A memory device and a method thereof allow programming and sensing a plurality of memory cells in parallel in order to minimize errors caused by coupling from fields of neighboring cells and to improve performance. Specifically, an apparatus and method is provided for safely accessing anatomical spaces with surfaces to deliver medical devices or media into such spaces, or to remove fluids from such spaces. The sealing member is preferably a lip extending from the vertical wall at an obtuse angle and engaging the pouring pad at an obtuse angle. Smart concrete segments may be employed as transducers to create an electric field in the chutes, with impedance sensors coupled to the transducers being responsive to changes to the electric field in the chutes caused by passing animals. The oxidizer may be an inorganic oxidizer, sulfur, a fluoropolymer, or mixtures thereof. A lumen extending at least in part through the elongate shaft.