The coronary sinus orifice (opening) is just superior to the septal leaflet of the tricuspid valve. The coronary sinus orifice is also known as the ostium of the coronary sinus, and is guarded by the Thebesian valve.
It drains into the right atrium on the posterior, inferior surface, medial to the inferior vena cava opening.
Agency Reviews Patent Application Approval Request for "Method and Apparatus for Determing the Coronary Sinus Vein Branch Accessed by a Coronary Sinus Lead"
Oct 11, 2012; By a News Reporter-Staff News Editor at Politics & Government Week -- A patent application by the inventors Yu, Yinghong...
US Patent Issued to Cardiac Pacemakers on Feb. 1 for "Method and Apparatus for Determining the Coronary Sinus Vein Branch Accessed by a Coronary Sinus Lead" (Minnesota Inventors)
Feb 04, 2011; ALEXANDRIA, Va., Feb. 4 -- United States Patent no. 7,881,794, issued on Feb. 1, was assigned to Cardiac Pacemakers Inc. (St....