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.
: ventricular assist device. Known technically as VADs, or ventricular assist devices, these implants can sometimes rescue even the most desperate patients. âGeoffrey Cowley et al., Newsweek, 25 June 2001