Surgery – Truss – Perineal
Patent
1974-06-10
1976-03-16
Howell, Kyle L.
Surgery
Truss
Perineal
33174D, A61B 510
Patent
active
039439135
ABSTRACT:
A dental impression tray fastened to teeth in one quadrant, supports through a semi-rigid, non-resilient member, an electric transducer having an input probe positioned against the lingual surface of a tooth. A strip chart recorder is electrically coupled to the transducer and produces a graph in response to movement of the tooth caused by externally manually applied bi-directional forces on the tooth. A special tool is employed to apply forces, being adapted not only to movement of molars, but also incisors.
REFERENCES:
patent: 2299285 (1942-10-01), Taylor, Jr.
patent: 3106779 (1963-10-01), Seaman
patent: 3577855 (1971-05-01), Baum
patent: 3583071 (1971-06-01), Bitter
patent: 3752144 (1973-08-01), Weigle, Jr.
patent: 3768459 (1973-10-01), Cannon et al.
Thomas, D.H. et al., Amer. Journ. of Med. Electronics, Apr.-June, 1964, pp. 96-100.
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