Flex-Seal. Pretty expensive (not sure how it compares to other brands). It usually works well if you take care of it, keep the tubing straight, and flush it Q4. They leak small amounts occasionally...
I work in critical care at a hospital with pages of standing orders and protocols for almost everything. Nurses can order ABGs, basic labs, 12 lead, chest x-ray, KUB, swallow evaluation, advance/hold...