CA1302507C - Magnetic field mat - Google Patents
Magnetic field matInfo
- Publication number
- CA1302507C CA1302507C CA000532955A CA532955A CA1302507C CA 1302507 C CA1302507 C CA 1302507C CA 000532955 A CA000532955 A CA 000532955A CA 532955 A CA532955 A CA 532955A CA 1302507 C CA1302507 C CA 1302507C
- Authority
- CA
- Canada
- Prior art keywords
- magnetic field
- coil
- mat
- mat according
- wire
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N2/00—Magnetotherapy
- A61N2/02—Magnetotherapy using magnetic fields produced by coils, including single turn loops or electromagnets
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Magnetic Treatment Devices (AREA)
- Mattresses And Other Support Structures For Chairs And Beds (AREA)
Abstract
ABSTRACT
Magnetic Field Mat A mat for use as lying, sitting or leaning mat comprising a filling which is surrounded by a cover and consists of at least one cushion layer consisting of foam rubber or foam material and a wire winding which is arranged to form a magnetic field coil (3) to generate an alternating field and which is disposed in or beneath a cusion main layer (2) consisting of foam material or foam rubber.
(Figure 1)
Magnetic Field Mat A mat for use as lying, sitting or leaning mat comprising a filling which is surrounded by a cover and consists of at least one cushion layer consisting of foam rubber or foam material and a wire winding which is arranged to form a magnetic field coil (3) to generate an alternating field and which is disposed in or beneath a cusion main layer (2) consisting of foam material or foam rubber.
(Figure 1)
Description
s~
Magnetic Pield Mat The invention relates to a mat for use as lying, sitting or leaning mat comprising a filling which is surrounded by a cover and consists of at least one cushion layer consisting of foam rubber or foam material and an insert of metal.
DE-OS 3,333,707 discloses a mattress underlay in which the insert consists of an aluminium foil. Said aluminium foil is accommodated between two foam material layers and is in-tended firstly to provide thermal insulation and secondly counteract other earth radiation.
DE-OS 3,141,668 discloses a mat serving as insulating under-lay in which on a polyethylene foam layer a polyethyl~ne sheet on which aluminium is vapour deposited is applied as uppermost layer, Such a mat also serves for thermal insu-lation and for improved air circulation the aluminium layer is made porous.
These known mats thus act only as shields either against heat or against earth radiation and do not themselves have any active possibility of influencing humans.
It is known that automating fields and electromagnetic waves have a substantial influence on the human body and fluctu ations for example of atmospheric electricity have biologi-cal effects on human beings. In medicine the thermal effect of high-~requency currents is utilized for therapeutic purposes and research has shown that healing successes can be achieved wi~h alternating fields. The symptoms for apply-ing instruments based on the aforementioned knowledge are all typical serotonine irritations. It is known that ~...................................... .
~ 36~
successes have been achieved with ~he following frequencies.
1. Frequency ~.5 Hz: acute inflammations.
Magnetic Pield Mat The invention relates to a mat for use as lying, sitting or leaning mat comprising a filling which is surrounded by a cover and consists of at least one cushion layer consisting of foam rubber or foam material and an insert of metal.
DE-OS 3,333,707 discloses a mattress underlay in which the insert consists of an aluminium foil. Said aluminium foil is accommodated between two foam material layers and is in-tended firstly to provide thermal insulation and secondly counteract other earth radiation.
DE-OS 3,141,668 discloses a mat serving as insulating under-lay in which on a polyethylene foam layer a polyethyl~ne sheet on which aluminium is vapour deposited is applied as uppermost layer, Such a mat also serves for thermal insu-lation and for improved air circulation the aluminium layer is made porous.
These known mats thus act only as shields either against heat or against earth radiation and do not themselves have any active possibility of influencing humans.
It is known that automating fields and electromagnetic waves have a substantial influence on the human body and fluctu ations for example of atmospheric electricity have biologi-cal effects on human beings. In medicine the thermal effect of high-~requency currents is utilized for therapeutic purposes and research has shown that healing successes can be achieved wi~h alternating fields. The symptoms for apply-ing instruments based on the aforementioned knowledge are all typical serotonine irritations. It is known that ~...................................... .
~ 36~
successes have been achieved with ~he following frequencies.
1. Frequency ~.5 Hz: acute inflammations.
2. Frequency 5 - 7 Hz: slight irritations ~nervousn~ss, sleep disturbances, hypertony, tachycardia, vegetative dystony).
3. Frequency 10 - 14 Hz: severe irritations, migrane, sea-sickness, travelling sickness, scar pain, phantom-limb pain, r~matic pain, arthroses, allergic reactions, asthma.
This setting generates body-similar "Schumann waves~ and thus has a slight soporific effect because it prevents serotonine liberation.
The effect of such alternating magnetic fields is explained as follows: in diseases the bioelectrical processes in the body are disturbed. They either take place too rapidly or are retarded. These bioelectric processes in the body can either be activated or retarded to return them to normal magnitude. The electric alternating field generates in the body eddy currents which cause the electrical charges in the cell membranes to vary. The stimulations thus generated have a normalizing effect on the vegetative nervous system and thus also on the target organs. Observations have shown that depending on the frequency for example blood vessels expand or contract. The magnetic field theory is known in particular in clinical medicine for promoting healing of bone fractures or blood vessels.
-Therapeutical successes have also been statistically provedfor psychosomatic complaints and rheumatic sufferers have been considerabl~ helped.
The known devices and instruments are however substantially ~3(~ 5~'7 stationary equipment and therapy always requires a certain time during which the patient cannot carry out his normal occupation.
The invention is therefore based on the problem of providing a device which makes it possible to apply the alternating fields when the body is usually at rest.
~ccording to the invention in a mat of the type set forth in the preamble the insert is a wire winding which is arranged to form a magnetic field coil to generate an alter-nating field and which is disposed in or beneath a cushion main layer. This cushion main layer may be a commercially available foam material or a foam rubber, In particular, this material may be latex.
Depending on the field of use it may be advantageous for the coil wire of the magnetic field coil to be arranged meander-like or spiral-like. In the former case a relatively homogeneous magnetic field is obtained over a relatively large area and in the latter case a locally more concentrated magnetic field. It may be favourable for a plurality of magnetic field coils independent of each other to be pro-vided in a mat for generating locally different magnetic fields.
It may be advantageous for the coil wire of the various magnetic field coils to have different thicknesses to gener-ate the different magnetic fields.
It is advantageous for the coil wire to consist of at least 0.25 mm thick sheathed copper~ wire. Favourable results are obtained when in the magnetic field coil the respective distance from one coil wire to the other is between 5 cm and 20 cm, preferably 6 cm.
A particularly high use capacity can be obtained if the free ends of the coil wire are connected to a magnetic field in the pulse generator and the latter can be set to the desired frequency. The frequency may expediently be between 2 to 20 Hz.
The magnetic field pulse generator usually comprises an on-off switch, a test switch with light-emitting diode, a rotary controller for fixing the fre~uency and an output for a jack plug. It is usually operated by a battery but adapters may also be provided for alternating-current connection.
The pulse width is usually 50 microseconds, the current con-sumption without LED at 10 Hz being about 0.05 mA and with LED during the test about 2 mA. As battery a 9 V block battery is ~sed which generates at the output a voltage of about 8 - 9 V.
In an advantageous embodiment of the mat the foam material main layer may be provided on one of its sides, referred to as cut side, with incisions which are disposed in the de-sired coil form and in which the coil wire is embedded. This step makes it unnecessary to provide special securing meas-ures such as adhering the wire to the foam material main layer.
It may be expedient for the cut side of the foam material main layer to be covered by a top layer. The top layer is advantageously stuck Qr sewn at least at specific poin~s on the cut side to the foam material main layer so that even under relatively highi displacement load, for example fold-ing, the position of the coil wires is always fixed and the wires cannot be felt during use. The mat according to the invention may be used both as m~tress underlay in a bed or as direct mattress for a person to lie on. Small embodiments `` ~L3~25~7 are also possible in which the mat has only the size of a head or seat cushion so that the therapy can also be carried out locally limited. Also, the mat according to the in-vention may be worked into seat upholstery or seat covers so that for example a desired therapy can also be carried out during an automobile journey and it is pointed out in this respect that with proper use allertness and perception for traffic happenings is increased, Hereinafter the invention will be explained in detail with reference to the examples of embodiment illustrated in the drawings, wherein:
Fig. 1 is a perspective view of a mat according to the innovation partially in section and partially with broken-away regions, Fig. 2 is a schematic illustration of a magnetic field coil arrangement as used in the mat according to the invention, Fig. 3 is a further embodiment of a magnetic field coil arrangement according to the invention, Fig. 4 is a schematic view of various magnetic field coil arrangements in a mat, Fig. 5 is a perspective schematic view of a magnetic field pulse generator and Fig. 6 is a schematic illustration of a circuit for the magnetic field pulse generator of Fig. 5.
Figure 1 shows in perspective view a magnetic field mat 1 in section. The mat 1 comprises as filling a ~oam material 3~1~Sa~'7 main layer 2 and top layer 5. ~oth layers are covered by an envelope or cover 6 which may be impregnated and dirt-repellent. The cover, the foam material main layer and the top layer are sewn together by means of a seam 6' running along the edge.
In the foam material main layer 2 incisions 7 are provided whose geometrical array corresponds to a desired magnetic field coil arrangement, cf. ~igures 2 and 3.
In the incisions 7 whose depth corresponds to about half the thickness of the foam material main layer a coil wire 4 is continuously laid so that a magnetic field coil configuration results corresponding to the pattern of the incisions as shown for example in Figures 2 and 3 or 4. In the embodi-ment illustrated in Fig. 2 the coil wire 4 is arranged meander-like, the respective ends of the coil wire being united in a connector 9 which is provided in a corresponding socket or jack in a magnetic field pulse generator (cf.
Fig. 5).
The mat 1 may be dimensioned so that it can be placed as normal mattress or mattress underlay in beds. Smaller di-mensions are also possible however, for example in the form of a seat cushion, a backrest or embodiments which can be used as covers for automobile seats or appropriately adap-ted for example in wheel-chairs.
In the embodiment illustrated in Fig. 3 in which the magnetic field coil 3' is wouna substantially spiral~like the end disposed in the interior of the spiral can be shielded with an insulation 10 to avoid disturbing a built-up magnetic field on transition to the outer edge.
~3~25~
The example of embodiment illustrated in Fig. 4 shows a com-bination of various magnetic field coil arrangements in a mat. Thus, in the example of embodiment illustrated in the upper region the magnetic field coil 3 is made meander-like whilst in the lower region two magnetic field coils 3' of spiral configuration are disposed adjacent each other. In this embo~iment as well the inner end is shielded from the magnetic field coil. The exact configuration of the spirals can deviate from the configuration illustrated, for example it is possible to make the spiral form not with corners as illustrated but oval or uniformly gradually curved.
Also, the point a~ which the spiral terminates in the in-terior or starts at the exterior is not fixed by the example illustrated and in each case the optimum form may be chosen.
The coil wire generally has a thickness of at least 0.25 mm and consists of a sheathed copper wire. It is however also possible to give the coil wire 4 a different thickness de-pending on the nature of the magnetic field coil 3 or 3'.
The coil wire 4 is formed to a magnetic field coil 3 or 3' of the configuration illustrated usually such that the spac-ing from one coil wire 4 to the other is about 6 cm. In particular fields of use the spacing may be less but it may also be greater.
Due to the high coefficient of friction between the material of the foam material main layer and the sheathing of the copper wire a reliable arresting of the wire in the incisions is ensured, However, to prevent the coil wire 4 coming out of the incisions 7 even under higher stresses on the cut face 8 of the foam material main layer 2 a top layer 5 is disposed which is fixedly connected to the foam material main layer 2 at least at specific points, This connection can be done by sewing, for example by quilt stitches or seams, or alternatively by a bilateral adhesive tape.
.
3~251D~
Figure 5 shows schematically in perspective a magnetic field pulse generator 11 whose circuit is shown schematically in Figure 6. With the pulse generator 11 short pulses of variable frequency between about 2 and 20 Hz can be sent into the coil 3, 3' which is embedded in the mat 1. The pulse generator consists in particular of blocks shown in dot-dash line, that is a voltage source 14, an oscillator 15 of selectable frequency, a frequency reducer 16 and a power output stage 17.
The voltage source 14 comprises a small battery 18 whose plus terminal is connected to a resistor 1~ and a protective diode 20 whilst an ON/OFF switch 21 is connected to the minus terminal. For smoothing the battery current a capaci-tor 22 is also provided which is connected in parallel be-tween the output of the diode 20 and the switch 21.
In the voltage source 14 a test circuit is also provided which is a series circuit of a light-emitting diode 23, a resistor 24 and a switch 25 and is connected between the positive output of the voltage source and the negative ter-minal of the battery 18. When the switch 25 is closed the light-emitting diode 23 lights up providin~ the battery 18 still has ~dequate voltage. The switch 25 is p~eferably a pusbutton switch.
The positive output of the voltage source 14 is connected to the frequency-variable oscillator 15 which is of usual commercial type and as a rule consists of a plurality of NAND members, in this case three NAN~ members 26, 27 and 28, the output of the second NAND member being fed back via an RC member comprising a capacitor 29 and a potentiometer 30 to the second input of the first NAN~ member 26. The po-tentiometer 30 serves to set the frequency so that at the ~302~
output of the last NAND member a variable high freguency appears. The output of said NAND member is applied to the clock input CL of a counter 31 and the first input of an A~D member 32. The counter 31 is for example a ring counter having a predetermined number of count stages whose signal output Q furnishes an overflow pulse to the second input of the AND member 32 as soon as the number of pulses emitted by the oscillator 15 corresponds to the number of count stages. When this happens the AND gate 32 opens and trans-fers a pulse via a coupling circuit comprising a resistor 33 and a capacitor 34 to the base of a power transistor 35 which is operated in emitter connection. The collector of the transistor is connected to one output terminal 36 and the plus terminal of the battery to another terminal 37 and these are united to form a connector. Into said connector a corresponding plug-connector of the coil 3, 3' is then inserted.
The pulses introduced with such a circuit into the coil 3, 3' are for example set to a pulse duration of 50 ~sec; the pulse width depends on the value of the capacitor 29. The current consumption of the pulse generator is very low and at 10 Hz is about 0.1 mA so that a 9 volt block battery can supply the coil 3, 3' for two or three months.
The current consumption of the pulse generator in test oper-ation, i,e. with the switch 25 closed, is about 4 mA.
The coil 12 preferably comprises a sheathed copper wire having a diameter of 0.25 mm; the windings of the coils are spaced about 6 cm from each other.
With the pulse generator described proceeding from a magnet-ic induction of 100~ at at distance of 5 cm from the coil plane, at a distance of 10 cm 65% of the magnetic induction ~3~ 7 was still measured; at a distance of 15 cm, 20 cm and 25 cm respectively the magnetic induction was still 50%, 33% and 20% of the magnetic induction at a distance of 5 cm.
When using another voltage source corresponding electrical components are provided so that for example the mat in the motor vehicle can be operated with the battery installed therein when preceded by corresponding voltage-reducing resistors.
... .
This setting generates body-similar "Schumann waves~ and thus has a slight soporific effect because it prevents serotonine liberation.
The effect of such alternating magnetic fields is explained as follows: in diseases the bioelectrical processes in the body are disturbed. They either take place too rapidly or are retarded. These bioelectric processes in the body can either be activated or retarded to return them to normal magnitude. The electric alternating field generates in the body eddy currents which cause the electrical charges in the cell membranes to vary. The stimulations thus generated have a normalizing effect on the vegetative nervous system and thus also on the target organs. Observations have shown that depending on the frequency for example blood vessels expand or contract. The magnetic field theory is known in particular in clinical medicine for promoting healing of bone fractures or blood vessels.
-Therapeutical successes have also been statistically provedfor psychosomatic complaints and rheumatic sufferers have been considerabl~ helped.
The known devices and instruments are however substantially ~3(~ 5~'7 stationary equipment and therapy always requires a certain time during which the patient cannot carry out his normal occupation.
The invention is therefore based on the problem of providing a device which makes it possible to apply the alternating fields when the body is usually at rest.
~ccording to the invention in a mat of the type set forth in the preamble the insert is a wire winding which is arranged to form a magnetic field coil to generate an alter-nating field and which is disposed in or beneath a cushion main layer. This cushion main layer may be a commercially available foam material or a foam rubber, In particular, this material may be latex.
Depending on the field of use it may be advantageous for the coil wire of the magnetic field coil to be arranged meander-like or spiral-like. In the former case a relatively homogeneous magnetic field is obtained over a relatively large area and in the latter case a locally more concentrated magnetic field. It may be favourable for a plurality of magnetic field coils independent of each other to be pro-vided in a mat for generating locally different magnetic fields.
It may be advantageous for the coil wire of the various magnetic field coils to have different thicknesses to gener-ate the different magnetic fields.
It is advantageous for the coil wire to consist of at least 0.25 mm thick sheathed copper~ wire. Favourable results are obtained when in the magnetic field coil the respective distance from one coil wire to the other is between 5 cm and 20 cm, preferably 6 cm.
A particularly high use capacity can be obtained if the free ends of the coil wire are connected to a magnetic field in the pulse generator and the latter can be set to the desired frequency. The frequency may expediently be between 2 to 20 Hz.
The magnetic field pulse generator usually comprises an on-off switch, a test switch with light-emitting diode, a rotary controller for fixing the fre~uency and an output for a jack plug. It is usually operated by a battery but adapters may also be provided for alternating-current connection.
The pulse width is usually 50 microseconds, the current con-sumption without LED at 10 Hz being about 0.05 mA and with LED during the test about 2 mA. As battery a 9 V block battery is ~sed which generates at the output a voltage of about 8 - 9 V.
In an advantageous embodiment of the mat the foam material main layer may be provided on one of its sides, referred to as cut side, with incisions which are disposed in the de-sired coil form and in which the coil wire is embedded. This step makes it unnecessary to provide special securing meas-ures such as adhering the wire to the foam material main layer.
It may be expedient for the cut side of the foam material main layer to be covered by a top layer. The top layer is advantageously stuck Qr sewn at least at specific poin~s on the cut side to the foam material main layer so that even under relatively highi displacement load, for example fold-ing, the position of the coil wires is always fixed and the wires cannot be felt during use. The mat according to the invention may be used both as m~tress underlay in a bed or as direct mattress for a person to lie on. Small embodiments `` ~L3~25~7 are also possible in which the mat has only the size of a head or seat cushion so that the therapy can also be carried out locally limited. Also, the mat according to the in-vention may be worked into seat upholstery or seat covers so that for example a desired therapy can also be carried out during an automobile journey and it is pointed out in this respect that with proper use allertness and perception for traffic happenings is increased, Hereinafter the invention will be explained in detail with reference to the examples of embodiment illustrated in the drawings, wherein:
Fig. 1 is a perspective view of a mat according to the innovation partially in section and partially with broken-away regions, Fig. 2 is a schematic illustration of a magnetic field coil arrangement as used in the mat according to the invention, Fig. 3 is a further embodiment of a magnetic field coil arrangement according to the invention, Fig. 4 is a schematic view of various magnetic field coil arrangements in a mat, Fig. 5 is a perspective schematic view of a magnetic field pulse generator and Fig. 6 is a schematic illustration of a circuit for the magnetic field pulse generator of Fig. 5.
Figure 1 shows in perspective view a magnetic field mat 1 in section. The mat 1 comprises as filling a ~oam material 3~1~Sa~'7 main layer 2 and top layer 5. ~oth layers are covered by an envelope or cover 6 which may be impregnated and dirt-repellent. The cover, the foam material main layer and the top layer are sewn together by means of a seam 6' running along the edge.
In the foam material main layer 2 incisions 7 are provided whose geometrical array corresponds to a desired magnetic field coil arrangement, cf. ~igures 2 and 3.
In the incisions 7 whose depth corresponds to about half the thickness of the foam material main layer a coil wire 4 is continuously laid so that a magnetic field coil configuration results corresponding to the pattern of the incisions as shown for example in Figures 2 and 3 or 4. In the embodi-ment illustrated in Fig. 2 the coil wire 4 is arranged meander-like, the respective ends of the coil wire being united in a connector 9 which is provided in a corresponding socket or jack in a magnetic field pulse generator (cf.
Fig. 5).
The mat 1 may be dimensioned so that it can be placed as normal mattress or mattress underlay in beds. Smaller di-mensions are also possible however, for example in the form of a seat cushion, a backrest or embodiments which can be used as covers for automobile seats or appropriately adap-ted for example in wheel-chairs.
In the embodiment illustrated in Fig. 3 in which the magnetic field coil 3' is wouna substantially spiral~like the end disposed in the interior of the spiral can be shielded with an insulation 10 to avoid disturbing a built-up magnetic field on transition to the outer edge.
~3~25~
The example of embodiment illustrated in Fig. 4 shows a com-bination of various magnetic field coil arrangements in a mat. Thus, in the example of embodiment illustrated in the upper region the magnetic field coil 3 is made meander-like whilst in the lower region two magnetic field coils 3' of spiral configuration are disposed adjacent each other. In this embo~iment as well the inner end is shielded from the magnetic field coil. The exact configuration of the spirals can deviate from the configuration illustrated, for example it is possible to make the spiral form not with corners as illustrated but oval or uniformly gradually curved.
Also, the point a~ which the spiral terminates in the in-terior or starts at the exterior is not fixed by the example illustrated and in each case the optimum form may be chosen.
The coil wire generally has a thickness of at least 0.25 mm and consists of a sheathed copper wire. It is however also possible to give the coil wire 4 a different thickness de-pending on the nature of the magnetic field coil 3 or 3'.
The coil wire 4 is formed to a magnetic field coil 3 or 3' of the configuration illustrated usually such that the spac-ing from one coil wire 4 to the other is about 6 cm. In particular fields of use the spacing may be less but it may also be greater.
Due to the high coefficient of friction between the material of the foam material main layer and the sheathing of the copper wire a reliable arresting of the wire in the incisions is ensured, However, to prevent the coil wire 4 coming out of the incisions 7 even under higher stresses on the cut face 8 of the foam material main layer 2 a top layer 5 is disposed which is fixedly connected to the foam material main layer 2 at least at specific points, This connection can be done by sewing, for example by quilt stitches or seams, or alternatively by a bilateral adhesive tape.
.
3~251D~
Figure 5 shows schematically in perspective a magnetic field pulse generator 11 whose circuit is shown schematically in Figure 6. With the pulse generator 11 short pulses of variable frequency between about 2 and 20 Hz can be sent into the coil 3, 3' which is embedded in the mat 1. The pulse generator consists in particular of blocks shown in dot-dash line, that is a voltage source 14, an oscillator 15 of selectable frequency, a frequency reducer 16 and a power output stage 17.
The voltage source 14 comprises a small battery 18 whose plus terminal is connected to a resistor 1~ and a protective diode 20 whilst an ON/OFF switch 21 is connected to the minus terminal. For smoothing the battery current a capaci-tor 22 is also provided which is connected in parallel be-tween the output of the diode 20 and the switch 21.
In the voltage source 14 a test circuit is also provided which is a series circuit of a light-emitting diode 23, a resistor 24 and a switch 25 and is connected between the positive output of the voltage source and the negative ter-minal of the battery 18. When the switch 25 is closed the light-emitting diode 23 lights up providin~ the battery 18 still has ~dequate voltage. The switch 25 is p~eferably a pusbutton switch.
The positive output of the voltage source 14 is connected to the frequency-variable oscillator 15 which is of usual commercial type and as a rule consists of a plurality of NAND members, in this case three NAN~ members 26, 27 and 28, the output of the second NAND member being fed back via an RC member comprising a capacitor 29 and a potentiometer 30 to the second input of the first NAN~ member 26. The po-tentiometer 30 serves to set the frequency so that at the ~302~
output of the last NAND member a variable high freguency appears. The output of said NAND member is applied to the clock input CL of a counter 31 and the first input of an A~D member 32. The counter 31 is for example a ring counter having a predetermined number of count stages whose signal output Q furnishes an overflow pulse to the second input of the AND member 32 as soon as the number of pulses emitted by the oscillator 15 corresponds to the number of count stages. When this happens the AND gate 32 opens and trans-fers a pulse via a coupling circuit comprising a resistor 33 and a capacitor 34 to the base of a power transistor 35 which is operated in emitter connection. The collector of the transistor is connected to one output terminal 36 and the plus terminal of the battery to another terminal 37 and these are united to form a connector. Into said connector a corresponding plug-connector of the coil 3, 3' is then inserted.
The pulses introduced with such a circuit into the coil 3, 3' are for example set to a pulse duration of 50 ~sec; the pulse width depends on the value of the capacitor 29. The current consumption of the pulse generator is very low and at 10 Hz is about 0.1 mA so that a 9 volt block battery can supply the coil 3, 3' for two or three months.
The current consumption of the pulse generator in test oper-ation, i,e. with the switch 25 closed, is about 4 mA.
The coil 12 preferably comprises a sheathed copper wire having a diameter of 0.25 mm; the windings of the coils are spaced about 6 cm from each other.
With the pulse generator described proceeding from a magnet-ic induction of 100~ at at distance of 5 cm from the coil plane, at a distance of 10 cm 65% of the magnetic induction ~3~ 7 was still measured; at a distance of 15 cm, 20 cm and 25 cm respectively the magnetic induction was still 50%, 33% and 20% of the magnetic induction at a distance of 5 cm.
When using another voltage source corresponding electrical components are provided so that for example the mat in the motor vehicle can be operated with the battery installed therein when preceded by corresponding voltage-reducing resistors.
... .
Claims (12)
1. A mat for use as lying, sitting or leaning mat comprising a filling which is surrounded by a cover and consists of at least one cushion layer consisting of foam rubber or foam material and an insert of metal, wherein the insert is a wire winding which is arranged to form a magnetic field coil to generate an alternating field and which is disposed in or beneath a cushion main layer consisting of foam material or foam rubber.
2. A mat according to claim 1, wherein the coil wire of the magnetic field coil is disposed meander-like.
3. A mat according to claim 1, wherein the coil wire of the magnetic field coil is disposed spiral-like.
4. A mat according to any one of claims 1 to 3, wherein a plurality of magnetic field coils independent of each other is provided in the mat for generating locally different magnetic fields.
5. A mat according to claim 4, wherein the coil wire of the various magnetic field coils has different thicknesses.
6. A mat according to any one of claims 1 to 3 or 5, wherein the coil wire consists of at least 0.25 mm thick sheathed copper wire.
7. A mat according to at least one of claims 1 to 3 or 5, wherein the respective distance of one coil wire from the other in the magnetic field coil is between 5 cm and 25 cm.
8. A mat according to claim 7, wherein the distance between coil wires is about 6 cm.
9. A mat according to at least one of claims 1 to 3, 5 or 8, wherein the free ends of the coil wire are connected to a magnetic field pulse generator.
10. A mat according to at least one of claims 1 to 3, 5 or 8, wherein the cushion main layer is provided on one of its sides, referred to as the cut side, with incisions which are disposed in the desired coil form and in which the coil wire is embedded.
11. A mat according to claim 10, wherein the cut side of the cushion main layer is covered with a top layer.
12. A mat according to claim 11, wherein the top layer is stuck or sewn at least at predetermined points to the cut side of the cushion layer.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE8608438U DE8608438U1 (en) | 1986-03-27 | 1986-03-27 | Magnetic field mat |
| DEG8608438.0 | 1986-03-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1302507C true CA1302507C (en) | 1992-06-02 |
Family
ID=6793120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000532955A Expired - Lifetime CA1302507C (en) | 1986-03-27 | 1987-03-25 | Magnetic field mat |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0239098B1 (en) |
| JP (1) | JPS633872A (en) |
| AT (1) | ATE60909T1 (en) |
| CA (1) | CA1302507C (en) |
| DE (2) | DE8608438U1 (en) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0244784A3 (en) * | 1986-05-09 | 1987-12-16 | Moshe Dr. Rosenthal | Device for electrotherapy |
| DE3828043A1 (en) * | 1987-10-29 | 1989-05-11 | Rudolf Buschky | Medical treatment device |
| IT218620Z2 (en) * | 1987-11-10 | 1992-06-23 | Leorato Maria Grazia | MEDICAL PRESIDIUM FOR ELECTROMAGNETOTHERAPY. |
| DE3807131A1 (en) * | 1988-03-04 | 1989-09-14 | Gerhard Bohn | BED PART |
| DE3834849A1 (en) * | 1988-10-13 | 1990-04-19 | Ridder Heinz | Flexible magnetic field therapy mat |
| DE9001417U1 (en) * | 1990-02-08 | 1990-07-05 | Kaufmann, Walter, 8217 Grassau | Magnetic field underbed with interference suppression |
| DE4004682C2 (en) * | 1990-02-15 | 1996-05-23 | Rudolf Buschky | Magnetic blanket |
| IE62090B1 (en) * | 1990-03-29 | 1994-12-14 | Foley Nolan Darragh | Electromagnetic apparatus for use in therapy |
| DE4108437A1 (en) * | 1991-03-15 | 1992-09-17 | Rudolf Buschky | MAGNETIC BLANKET, PILLOWS, SHEETS OR THE LIKE |
| DE4136374C2 (en) * | 1991-11-05 | 1995-10-19 | Horst Baermann | Magnetotherapeutic arrangement, in particular magnetotherapeutic lower bed |
| DE19615647C2 (en) * | 1996-04-19 | 2000-11-02 | Hartmann Heide | Coil mat and extended coil mat as well as generator for your supply |
| DE19750962A1 (en) * | 1997-11-18 | 1999-05-20 | Schmidt Kai Oliver | Magnetic therapy device |
| DE19803428A1 (en) | 1998-01-29 | 1999-08-05 | Hasse Erwin | Magnetic field blanket |
| DE20221011U1 (en) * | 2002-08-20 | 2005-04-28 | Mugler, Marlies | Spinal column therapy system has alternating magnetic field generating device on or in flexible mat comprising supporting ribs and traction ribs |
| FR2888983B1 (en) * | 2005-07-19 | 2009-05-01 | Beaucamp Philippe Charles Marc | DEVICE PLACING THE USER, DURING HIS SLEEP, IN A MAGNETIC FIELD QUASIALLY INDEPENDENT OF THE LAND MAGNETIC FIELD |
| FR2948226B1 (en) * | 2009-07-16 | 2013-01-25 | Philippe Charles Marceau Beaucamp | DEVICE CREATING A VARIABLE MAGNETIC FIELD VARIABLE AT FREQUENCY EQUIVALENT TO THE RHYTHM DELTA, THEN CONSTANT SO THAT THE USER DORMS AS PLACE ON THE NORTH OR SOUTH MAGNETIC POLE |
| CN103809070B (en) | 2012-11-15 | 2017-11-17 | 施耐德电器工业公司 | The direction earth-fault detecting method and device carried out based on three-phase current change |
| GB2567872B (en) * | 2017-10-27 | 2022-06-15 | The Magstim Company Ltd | Magnetic stimulation coil arrangement |
| DE102019119964B4 (en) * | 2019-07-24 | 2022-09-08 | Surteco Gmbh | Heated surface covering, heated structure, method and covering panel |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR716954A (en) * | 1931-05-12 | 1931-12-30 | Improvements to thermo-magnetic therapeutic devices | |
| FR1371236A (en) * | 1963-06-11 | 1964-09-04 | Method and devices for promoting sleep | |
| DE2623012A1 (en) * | 1976-05-22 | 1977-12-08 | Riedel Erich O | Promotion of sleeping by rhythmic stimuli - using intermittent electrical pulses in induction circuit around sleeping area |
| IT1094302B (en) * | 1978-03-31 | 1985-07-26 | Cogliati Piero | STRUCTURE OF FURNITURE AND SOUNDS ELEMENTS FOR THE RELAXATION OF THE BODY |
| DE3333707A1 (en) * | 1983-02-02 | 1984-08-02 | geb. Kleiner Ella 8940 Memmingen Schnur | Under-mattress |
-
1986
- 1986-03-27 DE DE8608438U patent/DE8608438U1/en not_active Expired
-
1987
- 1987-03-25 EP EP87104421A patent/EP0239098B1/en not_active Expired - Lifetime
- 1987-03-25 DE DE8787104421T patent/DE3768035D1/en not_active Expired - Lifetime
- 1987-03-25 CA CA000532955A patent/CA1302507C/en not_active Expired - Lifetime
- 1987-03-25 AT AT87104421T patent/ATE60909T1/en not_active IP Right Cessation
- 1987-03-27 JP JP62073152A patent/JPS633872A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP0239098A3 (en) | 1987-12-23 |
| EP0239098B1 (en) | 1991-02-20 |
| EP0239098A2 (en) | 1987-09-30 |
| DE3768035D1 (en) | 1991-03-28 |
| DE8608438U1 (en) | 1986-07-31 |
| ATE60909T1 (en) | 1991-03-15 |
| JPS633872A (en) | 1988-01-08 |
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| Date | Code | Title | Description |
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| MKLA | Lapsed |