Abstract: An example medical device for occluding the left atrial appendage includes an expandable member having a first end region, a second end region and an inflation cavity. The medical device also includes a plurality of spine members coupled to the expandable member, the plurality of spine members spaced circumferentially around an outer surface of the expandable member. Additionally, the medical device includes a valve member extending at least partially into the inflation cavity, wherein the plurality of spine members are configured to position the medical device within an opening of the left atrial appendage and wherein the expandable member is configured to expand and seal the opening of the left atrial appendage.

Abstract: An isobaric loudspeaker for use in audio systems is disclosed. The isobaric loudspeaker includes a central mounting bracket, a pair of opposed first and second diaphragm assemblies attached to the mounting bracket, and a single magnet assembly positioned between the first and second diaphragm assemblies for providing a magnetic field in the vicinity of the voice coils of both of the diaphragm assemblies. The magnet assembly presents a central hollow chamber extending between and connecting the opposed speaker assemblies for permitting air to pass freely between the diaphragms of the opposed speaker assemblies.