Dental head unit capable of measuring root canal length, and...

Details Dental head unit capable of measuring root canal length, and... Dental head unit capable of measuring root canal length, and...

2006-07-04

2006-07-04

O'Connor, Cary E. (Department: 3732)

Dentistry

Apparatus

Having gauge or guide

C433S027000, C433S075000

Reexamination Certificate

active

07070411

ABSTRACT:
The present invention relates to a dental head unit capable of measuring a root canal length of a patient. The head unit includes a head section having a sleeve rotatably supported therein for detachably holding a cutting tool therein, a neck section extending proximally from the head section and having a proximal end for connecting to a handpiece body, a contact capable of detachably contacting the cutting tool for providing electric connection to the cutting tool when in contact, and a contact holder fixed to a proximal end of the contact and axially slidable with respect to the neck section. The contact holder has a lead attachment to which a lead for electrically connecting the contact to a root canal length measuring device is detachably attached. The present invention also relates to a contact holder assembly including the contact and the contact holder.

REFERENCES:
patent: 5897315 (1999-04-01), Nakayama et al.
patent: 5902105 (1999-05-01), Uejima et al.
patent: 6520773 (2003-02-01), Weber
patent: 6845265 (2005-01-01), Thacker

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