Special draw hook for forming chin

Abstract

The invention provides a special draw hook for forming a chin, which is used for protecting chin nerves in a chin forming technology and belongs to the technical field of clinical medicine. The chin forming technology comprises a plurality of abnormal surgeries including correction of chin overdevelopment and maldevelopment, and chin part deflection and the like which involve three-dimensional directions including front and back, up and down, and left and right of a chin part. The special draw hook for forming the chin is composed of a draw hook body part and a draw hook handle; in the surgery, the special draw hook for forming the chin is arranged on an osteotomy line of the chin part and is basically parallel to the osteotomy line; the front end of the draw hook is arranged on a bone surface under the chin nerves and the draw hook handle is located at a mouth corner region at the opposite side; a straight-line-shaped gap is remained reserved in the middle of the draw hook body part, and the chin forming osteotomy line can be exposed from the gap region; an osteotomy device is put into the gap region to saw back and forth so that the chin forming surgery is finished. The special draw hook for forming the chin is divided into left and right parts which are applied when surgeries at the two sides of the chin part are done. By adopting the special draw hook for forming the chin, a better surgery view field is provided for the chin forming technology, the protection on the chin nerves and mucosal tissues of mouth corners is facilitated, the surgery efficiency is improved and the surgery risks are reduced at the same time.

Description

technical field [0001] The invention belongs to the technical field of clinical medicine, and in particular relates to a retractor specially used for genioplasty to protect the mental nerve during genioplasty. Background technique [0002] "Three courtyards and five eyes" are important indicators to measure facial beauty and ugliness. The chin is an important part of the lower 1 / 3 of the face in the "three courts". Its own shape, position, and harmonious proportional relationship with the upper and middle faces are one of the criteria for facial aesthetics. Genioplasty is a surgery that corrects various abnormalities such as hyperplasia, dysplasia, and deviation of the chin. [0003] A common surgical risk in genioplasty is injury to the mental nerve, which is the segment of the mandibular branch of the trigeminal nerve after it exits the mental foramen along the inferior alveolar, innervating the skin and mucous membranes of the chin and lower lip. Because the osteotomy l...

AI Technical Summary

Problems solved by technology

Because the osteotomy line is usually located 3 to 4 mm below the lower edge of the bilateral mental foramen, excessive exposure, pulling or cutting of the mental nerve during the operation will lead to postoperative numbness and insensitivity in the relevant area, and some may even be difficult to recover for the rest of their lives. cause great distress

Traditionally, when performing osteotomy below and behind the mental foramen area, there is no special instrument to protect the mental nerve bundle while opening the surgical field, which is a technical problem in the clinical implementation of genioplasty

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