Abstract: A humidification system can include a heater base, a humidification chamber, and a breathing circuit. A cartridge can be removably coupled to the heater base. The cartridge can include various sensors, probes, sensor wire connectors, heater wire connectors, and/or other features. The cartridge can include features configured to mate with corresponding features on the humidification chamber and the heater base. The cartridge includes a memory, such as an EEPROM, or other suitable storage device. When the cartridge is installed on the heater base, the memory is electrically connected to a processor and/or memory of the heater base. Various models of cartridges can be produced for use with different humidification chambers, breathing circuits, and/or therapies. A connector can be configured to couple an inspiratory conduit to an outlet port of the humidification chamber. The connector can provide a pneumatic connection to the outlet port and an electrical connection to the cartridge.

Abstract: A system and method facilitates continued purchases of goods convenient to a customer, while maintaining a connection to a source provider. The system and methods permit the customer to identify a referring party to receive a discount and provide rewards back to the referring party. The system may for example permit the search, selection, and purchase of goods, track purchases of goods, permit the referring party to communicate with a customer, provide historic purchasing information to either the customer or referring party, present a unique interface to the customer associated with the referring party, interface with one or more systems of the referring party or intermediary such as a distributor to facilitate the selection, purchase, filling, sending, or receipt of the purchased goods, and any combination thereof.