Electrocardiograph with subject contact detection based on signal difference

摘要

An electrocardiograph includes first and second induction electrodes, a signal difference generation section, an electrocardiographic detection section, a signal applying section, and a contact detection section. The signal difference generation section generates a potential difference between a signal from the first induction electrode and a signal from the second induction electrode as a signal difference. The electrocardiographic detection section detects an electrocardiographic complex of a subject based on the signal difference. The signal applying section applies a first signal to the first induction electrode and a second signal to the second induction electrode. The first signal has a property different from the electrocardiographic complex. The second signal has a property different from the electrocardiographic complex and the first signal. The contact detection section detects a contact state of the subject to the first and second induction electrodes based on the signal difference.

主权项

1. An electrocardiograph comprising:
a first induction electrode inducting a first signal applied thereto; a second induction electrode inducting a second signal applied thereto; a first reference electrode associated with the first induction electrode as an indifferent electrode; a second reference electrode associated with the second induction electrode as an indifferent electrode; a signal difference generation section generating a potential difference between a signal outputted from the first induction electrode and a signal outputted from the second induction electrode as a signal difference; an electrocardiographic detection section detecting an electrocardiographic complex of a subject based on the signal difference generated by the signal difference generation section; a signal applying section applying the first signal to the first induction electrode and the second signal to the second induction electrode, the first signal having a property different from the electrocardiographic complex, the second signal having a property different from the electrocardiographic complex and the first signal; and a contact detection section detecting a contact state of the subject to the first induction electrode and the second induction electrode based on the signal difference generated by the signal difference generation section.