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.
1 Doctors or other healthcare professionals must inject a patient with heparin. 2  Patients cannot use heparin themselves. 3  LMWH, such as enoxaparin, is made from heparin. 4  It is also available as a liquid injectable solution used to prevent blood clots, but it is used differently than heparin.