Dentistry – Apparatus – Broach
Patent
1989-04-24
1991-02-12
Wilson, John J.
Dentistry
Apparatus
Broach
433119, A61C 502
Patent
active
049920480
ABSTRACT:
A broaching tool has a needle-shaped working portion (2) and a shank portion which is shaped for attachment in the distal end (18) of a drive bar (12) of a drive instrument for the tool. The shank portion of the tool has at least one bend (8) and preferably also a second oppositely directed bend (10). A proximal end (14) of the drive bar (12) of the drive instrument is adapted to be coupled to a vibratory element (16) which, thereby, is able to generate longitudinal high frequency vibrations in the drive bar (12). The distal drive bar end (18) is angled (B) about an axis (22) which acts as a hinge having a certain rigidity of bending. By adapting and matching a. o. the angle (B) and the bends (8, 10) in the tool, it is possible to compensate away distructive natural oscillations in the tool which, thereby, can be powered and used with high working frequencies without risk of fatigue fractures in the material of the tool.
REFERENCES:
patent: 736101 (1903-08-01), Hough
patent: 873100 (1907-12-01), Skalstad
patent: 1015039 (1912-01-01), Lasbury
patent: 1168052 (1916-01-01), Bolls
patent: 1356755 (1920-10-01), Bolls
patent: 1369112 (1921-02-01), Jones
patent: 4229168 (1980-10-01), Scholz
patent: 4353696 (1982-10-01), Bridges
patent: 4364730 (1982-12-01), Axelsson
patent: 4484891 (1984-11-01), Nash
patent: 4492574 (1985-01-01), Warrin et al.
patent: 4505676 (1985-03-01), Gonser
patent: 4571183 (1986-02-01), Nash
LandOfFree
Tool for cleansing tooth root canals does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Tool for cleansing tooth root canals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tool for cleansing tooth root canals will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-17902