BOTHELL, Wash.--(BUSINESS WIRE)--SonoSite, Inc. (Nasdaq:SONO), the world leader in hand-carried ultrasound, today introduced the S-Nerve procedural tool, the first ultrasound device custom-designed to support the specific needs of anesthesiologists who perform regional anesthesia. SonoSite is showcasing the new S-Nerve product at the American Society of Anesthesiologists’ (ASA) annual meeting in San Francisco and expects to begin customer shipments in the fourth quarter of this year.