JP6657683B2 - Low frequency therapy device, pad for low frequency therapy device - Google Patents

Description

  The present invention relates to a low-frequency treatment device and a pad for the low-frequency treatment device.

  2. Description of the Related Art Conventionally, there is a low-frequency treatment device that attaches a pad having a conductive layer to a user's body and supplies a low-frequency pulse current to the body to perform treatment such as relaxing a user's stiff shoulder (Patent Document 1). reference).

  The low-frequency treatment device described in Patent Literature 1 has a body (the upper half) with a pad (the “electrode pad”) sandwiched between a holder (the “lower half” in Patent Literature 1). Is attached. The pads are energized by electrically connecting terminals provided on the holder to the main body and the pads. That is, power is once supplied to the pad from the main body via the holder.

  As described above, in the low-frequency treatment device described in Patent Literature 1, it cannot be used until the three components of the holder, the pad, and the main body are assembled. Therefore, the work required until the use of the low-frequency treatment device is started is complicated.

  Further, in the configuration of the low-frequency treatment device described in Patent Literature 1, since the pad is sandwiched between the holder and the main body, power is once supplied from the main body to the pad via the holder. is there. Therefore, a connection failure may occur in the middle of the redundant power supply path, and power supply to the pad may be unstable.

JP-A-6-339531 (FIGS. 3 and 4)

  Therefore, an object of the present invention is to provide a low-frequency treatment device and a pad portion for a low-frequency treatment device, which can simplify the work required until the start of use and can stably supply power to the pad. .

The present invention provides a low-frequency treatment device including a pad attached to a user's body and supplying a low-frequency pulse current to a user, and a main body supplying a low-frequency pulse current to the pad. In the pad portion, a conductive layer is exposed on at least a part of each of the front and back surfaces, and a back surface is integrated with a pad that is attached to a user's skin via a conductive gel and a holder to which the pad can be attached. Wherein the main body includes a main body side electrode portion that is electrically connected to a conductive layer exposed on a surface side of the pad when the main body is locked to the holder. Has a locked portion locked to the main body , the pad is formed to extend to both sides in the width direction of the holder in the pad portion, and the holder is locked to the main body. The width dimension in the state is A low-frequency electric therapy apparatus, characterized in that it is smaller than the main body portion in the same state.

According to this configuration, since the pad and the holder are integrated, the low-frequency treatment device can be used only by locking the main body to the holder. The “integral” refers to a state in which it is irremovably combined in a normal use state.

Since the width of the holder located on the user side can be reduced, the fit to the body is improved.

  Further, the holder can be made of a nonconductor.

  According to this configuration, when the pad is arranged so as to straddle the spine on the back of the user, it is possible to arrange the pad such that the holder, which is a nonconductor, matches the spine. Thereby, it is possible to suppress the flow of the low-frequency pulse current to the spine and spinal cord of the user. Therefore, since the spine and spinal cord can be prevented from being damaged by the electric current, the low-frequency treatment device can be used safely.

  According to the present invention, since the pad and the holder are integrated, the low-frequency treatment device can be used only by locking the main body to the holder. Therefore, the work required until the start of use of the low-frequency treatment device can be facilitated, and the power supply from the main body to the pad can be stably performed.

It is a perspective view showing the low frequency treatment device concerning one embodiment of the present invention. It is a disassembled perspective view which shows the state which separated the holder and pad and the main-body part in the same low frequency treatment device. It is a top view which shows the pad part in the same low frequency treatment device. It is a bottom view which shows the pad part in the same low frequency treatment device. FIG. 2A is a main part longitudinal cross-sectional view showing a vertical groove portion and a horizontal groove portion of a holder in the low-frequency treatment device, which is a part of the view taken along the line AA in FIG. 2 (pad not shown), and FIG. FIG. 4 is a partial longitudinal sectional view showing a main body side projection of a main body (not shown in the internal structure) of the low frequency treatment device in a part of the view taken along the line BB of FIG. It is a cross-sectional perspective view which shows the vertical groove part and the horizontal groove part of the holder in the low frequency treatment device. It is a principal part longitudinal cross-sectional view which shows the engagement state of the holder and main body part in the same low frequency treatment device. (A) is a top view showing the state where the main part was attached to the holder in the low frequency treatment device, and (B) is a plan view showing the state in the middle of removing the main part from the holder in the low frequency treatment device. is there. (A) is a plan view showing a holder and a pad in a low-frequency treatment device according to another embodiment of the present invention, and (B) is exaggeratedly drawn in the direction of arrows CC in (A). FIG.

  Next, the present invention will be described with reference to an embodiment. The vertical direction in the following description is the vertical direction in the low-frequency treatment device 1 in the state shown in FIG. The low-frequency treatment device 1 of the present embodiment is a cordless type, and includes a pad portion 2 and a main body portion 3 in which a pad 21 and a holder 22 are integrated, and performs treatment by combining the pad portion 2 and the main body portion 3. be able to. The “integral” means a state in which the pad 21 and the holder 22 are irremovably combined in a normal use state.

  The pad 21 is a portion attached to the body of the user. The pad 21 includes a conductive layer 21a that supplies a low-frequency pulse current to a user. The conductive layer 21a is exposed on at least a part of each of the front and back surfaces of the pad 21. In the present embodiment, the conductive layer 21a is exposed on the entire back surface (lower surface), which is the surface of the body side portion 211 facing the body side of the pad 21, and on a part of the surface (upper surface). Attachment of the pad 21 to the user's body is performed by attaching the body side portion 211 to the user's skin via a conductive gel attached to the treatment section 21Y having a surface hatched in FIG. This is done by pasting.

  The pad 21 is formed by laminating a carbon layer as a conductor on a surface of a soft synthetic resin base material (not shown) by, for example, printing, and this carbon layer becomes the conductive layer 21a. The pad 21 has flexibility. The conductive layer 21a is provided for each polarity (+ pole,-pole) at the time of energization. Since the pad 21 may be energized by alternately changing its polarity, the conductive layer 21a dedicated to the positive electrode and the conductive layer 21a dedicated to the negative electrode are not fixedly provided, but the polarity is variable. is there.

  As shown in FIG. 2, the pad 21 includes a mounting portion 21X mounted on the holder 22, and a treatment portion 21Y extending to at least one of the mounting portions 21X and exposing the conductive layer 21a. The pad 21 is formed so as to extend on both sides in the width direction of the holder 22 in the pad portion 2 (see FIGS. 3 and 4). The treatment section 21Y of the present embodiment extends from the mounting section 21X in both polarities. In addition, the conductive layer 21a is exposed on the entire surface of the body side portion 211 that is the bottom surface of the treatment section 21Y.

  The attachment portion 21X has a narrowed shape as compared with the treatment portion 21Y. That is, the width dimension of the attachment part 21X is formed smaller than the width dimension of the treatment part 21Y. Thereby, the holder 22 and the main body 3 can be reduced in size. The conductive layer 21 a is also exposed on the surface (upper surface) of the mounting portion 21 </ b> X of the pad 21 facing the main body 3, and this exposed portion becomes the pad-side electrode portion 212. The pad-side electrode section 212 is formed for electrical connection with the main-body-side electrode section 33. In the present embodiment, the conductive layer 21a corresponding to one pole (for example, + pole) is exposed at one end in the width direction (vertical direction in FIG. 3) of the mounting portion 21X, and the other pole (for example,-pole) is provided at the other end. The conductive layer 21a corresponding to is exposed. Therefore, the conductive layer 21 a of the pad-side electrode portion 212 is exposed at the outer peripheral portion of the pad 21. Exposure of the conductive layer 21a in the pad-side electrode portion 212 can be realized by, for example, peeling off a part of the layer of the pad 21, turning the pad 21 upside down, and overlapping the pad 21 in the thickness direction.

  The holder 22 is a part that holds the pad 21. In the present embodiment, the mounting portion 21X of the pad 21 is made of a hard resin and is held by a double-sided adhesive tape. Thereby, the pad 21 and the holder 22 are integrated. The holder 22 includes a pad holding portion 221 that holds the mounting portion 21X of the pad 21, and wall portions 222 located at both ends of the pad holding portion 221. The holding of the pad 21 is not limited to the double-sided pressure-sensitive adhesive tape, but may be, for example, heat-sealing, gluing or an adhesive.

  Since the holder 22 is made of a hard resin, it is a non-conductor. For this reason, when the pad 21 is arranged so as to straddle the spine on the back of the user, the holder 22 which is a non-conductor can be aligned with the spine, and the treatment section 21Y of the pad 21 can be arranged so as not to overlap the spine. Thereby, it is possible to suppress the flow of the low-frequency pulse current to the spine and spinal cord of the user. Therefore, since the spine and the spinal cord can be prevented from being damaged by the electric current, the low frequency treatment device 1 can be used safely. Further, in the mounting portion 21X of the pad 21, it is not necessary to separately cover a portion overlapping the spine with an insulating member, so that the configuration of the pad portion 2 can be simplified.

  As shown in FIG. 5A, the pad holding portion 221 has a pad contact portion 2211 located closer to the center and a peripheral portion 2212 located closer to the wall 222. As shown, the upper surface of the peripheral portion 2212 is higher than the upper surface of the pad contact portion 2211. Therefore, when the main body 3 is attached to the holder 22, the lower surface 32 of the main body 3 abuts on the peripheral edge 2212.

  As shown in FIG. 2, the pads 21 are stacked so as to contact the upper surface of the pad contact portion 2211. A substantially U-shaped positioning protrusion 2213 protrudes upward from the pad contact portion 2211, and the edge of the window 213 penetrating in the front and back directions of the pad 21 is aligned with the positioning protrusion 2213, so that the pad 21 with respect to the holder 22 is aligned. Can be positioned.

  As described above, the upper surface of the peripheral portion 2212 is higher than the upper surface of the pad contact portion 2211. For this reason, when the main body 3 is attached to the holder 22, the lower surface 32 of the main body 3 abuts on the peripheral portion 2212, and as shown in FIG. The lower surface 32 of the main body 3 does not come into close contact with the lower surface 32, so that a gap can be provided. Therefore, it is possible to prevent the main body 3 from being contaminated by the peeled carbon due to the lower surface 32 rubbing against the carbon layer of the pad-side electrode portion 212. Therefore, the low frequency treatment device 1 can be used beautifully.

  Since the pad 21 is a consumable item, it can be attached to and detached from the main body 3 at the time of replacement or the like. In the present embodiment, the holder 22 is integrated with the pad 21 to form the pad section 2, and the main body 3 is configured to be attached to and detached from the holder 22. The pad 21 is replaced together with the holder 22.

  The main body 3 is a part that supplies a low-frequency pulse current to the conductive layer 21 a of the pad 21 by being attached to the holder 22. A power supply section such as a battery and an electric circuit (substrate) for forming a desired low-frequency pulse current are arranged inside the main body section 3, and switches and a display section are provided outside (1. Not shown except for the part). As shown in FIG. 5B, the main body side electrode portion 33 protrudes from the lower surface 32 of the main body portion 3 facing the holder 22 while being biased by the spring 34 (the main body side electrode portion). The position of the portion 33 is also indicated by a two-dot chain line in FIGS. The body-side electrode section 33 is provided for each polarity.

  Here, as shown in FIG. 4, when the holder 22 is locked to the main body 3, the width W22 of the holder 22 is formed smaller than the width W3 of the main body 3. Since the holder 22 is made of a hard resin, it has poor flexibility. On the other hand, since the pad 21 has flexibility, the flexibility of the pad 21 is hardly hindered by the main body 3 by making the holder 22 narrower than the main body 3. For this reason, since the pad 21 is easy to follow the curved surface of the user's body, the fit of the pad portion 2 to the user's body is good.

  The holder 22 and the main body 3 are formed with an induction engaging portion 4 configured to engage with the holder 22 when the main body 3 is mounted on the holder 22 and to release the engagement when the main body 3 is removed. ing. The guide engaging portion 4 engages both the holder 22 and the main body 3, and regulates a moving direction of the main body 3 with respect to the holder 22 when attaching and detaching the both. More specifically, when the two parts are attached to each other, the guide engaging parts 4 move in the facing direction (downward) D1 indicated by an arrow in FIG. When the two parts are removed, the main body 3 is moved relative to the holder 22 in a direction (lateral direction) D2 (see FIG. 8A) crossing the facing direction D1 to engage the two. It is formed to be released. At the time of the removal, the movement in the direction (upward) opposite to the movement direction at the time of the attachment is suppressed (movement is impossible in the present embodiment). In the present embodiment, the engagement between the holder 22 and the main body 3 is released even if the main body 3 is moved in the clockwise direction, which is the direction opposite to the direction D2, which is the counterclockwise direction in plan view. . As described above, the main body 3 can be disengaged by moving the main body 3 in both lateral directions, and the main body 3 can be disengaged by moving the main body 3 only in one lateral direction. .

  As described above, the guide engaging portion 4 regulates the moving direction of the main body 3 with respect to the holder 22, so that the mounting can be performed with one touch (only the main body 3 is pushed into the holder 22). On the other hand, since the disengagement is released by moving in the direction (lateral direction) D2 crossing the facing direction D1, the disengagement is difficult to be released by an external force other than the user's operation. It is possible to prevent the main body 3 from unexpectedly coming off the holder 22 by moving. In particular, in the present embodiment, the presence of a stopper projection 4221 described later makes it more difficult to release the engagement.

  When detaching the main body 3 from the holder 22, the guide engaging portion 4 rotates the main body 3 with respect to the holder 22 in, for example, a lateral direction D2 indicated by an arrow in FIG. The engagement between the holder 22 and the main body 3 is released. According to this configuration, when detached, the engagement is released by rotating in the facing direction D1, so that the user moves during use and moves from the holder 22 to the main body as compared with the disengagement by simple parallel movement. It is possible to effectively prevent the part 3 from coming off unexpectedly.

  Hereinafter, the guide engaging portion 4 will be specifically described. As shown in FIG. 2, the guide engaging portion 4 in the present embodiment is a projection formed on the main body 3, a main body side projection 41 as a locking portion, and a main body side projection formed on the holder 22. And a groove portion 42 as a locked portion into which 41 is fitted. In this configuration, since the guide engagement portion 4 can be configured by fitting the concave and convex portions, the configuration can be simplified.

  The wall portions 222 of the holder 22 are both ends in the longitudinal direction of the pad holding portion 221, and are located on both sides (both ends of the pad 21 in the width direction (vertical direction in FIG. 3)) that sandwich the main body portion 3 in the direction intersecting the facing direction D1. positioned. The inside of the wall portion 222 has a curved shape so as to allow rotation of the main body portion 3 in the lateral direction D2 at the time of removal. A vertical groove 421 and a horizontal groove 422 are formed on the inner surface of the wall 222 as the groove 42. The vertical groove 421 is formed in the vertical direction that is the direction D1 directly opposite to the holder 22 and the main body 3, and is open at the top. The horizontal groove 422 is formed in a horizontal direction intersecting with the vertical direction, and at least one end in the horizontal direction is open. In the present embodiment, the vertical groove 421 and the horizontal groove 422 are orthogonal to each other. Further, the lateral groove 422 of the present embodiment is open at both ends in the lateral direction.

  The vertical cross-sectional shape at the intersection of the vertical groove 421 and the horizontal groove 422 is the shape shown in FIG. The eaves 423 extending inward (in the direction of the center of the pad holding portion 221) is located at an upper portion of the vertical groove 421. An introduction slope 4231 is formed above the eaves 423. The introduction slope 4231 is a gently curved slope that descends inward. A horizontal surface 4232 is formed below the eaves portion 423. The horizontal groove 422 is formed so that the vertical dimension is slightly larger than the vertical dimension of the main body side projection 41 formed on the main body 3. Thus, the main body-side projection 41 is movable along the longitudinal direction of the lateral groove 422. An engagement protrusion 424 projecting upward from the lower surface of the horizontal groove 422 is formed at a portion where the vertical groove 421 and the horizontal groove 422 intersect.

  As shown in FIG. 6, the horizontal groove portion 422 is rotated from the state in which the main body 3 is mounted on the holder 22 to the holder 22 in the lateral direction D2, for example. Stopper projections 4221 and 4221 are formed as limiting portions. The stopper projections 4221 and 4221 are located on both lateral sides of the main body side projection 41 in the attached state. The main body side projection 41 to be moved abuts against each stopper projection 4221. Due to this contact, the movement of the main body 3 in the direction in which the engagement is released is restricted. In the present embodiment, since the main body 3 can be moved in both lateral directions to be disengaged, the stopper projections 4221 are formed at two places. However, the main body 3 is moved only in one lateral direction. In the case where the engagement can be released, the stopper projection 4221 may be formed only at one position.

  Then, when the main body 3 is rotated beyond a certain force, the main body side projection 41 gets over the stopper projection 4221. Then, the restriction on the movement is released, and the main body 3 can be rotated in the lateral direction D2 shown in FIG. 8A, and as a result, it can be made as shown in FIG. 8B.

  As shown in FIG. 6, a slope 4221a is formed inside each stopper projection 4221 (on the side facing the main body side projection 41). For this reason, since the main body side projection 41 comes into contact with the slope 4221a to restrict the movement, the main body side projection 41 can ride over the stopper projection 4221 and be disengaged without requiring excessive force. .

  As described above, since the stopper protrusions 4221 and 4221 are formed in the lateral groove 422, the rotation of the main body 3 in the lateral direction D2 can be limited by the stopper protrusions 4221. Therefore, the engaged state can be reliably maintained. Further, at the time of the overcoming, the user hears a clicking sound and a tactile sensation (click feeling), so that the user can know that the main body 3 is no longer in the engaged state. Accordingly, the click feeling is transmitted to the user even when the main body 3 is turned by mistake, and if the turning is erroneous, the user is prompted to reattach the main body 3. be able to.

  On the other hand, the main body 3 has a main body side projection 41 formed on the side surface 31 of the holder 22 facing the wall 222, the main body side projection 41 being capable of moving along the vertical groove 421 and moving along the horizontal groove 422 of the holder 22. ing. According to this configuration, the vertical groove portion 421 and the horizontal groove portion 422 are provided on the holder 22 which is basically immobile when mounting, and the main body portion side projection 41 is formed on the main body portion 3 which is the side to be moved. . Therefore, alignment of both is easy.

  The vertical cross-sectional shape of the main body portion side projection 41 is the shape shown in FIG. A horizontal surface 411 is formed on the upper portion of the main body side projection 41, and a horizontal surface 412 and a tapered surface 413 are formed on a lower portion. The lower horizontal surface 412 abuts on the engagement protrusion 424 when the main body 3 is attached to the holder 22. Further, the tapered surface 413 is a flat inclined surface such that the amount of projection of the main-unit-side projection 41 decreases as going downward.

  In addition, as shown in FIG. 2, the main body portion side projection 41 is located below the vertical center of the side surface 31. For this reason, the main body side projection 41 is located at an asymmetric position in the vertical direction. For this reason, even if the user attempts to mount the main body 3 on the holder 22 with the front and back wrong, the user cannot mount the main body 3 because the position (the vertical position) of the main body side projection 41 does not match the vertical groove 421 on the holder 22 side. . For this reason, erroneous mounting can be suppressed.

  When the main body 3 is attached to the holder 22, the tapered surface 413 of the main body side projection 41 and the eaves 423 of the vertical groove 421 abut. When the main body portion-side projection 41 is aligned with the eaves portion 423 and the main body portion 3 is pressed from above, the eaves portion 423 pressed by the main body portion-side projection 41 is elastically deformed because the holder 22 is made of resin. The main-body-side projection 41 moves below the portion 423, that is, inside the lateral groove 422. As a result, the horizontal surface 412 below the main-body-side protrusion 41 comes into contact with the engagement protrusion 424. In this state, the main-body-side projection 41 is sandwiched between the horizontal surface 4232 of the eaves section 423 and the engagement projection 424 to be in the engagement state shown in FIG. When the main-body-side projection 41 moves, the elastic deformation of the eaves portion 423 returns. At this time, since a clicking sound and a tactile sensation (click feeling) are transmitted to the user, the user can know that the attachment has been correctly performed.

  As shown in FIGS. 5A and 7, the eaves portion 423 is formed such that the vertical dimension is reduced (stiffness is reduced) as it goes inward. Therefore, the main body-side protrusion 41 can be moved into the lateral groove 422 without pushing the main body 3 downward with a large force.

  In the engagement state shown in FIG. 7, even if the main body side projection 41 is to be moved upward, the horizontal plane 4232 of the eaves section 423 and the horizontal plane 411 of the main body side projection 41 come into contact with each other, and therefore cannot be moved. . Thereby, the main body 3 can be reliably engaged with the holder 22.

  Then, in order to release the engaged state, for example, the main body 3 is rotated counterclockwise as shown in FIG. It can be moved in the longitudinal direction of the portion 422 and escape from the lateral groove 422 as shown in FIG. In the present embodiment, the main body-side projection 41 can be made to escape from the lateral groove 422 even when rotated clockwise in the opposite direction to the above. When the main body side projection 41 comes off from the engagement projection 424, the vertical dimension based on the main body side projection 41 in the lateral groove 422 can be provided by an amount corresponding to the absence of the engagement projection 424. Can be rotated lightly. In the state shown in FIG. 8B, since the engaged state is released, the main body 3 can be removed from the holder 22 by moving the main body 3 upward.

  Here, the main-body-side electrode portion 33 is provided at a position different from the main-body-side protrusion 41 as shown by broken lines in FIGS. On the other hand, as shown in FIG. 2, the pad 21 is held by the holder 22 at the mounting portion 21 </ b> X such that the outer peripheral edge 21 b is substantially along the inner edge 2221 of the wall portion 222 of the holder 22. The main-body-side electrode section 33 supplies a low-frequency pulse current by contacting the pad-side electrode section 212 of the pad 21 located on the holder 22 with the main body section 3 attached to the holder 22.

  In this manner, the holder 22 and the main body 3 can be engaged by the guide engaging portion 4 in a state where the main body side electrode 33 is in contact with the pad side electrode 212. Therefore, the contact between the two electrode portions can be strengthened. Therefore, the conduction state between the pad 21 and the main body 3 can be stabilized.

  Further, the guide engaging portion 4 is in charge of the physical connection between the holder 22 and the main body 3, and the main body side electrode portion 33 is in charge of the electric connection between the pad 21 and the main body 3. For this reason, it is possible to supply a stable current as compared with a configuration that combines both connections, for example, by using a snap member that is made of metal and engages with the concave and convex portions, and performs both fitting and conduction. Furthermore, since the guide engaging portion 4 and the main body side electrode portion 33 are close to each other, as long as the engagement state in the guide engaging portion 4 is maintained, the main body side electrode portion 33 and the pad side electrode portion 33 are maintained. The contact state with 212 is not easily damaged, and a low-frequency pulse current can be supplied reliably.

  The pad 21 has a curved portion 214 on the outer peripheral edge 21b of the attachment portion 21X, which substantially matches the curved shape of the wall portion 222 of the holder 22. As described above, the pad 21 having the curved outer edge along the rotating direction at the time of removal may cause the pad 21 to be caught by the guide engagement portion 4 such as the main body side projection 41 at the time of removal. Can be controlled and used comfortably.

  Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various changes can be made without departing from the gist of the present invention.

  The pad 21 of the above embodiment is obtained by laminating a carbon layer on the surface of a soft synthetic resin base material, for example, by printing, and this carbon layer is used as the conductive layer 21a. However, the conductive layer 21a is not limited to this configuration. For example, as shown in FIGS. 9A and 9B, the conductive layer 21a can be formed of a single layer on both sides. Here, in the case where the carbon layer is formed on the front and back surfaces of the base material in the conductive layer 21a in the embodiment, a configuration for electrically connecting the carbon layers on the front and back surfaces is required in order to make the front and back surfaces conductive. Alternatively, a carbon layer may be formed on one surface, and a part of the carbon layer may be turned over. In these configurations, there is a possibility that conduction may become unstable due to cracks in the front and back electrical connection portions and the folded portion of the carbon layer. On the other hand, in the pad 21 of this modified embodiment, since the conductive layer 21a is integrated on the front and back, there is an advantage in that the electrical connection between the front and back is stably performed without the need for the configuration for electrically connecting.

  The conductive layer 21a in this modified embodiment can be formed, for example, by attaching conductive particles such as carbon particles to fibers constituting the fiber sheet (paper or the like). The pad 21 thus formed is in a state in which conductive particles are dispersed on at least the surface of the fibers constituting the fiber sheet. The fibers constituting the fiber sheet may be arranged regularly (for example, in a net shape) as viewed from the front and back surfaces, or may be arranged irregularly. The conductive layer 21a can be formed by dispersing conductive particles in a resin layer, in addition to the fiber sheet. In addition, a single conductive fiber can be sewn to form a sheet. In particular, when the conductive layer 21a is made of a fiber sheet, the pad 21 can be formed flexibly, so that the pad 21 can easily conform to the body of the user, which is advantageous in that the usability can be improved. is there. The conductive layer 21a may be formed by laminating two or more layers in addition to a single layer on the front and back.

  As shown in FIG. 9B, the pad 21 of this modification can cover the surface (upper surface) other than the pad-side electrode portion 212 with the non-conductive cover layer 21c. Since the conductive layer 21a is separated by polarity, the positive-electrode-side conductive layer 21a and the negative-electrode-side conductive layer 21a are physically connected by the cover layer 21c. On the other hand, on the back surface (lower surface), the entirety of the conductive layer 21a is exposed, and a conductive gel can be attached to the treatment section 21Y.

  Further, the pads 21 may be formed separately for each polarity. In the above-described embodiment, the exposed portions of the conductive layer 21a formed for electrical connection with the main body side electrode portion 33 are located at both ends in the width direction of the mounting portion 21X. The position is not limited, and may be another position such as the center in the width direction as long as the position overlaps the main body 3 at the time of attachment. Further, contrary to the above-described embodiment, a protrusion may be formed on the holder 22 and a groove may be formed on the main body 3.

  In addition, the guide engaging portion 4 of the above-described embodiment includes a wall portion 222 (groove portion 42) located at both longitudinal ends of the pad holding portion 221 of the holder 22, and a side surface of the main body portion 3 facing the wall portion 222 of the holder 22. 31 (the main body-side projection 41). However, the guide engaging portion 4 is not limited to this, and may be formed at another position.

DESCRIPTION OF SYMBOLS 1 Low frequency treatment device 2 Pad part 21 Pad 21a Conductive layer 22 Holder 3 Main part 33 Main part side electrode part 4 Induction engaging part 41 Locking part, Main part side projection 42 Locked part, groove part

Claims (2)

In a low-frequency treatment device comprising a pad attached to a user's body and supplying a low-frequency pulse current to the user, and a main body supplying a low-frequency pulse current to the pad,
In the pad portion, a conductive layer is exposed on at least a part of each of the front and back surfaces, and a back surface is integrated with a pad that is attached to a user's skin via a conductive gel and a holder to which the pad can be attached. In preparation for
The body portion includes a locking portion that locks the holder, and a body portion-side electrode portion that is electrically connected to a conductive layer exposed on a surface side of the pad in a locked state with the holder,
The holder includes a locked portion that is locked to the main body,
The pad is formed to extend on both sides in the width direction of the holder in the pad portion,
The low frequency treatment device according to claim 1, wherein the holder has a smaller width dimension in a state where the holder is locked to the main body than in the main body in the same state.   The low frequency treatment device according to claim 1, wherein the holder is made of a non-conductor.

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