The adapter (1) implantable in a human body has the first electrical terminal (2) with at least one electrical contact (3) for attaching to an implantable electromedical device (4) and the second electrical terminal (5) with at least one electrical contact (6) for attaching to the implantable electromedical signal transmitter (7), in particular the stimulation electrode (26) or the extension (25) or a sensing electrode. The first electrical terminal (2) and the second electrical terminal (5) of the adapter (1) are electrically connected to each other in order to transmit electromedical signals. The adapter (1) includes the housing (8), on which the first electrical terminal (2) and the second electrical terminal (5) are formed. On the housing (8), the recess (9) is formed which is designed to receive and engage around at least a part of the implantable electromedical device (4).
