External fixation rack elasticity device

Abstract

The invention discloses a resilient device of an external fixator in the clinical application of orthopaedics. The resilient device consists of a cylinder, a sliding axle in the cylinder, a flexible apparatus, a sliding nail body and a sliding axle stopper. An anti-spin rivet, a pressure regulation rivet, a pressure regulation nut, a tightening jack bolt, a hollow screw on the cylinder wall and a pressurization hole are arranged in the radial direction on the cylinder wall, wherein, the sliding axle stopper can be provided with a stop jack bolt in the radial direction on the cylinder wall, or a stop nut or a stop fixture block can be arranged on the sliding axle; the cylinder wall can be designed to have equal inner diameters at the upper and lower parts or have the inner diameter of the upper part at the corresponding position of the sliding axle larger than that of the lower part; the flexible device can be made into a flexible capsule or a spring; and the sliding nail body is connected with the cylinder in a sliding manner. The resilient device can match with external fixators of different shapes and structures to form external flexible fixators. When a limb with a fracture suffers axial pressure, the external flexible fixator can have a slight axial movement so that an interaction force can be generated due to the slight movement at the end of fracture so as to stimulate callus to grow at the end of fracture. The resilient device can avoid osteoporosis due to stress shielding of the external fixator, quicken the fracture healing, increase the strength of healed bone and effectively prevent delayed fracture healing or nonunion.

Description

Technical field [0001] The invention relates to an elastic device for an external fixator used clinically in orthopedics. Background technique [0002] Orthopedic treatment of fractures sometimes requires the use of external fixators. Although the various existing external fixators have different shapes and structures, none of them can be adjusted by micro-motion. Refracture is prone to occur after the fixation frame is excluded. Since the fracture end cannot move slightly and there is no pressure stimulation, the formation of callus is slow, the amount of callus is small, and the fracture healing speed is slow. The existing external fixator elastic device cannot control the rotation of the sliding shaft in the horizontal direction, so the fracture end can rotate in the horizontal direction, which is not easy to heal the fracture. Contents of the invention [0003] The purpose of the present invention is to make up for the defects of the current use of external fixators ...

AI Technical Summary

Problems solved by technology

[0002] Orthopedic treatment of fractures sometimes requires the use of external fixators. Although the various shapes and structures of the existing external fixators are different, they cannot be adjusted in micro-motion. Prone to refracture after removal of the fixator

Since the fracture end cannot move slightly and there is no pressure stimulation, the formation of callus is slow, the amount of formation is small, and the fracture healing speed is slow

The existing external fixator elastic device cannot control the rotation of the sliding shaft in the horizontal direction, so the fracture end can rotate in the horizontal direction, which is not easy to heal the fracture

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