A hand tool includes a handle, a press member, a shank body and multiple latch assemblies. The handle is formed with a receiving cavity and a locating hole in communication with the receiving cavity. The press member is movably disposed in the locating hole. The shank body is fitted in the receiving cavity and movable relative to the handle. The shank body is formed with multiple sockets. The latch assemblies are respectively mounted in the sockets. When the shank body is moved, (for example, slid or rotated) relative to the handle to make one of the sockets aligned with the locating hole, the latch assembly latches the shank body with the handle. When pressing the press member, the latch assembly unlatches the shank body from the handle, the shank body is movable relative to the handle.

A torque limiting driver system, including: a torque limiting driver including: a handle with a locking cap engagement protrusion; a shaft with a cam portion including a cam mating feature; and a locking cap including: a mating recess including a plurality of scallops along the outer edge of the mating recess and wherein the plurality of scallops are configured to interface with the first mating feature; a through-hole with through-hole mating feature configured to interface with the cam mating feature, wherein the locking cap is configured to engage the torque limiting driver to lock the rotation of the shaft with respect to the handle.

A ratchet screwdriver may include a handle, a shaft and a ratchet switch device. The handle has a passage axially penetrating through a front end thereof, and a mounting member is mounted on an outer periphery of the front end of the handle. Furthermore, a housing slot formed inside a rear portion of the handle is configured to receive the ratchet switch device. The ratchet switch device comprises a base, a switch button, a driving piece, a positioning member, two engaging blocks, two springs, a ratchet and a locating piece, thereby allowing the shaft to independently rotate relative to the handle in a reversed-working direction. Thus, a user has no need to repeatedly detach the ratchet screwdriver from a screw or re-hold the handle when operating, which is more convenient and labor-saving.

In one aspect, a surgical driver is provided that includes a driver shaft, a handle rotatably connected to the driver shaft, and a resilient, elongate pin extending transverse to the driver shaft. The pin is operably engaged with the driver shaft and the handle so that torque applied to the handle causes turning of the driver shaft. The pin is configured to deflect to limit the torque applied to the driver shaft.

A fabrication method of a holding sleeve is provided. The holding sleeve is adapted to dispose around a body portion of a main body and can rotate relative to the body portion. A blocking member is disposed in at least one through hole of a first sleeve. A second sleeve is movable relative to and disposed around the first sleeve. The blocking member is controllably pressed by the second sleeve to be partially received in an annular groove of the body portion. An elastic member is disposed around and between the first sleeve the first and second sleeves. Before the second sleeve is mounted to the first sleeve, a part of the elastic member corresponds to the blocking member in a radial direction of the first sleeve and can limit the blocking member to locate in the through hole.

The disclosure includes a connection method to fluidly connect a fluid pathway in a handle is formed co-linearly or axially and connects to a lumen through a tool and shaft. The body and movable latch may be an integral single molded plastic part connected by a flexible. In operation actuating the movable latch to raise or lower a latching beak within a corresponding open guide in the plastic body. The shaft fits into a shaft guide in the body which intersects the beak guide to temporarily latch the shaft to the body via a mounting fixture the shaft with the beak; and, wherein the body has a face end and a tail end.

A screwdriver comprises a handle including a butt and a shank extending from the handle and including a tip. The butt includes a first indicating element having a shape corresponding to the tip and a plurality of second indicating elements arranged around the first indicating element. Each of the second indicating elements has the shape.

A method and device for inserting screws into a patient, such that when the device is removed the device does not stick to the screw. The device, being a push-off driver, may have a handle, an inner driver, and a threaded driver sleeve having a button mechanism and a plurality of spheres, and an inner sleeve. The method includes the steps of assembling a push-off driver attaching a bone screw to the push-off driver inserting the bone screw and detaching the bone screw from the driver by unthreading the threaded driver sleeve from the polyaxial screw which causes the spheres in the recess of the inner driver to back up against the start of the recess and causing the threaded driver sleeve to push-off the polyaxial screw from the inner driver.

Screwdrivers with transformable drive tips (and associated systems, devices, and methods) are disclosed herein. In one embodiment, a screwdriver includes a shaft assembly having a proximal end region and a distal end region opposite the proximal end region. The screwdriver further includes a handle at the proximal end region of the shaft assembly, and a drive tip at the distal end region of the shaft assembly. The drive tip is transformable between (i) a first configuration corresponding to a first drive tip type and (ii) a second configuration corresponding to a second drive tip type different from the first drive tip type. The screwdriver further includes a rotation mechanism configured to transition the drive tip between the first configuration and the second configuration. In some embodiments, the first drive tip type corresponds to a Phillips drive tip and/or the second drive tip type corresponds to a flathead drive tip.

A driver include: an axis, a shank with a handle engagement portion, and a handle configured to releasably and continuously adjustably fix the shank in position. The handle includes a sleeve with two slots axially oriented, first and second handle portions, a torsion spring between the handle portions, and two retaining balls riding in the two slots and disposed in the first handle portion and biased apart. With the first handle portion in a rotationally neutral position, the retaining balls are pressed against the shank, fixing the shank in position. Rotating the first handle portion with respect to the second handle portion releases the retaining balls and allows the shank to be adjusted in the handle.