Orthodontic chain application tool

Details Orthodontic chain application tool Orthodontic chain application tool

1982-08-25

1984-03-13

Wilson, John J.

Dentistry

Orthodontics

Tool

433159, 221310, 206390, A61C 300

Patent

active

044365101

ABSTRACT:
An applicator tool for dispensing and clamping individual loops in an orthodontic loop chain which is composed of a series of elastomeric loops connected by breakaway isthmuses. The tool includes a pair of loop-gripping tips adapted for clamping an end loop in the chain in a manner permitting the clamped loop to be placed on an orthodontic tooth appliance, to secure an archwire thereto. A constriction zone formed in the tool, adjacent the loop-gripping tips, functions to restrain the chain at positions where successive end loops are placed for clamping between the tool tips. The chain is advanced in the tool, in a loop-by-loop manner, by exerting a force on the chain in a downstream direction, to pull a restrained chain loop through the constriction zone by reversible loop elongation. The force required to advance the chain by one loop is less than that required to break an isthmus in the chain.

REFERENCES:
patent: 1143927 (1915-06-01), Allen
patent: 3085339 (1963-04-01), Wolfe
patent: 3903601 (1975-09-01), Anderson et al.
patent: 4001940 (1977-01-01), Cusato
patent: 4106374 (1978-08-01), Dragan
patent: 4217686 (1980-08-01), Dragan
patent: 4277236 (1981-07-01), Kurz

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