Condylar process broken end three-dimensional positioning and resetting device

Abstract

The invention discloses a condylar process broken end three-dimensional positioning and resetting device which comprises a sleeve assembly, a ratchet assembly located in the sleeve assembly, a wrench driving the ratchet assembly to rotate and positioning assemblies arranged on the two sides of the sleeve assembly. The positioning assembly comprises a sliding block with a moving block and scales. The sleeve assembly comprises a sleeve with the interior of a hollow structure and extension arms fixedly connected to the two sides of the outer middle of the sleeve correspondingly. The ratchet assembly comprises ratchet bars, and expanding strips are arranged between the ratchet bars. And the ratchet assembly is rotated to enable the distraction strip to move and extrude the moving shaft in the extension arm to slide out of the sleeve. And the concave surface of the stopping end connected with the end part of the moving shaft moves outwards, and is in close contact with and extrudes the positioning ball of the sliding block. And under the action of friction force, the sliding block is in close contact with the concave surface in the tail end cavity and is kept fixed. During operation, scales on the sliding block are recorded, the position relation of the condyle process relative to the mandible can be obtained by keeping the sleeve assembly and the positioning assembly immovable, and the position relation can be recovered after osteotomy.

Description

technical field [0001] The invention relates to a three-dimensional positioning and resetting device for a condyle cut end, belonging to the technical field of oral and maxillofacial surgical instruments. Background technique [0002] The temporomandibular joint consists of the mandibular condyle, the articular surface of the temporal bone, and the articular disc between the two. It is a key component of the functional movement of the oral and maxillofacial region. In physiological activities, such as chewing, speech, etc., the three-dimensional position of the condyle, the movement of the mandible and the occlusal relationship of the upper and lower dentition coordinate, adapt and influence each other, and the three are in a dynamic balance. However, changes in the three-dimensional position of the condyles caused by organic lesions or medical factors can lead to temporomandibular joint damage, resulting in joint disturbance symptoms such as joint snapping, mouth deviation,...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a three-dimensional positioning and reset device for the stump of the condyle, which is used to solve the problem of how to effectively and accurately restore the three-dimensional position of the stump of the condyle when the defect is repaired with a free bone flap after segmental resection of the mandible. clinical problems

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