A self-locking spindle traction mechanism for use in surgical procedures has a longitudinal axis (L). The mechanism may include an operating end, a connecting end for connecting a surgical accessory, and a threaded spindle drive. The spindle drive may include a spindle having an external thread, and a spindle nut that is seated on the spindle and has an internal thread. The mechanism may include a slide that is movable along the longitudinal axis by a relative rotation between the spindle and the spindle nut, a drive device that is situated on the operating end for rotationally driving the threaded spindle drive, and a gear. The gear may be connected between the drive device and the threaded spindle drive, so that the gear is configured for stepping up the speed of a rotational movement of the drive device and delivering it to the threaded spindle drive.

The present application discloses a needle clamping device and a leg support device. The needle clamping device includes a first component having a shaft portion; a second component hinged with the shaft portion, the second component includes a first portion and a second portion whose relative position is variable, the first portion and the second portion are arranged to clamp the shaft portion when the relative position changes; a clamping mechanism for clamping the needle, the clamping mechanism is connected to the second component, and the clamping mechanism is arranged so that at least part of the structure further clamps the first portion and the second portion, and drives the first portion and the second portion to change their relative position so that the second component clamps the shaft portion in the process of clamping the orthopaedic needle.

Systems and methods include stabilizing a leg and providing femoral distraction during a knee arthroplasty surgery. The disclosed systems include a leg holder to receive a foot of a patient and a femoral distractor received in the leg holder and disposed underneath a knee of the patient. The femoral distractor is actuated to increase or decrease in length to distract the femur such that a surgeon may cut to resection the femur without also simultaneously providing distraction of the femur.

A traction tensioning apparatus includes a housing that has a first end and a second end. An anchor point is mounted to the housing and is attachable to a first tether that is in-line with a traction system and extending away from the housing in a first direction. An urging assembly is engaged with the anchor point. The urging assembly is tension actuated to urge the anchor point toward the second end and releasably actuated to allow the anchor point to move toward the first end. An attachment point is mounted to the housing and is attachable to a second tether in-line with the traction system and extending away from the housing in a second direction. The attachment point is movable in the first and second directions relative to the housing. A biasing member is engaged with the attachment point and biases the attachment point in the first direction.

A fracture reduction mechanism for minimally invasive pelvic fracture surgery, comprising a support assembly, a drive assembly, a self-rotating clamping assembly, and a healthy side fixation assembly, wherein the drive assembly comprises a synchronous rotation module (21), a first ball screw module (22), a second ball screw module (23), a third ball screw module (24), and an arc guide rail module (33); the mechanism forms a frame-like closed structure through connection with an operating table (1) via bedside rails (2) on both sides of the operating table (1), the support assembly and healthy side fixation assembly are slidably connected with the bedside rails (2). By manually adjusting the linear movement distances and fixed-axis rotation angles of the above mechanism, six degrees of freedom translation and rotation of the pelvic fracture block can be achieved. The mechanism features high rigidity and load-bearing capacity, good portability, simple assembly and operation, high motion precision, and its motion center is a virtual point in space, the position of which can be adjusted according to patient position and fracture type, providing convenience for surgery.

The present application provides external bone fixation systems. The systems include one or more pairs of bone fixation platforms in the form of rings or partial rings. The platforms may be coupled to corresponding bone segments. The pair of platforms are configured to accept a plurality of struts extending therebetween. The struts are configured to attach to the platforms via joints that provide three degrees of rotation. The struts are also configured such that their longitudinal length extending between the joints/platforms can be incrementally adjusted while attached to the platforms. The struts are further configured such that their total range of length adjustment can be increased by coupling at least one add-on component to the struts in situ. The lengths of each of the plurality of struts may be adjusted to arrange the platforms, and thereby the bone segment coupled thereto, in particular relative positions and orientations.

An elastic traction system, including a driving mechanism to provide traction power, a connecting rod connected to an output shaft of the driving mechanism and rotating along with the output shaft, a traction wheel arranged at an end of the connecting rod for rotating along with the connecting rod, a traction wire connected to the traction wheel, and an elastic traction bow connected to the traction wire. An elastic body is arranged at a front end of the traction wire to be connected to various traction tools, the other end of the traction wire is wound around the traction wheel, and the traction wheel is driven by the traction system to rotate, so as to complete a traction operation. The elastic traction bow implements elastic traction of a fracture reduction surgery, provides an elastic activity space for a surgical operation, and greatly facilitates carrying out various reduction operations during traction.

A reduction device correction system for spinal surgery comprising two uniplanar clamps; a reduction rod having opposite pitch threaded ends, the reduction rod configured to be attached to each of the two uniplanar clamps; a stabilizing rod configured to be attached to each of the two uniplanar clamps; two provisional spine rods, each configured to be attached to a respective uniplanar clamp; and an adjustable force compression device comprising a constant force cable, the constant force cable configured to be attached to each of the two uniplanar clamps.

A system including a tensioning element and a fixation element, the tensioning element including a connection element configured to be coupled to a fixation element and an anchoring element configured to be coupled to an external fixation point, the tensioning element being operable to apply a tension between the connection element and the anchoring element, the fixation element including a first portion configured to be coupled to the tensioning element and a second portion configured to be coupled to a bone, the tensioning element and the fixation element being configured to cooperate to apply a tension between the bone and an external fixation point when the anchoring element of the tensioning element is coupled to the external fixation point, the second portion of the fixation element is coupled to the bone, and the tensioning element is operated to apply the tension, thereby retaining the bone in a fixed position.