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US 4,229,168 AGranted
Contra-angle ultrasonic endodontic instrument
OwnerHoward W. Scholz, Jr.inventor
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Abstract
A contra-angle ultrasonic endodontic instrument is described which includes, basically, a head mechanically coupled to the ultrasonically driven shaft of an endodontic instrument. The head includes means, such as one or more holes, to receive a shaft of an endodontic tool of relatively uniform longitudinal and lateral cross-section with its longitudinal axis at a substantial angle to the longitudinal axis of the shaft, thus, ultrasonic vibrations in the shaft are transferred to the tool.
Claims5
A contra-angle ultrasonic endodontic instrument including:
- ultrasonic vibration generator means for simultaneously producing both longitudinal and lateral ultrasonic vibrations;
- means for actuating the ultrasonic generator means to produce vibrations;
- a shaft mechanically coupled to the ultrasonic generator means to vibrate both longitudinal and laterally along its main longitudinal axis;
- an endodontic tool of relatively uniform longitudinal and lateral cross-section that is spiraled longitudinally and that is free of indentations along its length;
- and
- means for mechanically coupling the endodontic tool to the shaft with the longitudinal axis of the tool at a substantial angle to the longitudinal axis of the shaft so that the ultrasonic vibrations in the shaft are transmitted to the tool.
3 more elements
Dependencies are inferred from the claim text.