A lead wire used in a pacemaker is provided. The lead wire includes a lead and an electrode located on one end of the lead. The electrode is electrically connected with the lead and used to contact with an organ. The electrode includes a carbon nanotube structure consisting of at least one carbon nanotube film. The carbon nanotube structure has an end being away from the lead, the end of the carbon nanotube structure is contacted with the organ and used as stimulation electrode. The whole carbon nanotube structure is used as a sensing electrode. The invention also provides the pacemaker using the lead wire.本發明提供一種起搏器電極線，其包括一導線以及一電極頭，該電極頭設置於所述導線一端，並與該導線電連接，且用於與一生物器官接觸；其中，所述電極頭包括一奈米碳管結構，該奈米碳管結構由至少一個奈米碳管膜構成，該奈米碳管結構具有一端部，該奈米碳管結構的端部遠離所述導線設置並與所述生物器官線接觸，該奈米碳管結構的端部為一刺激電極，該整個奈米碳管結構為一感測電極。本發明還提供一種應用上述電極線之起搏器。
