Foot-operated pedicle internal fixation rod bending rod device

Abstract

The invention relates to a pedal-type pedicle internal fixation bar bending device and a working method thereof, and belongs to the field of medical apparatuses. The pedal-type pedicle internal fixation bar bending device comprises a base, wherein a pedal is hinged at the outer side of the upper surface of the base; the end of the pedal is hinged at the lower end of a connecting rod; a spring is arranged between the pedal and the base; a supporting pillar is vertically fixed to the base; a mounting plate is fixed to the supporting pillar; a dynamic plate is hinged on the upper surface of the mounting plate; the hinged end of the dynamic plate is represented as a semi-arc structure; and the hinged end of the semi-arc dynamic plate takes a hinged point as a circle center, and the diameter ofthe hinged end is consistent with the width of the dynamic plate. The angle of a bent bar can be precisely and strictly controlled, and the angle of the bent bar is adjustable; therefore, the bent bar is strong in adaptability, and operating efficiency can be greatly improved.

Description

technical field [0001] The invention relates to a foot-operated pedicle internal fixation rod bending device, which belongs to the field of medical instruments. Background technique [0002] At present, the clinical treatment of scoliosis correction, spinal fracture, dislocation and other diseases mostly adopts the pedicle screw fixation system (USS internal fixation system) - the internal fixation pedicle screw of the spine is fixed on the connected metal rod for reduction, fixed. Because the physiological curvature of the spine is different in each vertebral body stage, the bending angle of the metal rod connected to the pedicle screw in the internal fixation USS system is different. The rod bending device in the prior art cannot strictly control the angle of the rod, either the angle is not enough to achieve the purpose of orthopedics, or the angle of the rod is too large and needs to be bent back. This prolongs the operation time, and is also a kind of damage to the me...

AI Technical Summary

Problems solved by technology

The rod bending device in the prior art cannot strictly control the angle of the rod, either the angle is not enough to achieve the purpose of orthopedics, or the angle of the rod is too large and needs to be bent back

This prolongs the operation time and is also a kind of damage to the metal rod connected to the pedicle in the USS internal fixation system.

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