Electrotherapeutical instrument with output electrode open circuit and short circuit detection function and detection method

Abstract

The invention discloses an electrotherapeutical instrument with an output electrode open circuit and short circuit detection function and a detection method. The electrotherapeutical instrument comprises a control module, a signal modulation module, an intensity adjustment module, an output module and an output electrode connected in order and also comprises an open circuit detection unit and a short circuit detection unit. Through comparing output module driving front stage and back stage voltage, output electrode open circuit and short circuit states are identified. The electrotherapeutical instrument has the output electrode open circuit and short circuit detection function, when the open circuit and short circuit are detected, and the output of the electrotherapeutical instrument is automatically stopped so as to avoid the damage to a treated user and the electrotherapeutical instrument.

Description

technical field [0001] The invention relates to the field of medical technology, in particular to an electrotherapy instrument and a detection method with the function of detecting open and short circuits of output electrodes. Background technique [0002] Conventionally, an electrotherapy device generally has one or more output channels, and each output channel is composed of positive and negative electrodes. During treatment, the electrodes are attached to the desired part of the user, and the set pulse wave is applied to the electrodes to provide the user with Delivers healing pulses. When the pulse wave is applied, in order to avoid the high voltage or strong energy pulse wave step-jump acting on the user, causing the user to feel electric shock at the contact part of the electrode, the electrotherapy instrument generally has an output blocking function, that is, when in use, its The output intensity must be set at zero to start the pulse output, so as to ensure that th...

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Problems solved by technology

[0003] The above-mentioned output blocking function effectively avoids the electric shock caused by the step change of the pulse wave energy when the user and the electrode are in contact with the electrode when the treatment is started. According to clinical investigations, it is known that the output electrode of the user receives the electrotherapy device during treatment. Often there will be cases of falling off. At this time, the general method is to directly attach the fallen output electrode to the original position. However, after the output electrode falls off the treatment part and the positive and negative poles of the output channel are disconnected, the output channel still maintains the original position. The set voltage or energy, generally speaking, the voltage or energy at this time is relatively strong, directly restoring the output electrode in this state to its original position will obviously cause the user to experience electric shock at the contact part of the electrode

[0004] Secondly, the output electrodes of the electrotherapy device often have short-circuits during the working process. At present, the products on the market have not taken preventive or protective measures for short-circuiting of the output electrodes. As we all know, a short circuit will cause the current of the output part of the circuit to increase, resulting in an increase in temperature. It may even cause damage to circuit components or cause unexpected component performance degradation, which will affect the safety, stability and reliability of the product, and may eventually cause unexpected harm to users during use

[0005] It can be seen from this that the electrotherapy instruments in the current market have not been designed to have the function of detecting the open and short circuit of the output electrodes, so as to prevent the user from causing electric shock and unexpected injuries.

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