Morgan, Lewis & Bockius LLP
Lateral pharyngeal wall tractor and implantation method
A lateral pharyngeal wall tractor including a bone fixer, a traction mechanism and a lateral pharyngeal wall fixer; wherein the lateral pharyngeal wall fixer is configured to be fixed on an M. palatopharyngeus or other submucous tissues of a lateral pharyngeal wall; the bone fixer is configured to be fixed on a processus alveolaris or a hamulus pterygoideus or a processus pterygoideus as a supporting point; one end of the traction mechanism is connected to the bone fixer, the other end is connected to the lateral pharyngeal wall fixer; the elastic traction force produced by the traction mechanism is greater than the collapse force of the lateral pharyngeal wall which is produced by negative pressure during inspiration, but is less than the contraction force which is produced by the muscle of the lateral pharyngeal wall during deglutition.
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Xing Xiangmin
Zhou Zhang