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JP2000189525A - Potential treating device - Google Patents

Potential treating device

Info

Publication number
JP2000189525A
JP2000189525AJP10371378AJP37137898AJP2000189525AJP 2000189525 AJP2000189525 AJP 2000189525AJP 10371378 AJP10371378 AJP 10371378AJP 37137898 AJP37137898 AJP 37137898AJP 2000189525 AJP2000189525 AJP 2000189525A
Authority
JP
Japan
Prior art keywords
output
voltage
treatment
program
therapy device
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.)
Pending
Application number
JP10371378A
Other languages
Japanese (ja)
Inventor
Kazunari Suzuki
一成 鈴木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Marutaka Co Ltd
Original Assignee
Marutaka Co Ltd
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
Application filed by Marutaka Co LtdfiledCriticalMarutaka Co Ltd
Priority to JP10371378ApriorityCriticalpatent/JP2000189525A/en
Publication of JP2000189525ApublicationCriticalpatent/JP2000189525A/en
Pendinglegal-statusCriticalCurrent

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Abstract

PROBLEM TO BE SOLVED: To prevent the deterioration of a treating effect due to getting used to a treatment by automatically changing setting of an outputting pattern, etc., varying an output voltage, a waveform or a voltage depending on time. SOLUTION: The program memory 7 of a control part 1 houses plural treating programs of different varying patterns of voltage and an order control/ setting executing program for executing the plural treating programs in order. Whenever treatment is executed, a treating program different from that of a last time is executed to prevent getting used to the levels and varying patterns of stimulation.

Description

Translated fromJapanese
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】この発明は、人体に高電位を
作用させる電位治療器に関するものであり、特に、出力
の電圧や波形、或いは電圧を時間によって変化させる出
力パターン等を複数種類に変化させることができる電位
治療器に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a potential therapy device for applying a high potential to a human body, and more particularly to a plurality of types of output voltages and waveforms or output patterns for changing the voltage with time. A potential therapy device.

【0002】[0002]

【従来の技術及び発明が解決しようとする課題】人体に
高電位を付与すると、血液中のカルシウムイオンが増大
して、酸性に傾いた血液を弱アルカリ性にする健康増進
効果があることが知られており、この高電位作用を利用
した電位治療器が市販されている。
2. Description of the Related Art It is known that when a high potential is applied to the human body, calcium ions in the blood increase, which has the effect of improving the health of an acid-inclined blood to make it weakly alkaline. A potential therapeutic device utilizing this high potential effect is commercially available.

【0003】電位治療器の使用に際しては、床上に絶縁
シートを敷き、電位治療器の高電圧出力端子の一方の極
とケーブルにて接続した通電シートを絶縁シート上に置
いて、通電シート上に使用者が座すと、通電シートに接
している人体がアースに対して高電位となるものであ
り、例えば3000V,6000V,9000Vの三段
階に電圧を切換えることができるように構成されてい
る。
[0003] When using a potential therapy device, an insulation sheet is laid on the floor, and a current-carrying sheet connected to one pole of a high-voltage output terminal of the potential therapy device by a cable is placed on the insulation sheet. When the user sits down, the human body in contact with the current-carrying sheet has a high potential with respect to the ground, and is configured to be able to switch the voltage between, for example, 3000 V, 6000 V, and 9000 V.

【0004】また、人体は同一の刺激に対しては次第に
慣れるものであって、同一の出力設定で長期間使用する
と刺激に対する感覚が鈍化して治療効果が次第に低下す
るように感じられることがあるが、これを防止するため
に一回の治療サイクル(例えば20分間)中に出力電圧
を自動的に変化させて刺激の度合いに変化を与える複数
種類の出力パターンの治療プログラムを備えた電位治療
器や、出力波形を変更できる機能を備えた電位治療器も
ある。
Further, the human body gradually gets used to the same stimulus, and if the same output is used for a long period of time, the sensation to the stimulus may be reduced and the therapeutic effect may be gradually reduced. However, in order to prevent this, a potential therapeutic device having a plurality of types of output pattern treatment programs for automatically changing the output voltage during one treatment cycle (for example, 20 minutes) to change the degree of stimulation. Also, there is a potential therapy device having a function of changing an output waveform.

【0005】此種の電位治療器は、複数種類の治療プロ
グラムや出力波形を任意に選択できるように構成されて
おり、治療プログラムや出力波形を適宜変更することに
より、刺激に対する慣れを防止できるようにしている。
しかし、治療プログラムや出力波形の設定は使用者に委
ねられているので、設定変更操作を行わなかったり、前
回の設定を失念したりして、前回と同一の設定で使用さ
れる場合が多く、刺激に対する慣れを防止する機能が用
いられないことが多いものである。
[0005] This type of potential therapy device is configured so that a plurality of types of treatment programs and output waveforms can be arbitrarily selected, and by appropriately changing the treatment programs and output waveforms, it is possible to prevent the user from becoming accustomed to stimulation. I have to.
However, since the setting of the treatment program and output waveform is left to the user, it is often used with the same settings as before, without performing the setting change operation or forgetting the previous settings, In many cases, the function of preventing the user from getting used to the stimulus is not used.

【0006】そこで、ある期間またはある治療サイクル
回数を経過したときに、治療プログラムや出力波形の設
定が自動的に変更されるようにして治療効果の低下を防
止するために解決すべき技術的課題が生じてくるのであ
り、本発明は上記課題を解決することを目的とする。
Therefore, a technical problem to be solved in order to prevent a decrease in the therapeutic effect by automatically changing the settings of the therapeutic program and the output waveform when a certain period or a certain number of treatment cycles have elapsed. The present invention aims to solve the above problems.

【0007】[0007]

【課題を解決するための手段】この発明は、上記目的を
達成するために提案するものであり、通電体に高電位を
与え、通電体を介して人体に高電位を作用させる電位治
療器であって、出力の電圧や波形、或いは電圧を時間に
よって変化させる出力パターン等の設定を複数種類に変
化させることができる出力設定機能を備えた電位治療器
において、複数種類の出力設定値または出力パターン設
定値の順番制御手段及び設定実行手段を設けて、或る期
間または或る治療回数ごとに出力設定が自動的に変更さ
れるように構成したことを特徴とする電位治療器を提供
するものである。
SUMMARY OF THE INVENTION The present invention is directed to achieving the above object, and is directed to a potential therapy device for applying a high potential to a current-carrying body and applying a high potential to a human body via the current-carrying body. There are a plurality of types of output set values or output patterns in a potential therapy device having an output setting function capable of changing settings such as output voltage or waveform, or output pattern for changing voltage with time to a plurality of types. There is provided a potential therapy device characterized in that a set value order control means and a setting execution means are provided so that an output setting is automatically changed every certain period or every certain number of treatments. is there.

【0008】[0008]

【発明の実施の形態】以下、この発明の実施の一形態を
図に従って詳述する。図1は電位治療器の回路ブロック
図であり、1は制御部、2は昇圧トランス、3は通電シ
ートである。制御部1は、マイクロコンピュータ4、昇
圧トランス制御回路5、過電流検出回路6、プログラム
メモリ7、書き換え可能な不揮発性メモリ8によって構
成され、昇圧トランス制御回路5と昇圧トランス2の一
次巻線との間に電流を検出するための抵抗器9が直列に
挿入されている。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a circuit block diagram of the electric potential therapy device, wherein 1 is a control unit, 2 is a step-up transformer, and 3 is an energizing sheet. The control unit 1 includes a microcomputer 4, a step-up transformer control circuit 5, an overcurrent detection circuit 6, a program memory 7, and a rewritable nonvolatile memory 8, and includes a step-up transformer control circuit 5 and a primary winding of the step-up transformer 2. , A resistor 9 for detecting a current is inserted in series.

【0009】昇圧トランス2の二次巻線の一端は十数M
オームの抵抗器10を介して一次側回路に接続されてお
り、二次巻線の他端は十数Mオームの抵抗器11を介し
て出力ジャック12に接続されている。出力ジャック1
2に通電シート3のプラグを接続することにより、通電
シート3は高電位となる。
One end of the secondary winding of the step-up transformer 2 is more than ten M
The other end of the secondary winding is connected to an output jack 12 via a resistor 11 of a dozen M ohms via an ohmic resistor 10. Output jack 1
By connecting the plug of the conductive sheet 3 to 2, the conductive sheet 3 becomes high potential.

【0010】マイクロコンピュータ4はプログラムメモ
リ7の治療プログラム領域P1 に格納されている複数の
治療プログラムの一つに基づいて昇圧トランス制御回路
5を制御し、実行したプログラムのナンバーを不揮発性
メモリ8に書込む。
The microcomputer 4 controls the step-up transformer control circuit 5 based on one of a plurality of treatment programs stored in the treatment program area P1 of the program memory 7, and stores the number of the executed program in the nonvolatile memory 8. Write.

【0011】図示は省略するが、電位治療器の操作パネ
ルには、スタートボタン、ストップボタン、タイマーボ
タン、電圧設定ボタン、及び自動コース設定ボタンが備
えられていて、タイマーボタンを押す毎に、治療時間設
定は20分、40分、60分と変化し、電圧設定ボタン
を押す毎に、出力電圧は3000V,6000V,90
00Vと変わる。例えば、時間を20分、電圧を600
0Vに設定してスタートボタンを押せば、6000Vの
出力電圧を20分間継続した後に、自動的に停止する。
Although illustration is omitted, the operation panel of the electric potential treatment device is provided with a start button, a stop button, a timer button, a voltage setting button, and an automatic course setting button. The time setting changes to 20 minutes, 40 minutes, and 60 minutes. Each time the voltage setting button is pressed, the output voltage becomes 3000 V, 6000 V, 90 minutes.
It changes to 00V. For example, a time of 20 minutes and a voltage of 600
If it is set to 0 V and the start button is pressed, the output voltage of 6000 V is continued for 20 minutes and then automatically stopped.

【0012】また、自動コース選択ボタンを押せば、1
サイクル(20分)の間で出力電圧が段階的に変化する
自動コースが実行される。プログラムメモリ7には自動
コースとして,図2に示すように(A)(B)(C)
(D)の4種類の出力パターンの治療プログラムが格納
されている。4種類の治療プログラムはそれぞれ電圧の
変化パターンが異なり、順番制御及び設定実行プログラ
ムP2により実行順番を制御される。即ち、(A)の治療
プログラムの実行時には(A)のナンバーデータを不揮
発性メモリ8に記憶し、実行終了後に再度スタートボタ
ンを押すと、不揮発性メモリ8に記憶されている(A)
の次の順番である(B)の治療プログラムの実行を開始
する。
When the automatic course selection button is pressed, 1
An automatic course in which the output voltage changes stepwise during the cycle (20 minutes) is performed. As shown in FIG. 2, an automatic course is stored in the program memory 7 as shown in FIG.
The treatment programs of the four types of output patterns (D) are stored. The four types of treatment programs have different voltage change patterns, and the order of execution is controlled by the order control and setting execution program P2. That is, when the treatment program of (A) is executed, the number data of (A) is stored in the non-volatile memory 8, and when the start button is pressed again after the execution is completed, the number data of (A) is stored in the non-volatile memory 8.
Then, the execution of the treatment program of (B), which is the next order, is started.

【0013】不揮発性メモリ8に記憶されているナンバ
ーデータは電源を切っても消去されることがなく、自動
コースで治療を行う際は、順番制御及び設定実行プログ
ラムによりその都度前回の治療プログラムとは異なる治
療プログラムが実行され、記憶しているナンバーデータ
を今回の治療プログラムのナンバーデータに書き換え
る。したがって、治療をスタートする都度、(A)
(B)(C)(D)の順で治療プログラムが変わり、刺
激のレベルに対する慣れと刺激の変化パターンに対する
慣れを防止することができる。
The number data stored in the non-volatile memory 8 is not erased even when the power is turned off, and when performing a treatment in an automatic course, the order control and setting execution program each time executes the previous treatment program. Executes a different treatment program, and replaces the stored number data with the number data of the current treatment program. Therefore, every time the treatment is started, (A)
The treatment program is changed in the order of (B), (C), and (D), and it is possible to prevent the accustomed to the stimulus level and the accustomed to the stimulus change pattern.

【0014】また、他の実施形態としては、主電源スイ
ッチを投入した時点で、前回の治療プログラムの次の順
番の治療プログラムが選択されるように構成したり、マ
イクロコンピュータ4のカレンダー機能を利用して、毎
日或いは数日毎に治療プログラムが順番に選択されるよ
うにしてもよく、また、ランダムに選択されるようにし
てもよい。
In another embodiment, when the main power switch is turned on, the next treatment program of the previous treatment program is selected, or the calendar function of the microcomputer 4 is used. Then, the treatment program may be sequentially selected every day or every few days, or may be randomly selected.

【0015】尚、この発明は上記の実施形態に限定する
ものではなく、この発明の技術的範囲内において種々の
改変が可能であり、この発明がそれらの改変されたもの
に及ぶことは当然である。
It should be noted that the present invention is not limited to the above embodiment, and various modifications are possible within the technical scope of the present invention, and it goes without saying that the present invention extends to those modifications. is there.

【0016】[0016]

【発明の効果】以上説明したように、本発明の電位治療
器は、治療を行う都度、あるいは或る期間を経過したと
きに、出力の電圧や波形、或いは電圧を時間によって変
化させる出力パターン等の設定が、人為操作によらず自
動的に変更されるように構成したので、刺激に対する慣
れを防止でき、電位治療器の治療作用を有効に発揮する
ことができる。
As described above, the potential therapy device of the present invention provides an output voltage or waveform, or an output pattern that changes the voltage with time each time a therapy is performed or after a certain period of time. Is automatically changed without manual operation, it is possible to prevent the user from getting used to the stimulus and to effectively exert the therapeutic effect of the electric potential therapy device.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の実施の一形態を示し、電位治療器の回
路ブロック図。
FIG. 1 shows an embodiment of the present invention and is a circuit block diagram of a potential therapy device.

【図2】(A)(B)(C)(D)はそれぞれ治療プロ
グラムの電圧変化パターンを示すタイミングチャート。
FIGS. 2A, 2B, 2C, and 2D are timing charts each showing a voltage change pattern of a treatment program;

【符号の説明】[Explanation of symbols]

1 制御部 2 昇圧トランス 3 通電シート 4 マイクロコンピュータ 7 プログラムメモリ 8 不揮発性メモリ REFERENCE SIGNS LIST 1 control unit 2 step-up transformer 3 energizing sheet 4 microcomputer 7 program memory 8 non-volatile memory

Claims (1)

Translated fromJapanese
【特許請求の範囲】[Claims]【請求項1】 通電体に高電位を与え、通電体を介して
人体に高電位を作用させる電位治療器であって、出力の
電圧や波形、或いは電圧を時間によって変化させる出力
パターン等の設定を複数種類に変化させることができる
出力設定機能を備えた電位治療器において、複数種類の
出力設定値または出力パターン設定値の順番制御手段及
び設定実行手段を設けて、或る期間または或る治療回数
ごとに出力設定が自動的に変更されるように構成したこ
とを特徴とする電位治療器。
1. A potential therapy device for applying a high potential to a current-carrying body and applying a high potential to a human body via the current-carrying body, wherein an output voltage, a waveform, or an output pattern for changing the voltage with time is set. In a potential therapy device having an output setting function capable of changing a plurality of types, an order control means and a setting execution means of a plurality of types of output set values or output pattern set values are provided, and a certain period or a certain treatment is provided. An electric potential therapy device characterized in that the output setting is automatically changed every number of times.
JP10371378A1998-12-251998-12-25Potential treating devicePendingJP2000189525A (en)

Priority Applications (1)

Application NumberPriority DateFiling DateTitle
JP10371378AJP2000189525A (en)1998-12-251998-12-25Potential treating device

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
JP10371378AJP2000189525A (en)1998-12-251998-12-25Potential treating device

Publications (1)

Publication NumberPublication Date
JP2000189525Atrue JP2000189525A (en)2000-07-11

Family

ID=18498612

Family Applications (1)

Application NumberTitlePriority DateFiling Date
JP10371378APendingJP2000189525A (en)1998-12-251998-12-25Potential treating device

Country Status (1)

CountryLink
JP (1)JP2000189525A (en)

Cited By (22)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
WO2004030754A1 (en)*2002-10-012004-04-15Japan Electronics Science R & D Co., Ltd.Potential therapeutic device
JP2006346301A (en)*2005-06-172006-12-28Marutaka Techno:KkPotential treatment apparatus
JP2012130521A (en)*2010-12-212012-07-12Bionics:KkElectric potential therapeutic apparatus
JP2012217664A (en)*2011-04-112012-11-12Oyo Denshi Kogyo KkPotential therapeutic device
JP2015100474A (en)*2013-11-222015-06-04コスモヘルス株式会社Potential therapeutic apparatus and program for potential therapeutic apparatus
JP2017148083A (en)*2016-02-222017-08-31テクノエレメント株式会社Potential therapeutic instrument and control method of the same
JP2022043297A (en)*2016-03-222022-03-15パワードット,インコーポレイテッド Compact muscle stimulator
US11857481B2 (en)2022-02-282024-01-02Therabody, Inc.System for electrical connection of massage attachment to percussive therapy device
US11890253B2 (en)2018-12-262024-02-06Therabody, Inc.Percussive therapy device with interchangeable modules
US11896545B2 (en)2019-05-072024-02-13Therabody, Inc.Vibrating garment assembly
US11940163B1 (en)2023-07-312024-03-26Therabody, Inc.Portable temperature controlled device
US11957635B2 (en)2015-06-202024-04-16Therabody, Inc.Percussive therapy device with variable amplitude
US11957638B2 (en)2021-04-012024-04-16Therabody, Inc.Suction assembly
US11998504B2 (en)2019-05-072024-06-04Therabody, Inc.Chair including percussive massage therapy
US12017009B2 (en)2022-06-142024-06-25Therabody, Inc.System and method for altering user mind-body states through external stimuli
US12016818B2 (en)2020-06-292024-06-25Therabody, Inc.Vibrating therapy system and device
US12023294B2 (en)2019-05-072024-07-02Therabody, Inc.Percussive massage device with force meter
US12064387B2 (en)2018-12-262024-08-20Therabody, Inc.Percussive therapy device with electrically connected attachment
US12161599B1 (en)2023-09-212024-12-10Therabody, Inc.Systems, methods, and devices for percussive massage therapy
US12263312B2 (en)2022-04-272025-04-01Therabody, Inc.Facial wearable device and methods for providing external stimuli using the same
US12295900B1 (en)2022-12-212025-05-13Therabody, Inc.Systems, methods, and devices for percussive massage therapy with voice activation
US12402686B2 (en)2023-06-142025-09-02Therabody, Inc.Articles of footwear having therapeutic assemblies

Cited By (30)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
WO2004030754A1 (en)*2002-10-012004-04-15Japan Electronics Science R & D Co., Ltd.Potential therapeutic device
JP2006346301A (en)*2005-06-172006-12-28Marutaka Techno:KkPotential treatment apparatus
JP2012130521A (en)*2010-12-212012-07-12Bionics:KkElectric potential therapeutic apparatus
JP2012217664A (en)*2011-04-112012-11-12Oyo Denshi Kogyo KkPotential therapeutic device
JP2015100474A (en)*2013-11-222015-06-04コスモヘルス株式会社Potential therapeutic apparatus and program for potential therapeutic apparatus
US11957635B2 (en)2015-06-202024-04-16Therabody, Inc.Percussive therapy device with variable amplitude
JP2017148083A (en)*2016-02-222017-08-31テクノエレメント株式会社Potential therapeutic instrument and control method of the same
JP2024029006A (en)*2016-03-222024-03-05パワードット,インコーポレイテッド compact muscle stimulator
JP7612822B2 (en)2016-03-222025-01-14パワードット,インコーポレイテッド Compact muscle stimulator
JP2022043297A (en)*2016-03-222022-03-15パワードット,インコーポレイテッド Compact muscle stimulator
US11890253B2 (en)2018-12-262024-02-06Therabody, Inc.Percussive therapy device with interchangeable modules
US12396919B2 (en)2018-12-262025-08-26Therabody, Inc.Percussive therapy device with electrically connected attachment
US12064387B2 (en)2018-12-262024-08-20Therabody, Inc.Percussive therapy device with electrically connected attachment
US12329711B2 (en)2018-12-262025-06-17Therabody, Inc.Percussive therapy device with interchangeable modules
US11896545B2 (en)2019-05-072024-02-13Therabody, Inc.Vibrating garment assembly
US11998504B2 (en)2019-05-072024-06-04Therabody, Inc.Chair including percussive massage therapy
US12023294B2 (en)2019-05-072024-07-02Therabody, Inc.Percussive massage device with force meter
US12427084B2 (en)2020-06-292025-09-30Therabody, Inc.Vibrating therapy system and device
US12016818B2 (en)2020-06-292024-06-25Therabody, Inc.Vibrating therapy system and device
US11957638B2 (en)2021-04-012024-04-16Therabody, Inc.Suction assembly
US11857481B2 (en)2022-02-282024-01-02Therabody, Inc.System for electrical connection of massage attachment to percussive therapy device
US12263312B2 (en)2022-04-272025-04-01Therabody, Inc.Facial wearable device and methods for providing external stimuli using the same
US12017009B2 (en)2022-06-142024-06-25Therabody, Inc.System and method for altering user mind-body states through external stimuli
US12295900B1 (en)2022-12-212025-05-13Therabody, Inc.Systems, methods, and devices for percussive massage therapy with voice activation
US12402686B2 (en)2023-06-142025-09-02Therabody, Inc.Articles of footwear having therapeutic assemblies
US12416418B2 (en)2023-07-312025-09-16Therabody, Inc.Portable temperature controlled device
US11940163B1 (en)2023-07-312024-03-26Therabody, Inc.Portable temperature controlled device
US12285379B2 (en)2023-09-212025-04-29Therabody, Inc.Systems, methods, and devices for percussive massage therapy
US12290486B2 (en)2023-09-212025-05-06Therabody, Inc.Systems, methods, and devices for percussive massage therapy
US12161599B1 (en)2023-09-212024-12-10Therabody, Inc.Systems, methods, and devices for percussive massage therapy

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