Low-frequency treatment device, main body portion for low-frequency treatment device, pad for low-frequency treatment device, combination of pad and holder for low-frequency treatment device

A main body portion for a low-frequency treatment device including:

• a pad configured to be attached to a body of a user and to supply a low-frequency pulse current to the user, the pad including a pad-side electrode portion;
• and a holder configured to hold the pad, the main body portion being configured to be attached to a holder and comprising:
• a main body portion-side electrode portion configured to be connected to a pad-side electrode portion for electrical conduction and to supply a low-frequency pulse current thereto,
• wherein the main body portion is configured to engage with the holder, with a clearance of a predetermined distance therebetween for arranging the pad,
• the electrical conduction is established due to the main body portion-side electrode portion coming into contact with the pad-side electrode portion in the clearance so that the pad-side electrode portion and the main body portion-side electrode portion directly contact each other, and
• the main body portion-side electrode portion can perform movement in a direction of approaching and separating from the pad-side electrode portion and is biased in an approaching direction,
• the electrical conduction is established in a range in which the movement is possible, and
• the holder includes:
• a pad holding portion configured to hold the pad on its upper surface;
• a pressing portion that is arranged on the pad-side electrode portion on a side opposite the main body portion-side electrode portion, the pressing portion being able to protrude and recede with respect to the pad holding portion;
• and
• a biasing portion that biases the pressing portion in a direction of protruding from the pad holding portion.

A pad for a low-frequency treatment device, configured to be attached to a body of a user and to supply a low-frequency pulse current to the user, the pad comprising:

• a pad-side electrode portion,
• wherein the pad is configured to be held by a holder,
• a main body portion is attached to the holder,
• the main body portion includes a main body portion-side electrode portion configured to be connected to the pad-side electrode portion for electrical conduction and to supply a low-frequency pulse current thereto,
• the holder and the main body portion are engaged with a clearance of a predetermined distance therebetween for arranging the pad,
• the electrical conduction is established between the pad-side electrode portion and the main body portion-side electrode portion due to coming into contact with each other in the clearance so that the pad-side electrode portion and the main body portion-side electrode portion directly contact each other,
• one electrode portion among the pad-side electrode portion and the main body portion-side electrode portion can perform movement in a direction of approaching and separating from the other electrode portion and is biased in an approaching direction,
• the electrical conduction in the one electrode portion is established in a range in which the movement is possible,
• the electrical conduction in the main body portion-side electrode portion is established due to its leading end portion coming into contact with the pad-side electrode portion,
• the pad-side electrode portion is composed of a planar conductor, and
• the holder includes:
• a pad holding portion configured to hold the pad on its upper surface;
• a pressing portion that is arranged on the pad-side electrode portion on a side opposite the main body portion-side electrode portion, the pressing portion being able to protrude and recede with respect to the pad holding portion;
• and
• a biasing portion that biases the pressing portion in a direction of protruding from the pad holding portion.

A combination of a pad and a holder for a low-frequency treatment device, comprising:

• a pad configured to be attached to a body of a user and to supply a low-frequency pulse current to the user, the pad including a pad-side electrode portion;
• and
• a holder that holds the pad,
• wherein the holder is configured to attach to a main body portion, and the main body portion includes a main body portion-side electrode portion configured to be connected to the pad-side electrode portion for electrical conduction and to supply a low-frequency pulse current thereto,
• the holder and the main body portion are configured to engage with a clearance of a predetermined distance therebetween for arranging the pad,
• the electrical conduction is established between the pad-side electrode portion and the main body portion-side electrode portion due to coming into contact with each other in the clearance so that the pad-side electrode portion and the main body portion-side electrode portion directly contact each other,
• one electrode portion among the pad-side electrode portion and the main body portion-side electrode portion can perform movement in a direction of approaching and separating from the other electrode portion and is biased in an approaching direction,
• the electrical conduction in the one electrode portion is established in a range in which the movement is possible,
• the main body portion can be removed from the holder by being rotated in plan view with respect to the holder,
• the holder includes a rotation restricting portion that restricts rotation of the main body portion in the attached state,
• the pad-side electrode portion is formed such that if the main body portion is at a position at which rotation is restricted by the rotation restricting portion, the electrical conduction is established, and if the main body portion is not at a position at which rotation is restricted, the electrical conduction is not established due to the pad-side electrode portion and the main body portion-side electrode portion being separated from each other, and
• the holder includes:
• a pad holding portion configured to hold the pad on its upper surface;
• a pressing portion that is arranged on the pad-side electrode portion on a side opposite the main body portion-side electrode portion, the pressing portion being able to protrude and recede with respect to the pad holding portion;
• and
• a biasing portion that biases the pressing portion in a direction of protruding from the pad holding portion.