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Safety tensioning system for orthodontic face-bow - has automatic release for spring tensioner and limiter restraining distance of travel of bow
Safety tensioning system for orthodontic face-bow - has automatic release for spring tensioner and limiter restraining distance of travel of bow
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机译:正畸面弓的安全张紧系统-自动释放弹簧张紧器和限制器,限制弓的行进距离
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摘要
The orthodontic headgear appliance has a safety system which includes a release mechanism for the headgear tensioner, and a system for selectively setting limits for free travel of the facebow. A disconnecting system is activated when a forward force on the facebow is still being applied when the travel limit is reached. A coil spring produces the tensioning forces of the system and is enclosed in a tube. The tube has elongated cutouts which set the limits of travel of the spring.
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