150 results about "Femur intramedullary nailing" patented technology

A femoral intramedullary rod system capable of treating a variety of femoral bone fractures using a uniform intramedullary rod design. The system generally comprising an intramedullary rod defining an opening having an upper surface and a transverse member including a bone engaging portion and a connection portion defining a thru-hole with the nail sized to pass therethrough. A pin is selectively coupled to the transverse member to rigidly assemble the transverse member to the nail when the nail is passed through the thru-hole and the pin is received within the opening. In an alternative design, an epiphyseal stabilizer is joined to the nail by a locking member.

An bone screw with comprising a sleeve, a shaft reciprocally received within the sleeve, and a compressive device is disclosed. The bone screw may be extended, placing a fracture in tension, after insertion into a bone and then retained in place by a setscrew that is retained by an intramedullary rod. The shaft of the bone screw may have a blade thread that allows the bone screw to be installed into a bone by tapping the bone screw with a hammer.

An intramedullary nail has a proximal part for engagement with a proximal bone fragment and a distal part for engagement with a distal bone fragment. A motion assembly interconnects the parts and allows limited axial relative motion of the proximal and distal parts. This limited axial motion provides micromotion and in some embodiments also dynamization. The nail may comprise a stem for fastening to one bone fragment and an insert within the stem for fastening to the other bone fragment, the insert being adapted to guide insertion of a bone screw through the stem and to prevent relative rotation of the distal and proximal bone fragments. The motion assembly may include spring bias and / or damping means between the parts, possibly including one or more Belleville washers.

A system and method for securing an intramedullary rod in a medullary canal of a long bone is provided. The system includes an intramedullary rod and a screw assembly for receiving the rod. The screw assembly has a transverse receiving bore for receiving the intramedullary rod and a securing member movable toward the bore for securing the rod to the screw assembly. An alignment jig may also be provided for aligning the rod with the receiving bore during installation.

The invention relates to a device for providing skeletal support. A bone support device comprising an upright rod having a proximal and a distal end; at least one support member located near the proximal end for securing the rod to the bone; at least one distal anchoring element; and a vent member is provided.

A locking intramedullary alignment jig for use in bone resection, especially for the proximal tibial has an axially extending intramedullary rod for insertion into the medullary canal of the tibia. A slidable anchoring block is mounted on the rod for movement along the rod in the axial direction, which on the tibia is the proximal-distal direction. The anchoring block has a pivot point at one end thereof and a tooth portion at a second end thereof. A first rotating body is pivotally coupled to the pivot point on the anchoring block for rotation about a first axis. The rotating body includes a toothed locking member for releasable locking engagement with the toothed portion the anchoring block. A second rotating body, including a bone resection guide is connected to the first rotating body. Movement of the first and second rotating bodies allow rotation of the resection guide in both the flexion-extension and varus-valgus directions.

Silver and / or zinc ion releasing implants, systems and method of operating, inserting and activating / inactivating them are described. In some variations the implant is configured as a bone implant that includes a bone-screw or intramedullary rod like body configured to receive a treatment cartridge having a plurality of ion-releasing members configured as an anode that can controllably engage with a catheter to turn galvanic release of ions on / off as desired. These devices may be configured to release silver ions (and / or zinc ions) above a predetermined level for a predetermined period of time and may maintain a concentration of ions over a relatively large volume of tissue. The ion-releasing members may be configured to reduce or prevent implant movement.