Since 2008, Siemens and University of Washington have been working on a very ambitious project. DBAC (Deep Bleeder Acoustic Coagulation). Funded by DARPA (Defense Advanced Research Project Agency), the goal is to use HIFU (High Intensity Focused Ultrasound) to stop bleeding in deep vessels.  Here they report the latest findings in this two part paper.

Part I: development and in vitro testing of a research prototype cuff system

Part II: in vivo testing of a research prototype system