OSF invests in blood loss monitoring technology Oct 24, 2018 | Health Tech, Hospitals, Top Stories OSF Ventures is investing in Gauss Surgical, the developer of a new technology that helps surgeons and other clinicians estimate blood loss in real time.To access this content, you must purchase 1 Year Health News Illinois Subscription or 1 Year Group Subscription - Up to 5 Users, or log in if you are a member.