Before the limited hardware warranty expires, please contact Microsoft Surface Support at 1-866-425-8880 (or replacement number(s) provided by Microsoft) or choose from the.standard business hours. The limited hardware warranty terms for your Microsoft Surface hardware unit are located in the Surface Order Form Terms and Conditions that you agreed to as part of the purchase of your Surface hardware unit.
heparin lock. A device attached to an intravenous catheter to prevent it from clotting. It is used for intermittent administration of fluids or medication. See: heparin lock flush solution; venous access device.
A hep lock is a small tube that a medical professional inserts into the arm or other site on a patient's body. The tube has a catheter on one end. The healthcare provider administers medication or fluids in an efficient manner through the catheter lock, which works by keeping a vein accessible.