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Birmingham gauge is a system to measure wire thickness, tube diameter and hypodermic needle size. It ranges from 5 to 36, with smaller numbers indicating larger sizes. See chart for nominal outer diameter and wall thickness of needles by gauge.
The French catheter scale is a system to measure the size of a catheter by the outer diameter in millimetres. It is defined as 1 Fr = 1/3 mm, and thus the diameter of a round catheter in millimetres can be determined by dividing the French size by 3.
A peripheral venous catheter is a small, flexible tube placed into a peripheral vein for intravenous therapy. Learn about its use, complications, sizes, history and images.
Venipuncture is the process of obtaining blood from a vein for various purposes, such as testing, treatment, or donation. Learn about the equipment, techniques, and risks involved in venipuncture, as well as the different types of blood collection tubes and additives.
Learn about the history, types, and uses of hypodermic needles, thin hollow tubes with sharp tips that are used to inject or extract substances from the body. Find out how they are made, how they work, and how they are related to medicine, research, and safety.
A Tuohy needle is a curved hypodermic needle for inserting epidural catheters. Learn about its history, types, uses, and complications from this article.
A central venous catheter (CVC) is a catheter placed into a large vein for various medical purposes. Learn about the indications, contraindications, complications, and types of CVCs from this comprehensive article.
While the standard needle size for vaccination is 1 inch, it's recommended that women over 200 lbs. and men over 260 lbs. get shots with 1.5-inch needles.