Size-adjustable telescopic digital external fixator for bone rehabilitation

Abstract

The invention discloses a size-adjustable telescopic digital external fixator for bone rehabilitation. The fixator comprises six telescopic connecting rod modules and two telescopic fixing ring modules, wherein the two telescopic fixing ring modules are connected through the six telescopic connecting rod modules; each telescopic fixing ring module comprises three corner sleeves, three linear inserts, fixing bolts and fixing nuts, the three corner sleeves and the three linear inserts are connected in a staggered manner to form the whole telescopic fixing ring module; and each telescopic connecting rod module comprises an internal threaded rod, an external threaded rod, a first universal joint and a second universal joint. By adjusting the positions of nuts and telescoping of the corner sleeves and the linear inserts, the fixing ring size can be adjusted to improve adaptability; and the fixing ring size can be adjusted through telescoping, so that adaptability to use sizes of different patients and different requirements of upper and lower limbs can be realized, and the adaptability of the fixator is improved.

Description

technical field [0001] The present invention relates to the field of orthopedic correction and rehabilitation, and more specifically relates to a size-adjustable telescopic digital bone rehabilitation external fixator for external fixation of bone rehabilitation. Background technique [0002] Fixation devices are indispensable in surgical orthopedic treatment. The traditional fixation method generally uses internal fixation with steel plates, and now there is also a treatment method of external fixation with less trauma-Taylor skeleton external fixation. Dr. Taylor connected six telescopic extension rods obliquely to the proximal and distal rings, and they can rotate freely at the connection points. As long as the length of one of the extension rods is adjusted, one ring will change its position relative to the other . The computer program software can be used to calculate the length of the extension rod relative to the deformity parameters, and can imitate any deformity to...

AI Technical Summary

Problems solved by technology

When selecting the fixation ring, if the selected area is too large, it will increase the patient’s movement restrictions during rehabilitation and increase hidden dangers. If the selected area is too small, it will increase the difficulty of installing the steel needle and the extension rod, and even cannot be used.

However, due to the high production cost, it is unrealistic to require the hospital to back up every type of Taylor rack, and it is difficult to guarantee timeliness by ordering from the manufacturer through the hospital.

At the same time, due to the actual situation of the patient, it is difficult to achieve the best effect if the fixed frame whose size cannot be adjusted is used

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