Motorized dental handpiece with fiber optic illumination

Dentistry – Apparatus – Having means to emit radiation or facilitate viewing of the...

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433115, A61C 100, A61C 300, A61C 105

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active

050964186

ABSTRACT:
An air motor and accompanying air distributor and motor output drive means are axially stacked within a tubular dental handpiece. A fiber optic bundle extends through a special passage in the thick-wall side of an eccentrically positioned cavity in the motor casing. The bundle also extends axially through the other components in the handpiece and further is directed to a dental tool head mounted on one end of the handpiece. The fiber optic bundle very effectively illuminates a cutting burr or other element mounted on the tool head, a gasket adjacent the motor prevents leakage of air past the metal-to-metal surfaces of the air motor and surrounding housing. The gasket is also provided with a hole through a thick-edge wall for the fiber optic bundle. A further flat resilient seal prevents air passage passed the motor output shaft and the spaces between the bearing races.

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