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.
A ventricular assist device (VAD), also known as a heart pump, is a mechanical device that helps pump blood from the heart to the rest of your body. A VAD can be implanted in the chest or worn outside the body. If it is implanted, surgery is done to place it in the chest area. The pump part of the VAD is placed in a small space in your upper abdomen.