A digitally adjustable bone orthopedic external fixator with detachable motor

Abstract

The invention discloses a digital adjustable bone orthopedic external fixator with a detachable motor. The external fixator comprises a pair of combined type fixed rings, detachable link mechanisms and stepless adjustment threading clamps, wherein the combined type fixed rings are connected through six detachable link mechanisms, and the stepless adjustment threading clamps are fixed on the combined type fixed rings; and each detachable link mechanism comprises an electric push rod, a coupler, a bidirectional connecting piece, an upper fixed ring, a lower fixed ring, a finely adjusted type connecting piece, a spiral connecting rod, a universal joint, a hinge pin type connecting piece and a sleeve connecting piece. The sizes of the fixed rings can be adjusted by adjusting the positions of nuts and removing the connecting pieces, thereby improving the applicability and compatibility of the device. According to the design of providing detachable electric push rods, firstly, alternative connecting devices are connected to two ends of a linear push rod through bolts, the positions of two end points are kept unchanged, and then, the electric push rods are removed and replaced with alternative screw devices.

Description

technical field [0001] The invention relates to the field of orthopedic correction and rehabilitation, and more specifically, to a digitally adjustable bone orthopedic external fixator with a detachable motor. Background technique [0002] In the treatment of orthopedic surgery, fixation devices are indispensable. Traditional fixation methods generally use internal fixation with steel plates, and now there are also external fixation methods with less trauma. Commonly used external fixation devices are mainly Ilizarov external fixator and Taylor skeleton. The Ilizarov technique uses multiplanar thin Kirschner wires to penetrate the limb and bone tissue and connect to a ring fixator. Dr. Taylor improved the Ilizarov external fixation system by connecting six telescopic extension rods obliquely to the proximal and distal rings, and they can rotate freely at the connection point. As long as the length of one of the extension rods is adjusted, one ring will Change position rela...

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to solve the problem that in the existing field of orthopedic rehabilitation, a series of fixed rings must be selected according to the patient’s condition. The size of the fixed rings is difficult to adjust and the traditional clamps cannot perfectly match the position of the needle. When the steel needle is nailed into the patient's bone, it is easy to miss the steel needle and need to be nailed again, causing secondary or even multiple injuries, which makes the operation difficult, the threshold is high, and it brings great pain to the patient. , proposed a digitally adjustable bone orthopedic external fixator with a detachable motor. The size of the fixator can be adjusted by adjusting the position of the nut and removing the connector. The accuracy and safety of fracture reduction, and reduce the operating intensity of the clinician, greatly improving the success rate of the operation, and the length of the rod can be adjusted by driving the electric push rod, or the length can be adjusted by the screw, and the motor adjustment is completed It can also be easily disassembled after

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