Dental hand piece

Details Dental hand piece Dental hand piece

1993-03-01

1994-08-30

O'Connor, Cary E.

Dentistry

Apparatus

Having intra-oral dispensing means

433 91, 433132, A61C 1702, A61C 1706

Patent

active

053421965

ABSTRACT:
An aspirating dental hand piece having at its distal end a vacuum scoop that circumscribes the work tool and automatically carries away cooling water and debris during operation of the hand piece. The hand piece includes a two-part handle. The distal portion of the handle terminates in a suction scoop or shroud within which the gas driven motor is housed. This portion of the handle is divided into two portions, one of which houses the cooling fluid, gas and fiber optic conduits, and the other of which forms a fluid passageway in communication with the suction scoop for carrying away the cooling fluid and the debris generated during the drilling and grinding operations. The fluid and debris passageway is sealed with respect to the conduit carrying portion of the handle.

REFERENCES:
patent: 3014278 (1961-12-01), Aymar et al.
patent: 3526219 (1970-09-01), Balamuth
patent: 3646678 (1972-03-01), McAlister
patent: 4176453 (1979-12-01), Abbott
patent: 4253831 (1981-03-01), Eaton, II
patent: 4917603 (1990-04-01), Haack
patent: 4941828 (1990-07-01), Kimura
patent: 5122153 (1992-06-01), Harrel

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