The demarcation point (or demarc or Network Interface Device (NID) for short) serves several purposes: â¢It is the point that defines the end of the telephone company's wiring, and the beginning of your wiring. â¢It defines where the telephone company's responsibility for maintenance ends, and your responsibility begins.
This device helps your heart pump blood to the rest of the body. What is a Left Ventricular Assist Device (LVAD)? A left ventricular assist device is a small pump that helps circulate your blood when your heart becomes too weak to do its job effectively. The pump enables your heart to pump more blood with less work.
Stop Afib. Watchman Device as Alternative to Warfarin or Coumadin. The results of the Watchman device trial, called PROTECT-AF, have just come out of the American College of Cardiology 2009 annual meetings in Orlando. The Watchman (Atritech) is a device that closes off the left atrial appendage (LAA) to minimize the risk of stroke.