JP2017006644A - Muscle electrostimulator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a muscle electrostimulator capable of reducing variation of electric stimulation output from each electrode, and improving a freedom degree of arrangement of electrodes.SOLUTION: A muscle electrostimulator 1 is configured so that: an electrode part 30 comprises three or more electrodes 311-313 to which power is supplied from a power supply part 20; a control part 40 for controlling power supply to the electrodes 311-313 has plural terminals 451 and 452 to which voltage having the same polarity is applied respectively; and a lead part 38 for connecting the electrode part 30 and the control part 40 comprises a terminal connection part 383 for connecting the plural terminals 451 and 452 and electrode connection parts 385-387 for connecting the terminal connection part 383 and the electrodes 311-313. Difference between a length of the shortest routes L1-L3 from each of the electrodes 311-313 to the terminals 451 and 452 and an average length of the shortest routes L1-L3 is less than 20% of the average length.SELECTED DRAWING: Figure 6

Description

  The present invention relates to an electrical muscular stimulation device.

  Conventionally, it is widely known that muscle contraction occurs when an electric current is applied to muscle fibers. In particular, it is used for the purpose of strengthening muscles in the medical and sports fields. Specifically, a muscle stimulation method is used in which electricity is applied through an electrode attached to a human body, and the muscle is tensioned and relaxed based on an electrical signal.

  In Patent Document 1, as a muscular electrical stimulation device that stimulates muscles using an electrical signal, a main body unit that includes a power source and has an operation unit, and a sheet-like base material that extends from the main body unit are formed. And a pair of electrodes are attached to the human body, and an electric pulse is applied to the human body to provide muscle stimulation. Then, a gel-like pad having adhesiveness and conductivity is attached to the electrode, and the electrode and the main body are attached to the human body using the adhesiveness of the pad, and the conductivity of the pad is used. Thus, the electrodes and the human body can be energized.

Utility Model Registration No. 3158303

  In the muscular electrical stimulation device disclosed in Patent Document 1, only a pair of electrodes is provided, and it is difficult to efficiently apply electrical stimulation to a plurality of muscles. Therefore, it is conceivable to increase the number of electrodes, but simply increasing the number of electrodes tends to cause variations in the energization distance between the electrodes and the control unit. Due to the variation in the energization distance, the electrical resistance in the lead portion that electrically connects the electrode and the control unit varies from electrode to electrode, and the electrical stimulation output from each electrode is likely to vary. As a result, it becomes difficult to apply electrical stimulation to muscles in a well-balanced manner. On the other hand, if the lead portions are simply made to have the same length in order to suppress variations in the energization distance, the degree of freedom of electrode placement is greatly reduced, which is suitable for applying electrical stimulation to the muscles. It becomes difficult to place in the position.

  The present invention has been made in view of such a background, and intends to provide a muscular electrical stimulation device in which variation in electrical stimulation output from each electrode is reduced and freedom of arrangement of electrodes is improved. Is.

One embodiment of the present invention controls a main body, a power supply housed in the main body, an electrode having a plurality of electrodes to which power is supplied from the power supply, and power supply to the electrode And a control part housed in the main body part, and a lead part for electrically connecting the electrode part and the control part, and a muscle configured to apply electrical stimulation to the human body from the electrode part An electrical stimulator,
The control unit has a plurality of terminals to which voltages of the same polarity are applied,
The lead portion includes a terminal connection portion that connects the plurality of terminals, and an electrode connection portion that connects the terminal connection portion and the plurality of electrodes,
The length of the shortest path from each of the electrodes to the terminal is different from the average length of the shortest path by less than 20% of the average length. It is in.

  In the muscular electrical stimulation device, the length of the shortest path from each of the plurality of electrodes to any of the plurality of terminals is less than 20% of the average length of the average length of the shortest path. ing. Therefore, variation in the energization distance between the electrode and the control unit is unlikely to occur, and variation in electrical resistance in each lead portion that electrically connects the electrode and the control unit can be reduced. Therefore, the electrical stimulation output from each electrode becomes difficult to vary, and the electrical stimulation can be applied to the muscle with a good balance.

  The control unit is provided with a plurality of electrodes to which voltages of the same polarity are applied, and the lead portion is connected to a terminal connection portion for connecting the plurality of terminals, and the terminal connection portion and the electrode are connected to each other. And an electrode connecting portion to be provided. Thereby, the freedom degree of arrangement | positioning of an electrode can be raised, maintaining the said shortest path | route via a lead part short. As a result, it becomes easy to arrange the electrode at a position suitable for applying electrical stimulation to the muscle.

  As described above, according to the present invention, it is possible to provide a muscular electrical stimulation device in which variation in electrical stimulation output from each electrode is reduced and the degree of freedom of electrode placement is improved.

The front view of the muscular electrical stimulation apparatus in Example 1. FIG. The rear view of the muscular electrical stimulation apparatus in Example 1. FIG. The side view of the muscular electrical stimulation apparatus in Example 1. FIG. (A) is the IVa-IVa line position partial expanded view in FIG. 1, (b) is the IVb-IVb line position partial expanded view in FIG. The schematic diagram explaining the usage condition of the muscular electrical stimulation apparatus in Example 1. FIG. The partial back surface enlarged view of the state which removed the 2nd case in Example 1. FIG. FIG. 3 is a schematic diagram for explaining a shortest path in the first embodiment. 1 is a block diagram showing a configuration of a muscle electrical stimulation device in Embodiment 1. FIG. The figure which shows the basic waveform memorize | stored in the muscular electrical stimulation apparatus in Example 1. FIG. The figure which shows the burst wave output from the muscular electrical stimulation apparatus in Example 1. FIG. The figure which shows the voltage change output from the muscular electrical stimulation apparatus in Example 1. FIG. The flowchart explaining the main operation | movement of the muscular electrical stimulation apparatus in Example 1. FIG. The flowchart explaining the 1st interruption process of the muscular electrical stimulation apparatus in Example 1. FIG. The flowchart explaining the 2nd interruption process of the muscular electrical stimulation apparatus in Example 1. FIG. The flowchart explaining the 3rd interruption process of the muscular electrical stimulation apparatus in Example 1. FIG. The block diagram which shows the structure of the muscular electrical stimulation apparatus in the modification 2. FIG. The partial back surface enlarged view of the muscular electrical stimulation apparatus in Example 2. FIG. The front view of the muscular electrical stimulation apparatus in Example 3. FIG. The front perspective view of the muscular electrical stimulation apparatus in Example 3. FIG. The XX-XX line position partial cross section enlarged view in FIG. The XXI-XXI line position cross-section partial enlarged view in FIG. The schematic diagram explaining the state which removes a muscular electrical stimulation apparatus in Example 3. FIG. The front view of the muscular electrical stimulation apparatus in the modification 3. FIG. The rear view of the muscular electrical stimulation apparatus in the modification 3.

  In this specification, “the shortest path from each electrode to a terminal” is defined as follows. First, in the lead portion, a path electrically connected from one electrode to one terminal is extracted. Then, a route imaginary line connecting the centers in the width direction of the lead portions at each position of the extracted route is drawn, and the length of the route imaginary line is set as the length of the route. And the length of each path | route of several terminals is derived | led-out from one electrode, The shortest one is made into the shortest path | route from the said electrode to a terminal.

  The electrodes are preferably arranged so as to be positioned on the same virtual straight line. In this case, like the rectus abdominis muscle, it becomes easy to make the electrode correspond to each of a plurality of sections arranged on a straight line, so that muscles such as the rectus abdominis muscle can be stimulated effectively.

  It is preferable that two terminals having the same polarity are provided. In this case, the shortest path to each electrode can be shortened with a small configuration, and the manufacturing cost can be reduced.

  The electrode part may have three electrodes. In this case, when the rectus abdominis muscle is divided into three sections in the longitudinal direction, the electrodes can be made to correspond to the sections, so that the rectus abdominis muscle can be stimulated more effectively.

  The electrode part may have four electrodes. In this case, when the rectus abdominis muscle is divided into four in the longitudinal direction, the electrodes can be made to correspond to the sections, so that the rectus abdominis muscle can be stimulated more effectively.

  The plurality of terminals, the three or more electrodes, and the lead portion are respectively disposed in both one region and the other region divided by a center line passing through the center of the main body portion, and It is preferable that the electrode arranged in the region and the electrode arranged in the other region are configured to be applied with voltages having different polarities. In this case, if the electrode is attached to the middle of the abdomen so that the central axis is parallel to the height direction of the person, each electrode is likely to be located at a position corresponding to the left and right abdominal rectus muscles. It becomes a muscular electrical stimulation device suitable for stimulating the body.

Example 1
The muscular electrical stimulation apparatus according to the embodiment will be described with reference to FIGS.
As shown in FIGS. 1 and 2, the electrical muscular stimulation device 1 of the present example includes a main body unit 10, a power supply unit 20, an electrode unit 30, a control unit 40, and a lead unit 38 (39). The power supply unit 20 and the control unit 40 are housed in the main body unit 10. The electrode unit 30 includes three or more electrodes 311 to 313 (321 to 323) to which power is supplied from the power supply unit 20. The control unit 40 controls power supply to the electrode unit 30. The lead part 38 (39) electrically connects the electrode part 30 and the control part 40. The muscle electrical stimulation device 1 is configured to apply electrical stimulation from the electrode unit 30 to the human body 2 (see FIG. 5).
The control unit 40 includes a plurality of terminals 451 and 452 (461 and 462) to which voltages having the same polarity are applied.
The lead portion 38 (39) includes a terminal connection portion 383 (393) for connecting a plurality of terminals 451 and 452 (461, 462), a terminal connection portion 383 (393), and electrodes 311 to 313 (321 to 323). Electrode connecting portions 385 to 387 (395 to 397).
The lengths of the shortest paths L1 to L3 (L4 to L6) from the electrodes 311 to 313 (321 to 323) to the terminals 451 and 452 (461 and 462) are averages of the shortest paths L1 to L3 (L4 to L6), respectively. The difference from the length is less than 20% of the average length.

Hereinafter, the electrical muscular stimulation device 1 will be described in detail.
The electrical muscular stimulation device 1 of this example is used by being attached to the abdomen 3 of a human body 2 as shown in FIG. In this example, the longitudinal direction of the height of the human body 2 is the height direction Y. The direction from the central axis 2a of the human body 2 facing the front of the human body 2 and passing through the navel 3a parallel to the height direction Y to the right hand 5a side of the human body 2 is the right direction X1, and The direction toward the left hand 5b side is defined as a left direction X2. The right direction X1 and the left direction X2 are collectively referred to as the left-right direction X.

  As shown in FIG. 1, a main body 10 is provided at the center of the electrical muscular stimulation device 1. As shown in FIG.1 and FIG.3, the main-body part 10 has comprised the substantially disk shape. As shown in FIGS. 4A and 4B, the main body 10 includes a case 11 that houses a power supply unit 20 and a control unit 40, which will be described later, and an exterior of the electrical muscular stimulation device 1 attached to the case 11. An outer shell forming body 12 forming a shell.

  As shown in FIG. 4, the outer shell forming body 12 has a surface 12 b on the side where a substrate 33 described later is provided, and an outer surface 12 a on the opposite side. The outer shell forming body 12 is made of an elastomer and is made of black silicon in this example. As will be described later, the electrode support portion 121 is extended from the outer shell forming body 12 so as to cover the front side surface 33 b of the base material 33. Further, as shown in FIG. 1, a colored region 122 is formed on the outer surface 121 a of the electrode support portion 121. The colored region 122 has a linear shape along the outer edges of electrodes 311 to 313 and 321 to 323 described later. In this example, the coloring part 122 is colored orange.

  As shown in FIGS. 4A and 4B, the case 11 is attached to the first case 111 having a concave shape and the first case 111, and the control unit 40 is accommodated between the first case 111 and the case 11. And a second case 112 that forms the storage portion 13 to be formed. Both the first case 111 and the second case 112 are made of ABS. The ribs 112 a erected along the outer edge of the second case 112 are fitted inside the outer edge 111 a of the first case 111 so that the second case 112 is joined to the first case 111.

  As shown in FIGS. 1 and 4B, the first case 111 is formed with a first cantilever 51 a and a second cantilever 51 b that form a part of an operation unit 50 described later. The first cantilever 51 a and the second cantilever 51 b are formed in a cantilevered state by hollowing out a part of the wall of the first case 111. The first cantilever 51a and the second cantilever 51b are arranged in this order from the upper side to the lower side in the height direction Y.

  As shown in FIGS. 1 and 4B, both cantilevers 51 a and 51 b are covered with the outer shell forming body 12. In the outer shell forming body 12, a symbol “+” protrudes immediately above the first cantilever 51 a, and a symbol “−” protrudes immediately above the second cantilever 51 b. An operation surface 54 that forms part of the portion 50 is formed. Due to the arrangement of both cantilevers 51a and 51b, “+” is on the upper side in the height direction Y, and “−” is on the lower side in the height direction Y, making it easy for the user to operate ergonomically.

  As shown in FIGS. 4A and 4B, the storage unit 13 formed between the first case 111 and the second case 112 has a control unit 40 (see FIG. 8). A substrate 41 is accommodated. The control board 41 is a printed board, and a control circuit is formed on the control board 41 by providing a wiring pattern (not shown), an electronic component 42, and the like. The control board 41 is fixed to the first case 111 via four bosses 116 and screws 115 formed to protrude from the inner surface of the first case 111. The control board 41 is electrically connected to a small surface mount type speaker 43. The drive voltages of the electronic component 42 and the speaker 43 are both 3.0V. Although not shown, the control board 41 is equipped with a booster circuit that boosts the output voltage of the battery 21. Thereby, the power of the battery 21 is boosted to a predetermined voltage (for example, 40 V) and supplied to the electrode unit 30.

  As shown in FIG. 6, the control board 41 as the control unit 40 includes a first terminal group 45 and a second terminal group 46. The first terminal group 45 includes a first terminal 451 and a second terminal 451 connected to a wiring pattern (not shown). A voltage having the same polarity is applied to the first terminal 451 and the second terminal 451. On the other hand, the second terminal group 46 includes a third terminal 461 and a fourth terminal 462 connected to a wiring pattern (not shown). A voltage having the same polarity is applied to the third terminal 461 and the fourth terminal 462. The first terminal group 45 (first terminal 451 and second terminal 451) and the second terminal group 46 (third terminal 461 and fourth terminal 462) are applied with voltages having different polarities. It is configured.

  As shown in FIG. 4B, the first terminal 451 is formed on the control board 41 at a position facing the boss 116. Similarly, the second terminal 452, the third terminal 461, and the fourth terminal 462 are also formed at positions facing the boss 116. A second control portion side connection portion 382 of the first lead portion 38 described later is sandwiched between the boss 116 and the control board 41 and fastened integrally therewith. Thereby, in the control board 41, the 2nd terminal 452 formed in the position where the boss | hub 116 opposes, and the 2nd control part side connection part 382 will be connected. Similarly, a first terminal 451, which will be described later, and a first control part side connection part 381 of the first lead part 38 are connected, and a third terminal 461 and a third control part side connection part 391 of the second lead part 39 are connected. The fourth terminal 462 and the fourth control unit side connection part 392 of the second lead part 39 are connected.

  As shown in FIG. 4B, the storage unit 13 also stores a switch mechanism 52 that forms the operation unit 50. The switch mechanism 52 is a tact switch and includes a switch unit 53 that can be pressed. The switch mechanism 52 is electrically connected to the control unit 40. The switch mechanism 52 is disposed directly below the first cantilever 51a and the second cantilever 51b (see FIG. 1) formed in the first case 111, respectively. As a result, when the first cantilever 51a is pressed from the outside via the operation surface 54 of the outer shell forming body 12 covering the first case 111, the first cantilever 51a in the cantilever state is bent, so that the switch mechanism 52 The switch unit 53 is pressed. When the pressing on the operation surface 54 is released, the first cantilever 51a returns to the original position by the restoring force of the first cantilever 51a in the cantilever state. Similarly, the second cantilever 51b is configured to be pressed and released.

  As shown in FIGS. 4A and 4B, the second case 112 is formed with a battery holding part 14 that holds the battery 21 that constitutes the power supply part 20. As a result, the power supply unit 20 is built in the main body unit 10. The battery 21 is replaceable, and can be, for example, a coin battery or a button battery. In this example, a small and thin coin battery (lithium ion battery CR2032, nominal voltage 3.0 V) is adopted as the battery 21. In addition, it can replace with the said battery 21 and can employ | adopt the battery whose nominal voltage is 3.0-5.0V.

  A lid 15 that prevents the battery 21 from falling off is detachably attached to the battery holding portion 14 that holds the battery 21. The lid 15 has a disk shape that is slightly larger than the battery 21, and an O-ring 16 that seals between the lid 15 and the second case 112 is fitted on the outer periphery thereof. The battery 21 is electrically connected to the control unit 40 via a lead (not shown). As shown in FIG. 2, a plurality of linear grooves 113 extending radially from the outer periphery of the lid 15 are formed in the second case 112 at equal intervals.

  As shown in FIGS. 4A and 4B, the second case 112 is formed with a flange portion 112b that protrudes outside the rib 112a. A sheet-like base material 33 is sandwiched between the flange portion 112b and the outer edge portion 111a of the first case 111 via a waterproof double-sided seal (not shown). The base material 33 is made of PET. As shown in FIG. 2, the base material 33 extends from the main body 10 in a sheet shape. As shown in FIGS. 1 and 3, the front side surface 33 b of the base material 33, which is the surface on which the operation surface 54 is exposed, is covered with the electrode support portion 121 extending from the outer shell forming body 12. And the back side surface 33a on the opposite side to the front side surface 33b in the base material 33 is spread over the entire region on the back side opposite to the surface (front side surface) on the outer shell forming body 12 side in the electrical muscular stimulation device 1. And the base material 33 and the electrode support part 121 are joined by the adhesive tape and silicone adhesion processing agent by 3M company which are not shown in figure.

  As shown in FIGS. 2 and 8, the electrode unit 30 includes a first electrode group 31 and a second electrode group 32. As shown in FIG. 5, the first electrode group 31 extends from the main body 10 so as to be positioned in the right direction X1 on the right hand 5a side of the human body 2 with respect to the center line 10a when attached to the abdomen 3. . As shown in FIG. 5, the second electrode group 32 extends from the main body 10 so as to be positioned in the left direction X2 on the left hand 5b side of the human body 2 with respect to the center line 10a when attached to the abdomen 3. . The first electrode group 31 includes a first right electrode 311 as a first electrode, a second right electrode 312 as a second electrode, and a third right electrode 313 as a third electrode. The second electrode group 32 includes a first left electrode 321 as a first electrode, a second left electrode 322 as a second electrode, and a third left electrode 323 as a third electrode.

  Each of the electrodes 311 to 313 and 321 to 323 is formed in a substantially rectangular shape with rounded corners. The longitudinal directions of the electrodes 311 to 313 and 321 to 323 (for example, the direction indicated by the symbol w in the third right electrode 313) are generally along the left-right direction X. In this example, each of the electrodes 311 to 313 and 321 to 323 has the same shape. The shapes of the electrodes 311 to 313 and 321 to 323 are such that, for example, when the length in the longitudinal direction is w and the length in the short direction is h, h / w is 0.40 to 0.95, preferably 0. .50 to 0.80, and in this example, h / w is 0.55.

  As shown in FIG. 2, a plurality of non-electrode forming portions 34 each having a predetermined hexagonal shape are formed at predetermined intervals inside each of the electrodes 311 to 313 and 321 to 323. The first right electrode 311, the second right electrode 312, and the third right electrode 313 are connected to the first lead portion 38 as a lead portion, and the first left electrode 321, the second left electrode 322, The third left electrode 323 is connected to a second lead portion 39 as a lead portion.

  As shown in FIG. 6, the first lead part 38 as a lead part includes a first control part side connection part group 380, a first terminal connection part 383, and a first electrode connection part group 384. The first control unit side connection unit group 380 includes a plurality of control unit side connection units (first control unit side connection) connected to a plurality of terminals (first terminal 451, second terminal 452) belonging to the first terminal group 45. Part 381, second control part side connection part 382). The first control unit side connection unit 381 and the second control unit side connection unit 382 protrude to the main body unit 10 side, respectively. And as shown in FIG.4 (b), while the 1st control part side connection part 381 and the 2nd control part side connection part 382 are each bent in the thickness direction along the inner wall of the 1st case 111, the The tip is bent parallel to the control board 41. And the front-end | tip of the 1st control part side connection part 381 and the 2nd control part side connection part 382 is inserted | pinched between the boss | hub 116 and the control board 41 as mentioned above.

  Further, as shown in FIG. 6, the first terminal connection portion 383 as the terminal connection portion includes a plurality of control portion side connection portions (first control portion side connection portions 381, belonging to the first control portion side connection portion group 380. The second control part side connection part 382) is formed so as to energize each other. In this example, the first terminal connecting portion 383 has a substantially semicircular arc shape along the outer edge 10 b of the main body portion 10. And the 1st control part side connection part 381 is provided in the end of the 1st terminal connection part 383, and the 2nd control part side connection part 382 is provided in the other end.

  The first electrode connection portion group 384 is directed from the first terminal connection portion 383 toward a plurality of electrodes (first right electrode 311, second right electrode 312, and third right electrode 313) belonging to the first electrode group 31. It consists of a plurality of electrode connection portions (first electrode connection portion 385, second electrode connection portion 386, and third electrode connection portion 387) that extend and are connected to the plurality of electrodes 311 to 313. In this example, the first electrode connection portion 385, the second electrode connection portion 386, and the third electrode connection portion 387 are all formed in a linear shape.

  Similar to the first lead part 38, the second lead part 39 as the lead part includes a second control part side connection part group 390, a second terminal connection part 393, and a second electrode connection part group 394. The second control unit side connection unit group 390 includes a plurality of control unit side connection units (third control unit side connection) connected to a plurality of terminals (third terminal 461 and fourth terminal 462) belonging to the second terminal group 46. Part 391 and fourth control part side connection part 392). Similarly to the first lead part 38, the tips of the third control part side connection part 391 and the fourth control part side connection part 392 are sandwiched between the boss 116 and the control board 41.

  Further, the second terminal connection portion 393 as the terminal connection portion is similar to the case of the first lead portion 38, and includes a plurality of control portion side connection portions (third control portion side) belonging to the second control portion side connection portion group 390. The connection part 391 and the fourth control part side connection part 392) are formed so as to energize each other. In the present example, as in the case of the first lead portion 38, the second terminal connection portion 393 has a substantially semicircular arc shape along the outer edge 10 b of the main body portion 10. A third control unit side connection unit 391 is provided at one end of the second terminal connection unit 393, and a fourth control unit side connection unit 392 is provided at the other end.

  Similarly to the case of the first lead part 38, the second electrode connection part group 394 includes a plurality of electrodes (first left electrode 321, second left electrode 322, From a plurality of electrode connection parts (fourth electrode connection part 395, fifth electrode connection part 396, sixth electrode connection part 397) extending toward the third left electrode 323) and connected to the plurality of electrodes 321 to 323 Become. In this example, the fourth electrode connecting portion 395, the fifth electrode connecting portion 396, and the sixth electrode connecting portion 397 are all formed in a linear shape.

  Then, as shown in FIGS. 7A to 7C, the first lead portion 38 (see FIG. 6) includes a first right path L1 as a first path, a second right path L2 as a second path, A third right path L3 as a third path is formed. The first right path L <b> 1 extends linearly from the first terminal 451 toward the first right electrode 311 and is connected to the first right electrode 311. The second right path L2 is connected from the first terminal 451 and the second terminal 452 to the second right electrode 312 via the first terminal connection portion 383. The third right path L3 is connected from the second terminal 452 to the third right electrode 313 via the first terminal connection portion 383. In the first lead portion 38, the paths L1 to L3 are the shortest paths connected to the respective electrodes 311 to 313.

  The length of each of the paths L1 to L3 in the first lead portion 38 is less than 20% of the average length obtained by averaging them, preferably less than 18% of the average length, and more preferably 15% of the average length. %. In this example, the lengths of the paths L1 to L3 are 40 mm, 35 mm, and 31 mm, respectively, and the average length obtained by averaging these is 35.33 mm. The differences between the lengths of the paths L1 to L3 and the average length are 4.67 mm, 0.33 mm, and 4.33 mm, respectively, and are 13.21%, 0.93%, and 12 of the average length, respectively. 26%.

  Further, as shown in FIGS. 7A to 7C, the second lead 39 (see FIG. 6) includes a first left path L4 as a first path, a second left path L5 as a second path, A third left side path L6 as a third path is formed. The first left path L4 extends linearly from the third terminal 461 toward the first left electrode 321 and is connected to the first left electrode 321. The second left side path L5 is connected from the third terminal 461 and the fourth terminal 462 to the second left electrode 322 via the second terminal connection portion 393. The third left side path L6 is connected from the fourth terminal 462 to the third left side electrode 323 through the second terminal connection portion 393. In the second lead portion 39, the paths L4 to L6 are the shortest paths connected to the electrodes 321 to 323, respectively.

  Similar to the first lead portion 38, the length of each of the paths L4 to L6 in the second lead portion 39 is less than 20% of the average length obtained by averaging them, and preferably less than 18% of the average length. More preferably, it is less than 15% of the average length. In this example, the lengths of the paths L4 to L6 are 40 mm, 35 mm, and 31 mm, respectively, and the average length obtained by averaging these is 35.33 mm. The differences between the lengths of the paths L4 to L6 and the average length are 4.67 mm, 0.33 mm, and 4.33 mm, respectively, and are 13.21%, 0.93%, and 12 of the average length, respectively. 26%.

  The first lead portion 38 and the second lead portion 39 as lead portions are coated with silicon so that they cannot be electrically connected to the outside. In addition, a silicon coating is also applied to a portion connected to the first lead portion 38 and the second seed portion 39 in each of the electrodes 311 to 313 and 321 to 323 and a region near the portion (a hatched region indicated by C in FIG. 2). It cannot be connected to the outside. As a result, the first lead portion 38, the second seed portion 39, and the hatched region C are prevented from being energized in contact with the skin. The first right electrode 311, the second right electrode 312 and the third right electrode 313 are connected in parallel to each other via the first lead portion 38, and the first left electrode 321, the first right electrode 321, the second right electrode 313 are connected to each other via the second lead portion 39. The 2 left electrode 322 and the third left electrode 323 are connected in parallel to each other.

  As shown in FIG. 2, the electrode portion 30 is formed on the back side surface 33 a of the base material 33. Thereby, the electrode part 30 is formed integrally with the main body part 10. The electrode unit 30 may be formed so as to be embedded in the base material 33. In this example, the electrode part 30 is formed by printing a conductive ink containing a silver paste on the back side surface 33 a of the base material 33. The first electrode group 31 and the second electrode group 32 include four or more electrodes 311 to 313 and 321 to 323 in total. In this example, the first electrode group 31 and the second electrode group 32 include the same number of electrodes 311 to 313 and 321 to 323, respectively, and the number thereof is three. That is, the first electrode group 31 includes a first right electrode 311, a second right electrode 312, and a third right electrode 313, and the second electrode group 32 includes a first left electrode 321 and a second left electrode 322. The third left electrode 323 is provided. In the base material 33, the portions where the first right electrode 311, the second right electrode 312 and the third right electrode 313 are formed are respectively referred to as a first right base 331, a second right base 332 and a third right base 333. The portions where the first left electrode 321, the second left electrode 322, and the third left electrode 323 are formed are referred to as a first left base 341, a second left base 342, and a third left base 343, respectively.

  A gel pad 35 (“Technogel (registered trademark)” manufactured by Sekisui Plastics Co., Ltd., model number SR-RA240 / 100) is attached to each of the electrodes 311 to 313 and 321 to 323. The gel pad 35 has conductivity, and the electrodes 311 to 313 and 321 to 323 can energize the abdomen 3 (see FIG. 5) via the gel pad 35. The gel pad 35 has high adhesiveness, and the muscular electrical stimulation device 1 is attached to the abdomen 3 via the gel pad 35.

  As shown in FIG. 2, the gel pad 35 has a shape that is slightly larger than the electrodes 311 to 313 and 321 to 323, and individually covers the electrodes 311 to 313 and 321 to 323. Since the gel pad 35 is replaceable, the gel pad 35 can be replaced as appropriate when the adhesive force decreases, breaks, or becomes conspicuous with use. Alternatively, the used gel pad 35 may be replaced with a new one every predetermined period (for example, one month, two months, etc.).

  As shown in FIG. 2, the first right electrode 311, the second right electrode 312, and the third right electrode 313 are all center lines parallel to the height direction Y of the human body 2 (see FIG. 5) and passing through the center of the main body 10. It extends from the main body 10 so as to be positioned in the first region G1 in the right direction X1 with respect to 10a. The first right electrode 311, the second right electrode 312 and the third right electrode 313 are arranged so as to be positioned on the same virtual straight line F1. In this example, the virtual straight line F1 is parallel to the central axis 10a.

  On the other hand, the first left electrode 321, the second left electrode 322, and the third left electrode 323 extend from the main body 10 so as to be positioned in the second region G2 in the left direction X2 with respect to the center line 10a. The first left electrode 321, the second left electrode 322, and the third left electrode 323 are also arranged so as to be positioned on the same virtual straight line F2. In this example, the virtual straight line F2 is parallel to the central axis 10a.

  As shown in FIG. 2, the first electrode group 31 and the second electrode group 32 are arranged symmetrically with respect to the center line 10a when attached to the abdomen 3 (see FIG. 5). Has been. That is, the first right electrode 311 and the first left electrode 321 are positioned symmetrically with respect to the center line 10a when attached to the abdomen 3, and the second right electrode 312 and the second left electrode 322 are line symmetrical. The third right electrode 313 and the third left electrode 323 are arranged in line symmetry.

  In addition, as shown in FIG. 2, the first electrode group 31 and the second electrode group 32 are attached to the abdomen 3 (see FIG. 5) in the height direction Y when the first electrode group 31 and the second electrode group 32 are attached. 32, a pair of upper electrode pairs 301 including the first right electrode 311 and the first left electrode 321 located on the uppermost side, and a third right electrode 313 and a third left electrode 323 located on the lowermost side. A pair of lower electrodes 303 and a pair of second right electrodes 312 and a center electrode 302 formed of a second left electrode 322 located between the upper electrode pair 301 and the lower electrode pair 303 are formed. It is configured to be. Accordingly, the upper electrode pair 301, the central electrode pair 302, and the lower electrode pair 303 are arranged in this order from the upper side to the lower side along the height direction Y.

  The center electrode pair 302 protrudes in the direction (left-right direction X) extending from the main body 10 more than the upper electrode pair 301 and the lower electrode pair 303. That is, when attached to the abdomen 3, the second right electrode 312 constituting the central electrode pair 302 is the first right electrode 311 constituting the upper electrode pair 301 and the third right electrode 313 constituting the lower electrode pair 303. It protrudes in the right direction X1. Similarly, the second left electrode 322 constituting the central electrode pair 302 protrudes in the left direction X2 more than the first left electrode 321 constituting the upper electrode pair 301 and the third left electrode 323 constituting the lower electrode pair 303. ing.

  Further, as shown in FIG. 2, the upper electrode pair 301 is inclined in a V shape so as to be positioned on the upper side in the extending direction. As described above, the electrodes 311 to 313 and 321 to 323 have the same size. On the other hand, the right bases 331 to 333 in the base material 33 of the electrode unit 30 are larger than the electrodes 311 to 313, and the left bases 341 to 343 are larger than the electrodes 321 to 323.

  Further, as shown in FIG. 2, the upper electrode pair 301 protrudes in the direction (left-right direction X) extending from the main body 10 than the lower electrode pair 303. That is, when attached to the abdominal part 3, the first right electrode 311 constituting the upper electrode pair 301 protrudes in the right direction X 1 from the third right electrode 313 constituting the lower electrode pair 303. Similarly, the first left electrode 321 constituting the upper electrode pair 301 protrudes in the left direction X2 from the third left electrode 323 constituting the lower electrode pair 303.

As shown in FIG. 2, the lower outer edge 331a of the first right base 331 bulges in the right direction X1, and the lower outer edge 341a of the first left base 341 bulges in the left direction X2.
Further, the center outer edge 332a of the second right base 332 is slightly bulged in the right direction X1, and the center outer edge 342a of the second left base 342 is slightly bulged in the left direction X2.
Further, the upper outer edge 333a of the third right base 333 bulges in the right direction X1, and the lower outer edge 333b of the third right base 333 bulges downward (downward in the Y direction). The upper outer edge 343a of the third left base 343 bulges in the left direction X2, and the lower outer edge 343b of the third left base 343 bulges downward.

  By making the bases 331 to 333 and 341 to 343 in the base material 33 as described above, as shown in FIGS. 1 and 5, when the muscular electrical stimulation device 1 is viewed from the front side, the muscular electrical stimulation device 1. Is arranged so as to wrap the rectus abdominis 4 in the abdomen 3 in the left-right direction. Moreover, it can be expected that each muscle is efficiently stimulated by arranging the electrodes in combination with the section 4a of the rectus abdominis 4. Furthermore, by recognizing such a shape, the user can be reminded of an image in which the abdominal part 3 is tightened and the abdominal muscles are broken. Thereby, the effect of the image training for setting it as the abdominal part 3 which the abdominal muscle cracked and tightened by using the muscular electrical stimulation apparatus 1 is acquired. (Improvement of exercise effect by image training is generally well known.)

  In addition, as shown in FIG. 2, a cut portion 17 cut toward the main body portion 10 between the adjacent electrodes 311 to 313 and 321 to 323 in the first electrode group 31 and the second electrode group 32. Is formed. In this example, between the first right electrode 311 and the second right electrode 312, between the second right electrode 312 and the third right electrode 313, between the third right electrode 313 and the third left electrode 323, 3 between the left electrode 323 and the second left electrode 322, between the second left electrode 322 and the first left electrode 321, and between the first left electrode 321 and the first right electrode 311. A cut portion 17 is formed. Furthermore, four through holes 18 are formed around the main body 10. In this example, as shown in FIG. 1, the leading end 17a of the cut portion 17 has a curvature radius of 1.0 mm in plan view.

Next, the structure of the muscular electrical stimulation apparatus 1 of this example is demonstrated using a block diagram.
As shown in FIG. 8, the electrical muscular stimulation device 1 includes a power source unit 20, a control unit 40, and an operation unit 50 inside the main body unit 10, and also includes a skin detection unit 402 and a battery voltage detection unit 406.

  Skin detection unit 402 detects whether or not electrode unit 30 is in contact with the skin. Specifically, the skin detection unit 402 is electrically connected to the electrode unit 30 and detects a resistance value between the first electrode group 31 and the second electrode group 32. Then, the detected value is compared with a preset threshold value, and when the detected value is smaller than the threshold value, it is detected that the skin is in contact with the first electrode group 31 and the second electrode group 32.

  The battery voltage detection unit 406 detects the voltage of the battery 21 in the power supply unit 20 and determines whether or not the detected battery voltage V of the battery 21 in the power supply unit 20 is lower than a predetermined threshold value Vm. In this example, the nominal voltage V of the battery 21 is 3.0V, and the threshold value Vm is 2.1V.

  As shown in FIG. 8, the power supply unit 20 includes a battery 21. The control unit 40 includes an output adjustment unit 401, a power-off counter 403, a timer 404, an output mode switching unit 405, and an output mode storage unit 405a. The output adjustment unit 401 adjusts the output voltage (output level) at the electrode unit 30. In this example, the maximum output voltage is 40 V, and the 100% output voltage is set to decrease by 2.0 V every time the output level decreases by one. There are 15 output levels from level 1 to level 15.

  The power-off counter 403 measures an elapsed time after receiving the count start signal. The timer 404 measures an elapsed time after receiving the output start signal. The output mode switching unit 405 switches the output mode in the electrode unit 30 to any one of the first output mode, the second output mode, and the third output mode, and sets the frequency of the burst wave to be output. Part. The output mode storage unit 405a stores a first output mode, a second output mode, and a third output mode. In the first output mode, the second output mode, and the third output mode, a basic waveform as a burst wave pattern having pulse group output interruption periods R1 to R5 is stored in advance, and the output mode storage unit 405a stores the burst wave pattern. A storage unit is configured. Note that the burst wave pattern storage unit 405a includes a definition description of a burst wave waveform on the program.

Next, the output mode in the electrode unit 30 will be described.
First, five burst wave patterns (basic waveforms B1 to B5) shown in FIG. 9 are stored in the output mode storage unit 405a serving as a duration storage unit. Each basic waveform B1 to B5 includes a pulse group output period P and a pulse group output interruption period R1 to R5. That is, the basic waveforms B1 to B5 have a common pulse group output period P, and the lengths of the pulse group output interruption periods R1 to R5 are different.

  In the pulse group output period P, a plurality of rectangular wave pulse signals S1 to S5 are output with output stop times N1 to N5 interposed therebetween. In this example, five rectangular wave pulse signals S1 to S5 are output. That is, the pulse group output period P includes the first rectangular wave pulse signal S1, the first output stop time N1, the second rectangular wave pulse signal S2, the second output stop time N2, and the third rectangular wave pulse signal. S3, third output stop time N3, fourth rectangular wave pulse signal S4, fourth output stop time N4, fifth rectangular wave pulse signal S5, and fifth output stop time N5 are executed in this order.

  In this example, the pulse widths and pulse voltages of the rectangular wave pulse signals S1 to S5 are constant, and the durations of the output stop times N1 to N5 are also constant. In this example, the pulse width of each of the rectangular wave pulse signals S1 to S5 is 100 μs, the pulse voltage is ± 40 V at 100% output, and the duration of the output stop time N1 to N5 is 100 μs. Therefore, the duration of the pulse group output period P is 1 ms. And the voltage polarity in each rectangular wave pulse signal S1-S5 is changed alternately by the order of output. That is, the first rectangular wave pulse signal S1, the third rectangular wave pulse signal S3, and the fifth rectangular wave pulse signal S5 have a positive polarity, and the second rectangular wave pulse signal S2 and the fourth rectangular wave. The pulse signal S4 has a negative polarity.

  As described above, the pulse width of each rectangular wave pulse signal S1 to S5 and the duration of each output stop time N1 to N5 in the pulse group output period P are 100 μs. Therefore, the pulse period of each rectangular wave pulse signal S1 to S5 in the pulse group output period P is 200 μs, which is sufficiently short. Therefore, the user recognizes these rectangular wave pulse signals S1 to S5 as one electrical stimulus. In addition, the frequency of each rectangular wave pulse signal S1-S5 in the pulse group output period P is 5,000 Hz.

  In each of the basic waveforms B1 to B5, no pulse signal is output during the pulse group output interruption periods R1 to R5. The duration of the pulse group output interruption period R1 to R5 is longer than the duration of the pulse group output period P. In this example, as shown in FIG. 9, the duration of the pulse group output period P is 1 ms, and the durations of the pulse group output interruption periods R1 to R5 are 499 ms, 249 ms, 124 ms, 61.5 ms, respectively. 49 ms. Thus, the pulse group output interruption periods R1 to R5 have a very long duration compared to the output stop time in the pulse group output period P.

Therefore, as shown in FIG. 9, the first burst wave (2 Hz) is composed of a pulse group output period P of 1 ms and a pulse group output interruption period R1 of 499 ms. That is, the first burst wave (2 Hz) is output with a frequency of the pulse group output period P of 2 Hz.
The second burst wave (4 Hz) includes a pulse group output period P of 1 ms and a pulse group output interruption period R2 of 249 ms. That is, the second burst wave (4 Hz) is output at a frequency of 4 Hz in the pulse group output period P.
The third burst wave (8 Hz) includes a pulse group output period P of 1 ms and a pulse group output interruption period R3 of 124 ms. That is, the third burst wave (8 Hz) is output at a frequency of 8 Hz in the pulse group output period P.
The fourth burst wave (16 Hz) includes a pulse group output period P of 1 ms and a pulse group output interruption period R4 of 61.5 ms. That is, the fourth burst wave (16 Hz) is output at a frequency of 16 Hz in the pulse group output period P.
The fifth burst wave (20 Hz) includes a pulse group output period P of 1 ms and a pulse group output interruption period R5 of 49 ms. That is, the fifth burst wave (20 Hz) is output with a frequency of 20 Hz in the pulse group output period P.

  Then, by repeatedly outputting the basic waveforms B1 to B5 in a predetermined combination for a predetermined period, as shown in FIGS. 10A to 10E, a predetermined burst wave is output. As described above, since the user recognizes the plurality of rectangular wave pulse signals S1 to S5 in the pulse group output period P as one electrical stimulus, as shown in FIG. In the first burst wave repeating the above, an electrical stimulus having a frequency of 2 Hz is output. Similarly, in the second burst wave that repeats the basic waveform B2, an electrical stimulus with a frequency of 4 Hz is output, and in the third burst wave that repeats the basic waveform B3, an electrical stimulus with a frequency of 8 Hz is output, and the fourth burst repeats the basic waveform B4. In the burst wave, an electrical stimulus with a frequency of 16 Hz is output, and in the fifth burst wave that repeats the basic waveform B5, an electrical stimulus with a frequency of 20 Hz is output.

The first to third output modes stored in the output mode storage unit 405a serving as the duration storage unit are appropriately selected from the basic waveforms B1 to B5 stored in the output mode storage unit 405a. Composed of a combination of burst waves. First, as shown in Table 1, the first output mode is a warm-up mode configured to sequentially perform the following first status to fourth status. The conditions for each status are as follows.
(1) In the first status, 100% output is performed with the first burst wave (2 Hz) for 20 seconds. As shown in FIG. 11, so-called soft start is performed in which the output voltage is gradually increased from 0% to 100% for the first 5 seconds in the first status.
(2) In the second status, 100% output is performed for 20 seconds with the second burst wave (4 Hz).
(3) In the third status, 100% output is performed with the third burst wave (8 Hz) for 10 seconds.
(4) In the fourth status, 100% output is performed for 10 seconds with the fourth burst wave (16 Hz).
The duration of the first output mode (that is, the total duration of the first status to the fourth status) is 1 minute. In the first output mode, since the burst wave frequency is configured to increase stepwise from 2 Hz to 16 Hz, the first output mode is called a warm-up mode.

  In the first output mode as the warm-up mode, the frequency of muscle movement increases as the burst wave frequency increases stepwise from 2 Hz to 16 Hz, and the muscle and body gradually warm up. This prevents a sudden rise in blood pressure, temporary oxygen shortage in the muscle, and the like. Moreover, when the muscles are gradually warmed, the blood flow is increased and the flexibility of the muscles is increased. Thereby, in the subsequent training mode, it becomes easier to obtain the effect of muscle stimulation. Also, by performing the warm-up mode prior to the training mode, the user can be used to the stimulation moderately, so that the sensation is improved.

Next, as shown in Table 2, the second output mode is a training mode configured to perform the following first status to fourth status in order. The conditions for each status are as follows.
(1) In the first status, 100% output is performed for 3 seconds with the fifth burst wave (20 Hz), and then no output is maintained for 2 seconds. Repeat for 5 minutes.
(2) In the second status, 100% output is performed with the fifth burst wave (20 Hz) for 3 seconds, and then 100% output is performed with the second burst wave (4 Hz) for 2 seconds. Repeat for 5 minutes.
(3) In the third status, 100% output is performed with the fifth burst wave (20 Hz) for 4 seconds, and then 100% output is performed with the second burst wave (4 Hz) for 2 seconds. Repeat for 5 minutes.
(4) In the fourth status, 100% output is performed with the fifth burst wave (20 Hz) for 5 seconds, and then 100% output is performed with the second burst wave (4 Hz) for 2 seconds. Repeat for 5 minutes.
As shown in FIG. 11, in the second output mode, so-called soft start is performed in which the output voltage is gradually increased from 0% to 100% for the first 5 seconds in the first status to the fourth status. .
The duration of the second output mode is 20 minutes. In the second output mode, the fifth burst wave with a frequency of 20 Hz is maintained for a predetermined period, and then no output or the second burst wave with a frequency of 4 Hz is maintained for a predetermined period, so that it is excellent for stimulating muscles effectively. . Therefore, the second output mode is called a training mode.

Next, as shown in Table 3, the third output mode is a cool-down mode configured to perform the following first status to fourth status in order. The conditions for each status are as follows.
(1) In the first status, the fourth burst wave (16 Hz) is output for 10 seconds.
(2) In the second status, the third burst wave (8 Hz) is output for 10 seconds.
(3) In the third status, the second burst wave (4 Hz) is output for 20 seconds.
(4) In the fourth status, the first burst wave (2 Hz) is output for 20 seconds.
In the third output mode, as shown in FIG. 11, the output in each status is gradually reduced to 100% at the start of the first status and 50% at the end of the fourth status.
The duration of the third output mode is 1 minute. In the third output mode, the burst wave frequency is configured to gradually decrease from 16 Hz to 2 Hz. Therefore, the third output mode is called a cool-down mode.

  In the third output mode as the cool-down mode, the muscles and body that have been warmed up gradually as the frequency of the muscles decreases as the frequency of the burst wave gradually decreases from 16 Hz to 2 Hz. It will be cooled. Then, the fatigue substance generated in the muscle in the preceding training mode is positively discharged from the muscle, and the fatigue substance is prevented from remaining excessively in the muscle.

  As described above, the total time when the first output mode (warm-up mode), the second output mode (training mode), and the third output mode (cool-down mode) are continuously performed is 22 minutes. In this example, as shown in FIG. 11, a rest period of 2 seconds is provided at a total of four locations between the first output mode and the second output mode and between each status in the second output mode. It has been. Therefore, the total time of all the processes including the suspension period is 22 minutes and 8 seconds.

Next, the usage mode in the electrical muscular stimulation device 1 of this example will be described in detail below.
The main operation flow S100 shown in FIG. 12 will be described. In the main operation flow S100, first, “+” on the operation surface 54 is pressed for 2 seconds (S101). As a result, the electric power of the muscular electrical stimulation device 1 is turned on, the electrical muscular stimulation device 1 is activated, and a notification sound (“pee”) notifying that it has been activated is emitted from the speaker 43 (S102). ). Thereafter, the electrical muscular stimulation device 1 enters an output standby state, the output level is set to 0, and the input of the operation unit 50 is invalidated (S103).

  Next, it is detected by the skin detection part 402 whether the skin is contacting the electrode part 30 (S104). When the skin detection unit 402 detects that the skin is in contact with the electrode unit 30 (Yes in S104), the operation unit 50 is validated (S105). Then, an output level is input by the operation unit 50 (S106). The input of the output level is performed from the operation surface 54 of the operation unit 50. Every time “+” on the operation surface 54 of the operation unit 50 is pressed, the output level increases by one level, and every time “−” on the operation surface 54 is pressed, the output level decreases by one level. When the output level is set, an output start signal is sent from the control unit 40 to the timer 404, and measurement is started in the timer 404 (S107). Further, the operation of the output level can be performed at any time during the usage time (after the operation unit 50 is activated until the power is turned off).

  From the time when the timer 404 starts measurement (elapsed time 0) to the elapsed time 1 minute, the output mode of the electrode unit 30 is set to the first output mode (warm-up mode) (S108). When the elapsed time reaches 1 minute, the output mode switching unit 405 as a frequency setting unit switches the output mode in the electrode unit 30 to the second output mode (training mode) and maintains it for 20 minutes until the elapsed time of 21 minutes (S109). ). When the elapsed time reaches 21 minutes, the output mode switching unit 405 serving as a frequency setting unit switches the output mode in the electrode unit 30 to the third output mode (cool down mode) and maintains it for 1 minute until the elapsed time of 22 minutes ( S110). When the elapsed time reaches 22 minutes, the measurement in the timer 404 is terminated (S111). Then, the muscular electrical stimulation device 1 is stopped (S112). As described above, when S108 to S111 are performed, one set of the first output mode (warm-up mode), the second output mode (training mode), and the third output mode (cool-down mode) is performed, and the process ends. It will be.

  On the other hand, if the skin detection unit 402 determines that the skin is not in contact with the electrode unit 30 (No in S104), a notification sound (“pi, pi, pi”) to notify that is sent by the speaker 43. It is emitted (S113). Then, a count start signal is sent from the control unit 40 to the power-off counter 403, and measurement of elapsed time is started in the power-off counter 403 (S114).

  Next, the skin detection unit 402 detects whether or not the skin is in contact with the electrode unit 30 (S115). When the skin detection unit 402 detects that the skin is in contact with the electrode unit 30, the process returns to the above-described step S103 and enters an output standby state (Yes in S115). On the other hand, when the skin detection unit 402 determines that the skin is not in contact with the electrode unit 30 (No in S115), it is determined whether the elapsed time in the power-off counter 403 has exceeded 2 minutes (S116). . When it is determined that the elapsed time in the power-off counter 403 does not exceed 2 minutes (No in S116), the process returns to S115 again, and the skin detection unit 402 detects whether the skin is in contact with the electrode unit 30 or not. To do. On the other hand, when it is determined in S116 that the elapsed time in the power-off counter 403 exceeds 2 minutes (Yes in S116), the power of the muscular electrical stimulation device 1 is turned off (S117).

  Next, a description will be given of an interrupt process that is preferentially interrupted between S105 and S110 in the main operation flow S100 described above. As shown in FIG. 13, a skin detection interrupt process S200 is performed as the first interrupt process. The skin detection interrupt process S200 is used as a function of automatically turning off the power when the electrode is detached from the human body during use. In the skin detection interruption process S200, first, the skin detection unit 402 detects whether or not the skin is in contact with the electrode unit 30 (S201). When the skin detection unit 402 detects that the skin is in contact with the electrode unit 30 (Yes in S201), the process returns to the original flow in the main operation flow S100. On the other hand, when the skin detection unit 402 determines that the skin is not in contact with the electrode unit 30 (No in S201), a notification sound (“pi, pi, pi”) notifying that is sent by the speaker 43. It is emitted (S202). Then, a count start signal is sent from the control unit 40 to the power-off counter 403, and the power-off counter 403 starts measuring elapsed time (S203).

  Next, the skin detection unit 402 detects whether or not the skin is in contact with the electrode unit 30 (S204). When the skin detecting unit 402 detects that the skin is in contact with the electrode unit 30, the process returns to step S103 of the main operation flow S100 (Yes in S204). On the other hand, when the skin detecting unit 402 determines that the skin is not in contact with the electrode unit 30 (No in S204), it is determined whether the elapsed time in the power-off counter 403 has exceeded 2 minutes (S205). . When it is determined that the elapsed time in the power-off counter 403 does not exceed 2 minutes (No in S205), the process returns to S204 again, and the skin detection unit 402 detects whether or not the skin is in contact with the electrode unit 30. To do. On the other hand, when it is determined in S205 that the elapsed time in the power-off counter 403 exceeds 2 minutes (Yes in S205), the power of the muscular electrical stimulation device 1 is turned off (S206).

  Next, as shown in FIG. 14, a battery voltage lowering process S300, which is a second interrupt process interrupted between S105 to S110 in the main operation flow S100 described above, will be described. The battery voltage lowering process S300 is a function for automatically turning off the power when the battery voltage of the battery 21 decreases. As a result, the user can easily know when it is necessary to replace the battery. First, the battery voltage detection unit 406 determines whether or not the detected battery voltage V of the battery 21 in the power supply unit 20 is lower than a predetermined threshold value Vm (S301). When it is determined that the battery voltage V is not lower than the predetermined threshold value Vm (No in S301), the process returns to the original flow in the main operation flow S100. On the other hand, when it is determined that the battery voltage V is lower than the predetermined threshold value Vm, a notification sound (“pi, pi, pi”) notifying that effect is emitted from the speaker 43 (S302). Then, a count start signal is sent from the control unit 40 to the power-off counter 403, and the measurement of elapsed time is started in the power-off counter 403 (S303).

  Next, it is determined whether or not the elapsed time in the power-off counter 403 has exceeded 2 minutes (S304). When it is determined that the elapsed time in the power-off counter 403 does not exceed 2 minutes (No in S304), the process returns to S304 again. When it is determined that the elapsed time in the power-off counter 403 exceeds 2 minutes (Yes in S304), the electrical power of the muscle electrical stimulation device 1 is turned off (S305).

  Next, as shown in FIG. 15, an interruption process S400, which is a third interruption process interrupted between S105 and S110 in the main operation flow S100 described above, will be described. First, the control unit 50 determines whether or not the time during which the “−” button on the operation surface 54 of the operation unit 50 is pressed is 2 seconds or more (S401). When it is determined that the time during which the “−” button is pressed is not 2 seconds or longer (No in S401), the process returns to the original flow in the main operation flow S100. On the other hand, when it is determined that the time during which the “−” button is pressed is 2 seconds or longer (Yes in S401), the notification sound (notifying that the power is turned off and the process is ended) "Pee") is emitted from the speaker 43 (S402). Then, the power is turned off (S403).

The effects of the electrical muscular stimulation device 1 of this example will be described in detail below.
In the muscular electrical stimulation device 1, the lengths of the shortest paths L1 to L3 (L4 to L6) from the respective electrodes 311 to 313 (321 to 323) to the terminals 451 and 452 (461 and 462) are the shortest. The difference from the average length of the paths L1 to L3 (L4 to L6) is less than 20% of the average length. For this reason, variations in the energization distance between the electrodes 311 to 313 (321 to 323) and the control unit 40 hardly occur, and the lead part 38 (39) that electrically connects the electrodes 311 to 313 (321 to 323) and the control unit 40. ) Variation in electrical resistance for each electrode can be reduced. Therefore, the electrical stimulation output from each electrode 311 to 313 (321 to 323) is less likely to vary, and electrical stimulation can be applied to the muscle in a well-balanced manner.

  The control unit 40 includes a plurality of terminals 451 and 452 (461 and 462) to which voltages having the same polarity are applied. The lead portion 38 (39) has a terminal connection portion 383 (393) connected to the plurality of terminals 451, 452 (461, 462), a terminal connection portion 383 (393), and electrodes 311 to 313 (321). To 323) are connected to electrode connecting portions 385 to 387 (395 to 397). Thereby, the freedom degree of arrangement | positioning of the electrodes 311-313 (321-323) can be raised, keeping shortest path | route L1-L3 (L4-L6) via the lead | read | reed part 38 (39) short. As a result, it becomes easy to arrange the electrodes 311 to 313 (321 to 323) at positions suitable for applying electrical stimulation to muscles.

  In the present example, the plurality of electrodes 311 to 313 (321 to 323) are arranged so as to be positioned on the same virtual straight line F1 (F2). Thereby, since it becomes easy to make the electrodes 311 to 313 (321 to 323) correspond to each of the plurality of sections 4a arranged on a straight line like the rectus abdominis 4, muscles such as the rectus abdominis 4 can be effectively used. Can irritate.

  In this example, two terminals 451 and 452 (461 and 462) having the same polarity are provided. Thereby, it is possible to reduce the manufacturing cost while shortening the shortest paths L1 to L3 (L4 to L6) with the respective electrodes 311 to 313 (321 to 323) with a small configuration.

  In this example, the first electrode group 31 of the electrode unit 30 has three electrodes 311 to 313, and the second electrode group 32 has three electrodes 321 to 323. Thereby, since the electrodes 311 to 313 can correspond to the three sections 4a in which the rectus abdominis 4 is partitioned in the height direction Y, the rectus abdominis 4 can be stimulated more effectively.

  Further, in this example, the plurality of terminals 451, 452, 461, 462, the electrodes 311 to 312, 321 to 323, and the lead portions 38 and 39 are each bisected by a center line 10 c passing through the center of the main body 10. They are arranged in both the region (first region G1) and the other region (second region G2). The electrodes 311 to 312 disposed in one region (first region G1) and the electrodes 321 to 323 disposed in the other region (second region G2) are applied with voltages having different polarities. It is configured. As a result, the electrodes 311 to 312 and 321 to 323 correspond to the left and right rectus abdominis muscles 4 by attaching them to the middle of the abdomen 3 so that the central axis 10a is parallel to the height direction Y of the person 2. Therefore, the muscular electrical stimulation device 1 is suitable for stimulating the rectus abdominis 4.

  In this example, the terminal connection portions (the first terminal connection portion 383 and the second terminal connection portion 393) are formed along the outer edge 10 b of the main body portion 10. Thereby, since the lead portions (the first lead portion 38 and the second lead portion 39) can be easily formed short, electrical stimulation can be output efficiently.

  In this example, the plurality of control unit side connection units 381, 382, 391, 392 and the control unit 40 are fastened and fixed via screws 115, but instead, a plurality of control unit side connection units 381 are provided. , 382, 391, 392 may be fixed so as to be connected to the control unit 40 with the first case 111 and the second case 112 interposed therebetween.

  The battery 21 can be a button battery or a coin battery, and in this example is a coin battery. Thereby, since the battery 21 becomes small, it contributes to size reduction of the muscular electrical stimulation apparatus 1. And since weight reduction can be achieved with size reduction of the muscular electrical stimulation apparatus 1, the electrode part 30 becomes difficult to peel and drop | omit from a user's body, usability improves, and portability also improves. Furthermore, since the battery 21 is also thin, it contributes to thinning of the muscular electrical stimulation device 1. And since the muscular electrical stimulation apparatus 1 becomes thin, the user can wear clothes from the top with the muscular electrical stimulation apparatus 1 attached. Therefore, the muscular electrical stimulation device 1 can be used in various other situations while commuting to work, attending school, working such as housework or work. In addition, since the button battery and the coin battery have stable discharge characteristics at a high operating voltage compared to other dry batteries, the muscular electrical stimulation device 1 can be stably operated for a relatively long time.

  In addition, a battery having a nominal voltage of 3.0 to 5.0 V can be used as the battery 21, and a 3.0 V battery 21 is used in this example. Since the drive voltages of the electronic component 42 and the speaker 43 provided in the muscular electrical stimulation device 1 are the same, it is not necessary to separately provide a step-down circuit and a step-up circuit for driving these electronic components 42 and 43. Thereby, it can contribute to size reduction.

  The power supply unit 20 may incorporate a rechargeable battery instead of the replaceable battery 21 described above. As a charging means for such a battery, a power supply terminal that can be connected to an external power source may be provided, or a non-contact power supply unit that uses electromagnetic induction may be provided. In this case, since the battery can be used repeatedly, consumables can be reduced compared to the case of using a non-rechargeable battery.

  In this example, the base material 33 on which the electrode part 30 is formed is extended from the main body part 10, and the electrode support part 121 extended from the outer shell forming body 12 is bonded to the electrode 33. The part 30 and the main body part 10 are integrally formed. Instead of this, the base material 33 and the main body 10 are separated from each other, and the electrode support 121 and the outer shell forming body 12 are formed as separate bodies so that the main body 10 and the electrode 30 are not used. It may be configured to be separable from each other at times. In this case, the electrode unit 30 can be separated from the main body unit 10 and replaced with another type of electrode unit. Moreover, since the electrode part 30 does not have an electronic component, the electrode part 30 can be wash | cleaned easily by isolate | separating.

  As described above, according to this example, it is possible to provide the muscular electrical stimulation device 1 in which variations in electrical stimulation output from the electrodes 311 to 323 are reduced and the degree of freedom in arrangement of the electrodes 311 to 323 is improved. can do.

In this example, the second output mode (training mode) is executed based on the first status to the fourth status shown in Table 2 above. Instead, the second status a shown in Table 4 is executed between the second status and the third status in the first status to the fourth status equivalent to this example as in the first modification shown below. The 3a status shown in Table 4 may be executed between the third status and the fourth status.

In the first modification, as shown in Table 4, the 2a status and the 3a status are performed as follows.
(2a) In the 2a status, after the second burst wave (4 Hz) is output for 100 seconds for 10 seconds, the third burst wave (8 Hz) is output for 100 seconds for 10 seconds. 100% output is performed for 10 seconds with 4 burst waves (16 Hz).
(3a) In the 3a status, after the second burst wave (4 Hz) is output for 100 seconds for 10 seconds, the third burst wave (8 Hz) is output for 100 seconds for 10 seconds. 100% output is performed for 10 seconds with 4 burst waves (16 Hz).
In the first modification, since the 2a status and the 3a status are added as compared with the second output mode (see Table 2) of the present example, the first output mode (warm-up mode) shown in Table 4 is added. The total time when the second output mode (training mode) and the third output mode (cool down mode) are continuously performed is 23 minutes.

  In the 2a status, since the frequency of the burst wave is increased stepwise from 4 Hz to 16 Hz, the frequency change at the time of switching from the 2a status to the 3rd status becomes smooth. Similarly, the frequency change at the time of switching from the 3a status to the 4th status becomes smooth. And in the said modification 1, when the 2a status and the 3a status are added with respect to the case of Example 1, the pattern of the electrical stimulation in 2nd output mode (training mode) will change a lot. As a result, it is possible to prevent a decrease in the bodily sensation due to the user's familiarity with the electrical stimulation, and to stimulate the rectus abdominis muscle more effectively. In addition, by providing the 2a status and the 3a status, there is also an effect of flushing out fatigue substances in muscles that have been fatigued by the application of electrical stimulation. In the first modification in which the second output mode (training mode) is set in this way, the same effects as those of the first embodiment can be obtained.

In the first embodiment, when the frequency of the burst wave is changed, the frequency setting unit (output mode switching unit 405) is predetermined from the burst wave pattern stored in the burst wave pattern storage unit (output mode storage unit 405a). I try to choose one. Instead of this, the following modified example 2 may be employed. As shown in FIG. 16, the modification 2 includes an operation surface 54a as a frequency selection unit that selects the frequency of the burst wave, an interruption period duration calculation unit 405b, and an interruption period duration setting unit 405c.
Then, the interruption period duration calculation unit 405b calculates the duration of the pulse group output interruption period based on the frequency selected by the frequency selection unit (operation surface 54a).
The interruption period duration setting unit 405c sets the duration of the pulse group output interruption period based on the duration calculated by the interruption period duration calculation unit 405b.
In the second modification, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  According to the second modification, since the frequency of the burst wave can be set to a desired frequency by the frequency selection unit (operation surface 54a), it is based on the user's preference (contraction strength / contraction and relaxation interval). Thus, by appropriately setting the frequency of the burst wave, the muscle electrical stimulation device 1 can stimulate the muscles more efficiently for each user. Note that the second modification also has the same effects as those of the first embodiment except for the functions and effects related to the mode of changing the frequency of the burst wave.

(Example 2)
In the first embodiment, six electrodes 311 to 313 and 321 to 323 are provided. However, in the second embodiment, as shown in FIG. 17, eight electrodes 311 to 314 and 321 to 324 are provided. In this example, elements equivalent to those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

In the present example, as shown in FIG. 17, the first electrode group 31 is closer to the main body 10 than the third right electrode 313 and farther from the second right electrode 312, and the second right electrode 312. And the third right electrode 313 and the fourth right electrode 314 arranged in an arc or line together with the first right electrode 311, the second right electrode 312 and the third right electrode 313.
The second electrode group 32 includes a second left electrode 322, a third left electrode 323, closer to the main body 10 than the third left electrode 323, and farther from the main body 10 than the second left electrode 322. The fourth left electrode 324 is arranged between the first left electrode 321, the second left electrode 322, and the third left electrode 323 and arranged in an arc or a line.

The first lead portion 38 is connected to the fourth right electrode 314 from the first terminal 451 and the second terminal 452 via the first terminal connection portion 383 and has substantially the same length as the first right path L1. It has a right path L7. Therefore, the difference between the length of the fourth right side path L7 and the average length of the shortest path is less than 20% of the average length.
The second lead portion 39 is connected to the fourth left electrode 324 from the third terminal 461 and the fourth terminal 462 via the second terminal connection portion 393 and has substantially the same length as the first left path L4. It has the 4th left side path | route L8. Therefore, the difference between the length of the fourth left side path L8 and the average length of the shortest path is less than 20% of the average length.
In the case of this example, the same effect as in the case of Example 1 is achieved.

  Moreover, in this example, the 1st electrode group 31 and the 2nd electrode group 32 in the electrode part 30 have four electrodes 311-314 and 321-324, respectively. Thereby, when the rectus abdominis 4 is divided into four in the longitudinal direction (height direction Y), the electrodes can be made to correspond to the sections 4a, so that the rectus abdominis 4 is stimulated more effectively. can do.

  In the present example, the fourth right electrode 314 and the fourth left electrode 324 are located at positions that are line-symmetric with respect to the central axis 10a. Thereby, it becomes the muscular electrical stimulation apparatus 1 more suitable for stimulating the rectus abdominis 4.

(Example 3)
In the third embodiment, instead of the cut portion 17 (see FIG. 1) in the first embodiment, a cut portion 170 is provided and the configuration around the cut portion 17 is changed as shown in FIG. In addition, in this example, the same code | symbol is attached | subjected to the element equivalent to Example 1, and the description is abbreviate | omitted.
In the electrical muscular stimulation device 1 of the third embodiment, as shown in FIGS. 18 and 19, the distal end portion 170 a of the cut portion 170 (the deepest portion of the cut portion 170) is the distal end of the cut portion 17 of the first embodiment. The radius of curvature is larger than that of the portion 17a (see FIG. 1). As shown in FIG. 18, the radius of curvature of the tip portion 170a in plan view can be set to 2.0 mm to 5.0 mm, and is 2.5 mm in this example.

  As shown in FIGS. 19 and 20, the edge portion of the cut portion 170 has a thickness (size in the Z direction) of the electrode support portion 121 that is greater than the peripheral portion 173 which is a region around the edge portion of the cut portion 170. Is also getting bigger. Thereby, the thick part 171 is formed. As shown in FIG. 20, the thickness t2 of the thick portion 171 can be in the range of 1.5 to 5.0 times the thickness t1 of the peripheral portion 173, and is doubled in this example. Yes. Note that the thickness t2 of the thick portion 171 and the thickness t1 of the peripheral portion 173 are both the thickness of the electrode support portion 121 and the thickness of the base material 33. In this example, of the outer edges of the base portions 331 to 333 and 341 to 343, the thickness of the portion excluding the edge portion of the cut portion 170 is smaller than the thickness t <b> 2 of the thick portion 171.

  As shown in FIGS. 19 to 21, a gradually changing portion 172 having a thickness that decreases from the thick portion 171 toward the peripheral portion 173 is formed between the thick portion 171 and the peripheral portion 173. As shown in FIGS. 20 and 21, the widths k1 and k2 of the thick portion 171 can be set to a predetermined size, and are 1.0 mm to 6.0 mm in this example.

  According to the electrical muscular stimulation device 1 of this example, since the radius of curvature of the tip 170a of the cut portion 170 is large, in order to remove the electrical muscular stimulation device 1 from the human body 2 as shown in FIG. In addition, even if the base 341 is peeled off from the outer edge as indicated by an arrow E, the force is less likely to concentrate on the tip 170a (see FIG. 18) of the cut portion 170. As a result, the tip 170a of the notch 170 is prevented from being torn and the base 331 from being broken. Further, the silicon coating applied to the lead portion 39 and the electrode connection portion 395 is prevented from being peeled off. Similarly to the base 341, the bases 331 to 333, 342, and 343 are prevented from tearing the tip 170 a of the cut portion 170 and the bases 331 to 333, 342, and 343 being broken, 39 and the silicon coating applied to the electrode connection portions 385 to 387, 396 and 397 are also prevented from being peeled off.

  Furthermore, according to the electrical muscular stimulation device 1 of this example, since the strength of the tip 170a of the cut portion 170 is increased by having the thick portion 171, when the electrical muscular stimulation device 1 is removed from the human body during use. Even if excessive force is concentrated on the tip 170a of the cut portion 170, the tip 170a of the cut portion 170 is torn, the base portions 331 to 333 and 341 to 343 are further prevented from being peeled off. The

  Furthermore, according to the electrical muscular stimulation device 1 of the present example, since the peripheral portion 173 is thinner than the thick portion 171, the ease of bending of the base portions 331 to 333 and 341 to 343 is ensured. Thereby, the ease of attachment and detachment with respect to the human body of the muscular electrical stimulation apparatus 1 is ensured.

  Furthermore, according to the muscular electrical stimulation device 1 of the present example, the gradual change portion 172 is formed, so that when the muscular electrical stimulation device 1 is removed from the human body, it is between the thick portion 171 and the surrounding portion 173. Concentration of force is alleviated, and tearing of the tip 170a of the cut portion 170, breakage of the base portions 331 to 333 and 341 to 343, and peeling of the silicon coating are prevented.

  Furthermore, according to the electrical muscular stimulation device 1 of the present example, the thickness of the outer edge of the base material 33 and the electrode support part 121 excluding the edge part of the notch part 170 is thinner than the thick part 171. Yes. This prevents tearing of the tip 170a of the cut portion 170, breakage of the base portions 331 to 333 and 341 to 343, and peeling of the silicon coating while ensuring the ease of bending of the base portions 331 to 333 and 341 to 343. Is done.

  In this example, the thick portion 171 is formed by increasing the thickness of the electrode support portion 121. Instead, the thick portion 171 is formed by increasing the thickness of the base material 33. May be. In this example as well, the same effects as in the case of Example 1 are achieved.

(Modification 3)
As shown in FIGS. 23 and 24, the electrical muscular stimulation device 100 of Modification 3 includes a cut portion 170 and a thick portion 171 equivalent to those of Embodiment 3. The electrode has the same configuration as the electrodes 311 and 321 of the third embodiment, but includes two electrodes 311 and 321 that are slightly larger. In the third modification, the same components as those in the third embodiment are denoted by the same reference numerals, and the description thereof is omitted.

As shown in FIGS. 23 and 24, the electrical muscular stimulation device 100 of Modification 3 has the following configurations (1) to (6).
(1) A muscular electrical stimulation comprising a sheet-like base body (base material 33 and electrode support part 121) having a plurality of electrodes 311 and 321 and configured to apply electrical stimulation to the human body from the electrodes 311 and 321 An apparatus 100 comprising:
The base body (base material 33 and electrode support portion 121) is formed with a cut portion 170 cut inwardly between the electrodes 311 and 321 adjacent to each other, and the cut portion 170. A thick-walled portion 171 having a larger thickness than the periphery (peripheral portion 173) of the edge is formed at the edge of the muscle electrical stimulation device 100.
(2) The electrical muscular stimulation device 100 according to (1), wherein the distal end 170a of the cut portion 170 has a curved shape with a radius of curvature of 2.0 mm to 5.0 mm in plan view.
(3) The thickness t2 of the thick portion 171 is in the range of 1.5 to 5.0 times the thickness t1 around the edge (peripheral portion 173), the above (1) or (2 Electrical muscular stimulator 100.
(4) The base body (base material 33 and electrode support part 121) includes a sheet-like base material 33 on which the plurality of electrodes are formed, and an electrode support part 121 laminated on the base material 33. The thickness of the electrode support part 121 in the thick part 171 is any one of the above (1) to (3), which is larger than the thickness in the periphery (peripheral part 173) of the thick part 171. The muscular electrical stimulation apparatus 100 of description.
(5) From the thick part 171 to the base body (the base material 33 and the electrode support part 121), between the thick part 171 and the periphery (peripheral part 173) of the edge part of the cut part 170. The electrical muscular stimulation device 100 according to any one of (1) to (4) above, wherein a gradually changing portion 172 whose thickness decreases toward the peripheral portion 173 is formed.
(6) Of the outer edges of the base body (the base material 33 and the electrode support part 121), the thickness of the part excluding the edge part of the cut part 170 is thinner than the thick part 171. The electrical muscular stimulation device 100 according to any one of 1) to (5).

  Since the muscular electrical stimulation device 100 has the configuration (1) above, and has the thick portion 171, the strength of the tip 170 a of the cut portion 170 is increased. Even when excessive force is concentrated on the tip 170a of the cut portion 170 when it is removed from the base, the tip 170a of the cut portion 170 is torn, the base portions 331 to 333 and 341 to 343 are broken, and the silicon coating is peeled off. Is prevented.

  Since the electrical muscular stimulation device 100 has the configuration of (2) above, the radius of curvature of the tip 170a of the cut portion 170 is increased. Therefore, in order to remove the electrical muscular stimulation device 1 from the human body during use, When peeling from the outer edges of the base portions 331 and 341, it is difficult for the force to concentrate on the tip 170a of the cut portion 170. Thereby, tearing of the front-end | tip 170a of the notch part 170 and the fracture | rupture of each base part 331,341 are prevented. Furthermore, peeling of the silicon coating applied to the lead portions 38 and 39 and the electrode connection portions 385 and 395 is also prevented. Moreover, since the curvature radius of the front-end | tip 170a of the notch part 170 does not become large too much by having the structure of said (2), the depth (cut amount) of the notch part 170 can be ensured, and each base part 331, 341 can be easily bent.

  The radius of curvature of the tip 170a of the cut portion 170 is more preferably 2.5 mm. Thereby, even when the force is excessively concentrated on the tip 170a of the cut portion 170, the tip 170a of the cut portion 170 is torn, the base portions 331 to 333, 341 to 343 are broken, and the silicon coating is peeled off sufficiently. In addition, since the notch 170 is secured to a predetermined size, the bases 331 and 341 are easily bent, and the ease of attaching and detaching the muscular electrical stimulation device 100 to the human body is ensured.

  Since the electrical muscular stimulation device 100 has the configuration (3) described above, the thickness t2 of the thick portion 171 is ensured to be thick, so that the tip 170a of the cut portion 170 is torn and the base portions 331 to 333 are formed. , 341 to 343 are prevented, and the effect of preventing the peeling of the silicon coating is secured, and the thickness of the periphery (peripheral portion 173) of the cut portion 170 is ensured to be thin. Easier to install and remove.

  Since the muscular electrical stimulation device 100 has the configuration (4), the thick portion 171 can be easily formed as compared with the case where the thick portion 171 is formed by increasing the thickness of the base material 33. Become.

  When the muscular electrical stimulation device 100 has the configuration (5), when the muscular electrical stimulation device 100 is removed from the human body, the concentration of force between the thick portion 171 and the peripheral portion 173 is alleviated. Further, tearing of the tip 170a of the cut portion 170, breakage of the base portions 331 and 341, and peeling of the silicon coating are prevented.

  The muscular electrical stimulation device 100 has the configuration of (6) above, while ensuring the ease of bending of the bases 331 and 341, tearing the tip 170a of the notch 170, breaking the bases 331 and 341, The silicon coating is prevented from peeling off.

  And according to the muscular electrical stimulation apparatus 100, since the number of the electrodes 311 and 321 is small compared with the case where there are six electrodes (see FIG. 2), the power consumption per electrode can be increased. The electrodes 311 and 321 are made slightly larger. Thereby, the range which can give electrical stimulation with one electrode spreads, and it becomes easy to stimulate the muscles of large parts, such as an arm part and a thigh.

  In addition, as shown in FIG. 24, the muscular electrical stimulation apparatus 100 includes only one electrode 311 and 321 to which a voltage having the same polarity is applied, but the lead portions 38 and 39 are provided on the main body portion 10. The terminal connection part (the 1st terminal connection part 383 and the 2nd terminal connection part 393) formed along the outer edge is provided. Thereby, even if a part of the lead portions 38 and 39 is damaged, it can be expected that the possibility of energizing the electrodes 311 and 321 can be increased.

DESCRIPTION OF SYMBOLS 1 Muscle electrical stimulation apparatus 10 Main-body part 10a Center line 20 Power supply part 30 Electrode part 311, 312, 313, 321, 322, 323 Electrode 33 Base material 35 Pad 36 Pad sticking part 38, 39 Lead part 40 Control part

Claims (6)

A main body, a power supply housed in the main body, an electrode having three or more electrodes to which power is supplied from the power supply, and the power supply to the electrode is controlled and the main body A muscular electrical stimulation device comprising: a stored control unit; and a lead unit that electrically connects the electrode unit and the control unit, and configured to apply electrical stimulation to the human body from the electrode unit. And
The control unit has a plurality of terminals to which voltages of the same polarity are applied,
The lead portion includes a terminal connection portion that connects the plurality of terminals, and an electrode connection portion that connects the terminal connection portion and the electrode,
The length of the shortest path from each electrode to the terminal is different from the average length of the shortest path by less than 20% of the average length.   The electrical muscular stimulation device according to claim 1, wherein the three or more electrodes are arranged so as to be positioned on the same virtual straight line.   The electrical muscular stimulation device according to claim 1 or 2, wherein two terminals having the same polarity are provided.   The muscular electrical stimulation device according to any one of claims 1 to 3, wherein the electrode section includes three of the electrodes.   The muscular electrical stimulation device according to any one of claims 1 to 3, wherein the electrode section includes four of the electrodes.   The plurality of terminals, the three or more electrodes, and the lead portion are respectively disposed in both one region and the other region divided by a center line passing through the center of the main body portion, and The electrode arranged in the region and the electrode arranged in the other region are configured so that voltages having different polarities are applied to each other. The muscular electrical stimulation apparatus of clause.

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