Accessory device and assembly including same for providing secure detection of the accessory device using data transfer

An assembly, comprising:

• a main device;
• an accessory device connectable to the main device;
• the accessory device comprising an accessory connector for mating with a device connector of the main device, the accessory connector and the device connector each comprising one or more supply contacts for transmitting electric power from the main device to the accessory device;
• the main device comprising at least one detection device, if wherein upon connecting the accessory device to the main device via mating of the accessory connector and the device connector, the at least one detection device receives and evaluates first accessory data stored by the accessory device and, after receiving and evaluating the first accessory data, receives and evaluates second accessory data stored by the accessory device, and, by a positive evaluation of at least the second accessory data indicating the accessory device is authenticated, enables applying a electrical power at the one or more supply contacts of the device connector, wherein the accessory device and the main device each comprise connecting first and second detect contacts, wherein the first accessory data is transmitted by the connected first detect contacts and the second accessory data is transmitted by the connected second detect contacts of the main device and the accessory device.

A method for connecting an accessory device to a main device, the accessory device including an accessory connector for mating with a device connector of the main device, the accessory connector and the device connector each including one or more supply contacts for transmitting electric power from the main device to the accessory device, and first and second detect contacts for transmitting accessory data from the accessory device to the main device, the main device comprises further including a detection device, the method including:

• transmitting first accessory data stored by the accessory device to the detection device via the first detect contacts when connecting the accessory device to the main device;
• evaluating the first accessory data;
• when the evaluation of the first accessory data is positive indicating the accessory device is authenticated, transmitting second accessory data stored by the accessory device to the detection device via the second detect contacts;
• evaluating the second accessory data;
• when the evaluation of the second accessory data is positive indicating the accessory device is authenticated, enabling application of a supply voltage via the one or more supply contacts of the device connector.

An accessory device for use with a main device that has a main device connector and is configured to perform accessory detection including reading first data via the main device connector, reading second data via the main connector responsive to positive evaluation of the first data by the main device indicating the accessory device is authenticated, and delivering power to the accessory device via the main device connector responsive to positive evaluation of the second data by the main device indicating the accessory device is authenticated, the accessory device comprising:

• a sensor circuit for performing patient monitoring;
• a data store that stores first accessory data and second accessory data;
• and
• an accessory connector including:
• power supply contacts connected with the sensor circuit and configured to connect electrically with the main device connector to receive power delivered to the accessory device from the main device,
• first detect contacts connected with the data store and configured to connect electrically with the main device connector to enable the main device to read first data as the first accessory data stored in the data store, and
• second detect contacts connected with the data store and configured to connect electrically with the main device connector to enable the main device to read second data as the second accessory data stored in the data store;
• wherein the first accessory data read as first data via the main device connector by the main device produces positive evaluation by the main device indicating the accessory device is authenticated;
• and
• wherein the second accessory data read as second data via the main device connector by the main device produces positive evaluation by the main device indicating the accessory device is authenticated.