Embodiments of the present invention are directed to a temperature sensing device that can comprise an elastic ring structure. The temperature sensing device can further comprise a transducer device, such as a temperature sensor, and a microprocessor, memory and wireless transmitter. Such an arrangement can incorporate a passive (battery free), battery assisted or active battery powered transponder circuit with temperature measurement capability. The elastic ring, structure can be forced in a spring loaded state when elastically deformed thus becoming retained when disposed in a vaginal vault. In one embodiment, an active RF receiver or an RFID reader is brought in proximity to the temperature sensing and transmitting device arrangement, such as near a womans pelvis from the outside to read the temperature and record it in a Central Processing Unit, CPU, associated with the receiver or RFID reader, such as a portable, handheld computer or wireless device.
