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.
Actually, what Nik said. There's no difference between a saline lock and a heparin lock aside from what's in the line. From my pre-hospital care perspective, we use saline locks...hang a bag of saline or dex and you're ready to go. Hep locks used more in a hospital setting when the IV site needs to remain for some time.