Intramedullary nail

Abstract

The invention discloses an intramedullary nail which is an intramedullary support used for treating and fixing long tubal bone fracture. The intramedullary nail comprises a nail rod, wherein two ends of the nail rod are provided with transverse positioning holes, one end of the nail rod is provided with an axial tail cap bolt hole matched with a tail cap, and in the length direction, the nail rod is provided with elongated slots which are radially symmetrical; the elongated slots of the nail rod are internally provided with stripy holes penetrating through the nail rod in the radial direction; the stripy holes are uniformly arranged at intervals along the length direction of the nail rod; the side walls of the stripy holes are provided with threads matched with transverse nails for locking fractured bone blocks; the stripy holes are distributed in at least two rows on the circumference; the width of the elongated slot is 0.6-1 times the radius of the nail rod, and the depth of the elongated slot is 0.4-0.6 times the radius of the nail rod. The intramedullary nail disclosed by the invention adopts a titanium alloy material, the cross section of the nail rod is of a dual H shape, so that a reinforcement effect is achieved, not only can favorable support and fixation effects be achieved, the transverse micromotion, excess stretching and revolution of a bone fracture end can be prevented, but also any fractured bone block of comminuted fracture can be fixed.

Description

technical field [0001] The invention relates to a fixed bracket used in orthopedics, in particular to an intramedullary bracket used for treating and fixing fractures of long tubular bones. Background technique [0002] Fracture refers to a disease in which bone is partially or completely broken due to trauma or pathology. The treatment of fractures follows the three basic principles of reduction, fixation, and functional exercise. Reduction is to restore the displaced fracture end to normal or close to the original normal position after the fracture, so as to restore the support function of the bone. After fracture reduction, if there is no firm fixation, redisplacement is easy to occur, so corresponding fixation should be given after fracture reduction to promote fracture healing. [0003] The commonly used fixation methods for fractures are divided into external fixation and internal fixation. With the continuous improvement of internal fixation materials and surgical ...

AI Technical Summary

Problems solved by technology

However, in clinical practice, there are many kinds of bone fractures. For example, in a comminuted fracture, the bone sometimes breaks into many fragments, and the size and position of the fragments have many uncertainties.

The above-mentioned prior art cannot fix many fragmented bone fragments, and these fragmentary fragments of bone just cannot coincide completely with other bones. source of fracture

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