| 摘要 |
An inflatable ear piece (4) is formed for insertion and placement in an external auditory canal (2). The ear piece has an inflatable balloon (7) that may be selectively in- flated and deflated. When the balloon is inflated, it expands and braces against the walls of the auditory canal (2). The ear piece has a receiver module (5) with a sound generator (12) and a connection to an exterior device (e.g., a hearing aid, an MP3 player, a cell phone). The sound waves generated in the receiver module are guided to the ear drum (3) via a carrier (6) which also holds the balloon (7). A pump and valve assembly is integrated in the receiver module, for in- flating, or selectively deflating, the balloon (7). The pump is connected by way of a collection cup (12), which surrounds the forward end of the receiver (5), through the small gaps formed by a snap-on connection between the receiver (5) and the carrier (6), and through one or more inflation openings (9) issuing into the balloon (7). This fluidic connection is sealed relative to the interior of the auditory canal (2) and to the exterior by way of a sealing assembly (16, 17, 20). The receiver module (5) and the balloon module (6, 7) are rotationally symmetrical relative to one another, that is, they may be connected in any rotational orientation, and no rotational alignment of the parts is required for connecting the balloon module (6, 7) with the receiver module (5, 12).
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