Surgically-implantable stepping motor

Details Surgically-implantable stepping motor Surgically-implantable stepping motor

1983-12-08

1986-10-07

Rosenbaum, C. Fred

Surgery

Devices transferring fluids from within one area of body to...

With flow control means

310 40MM, 310181, A61M 500

Patent

active

046156917

ABSTRACT:
A stepping motor isolated physically from electrical power sources and powered by the influence of a magnetic field applied from outside the apparatus, the stepping motor including a rotor and one or more stator elements, the stator elements being composed of magnetically soft and permeable material shaped and positioned with respect to the rotor so that when magnetized under the influence of the external field the stator elements strengthen and orient the magnetic field in their vicinities so as to cause movement of the rotor.

REFERENCES:
patent: 3304449 (1967-02-01), Pohlman
patent: 3378710 (1968-04-01), Martin, Jr.
patent: 3391289 (1968-07-01), Danilewicz et al.
patent: 3527220 (1970-09-01), Summers
patent: 3886948 (1975-06-01), Hakim
patent: 4156422 (1979-05-01), Hildebrandt et al.
patent: 4340038 (1982-07-01), McKean
patent: 4360007 (1982-11-01), Levy et al.
patent: 4443214 (1984-04-01), Marion
patent: 4540400 (1985-09-01), Hoover
Conrad, Coleman W., "Stepping Motors", Machine Design, Apr. 11, 1974, pp. 78-80.

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