Quasistatic biological cell and tissue modifier

Details Quasistatic biological cell and tissue modifier Quasistatic biological cell and tissue modifier

1988-05-19

1993-07-06

Shay, David M.

Surgery

Magnetic field applied to body for therapy

Electromagnetic coil

600 14, 128898, A61N 204

Patent

active

052249220

ABSTRACT:
A quasistatic biological cell and tissue modifier is provided that presents a controlled electromagnetic environment which produces beneficial effects in biological material. The electromagnetic environment consists of a static magnetic field and a time-varying field. The static magnetic field potentiates the effect of the time-varying magnetic field and further modulates the amplitude at which the time-varying field is biologically active. The static field is provided by a permanent magnet or through electromagnetic means. In one embodiment the coil that produces the time-varying field is a single coplanar helical coil. In another embodiment it is a plurality of coplanar helical coil segments connected in parallel. In these two embodiments the coil is a flexible printed circuit that can be contoured around an organ. The static magnetic component is provided by a flexible permanent magnet or by the net bias of the time-varying field itself. A third embodiment with two small rigid coils uses a clamp to attach the coils to a patient's ear or other part of the body.

REFERENCES:
patent: 4105017 (1978-08-01), Ryaby et al.
patent: 4266532 (1981-05-01), Ryaby et al.
patent: 4428366 (1984-01-01), Findl et al.
patent: 4501265 (1985-02-01), Pescatore
patent: 4641633 (1987-02-01), Delgado
patent: 4932951 (1990-06-01), Liboff et al.

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