Abstract: A magnetic coil arrangement for a magnetic field applicator (1) which heats magnetic or magnetizable substances or solids in biological tissue is disclosed which includes a coolable magnetic yoke (2) with two spaced, opposing pole shoes (7, 8) separated from each other by a exposure volume gap (12) on the magnetic yoke (2). A magnetic coil (22) is assigned to each of the two pole shoes (7, 8) to produce a magnetic alternating field. The magnetic coils are designed as disk coils with helicoidally extending coil windings (39) respectively surrounding the pole shoe end of the assigned pole shoe (7, 8) with a surrounding magnetic coil/pole shoe gap (57). According to the invention, the magnetic coil (22) is respectively arranged in a coil box annularly surrounding the assigned pole shoe (7, 8), with the coil box (9, 10) being provided with at least one cooling air admission port (51, 52, 53) for connection of a cooling air pump and with at least one cooling air discharge port (57, 66).

Abstract: A magnetic field applicator to heat magnetic substances in biological tissue, having a magnetic yoke with two pole shoes across from each other and separated from each other by a distance that defines the magnetic field exposure volume produced by the applicator, and with two magnetic coils, one assigned to each of the two pole shoes, to produce a magnetic field. The magnetic yoke and the pole shoes consist of ferrite segments assembled together. The pole shoes oppose each other and are surrounded by magnetic disk-shaped coils with one or more windings extending helicoidally, which creates an intermediate air gap between the pole shoes and coils. This results in a magnetic field applicator with the ability to effectively and efficiently administer hyperthermia and thermo-ablation procedures to destroy cancerous tissue in a patient, as well as having uses in other medical and industrial applications.

Abstract: A magnetic field applicator to heat magnetic substances in biological tissue, having a magnetic yoke with two pole shoes across from each other and separated from each other by a distance that defines the magnetic field exposure volume produced by the applicator, and with two magnetic coils, one assigned to each of the two pole shoes, to produce a magnetic field. The magnetic yoke and the pole shoes consist of ferrite segments assembled together. Additionally, the magnetic field applicator is composed of a magnetic yoke having two parallel vertical yoke elements of identical geometry spaced apart a distance from each other, and two transverse yoke elements disposed between said vertical yoke elements. The pole shoes, surrounded by disk-shaped magnetic coils, are attached to the center of said transverse yoke elements and oppose each other over a prescribed distance.