Twist drills for bone surgery, in particular for dental surgery

Details Twist drills for bone surgery, in particular for dental surgery Twist drills for bone surgery, in particular for dental surgery

1993-10-22

1995-07-04

O'Connor, Cary E.

Dentistry

Apparatus

Tool bit

A61C 302

Patent

active

054295041

ABSTRACT:
The drill consists of a cylindrical body (1) in which at least two helical flutes (2) are hollowed out, which helical flutes (2) delimit as many helical cutting edges (3), this body (1) being extended via a drive shank (4). The body (1) is equipped with guide marks consisting of circumferential grooves (7), having a profile substantially in the shape of an arc of a circle, which are formed in the cylindrical body (1), and of an elastic ring (8, 9 or 10) which has a profile adapted to that of the grooves (7) and a more or less toric shape and which is capable of being placed, as desired, in one or other of these grooves (7), before the drill is put into operation, and of remaining therein until completion of this operation.

REFERENCES:
patent: 4345899 (1982-08-01), Vlock
patent: 4431416 (1984-02-01), Niznick
patent: 4474556 (1984-10-01), Ellis et al.
patent: 4820156 (1989-04-01), Ross
patent: 5035617 (1991-07-01), McSpadden
patent: 5261818 (1993-11-01), Shaw

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