SU839481A1 - Device for measuring difference of bioelectrical potentials - Google Patents

Description

(54) DEVICE FOR MEASURING THE DIFFERENCE OF BIOELECTRIC POTENTIALS

The invention relates to a medical technician, namely to devices for. measurement of biopotentials. A device for measuring the difference in bioelectric potentials is known, which contains measuring electrodes and a recording device 1. A disadvantage of this device is the dependence of the measurement results on the input resistance of the device. The purpose of the invention is to ensure the independence of the measurement results from the input resistance of the device. This goal is achieved by introducing a capacitor and a switch for switching the capacitor plates from the measuring electrodes to the input of the recorder and vice versa in a device for measuring the difference in bioelectric potentials containing measuring electrodes and a recording device. The drawing shows a structural diagram of the proposed device for measuring the difference in bioelectric potentials. The device contains measuring electrodes 1 and 2, a registering device 3, a capacitor 4 and a switch 5 for switching plates of a capacitor 4 from measuring electrodes 1 and 2 to the input of a recording device 3 and vice versa. The device works as follows. biological object in all modes galvanically separated from. registering device 3, which ensures the electrical safety of the device and excludes the current Impact on the biological object from the device. In the initial position, the switch 5 connects the capacitor 4 to the measuring electrodes 1 and 2, while the capacitor is charged to a voltage equal to the potential difference between the electrodes 1 and 2. Then switch 5 switches the capacitor 4 (manually or automatically) to the input of the device 3, and the capacitor is discharged, with the recorded bioelectric potentials between electrodes 1 and 2. The proposed device for measuring 1 and the difference in bioelectric potentials ensures that the measurement results are independent of input This device has a single resistance, which excludes shunting of a bioobject when measuring biopotentials.

Invention Formula

A device for measuring the difference in bioelectric potentials, containing measuring electrodes and a regimentation device, characterized in that, in order to ensure the independence of the measurement results from the input resistance of the device, a capacitor and a switch are inserted into it.

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designed to switch the capacitor plates from the measuring electrodes to the input of the recording device and vice versa.

Sources of information taken into account in the examination

1. Ut Lysh P, I Radioelectronic apparatus for the study of physiology Energy, 1969,

processes, M., s, 31, 212-217.

Claims (1)

Claim A device for measuring the difference in bioelectric potentials, containing measuring electrodes and a recording device, characterized in that, in order to ensure the independence of the measurement results from the input resistance of the device, a capacitor and a switch are introduced into it, designed to switch the capacitor plates from the measuring electrodes to the input of the recording appliance and vice versa.