Patent ID: 7085598

Claim:
A biological electrode comprising: a conductive member, adapted to be attached onto a living tissue to detect a bioelectrical signal; a retainer, which retains the conductive member on the living tissue; a lead member, partly brought into contact with the conductive member to lead out the bioelectrical signal; a first waterproof sheet and a second waterproof sheet that seal the lead member in a watertight manner, while exposing a first exposed portion of the lead member from which the biological signal is led out and exposing a second exposed portion of the lead member that is in contact with the conductive member; and wherein the lead member comprises a base portion that contacts the conductive member and an elongated lead portion extending away from the base portion of the lead member; wherein the first waterproof sheet comprises a base portion that extends beyond the base portion of the lead member and an elongated portion extending away from the base portion of the first waterproof sheet; and wherein the second waterproof sheet comprises a base portion that extends beyond the base portion of the lead member with an opening for exposing the second exposed portion of the lead member to the conductive member and an elongated portion extending away from the base portion of the second waterproof sheet.