Transducer activated tool tip

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

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Details

433215, A61C 107, A61C 303, A61C 308, A61C 500

Patent

active

055315976

ABSTRACT:
A transducer activated tool for contacting workpiece surfaces and directing fluid adjacent to said surfaces is disclosed. The tool may be ultrasonically activated by attachment to an insert that includes a magnetostrictive element. The tip includes distal surfaces shaped to contact the workpiece and additionally includes a fluid passageway internal to the tip that is bored generally along the centerline of the tip but is offset from the tip axis such that a discharge orifice is formed in the tip displaced from the distal tip end. The passageway is preferably angularly offset so that the discharge orifice is formed in the distal end of the tip about 2-8 mm from the distal end of the tip. The tip when shaped to conform to dental or tooth surfaces is particularly useful as a dental tool. In another embodiment the fluid passageway is eccentrically offset from the tip axis wherein the passageway is substantially parallel to the center axis but displaced therefrom preferably by about 0.1 to 0.5 mm. The tip end and fluid delivery passageway discharge orifice are located relative to each other such that fluid is provided to the workpiece or tip without the formation of excessive spray and without weakening the distal tip such that it is sufficiently strong to provide useful service in resisting flexural stresses and the like.

REFERENCES:
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patent: 4038571 (1977-06-01), Hellenkamp
patent: 4110908 (1978-09-01), Cranston
patent: 4168447 (1979-09-01), Bussiere et al.
patent: 4315742 (1982-02-01), Nash et al.
patent: 4370131 (1983-01-01), Banko
patent: 4578033 (1986-03-01), Mossle et al.
patent: 4589847 (1986-05-01), Loge et al.
patent: 4634376 (1987-01-01), Mossle et al.

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