Hypodermic needle | 合法醫療器材資訊網

Gauge—Gauge[edit]·26G×1⁄2″(0.45×12mm)(brown)·25G×5⁄8″(0.5×16mm)(orange)·22G×1+1⁄4″(0.7×30mm)(black)·21G×1+1⁄2″(0.8×40mm)( ...

Device to inject substances into the circulatory system

A hypodermic needle (from Greek ὑπο- (hypo- = under), and δέρμα (derma = skin)), one of a category of medical tools which enter the skin, called sharps,[1] is a very thin, hollow tube with one sharp tip. It is commonly used with a syringe, a hand-operated device with a plunger, to inject substances into the body (e.g., saline solution, solutions containing various drugs or liquid medicines) or extract fluids from the body (e.g., blood). Large-bore hypodermic intervention is especially useful in catastrophic blood loss or treating shock.

A hypodermic needle is used for rapid delivery of liquids, or when the injected substance cannot be ingested, either becau...