Hinge-type skull pelvic ring

Abstract

The invention discloses a hinge-type skull pelvic ring. The ring includes a connecting rod assembly, the upper end of the connecting rod assembly is connected with a skull ring assembly, the lower end of the connecting rod assembly is connected with a pelvic ring assembly, the connecting rod assembly includes a forward-direction and backward-direction threaded rod , and both ends of the forward-direction and backward-direction threaded rod are connected with a locking frame body, wherein one end of a ball-headed rod is in spherical joint with each locking frame body, and the other end of the ball-headed rod is rotatably connected to one end of an adjusting sleeve the other end of which is rotatably connected with a crooked rod; the skull ring assembly comprises a skull ring, and the pelvic ring assembly includes a pelvic ring which is composed of two semi-circular rings matched with each other; the skull ring and the pelvic ring are both connected to the crooked rod through a hook assembly which is composed of a hook, and the hook is in spherical joint with the crooked rod. The hinge-type skull pelvic ring can achieve adjustment of an arbitrary space position, and is capable of well adapting to abnormal shapes of the backs of different patients, avoiding problems of irregularity and easy springback in manual shaping, effectively shortening operation time, reducing operation difficulty and providing more convenience for popularization.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a hinged skull and pelvis ring. Background technique [0002] Adolescent idiopathic scoliosis is a common spinal deformity. The greater the degree of scoliosis, the more obvious the characteristics of trunk imbalance, head deviation from the central axis, uneven shoulders, razor back, and chest collapse. Scoliosis is often not a simple curvature of the spine. The thorax is also deformed. Compressing the thorax can cause reduced lung function and lung capacity, seriously affect the development of important organs, and is often accompanied by decreased cardiopulmonary function and spinal nerve damage. For patients with a Cobe angle greater than 90°, cranial-pelvic ring traction before correction can improve the correction effect, improve cardiopulmonary function, and increase surgical safety. [0003] The skull and pelvic ring retractor was first created by Professor Ma Ji...

AI Technical Summary

Problems solved by technology

However, the above-mentioned patents have poor rotation resistance when they are connected by a threaded rod; the single shape cannot well adapt to the special body shape of the patient, and artificial shaping is required during the operation; secondly, the specific structural design of the skull ring and pelvic ring is not clear.

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