WO2004043539A1 - Magnetic therapy pad - Google Patents

Magnetic therapy pad

Info

Publication number
WO2004043539A1
WO2004043539A1 PCT/GB2003/004804 GB0304804W WO2004043539A1 WO 2004043539 A1 WO2004043539 A1 WO 2004043539A1 GB 0304804 W GB0304804 W GB 0304804W WO 2004043539 A1 WO2004043539 A1 WO 2004043539A1
Authority
WO
Grant status
Application
Patent type
Prior art keywords
magnetic
material
layer
pad
textile
Prior art date
Application number
PCT/GB2003/004804
Other languages
French (fr)
Inventor
Robert Ian Butler
Original Assignee
Fgm International Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N2/00Magnetotherapy
    • A61N2/06Magnetotherapy using magnetic fields produced by permanent magnets

Abstract

A pad (1) for magnetic and heat therapy comprises a layer (2) of magnetic material bonded to a layer (3) of textile material. The layer of textile material strengthens the pad thus reducing the risk of splitting or tearing the magnetic material.

Description

Magnetic Therapy Pad

The present invention relates to a magnetic therapy pad.

Magnetic therapy has become an accepted treatment for patients suffering from a range of conditions. In particular, joint pain, such as that caused by arthritis, may be alleviated by application of an external magnetic field. Conveniently, this may be provided by a pad of sheet magnetic material which is placed on or near the patient's body at the area to be treated. A flexible pad is particularly beneficial as it may be bent to comply with the contours of the body. Flexible magnetic sheet has the drawback that the magnetic material may split when bent or creased. This splitting may cause discomfort or be unpleasant to the patient, and splits or tears will quickly cause the pad to be useless for its desired purpose.

Various conditions, for example muscle aches and pains, may also be alleviated by heat treatment of the area affected. The heat dilates the capillaries and allows blood to flow more freely around the area, which helps to dispel toxins from the area and relax the muscles. It has been known to heat affected areas using for example heated pads or infra-red lamps. However, it would be advantageous to combine the effects of heat and magnetic therapy with one simple device.

It is an object of the present invention to overcome the aforementioned problems, and provide a pad for magnetic therapy and heat treatment which is comfortable to use and with reduced possibility of splitting or tearing.

According to a first aspect of the invention, there is provided apparatus for therapy comprising a layer of magnetic material having first and second surfaces and a layer of textile material, the layer of magnetic material being bonded at the first surface to the layer of textile material. The magnetic material may comprise a powdered magnetic substance loaded into a flexible thermoplastic binder, which was preferably calendered into a sheet form and magnetised.

The magnetic substance may comprise a ferrite.

In a preferred embodiment, the magnetic substance comprises strontium- or barium- based ferrite.

The magnetic material advantageously comprises an array of parallel alternate north and south lineai- poles. Preferably these are arranged to be between about 3 and about 6 linear poles per cm.

The layer of magnetic material may be bonded to the layer of textile material with adhesive.

Preferably, the apparatus is flexible.

The layer of magnetic material preferably has a thickness in the range from about 0.3mm to about 0.75mm.

The second surface of the layer of magnetic material may have a UN coating.

Optionally, the second surface of the layer of magnetic material may include at least one adhesive region suitable in use for removably affixing the surface to an area of skin.

The textile material may be printed or dyed.

According to a second aspect of the invention there is provided the use for therapy of apparatus comprising a layer of magnetic material and a layer of textile material, the layer of magnetic material being bonded to the layer of textile material. The present invention will now be described, by way of example, with reference to the accompanying drawing in which:

Fig. 1 is a section through an example of a pad according to the present invention; and

Fig. 2 is a plan view of such a pad.

Referring to Figure 1, a preferred embodiment of a magnetic therapy pad 1 comprises a layer 2 of magnetic material formed from a compound of fine magnetic powder loaded into a flexible thermoplastic binder, which was calendered into a sheet form and magnetised. A ferrite, such as a strontium- or barium-based ferrite is ideally used as the magnetic powder, as this provides good magnetic characteristics; typically the material will have a gauss rating of about 1950 to about 2200 Gauss, and a vertical pull of about 23g/cm2. Products with a gauss rating as low as 800 Gauss may be produced using cheaper materials. The layer of magnetic material will preferably have a thickness in the range from about 0.3mm to about 0.75mm, allowing the pad to be flexible. The thermoplastic material is a poor conductor of heat, and so when placed close to the body insulates and consequently warms the area. This wanning is also beneficial to pain relief and muscle relaxation. The thickness may be selected so that the pad may be used on a particular area of the body, where different levels of flexibility, magnetic field or heat insulation may be required.

The layer 2 of magnetic material is bonded to a layer 3 of textile material to form a laminate structure. In the preferred embodiment the textile material comprises a loomstate 50% cotton 50% polyester mix fabric. The fabric may be bonded to the magnetic material using an acrylic-based adhesive. The textile layer acts to strengthen the magnetic material whilst retaining its flexibility, so that there is reduced possibility of splitting or tearing.

A UN coating 4 is applied to at least part of the outer surface of the magnetic layer 2 which smooths the surface and adds gloss. A typical UN coating may comprise Eposide acrylic resin together with poly-functional groups, or acrylic and hydrocarbon ketone. In use the pad is worn with the UN coating next to the skin, thus trapping perspiration which helps the pad to adhere to the skin keeping it in its desired position.

Figure 2 shows a pad based on the foregoing which is beneficially shaped for the hip or shoulder. The magnetic layer 2 comprises an array of alternate north 5 and south 6 linear poles, some of which are shown schematically in the figure. In this embodiment the poles are aixanged to lie parallel to one another at approximately 45° to a main axis of symmetry 7 of the pad. This arrangement has the advantage that during normal use of the pad on the hip or shoulder for example, the predominant direction of blood flow in vessels proximate to the pad will be across the poles (i.e. at an angle to the poles), rather than along them (i.e. parallel to the poles). In this way the blood is subjected to a varying magnetic field as it flows, providing further benefit. Preferably these are arranged to be between about 3 and about 6 linear poles per cm so that there is optimum penetration of the magnetic field into the body, with 4 to 5 poles per cm being preferred.

The layer 3 of textile material is advantageously aixanged so that the warp and weft of the material are approximately at 45° to axis 7, as this serves to reduce fraying along the major edges of the pad. The layer may be dyed or printed, which may be done for example for aesthetic reasons, or to allow e.g. instructions for use to be printed on the pad itself.

A pad according to the invention may have any suitable thickness and shape for use on a particular area of a human or animal body, and may be provided pre-cut or may be cut into any desired shape as required.

The pad may be used directly on the skin, or over a thin layer of clothing.

In order to improve adherence of the pad to the skin, at least one adhesive region may be provided on the surface of the magnetic layer for removably affixing the pad to an area of skin. This would involve using a skin-safe adhesive which is capable of being washed while substantially rnarntaining its adhesive properties. The adhesive regions could form any pattern as desired, for example isolated patches, strips or the boundary of the pad, or alternatively the whole layer could be covered in adhesive.

The foregoing description is not intended to limit the scope of the invention, and various modifications or changes may be envisaged which fall within the scope of the claims.

Claims

1. Apparatus for therapy comprising a layer of magnetic material having first and second surfaces and a layer of textile material, the layer of magnetic material being bonded at the first surface to the layer of textile material.
2. Apparatus according to claim 1, wherein the magnetic material comprises a powdered magnetic substance loaded into a thermoplastic binder.
3. Apparatus according to claim 2, wherein the binder was calendered into a sheet form and magnetised.
4. Apparatus according to claim 2 or 3, wherein the magnetic substance comprises a feixite.
5. Apparatus according to claim 4, wherein the magnetic substance comprises a strontium- or barium-based ferrite.
6. Apparatus according to any preceding claim wherein the magnetic material comprises an array of alternate north and south parallel linear poles.
7. Apparatus according to claim 6, wherein there are aixanged to be between about 3 and about 6 linear poles per cm.
8. Apparatus according to any preceding claim wherein the layer of magnetic material is bonded to the layer of textile material with adhesive.
9. Apparatus according to any preceding claim which is flexible.
10. Apparatus according to any preceding claim wherein the layer of magnetic material has a thickness in the range from about 0.3mm to about 0.75mm.
11. Apparatus according to any preceding claim comprising a UN coating on the second surface of the layer of magnetic material.
12. Apparatus according to any preceding claim comprising an adhesive region on the second surface of the layer of magnetic material suitable in use for removably affixing said surface to an area of skin.
13. Apparatus according to claim 12 comprising a plurality of such adhesive regions on the second surface of the layer of magnetic material.
14. Apparatus according to any preceding claim wherein the layer of textile material is printed or dyed.
15. The use for therapy of apparatus comprising a layer of magnetic material and a layer of textile material, the layer of magnetic material being bonded to the layer of textile material.
PCT/GB2003/004804 2002-11-13 2003-11-06 Magnetic therapy pad WO2004043539A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB0226539.5 2002-11-13
GB0226539A GB0226539D0 (en) 2002-11-13 2002-11-13 Magnetic therapy pad

Publications (1)

Publication Number Publication Date
WO2004043539A1 true true WO2004043539A1 (en) 2004-05-27

Family

ID=9947793

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2003/004804 WO2004043539A1 (en) 2002-11-13 2003-11-06 Magnetic therapy pad

Country Status (2)

Country Link
GB (1) GB0226539D0 (en)
WO (1) WO2004043539A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4009069A1 (en) * 1990-03-21 1991-09-26 Baermann Horst Rheinmagnet Flat permanent magnet for therapeutic application - has heat-storing layer on side applied to patient's body
US5984856A (en) * 1998-06-29 1999-11-16 Magnum Magnetics Spiral field magnetic product
US6217505B1 (en) * 1995-02-23 2001-04-17 Shinfuji Kogyo Kabushiki Kaisha Medical fabric goods
US6322491B1 (en) * 1992-01-21 2001-11-27 Nu-Magnetics, Inc. Flexible magnetic insole
WO2002056962A1 (en) * 2001-01-19 2002-07-25 W.E.T. Automotive Systems Ag Device for the salutary treatment with magnetic radiation

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4009069A1 (en) * 1990-03-21 1991-09-26 Baermann Horst Rheinmagnet Flat permanent magnet for therapeutic application - has heat-storing layer on side applied to patient's body
US6322491B1 (en) * 1992-01-21 2001-11-27 Nu-Magnetics, Inc. Flexible magnetic insole
US6217505B1 (en) * 1995-02-23 2001-04-17 Shinfuji Kogyo Kabushiki Kaisha Medical fabric goods
US5984856A (en) * 1998-06-29 1999-11-16 Magnum Magnetics Spiral field magnetic product
WO2002056962A1 (en) * 2001-01-19 2002-07-25 W.E.T. Automotive Systems Ag Device for the salutary treatment with magnetic radiation

Also Published As

Publication number Publication date Type
GB0226539D0 (en) 2002-12-18 grant

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