Light-transmitting intramedullary nail distal bolt sighting device

Abstract

The invention relates to the field of medical apparatuses for orthopedic traumas, in particular to fracture intramedullary fixing, and a light-transmitting intramedullary nail distal bolt sighting device. The light-transmitting intramedullary nail distal bolt sighting device comprises a handle, a near-end connecting guide rod, a far-end adjusting mechanism and a far-end sighting shelf; one end ofthe handle is fixedly connected with an intramedullary nail through bolts, and the handle and the near-end connecting guide rod are located through two pin holes and a dowel, and are then in threadedconnection through a second connecting bolt; the far-end adjusting mechanism is assembled by a connecting guide rod and a far-end connecting guide rod, and a standard locating device and a guiding device are arranged at one end of the connecting guide rod; a locating hole of the far-end sighting shelf is formed in one end of the far-end connecting guide rod, a metal insert is fixedly inserted to the other end of the far-end connecting guide rod, and the far-end connecting guide rod and the connecting guide rod are combined and assembled through a dowel and a fixing bolt so that the far-end connecting guide rod and the connecting guide rod can rotate around the dowel. A transmission gear of which the modulus is matched with that of the screw is arranged at one end of the metal insert. The far-end sighting shelf and the far-end connecting guide rod are located through two pin holes and a dowel, and are then fixed through a first connecting bolt.

Description

technical field [0001] The invention relates to a medical instrument in the field of orthopedic trauma, in particular to a fracture intramedullary fixation device, in particular to a light-transmitting intramedullary nail distal locking nail aimer. Background technique [0002] At present, in the treatment of tubular bone fractures such as the femur and tibia, intramedullary nailing is often used. Under normal circumstances, when implanting a long intramedullary nail, due to the difference in the physiological curvature of the human medullary cavity and the existence of the isthmus of the medullary cavity, the intramedullary nail will be deformed unexpectedly inside the patient's medullary cavity, which will cause A distal pin aiming problem. When locking the distal locking nail, it is necessary to use a corresponding distal aiming device, which requires very high aiming accuracy. [0003] Currently commonly used aiming techniques include the following: mechanical position...

AI Technical Summary

Problems solved by technology

The mechanical positioning and pressing bar technology is a common general technology in China at present, but the success rate of this aiming method is very low, and the problem of aiming failure often occurs; the magnetic navigation positioning and aiming technology, although its positioning is relatively accurate, but it is difficult to operate during the operation....

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