Surgery – Truss – Perineal
Patent
1980-08-05
1982-11-23
Chambers, A. Michael
Surgery
Truss
Perineal
251 7, 251230, 251205, 74142, 128274, 128DIG25, A61B 1900
Patent
active
043600077
ABSTRACT:
An actuator device comprising a housing in which there is arranged a permanent magnet extending at 90.degree. from an axially supported member, said member being attached to a driving pawl via a springy leaf, the movement of said magnet being limited by two stop members attached to the bottom plate of the housing, a ratchet wheel with a plurality of teeth pointing downwards and adapted to be engaged by said pawl, another pawl attached to a springy member rigidly attached to said housing, the pawl being adapted to stop a reverse movement of the ratchet wheel, the arrangement being such that application of a magnetic field of adequate strength from a certain distance results in the movement of the magnet and the pawl attached thereto within the range defined by the stop members, each such movement resulting in the stepwise advance of the ratchet wheel by one tooth.
REFERENCES:
patent: 802959 (1905-10-01), Waterman
patent: 2431836 (1947-12-01), Snyder et al.
patent: 3419008 (1968-12-01), Plishner
patent: 3817237 (1974-06-01), Bolduc
patent: 4014318 (1977-05-01), Dockum et al.
patent: 4024855 (1977-05-01), Bucalo
patent: 4266697 (1981-05-01), Zissimopoulos
Levy Itshak
Ron Samuel
Sahar Abraham
Wolowelsky Jehoshua
Chambers A. Michael
Yeda Research and Development Co. Ltd.
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