Implantable wireless sensor assemblies and methods for monitoring physiological parameters within living bodies. Such sensor assembly includes a sensing device with a housing having an internal cavity, a transducer and electrical circuitry within the cavity, and an antenna that is within the cavity or outside the housing. The sensor assembly further includes a housing portion in which the transducer, the electrical circuitry, and the antenna are not located, and anchoring elements for securing the sensing device within a living body. The housing portion is separately formed and directly attached to a distal end of the housing, or is integrally formed as a discrete region of the housing at the distal end thereof. The anchor elements surround a coupling feature of the housing portion but does not surround the transducer or the antenna of the sensing device.
