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`Notice
`
`This translation is machine-generated. it cannot be guaranteed that it is intelligible, accurate,
`
`complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
`
`financial decisions, should not be based on machine—translation output.
`
`DESCRIPTION EPO459401
`
`The present invention relates to an applicator coil for magnetic field therapy.
`
`From document DE-A—24 32 493 an applicator coil in the form of a multi-layer cylinder or solenoid
`
`coil with an oval or elliptical cross section is known.
`
`The applicator coils of the type of interest here are used in human and veterinary medicine for
`
`therapeutic treatment by means of low—frequency, alternating magnetic fields with as few
`
`harmonics as possible, the frequency of which is preferably below 20 Hz. The magnetic field can
`
`be used directly for treatment or can be used to induce low-frequency alternating currents in an
`
`implanted pick-up coil, which are part of a device for promoting the bone or Forms tissue growth
`
`(see e.g. 8. documents DE-C—19 18 299 and DE-A—21 16 869)
`
`The known hollow cylindrical applicator coils are used primarily for the treatment of extremities or
`
`the trunk and are pushed onto the part of the body to be treated. However, they are less suitable
`
`for the targeted treatment of protruding parts of the body, such as a shoulder and the facial area.
`
`The present invention is accordingly based on the object of specifying an applicator coil for
`
`generating a low—frequency magnetic field for an electromagnetic therapy device, which is
`
`particularly suitable for the targeted treatment of protruding parts of the human and possibly
`
`animal body.
`
`This task is solved by an applicator coil which essentially has the shape of an oval—shaped
`
`16—12—2019
`
`1
`
`

`

`spherical zone.
`
`Further developments and advantageous refinements of the applicator coil according to the
`
`invention are the subject of the dependent claims.
`
`The fact that the applicator coil essentially has the shape of an oval or spherical zone deformed in
`
`the manner of a trapezoid with rounded corners, that is to say it is dome-shaped with a cross
`
`section which tapers from a larger opening to a smaller opening, allows it to be tight protruding
`
`body parts, such as the face or a shoulder, which ensures effective treatment.
`
`in preferred developments of the present applicator coil, the inside is provided with nozzles
`
`through which a treatment fluid, such as a liquid spray or a gas, can be brought into effect on the
`
`surface of the treated body part.
`
`A preferred exemplary embodiment of the invention is explained in more detail below with
`
`reference to the drawings. FlG. 1 shows a perspective view of the outside of an applicator coil
`
`according to a preferred embodiment of the invention; FlG. 2: a perspective view of the inside of
`
`the applicator coil according to RS. 1 and FIG. 3: a somewhat simplified longitudinal section of the
`
`applicator coil according to FlGS. 1 and 2.
`
`The applicator coil shown in the drawings approximately has the shape of an egg-shaped or oval-
`
`shaped spherical zone. lt contains a correspondingly shaped multilayer wire winding 10, the turns
`
`of which are essentially egg-shaped or have the shape of trapezoids with rounded corners. The
`
`winding density can be somewhat larger at the further end than at the narrower end of the coil.
`
`The winding 10 is surrounded by a plastic jacket 12, which consists of two shells 12a, 12b, which
`
`at 15, 16 have flange-like edges which are glued or welded together. A handle 14 is attached to
`
`the narrower or more pointed end of the outer shell 12a. The applicator coil has a narrower
`
`opening 18 which is delimited by a rounded part of the outer shell 12a. At the other end 20, the
`
`applicator coil is essentially flat except for the flanges 15. The coil winding 10 is provided with
`
`connections 21 which are accommodated in the handle 14 and are connected to a connecting
`
`cable 22 with which the applicator coil can be connected to a generator unit for generating a low—
`
`frequency, sinusoidal alternating current, the frequency of which can preferably be varied between
`
`approximately 2 and 20 Hz ,
`
`According to a preferred embodiment, the applicator coil is provided with an arrangement for
`
`16—12—2019
`
`2
`
`

`

`feeding a treatment fluid. For this purpose, it has openings or nozzles 24 on the inner wall formed
`
`by the inner shell 12b, which are connected via branch lines 26 to a feed line 28, to which a hose
`
`30 is in turn connected. The tube 30 is connected to a source of a liquid or gaseous treatment
`
`agent when the applicator coil is used and allows the magnetic field treatment to be supported by
`
`treating the surface of the treated body part with a suitable fluid, such as a medicinal product or a
`cosmetic.
`
`Electrodes 32 can be provided on the inside of the plasticjacket 12, by means of which an
`
`electrical field can be applied galvanically or capacitively to the part of the body to be treated.
`
`These electrodes can be connected via their own supply line (not shown) to a suitable generator
`
`for an AC voltage that is symmetrical or asymmetrical with respect to zero or a unipolar voltage
`
`with low—frequency ripple, is. a DC voltage that is superimposed on an AC voltage, or to its own
`
`pick—up coil (not shown) can be connected, in which a corresponding low—frequency voltage can be
`
`induced by the winding 10. This pick-up coil can be rotatably arranged in the plasticjacket 12 in
`
`order to be able to adjust the intensity and / or phase position of the induced alternating voltage,
`
`and can optionally be coupled to a rectifier circuit in order to generate an alternating voltage which
`
`is asymmetrical with respect to zero or a wavy unipolar voltage for the electrodes.
`
`16—12—2019
`
`3
`
`