Phalanx Miniature External Fixator

Abstract

The invention relates to a phalange micro external fixing device. The device comprises a front needle part used for fixing the remote end of a fracture position, a rear needle part used for fixing thenear end of the fracture position, the front needle position and the rear needle position oppositely move in the long axial direction of a fractured phalange together and are driven and positioned bya traction device, a fracture rotary correction device is further included, a rotary correction guiding seat of the fracture rotary correction device is arranged on the front needle part, at least acorrection control assembly is arranged on the rotary correction guiding seat, the correction control assembly comprises a rotary control arm and a bone nail which is installed on the rotary control arm, the rotary correction guiding seat is provided with an arc-shaped guiding groove extending in the circumferential direction of the phalange, the rotary control arm extends in the length directionof the phalange, the rotary control arm can rotate around the axis of the rotary control arm and is arranged on the rotary correction guiding seat in a manner of sliding along the arc-shaped guiding groove, the rotary control arm is locked and unlocked by a position locking structure to be assembled on the rotary correction guiding seat. According to the device, the correction of fracture rotary abnormality has the advantages of high reliability and high operability, fracture reduction is helped, and the purpose of early functional exercise is achieved.

Description

technical field [0001] The invention relates to the technical field of surgical medical instruments, in particular to a phalanx miniature external fixator for fracture reduction treatment or deformed phalanx correction. Background technique [0002] The external fixator has a simple structure, is convenient for loading and unloading operations, and is easy to dismantle for the second time after the fracture heals. The biggest advantage is that it can realize early functional exercise after the fracture end is fixed, prevent joint stiffness, and reduce the disability rate. Traditional miniature external fixators for phalanges are mostly imported, and have defects such as high price and complicated operation. [0003] In order to solve the above-mentioned technical problems, the inventor has designed a miniature external fixator for phalanx. This technology is disclosed in the Chinese invention patent (patent number is CN201610045668.7, and the title of the invention is "Mini...

AI Technical Summary

Problems solved by technology

Traditional miniature external fixators for phalanx are mostly imported, which are expensive and complicated to operate.

[0003] In order to solve the above-mentioned technical problems, the inventor has designed a miniature external fixator for phalanx. This technology is disclosed in the Chinese invention patent (patent number is CN201610045668.7, and the title of the invention is "Miniature External Fixator for Fingers"). Axially stretching, pulling and compressing the finger fractures, and at the same time, there are wings on the two arms of the needle part, through the upper and lower positioning screws of the wings, the two arms can be rotated and positioned at a small angle (within 20°) It can achieve the rotation correction of the fracture site within a small angle range; but in the clinical use process, the effect of relying on the upper and lower screws on the two wings to achieve the rotation correction of the fracture site is not ideal

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