An arrangement for managing a data transmission layer for an implantable, programmable personal medical device, said arrangement comprising the following components: - a plurality of encryption and decryption protocols and authentication protocols as data transmission protocols (15, 15', 15"), which form a plurality of data transmission protocols (15, 15', 15"), - a plurality of implantable programmable personal medical devices, and - a management unit, each data transmission protocol (15, 15', 15") of the plurality of data transmission protocols (15, 15', 15") having a designation which is configured to distinguish the data transmission protocol (15, 15', 15") from at least one other data transmission protocol (15, 15', 15") from the plurality of data transmission protocols (15, 15', 15"), each personal device of the plurality of implantable programmable personal medical devices having a programmable data transmission interface for data transmission from and to the personal device with a data transmission protocol (15, 15', 15") from the plurality of data transmission protocols (15, 15', 15"), a control unit for changing the data transmission protocol (15, 15', 15") of the programmable data transmission interface, wherein the control unit is configured at least to accept a data transmission via the data transmission interface, and an identification, which identifies the personal device, the management unit having a query unit for querying the designation of the data transmission protocol (15, 15', 15") of a personal device on the basis of the identification of the personal device and a memory unit for storing at least one data transmission protocol (15, 15', 15") from the plurality of data transmission protocols (15, 15', 15"), characterised in that the management unit is configured - to make available to an external device from the memory unit a data transmission protocol (15, 15', 15") compatible with the data transmission protocol (15, 15', 15") of the personal device on the basis of the designation query, and/or - to transmit a specific data transmission protocol (15, 15', 15") from the memory unit to the control unit of the personal device on the basis of the designation query in order to change the data transmission protocol (15, 15', 15") of the data transmission interface. - a plurality of encryption and decryption protocols and authentication protocols as data transmission protocols (15, 15', 15"), which form a plurality of data transmission protocols (15, 15', 15"), - a plurality of implantable programmable personal medical devices, and - a management unit, having a programmable data transmission interface for data transmission from and to the personal device with a data transmission protocol (15, 15', 15") from the plurality of data transmission protocols (15, 15', 15"), a control unit for changing the data transmission protocol (15, 15', 15") of the programmable data transmission interface, wherein the control unit is configured at least to accept a data transmission via the data transmission interface, and an identification, which identifies the personal device, having a query unit for querying the designation of the data transmission protocol (15, 15', 15") of a personal device on the basis of the identification of the personal device and a memory unit for storing at least one data transmission protocol (15, 15', 15") from the plurality of data transmission protocols (15, 15', 15"), - to make available to an external device from the memory unit a data transmission protocol (15, 15', 15") compatible with the data transmission protocol (15, 15', 15") of the personal device on the basis of the designation query, and/or - to transmit a specific data transmission protocol (15, 15', 15") from the memory unit to the control unit of the personal device on the basis of the designation query in order to change the data transmission protocol (15, 15', 15") of the data transmission interface.