French and gauge medical equipments

French and gauge medical equipments

A French (Fr) is a unit of measure of diameter that is often applied to catheters. 1 Fr is equal to one third of a millimeter. A 6 Fr catheter is therefore 2 mm in diameter. A gauge is also a unit used to measure diameter where higher gauge values are associated with smaller diameters.

Although it can be used to measure catheters, it is frequently used for needles. For example, a 21-gauge needle is approximately 0.03 inches in outer diameter, whereas an 18-gauge needle is 0.05 inches in outer diameter.

15585

Sign up to receive the trending updates and tons of Health Tips

Join SeekhealthZ and never miss the latest health information

15856