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.
Heparin is also used before surgery to reduce the risk of blood clots. Do not use heparin injection to flush (clean out) an intravenous (IV) catheter. A separate heparin product is available to use as catheter lock flush. Using the wrong type of heparin to flush a catheter can result in fatal bleeding. Slideshow