Three-dimensional adjustable nail locking guider for long intramedullary nail

Abstract

The invention discloses a three-dimensional adjustable nail locking guider for a long intramedullary nail. Three-dimensional deformation of a far end of the long intramedullary nail is decomposed intodeformation in two planes perpendicular to each other to be solved step by step. The deformation of the intramedullary nail is the displacement of a far-end nail locking hole; the displacement of thenail locking hole in one plane realizes re-accurate aiming of a guide hole and the nail locking hole through hinged rotation of a fixed guide arm and an adjusting guide arm, and accurate aiming in the plane is realized by adjusting the distance and the direction between the guide hole and the corresponding nail locking hole in the other plane; when the two planes correspond to each other, all theguide holes can be accurately aimed; according to the three-dimensional adjustable nail locking guider for the long intramedullary nail, accurate nail locking can be achieved, the problem that nail locking of the intramedullary nail is difficult is solved, the operation time can be shortened, radiation of X-rays to a patient and a doctor is reduced, bleeding is reduced, the infection proportion is reduced, and rehabilitation of the patient is facilitated.

Description

technical field [0001] The invention specifically relates to a three-dimensionally adjustable locking nail guide for long intramedullary nails, belonging to the technical field of orthopedic trauma medical devices. Background technique [0002] The intramedullary nail is an orthopedic internal fixation device in the medical equipment. It is the first choice for internal fixation of long bone diaphysis fractures, and has unique advantages compared with steel plates. In use, in order to prevent the two parts of the fracture from rotating, it is necessary to use several screws to pass through the bone and the intramedullary nail for locking. The doctor will combine a drill guide with the intramedullary nail before the intramedullary nail is inserted into the bone marrow cavity. At the same time, theoretically, the guide hole of the guide is facing the locking screw hole of the intramedullary nail, so that the drill bit can be drilled into the locking screw hole through the gui...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a three-dimensional adjustable locking nail guide for long intramedullary nails, which can achieve precise locking of the nails, solve the difficult problem of intramedullary nail locking, and shorten the operation time and reduce the The radiation of X-rays to patients and doctors can reduce bleeding, reduce the proportion of infection, and help patients recover

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