| CPC A61N 7/022 (2013.01) [A61B 1/018 (2013.01); A61B 1/2676 (2013.01); A61M 25/10 (2013.01); A61N 2007/003 (2013.01); A61N 2007/0078 (2013.01)] | 20 Claims |

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15. A system for treating a respiratory disorder by suppression of nerve activity, comprising:
a catheter shaped and sized for insertion into a lumen of a trachea or a bronchus, the catheter including a head comprising one or more ultrasound emitting transducers, each having an emitting surface, wherein said one or more ultrasound emitting transducers are configured to generate and emit non-focused ultrasound energy via said emitting surface;
a balloon inflatable with a fluid medium and configured to surround said head, wherein when inflated said balloon is configured to anchor said head within said lumen and positions said emitting surface of said one or more ultrasound emitting transducers at a desired direction towards a wall of said trachea or said bronchus; and
a shield positioned and configured to block at least a portion of the energy emitted by said one or more ultrasound emitting transducers, wherein said shield comprises an arc shaped cross section which extends along less than 50% of a perimeter of said catheter head.
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