External fixator assemblies, systems, and methods thereof. An external fixator system may include a plurality of fixator assemblies configured to connect a plurality of pins, for example, positioned on opposite sides of a fractured bone, with one more rods. The fixator assemblies may include a plurality of clamp assemblies that are configured to clamp onto the rods. A distractor/compression instrument is used to adjust the location of a clamp assembly along the length of its rod.

Devices and methods for treating bone fractures involving a micromotional unit (6) that produces reciprocating displacement between two fracture fragments (1) to thereby apply controllable micromotion to a fracture site.

An external load bearing distracting device, which can be positioned to fully unload a knee joint cartilage while providing the knee joint normal motion, for an articulating anatomical joint. The device includes a first and second rotatable threaded rods arranged longitudinally on opposite sides of a rotating joint, and first and second translational tubes slidably arranged around the first and second rotatable threaded rods, respectively. The rotating joint may comprise a ball-and-ring-joint configured for accommodating a two mutually complementary brake elements. The first and second rotatable threaded rods each include a first and second clamping nuts thereon, which contact a proximal end of the first and second translational tube to limit longitudinal translation thereof towards the rotating joint. The distracting device is intended for temporary implantation to treat osteoarthritis, focal cartilage defects, and fractures inside the knee joint.

Clamp (1) for an external fixator, preferably of the quick attachment type, comprising: a plurality of attachments (2; 3) for blocking bars and/or bone screws; a connector (5), provided with an at least partially threaded stem (50), which passes through and connects in series said plurality of attachments (2; 3); at least one first attachment (2) comprising two arms (20; 21), connected by a C-shaped flexible bridge (22); said stem (50) passing through said first attachment (2) in an intermediate position between said flexible bridge (22) and the opposite free ends of said arms (20; 21); wherein, at the free ends, said arms (20; 21) define a screw housing seat (23) for a bone screw, said screw housing seat being selectively configurable, varying the deformation of the flexible bridge (22), to clamp bone screws having different diameter.

A universal clamp apparatus for orthopedic exterior fixators is disclosed. Preferably, the universal clamp apparatus has two pin/rod clamps, each having seating grooves for attaching to a frame rod associated with a frame of the fixator and/or a bone pin for implantation in a bone fragment. A clamp screw extends through and connects the first and second pin/rod clamps. An ergonomically designed knob having at least one collapsible or non-collapsible turn lever acts as a torque amplifier when rotated by hand without tools to tighten and untighten the pin/rod clamps to the frame rod and/or bone pin by movement along the clamp screw. The pin/rod clamps have planar sides that are contiguous and have radial ratchet grooves that are in mating engagement and provide a ratcheting mechanism so that the rotation of the pin/rod clamps relative to each other occurs in incremental rotational steps.

The present invention relates to a medical positioning device. In one example, the device comprises comprising a first carriage assembly configured for mounting a first pin, wherein the orientation of the first pin is adjustable by a first spherical joint with three rotational degrees of freedom with an angular range of at least ±10° each, a second carriage assembly configured for mounting a second pin, wherein the orientation of the second pin is adjustable by a second spherical joint with three rotational degrees of freedom with an angular range of at least ±10° each and an extension assembly configured for adjusting a distance between the first pin and the second pin.

Various implementations include an external fixation device for posterior pelvic compression that allows a pin engaged into one iliac bone to be pivoted relative to the pin engaged into the other iliac bone, allowing compression of the iliac bones toward each other and the interposed sacrum and for the relative positions of the pins to be held fixed relative to each other after the compression is set. The pin to be pivoted is engaged into the iliac bone closest to the source of the injury. And, the pins and bars of the fixation device are anteriorly coupled together, which gives the patient greater transportability, as well as maintenance of reduction that will assist in the definitive surgical intervention.

An orthopedics restoration fixation device includes: a clamping mechanism and a shock absorbing mechanism. The clamping mechanism includes: a first base; a first clamping assembly and a second clamping assembly cooperating with each other and adjustably mounted on the first base; and an adjustment assembly mounted on the first base and configured to move the first clamping assembly and the second clamping assembly towards each other or away from each other. The shock absorbing mechanism is connected to the clamping mechanism and is configured to alleviate an external impact on the clamping mechanism.

The present invention relates to an external fixation system including at least one pair of connected clamp units forming at least one clamp. Each of the clamp units includes: a first component comprising a molded metal, the first component having a first exterior surface having a plurality of voids formed therein to define a plurality of interconnected ribs and a first periphery having at least one first pin groove formed therein; and a second component mated to the first component and including a second periphery having at least one second pin groove formed therein, the at least one first pin groove and at least one second pin groove together forming a fixation pin holder. A fixation pin is held in at least one of the fixation pin holders.

A clamping device of an external fixation system that has a jaw set with a passage at one end configured to hold an element from a first range of sizes and a second passage configured to hold an element from a different range of sizes. The jaw set includes a first jaw, a second jaw, and a slider interposed between the first and second jaws that moves to a first position when the first element is located in the first passage and to a second position when the second element is located in the second passage.