a connector, a locating orifice, a hexagonal column, and a C-retainer. The hexagonal column of the adjustment assembly is received in the hexagonal hole of the engagement assembly so that the engagement assembly is connected on the hexagonal column, the C-retainer is engaged in the notch of the hexagonal column, and the adjustment assembly and the engagement assembly are accommodated in the receiving tube, hence the toothed portion of the fixing portion is engaged in the groove of the coupling portion, and the fitting portion is fixed in the trench.