Dentistry – Orthodontics – Tool
Patent
1995-03-22
1996-08-06
O'Connor, Cary E.
Dentistry
Orthodontics
Tool
433159, 606148, 140119, 140121, A61C 300, B21F 700
Patent
active
055428436
ABSTRACT:
An autoclavable ligation instrument for use in dental or medical applications which includes a ligature gripping tool having a pair of jaws with handle members connected thereto, and a drive mechanism for causing rotational movement of the gripping tool for consequent twisting of opposite ends of a ligature being gripped thereby. The drive mechanism includes a spring biased helically shaped drive shaft which is engaged by a drive follower nut that is connected to the gripping tool, such that activation of the drive mechanism causes the drive follower nut, and consequently the gripping tool, to rotate about the helically shaped drive shaft. The gripping tool includes a releasable locking mechanism for locking the jaws of the gripping tool in their closed position, and the gripping tool and drive mechanism are disassemblable and constructed of an autoclavable material to facilitate sterilization thereof.
REFERENCES:
patent: 1740392 (1929-12-01), Donaldson
patent: 2394807 (1946-02-01), Robinson
patent: 2737983 (1956-03-01), Pray
patent: 3092152 (1963-06-01), Neff
patent: 4392494 (1983-07-01), Ashby
patent: 4842025 (1989-06-01), Box et al.
patent: 5211209 (1993-05-01), Geibel et al.
Ortho-Ply catalog, p. 21.
Parker, Quick Coupling Division, p. A8.
Photograph (marked Exhibit A) of airline industry tool.
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