The embolic coil includes a microcoil and an elongated wire electricallyconnected to the microcoil for acceleratingembolization of an aneurysm into which the embolic coil is placed. Themicrocoil is formed of a first metallic material having a firstreduction potential, and the elongated wire is formed of a second metallicmaterial having a second reduction potential lower thanthe first reduction potential of the first metallic material.
