Patent ID: 7197351

Claim:
A portable electrocardiograph for measuring electrocardiographic waveforms, comprising: a housing having a substantially rectangular parallelepiped shape and including, a grip region positioned on one end of the housing perpendicular to a longitudinal direction of the housing, said grip region gripped by a subject in measurement, and an end face positioned at another end of the housing perpendicular to the longitudinal direction of the housing, the end face pressed against a body surface and the grip region gripped by a hand; a first electrode provided in said grip region; and a second electrode provided on-said end face; wherein said end face includes an electrode region at which said second electrode is positioned and a non-electrode region positioned so as to surround said electrode region and formed to be flat wherein said non-electrode region is provided with a plurality of projections, and wherein, in operation, said electrode region and said non-electrode region are pressed against the body surface.