Disposable handpiece for dental procedures

Dentistry – Apparatus – Having motor or means to transmit motion from motor to tool

Patent

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Details

433126, 433127, A61C 110, A61C 300, A61C 108, A61C 114

Patent

active

053082427

ABSTRACT:
A disposable hand tool of the compressed air drive type is disclosed for use in performing dental procedures on a workpiece. An elongated body has conduits penetrating a base at one end of the body. The conduits allow entry of a light beam, a pressurized water stream, and a compressed air stream into the body. The base includes attachment threads for securing the body to a source of the light beam, pressurized water stream, and compressed air stream. A plurality of passageways are in communication with the conduits for conducting the light beam, the water stream, and the air stream through the body. A head at the opposite end of the body contains bearings attached to a supporting shaft. The shaft includes a turbine impeller and a clamping hole for removable attachment of a dental bur to the shaft. The air stream drives the impeller at a high speed for rotating the bur about a rotational axis. An opening in the body adjacent to the head allows release of the light beam, the pressurized water stream, and a portion of the compressed air stream in a direction toward the distal end of the bur so that the bur, the light beam, the water stream, and the air stream may all converge on the workpiece.

REFERENCES:
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patent: 4406470 (1983-09-01), Kataoka et al.
patent: 4661060 (1987-04-01), Strohmaier
patent: 4795343 (1989-01-01), Choisser
patent: 4842516 (1989-06-01), Choisser
patent: 4978297 (1990-12-01), Vlock
patent: 5028233 (1991-06-01), Witherby
patent: 5156547 (1992-10-01), Bailey
patent: 5160263 (1992-11-01), Meller et al.

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