Dental handpiece having an optical fiberscope

Details Dental handpiece having an optical fiberscope Dental handpiece having an optical fiberscope

1984-08-31

1986-03-25

Wilson, John J.

Dentistry

Apparatus

Having means to emit radiation or facilitate viewing of the...

433126, A61C 300

Patent

active

045780340

ABSTRACT:
A dental handpiece has a handle portion including a powerhead assembly integrally supported on a front end of the handle portion and a base cylindrical member located in a cylindrical hollow portion of the handle portion. The base cylindrical member has a first axial central passage for a fiberscope, a second side passage for supplying air under pressure, a third side passage for supplying water and a fourth passage for exhaust. A middle connector has a large diameter front hollow portion and a small diameter rear hollow portion having internal threads, three radial openings provided through the connector at equally spaced locations, passages corresponding to the passages in the base cylindrical member and a tubular plunger slidably mounted thereon. A driven ball and a driving ball are slidably located in each radial opening for engaging a circumferential slot around an external rear end portion of a hollow mount insert threadedly fitted into the rear end portion of the base cylindrical member. A rear connector has passages corresponding to those of the base cylindrical member and the middle connector. An electric lamp is located in the larger diameter front hollow portion of the middle connector and has a plurality of fluid pressure passages for removing heat from the electric lamp. The tubular plunger is slidably movable for radially displacing the driven and driving balls to disconnect or assemble the dental handpiece.

REFERENCES:
patent: 3631597 (1969-09-01), Lieb et al.
patent: 4104799 (1978-08-01), Leonard
patent: 4202102 (1980-05-01), Nakanishi
patent: 4260382 (1981-04-01), Thomson
patent: 4398885 (1983-08-01), Loge et al.
patent: 4403956 (1983-09-01), Nakanishi
patent: 4403959 (1983-09-01), Hatakeyama
patent: 4431412 (1984-02-01), Lares et al.

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