Sterilizable non-lubricated rotary instrument for dental and med

Details Sterilizable non-lubricated rotary instrument for dental and med Sterilizable non-lubricated rotary instrument for dental and med

1989-05-08

1990-10-30

Wilson, John J.

Dentistry

Apparatus

Having motor or means to transmit motion from motor to tool

415229, 415904, 384492, A61C 105

Patent

active

049665529

ABSTRACT:
A handpiece particularly suited for medical/dental applications in which a rotary tool is used upon and in proximity with anatomical structures. The handpiece has an anti-friction bearing assembly which mounts the rotary tool. At least the rolling elements of the bearing assembly are formed of ceramic material. The instrument may be sterilized repeatedly without requiring lubrication either in use or between sterilization cycles.

REFERENCES:
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"Evaluation of Roller Bearings Containing Hot Pressed Silicon Nitride Rolling Elements" by H. R. Baumgartner, Paper presented at 2nd Army Materials Technology Conference, Ceramics for High Performance Applications, Hyannis, MA, Nov. 13-16, 1973.
"Hydraulic Turbine Contra-Angle Landpiece", Nelson et al., Journal of the Amer. Dent. Assoc., vol. 47, pp. 324-329, 1953.

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