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Pravaz designed a hypodermic needle measuring 3 cm (1.18 in) long and 5 mm (0.2 in) in diameter; it was made entirely of silver. [citation needed] Charles Hunter, a London surgeon, is credited with the coining of the term "hypodermic" to describe subcutaneous injection in 1858.
The French scale measures and is proportional to the outer diameter of a catheter, with 1 French (Fr) defined as 1 ⁄ 3 millimeter, making the relationship: 1 mm = 3 Fr. Thus, the outer diameter of a catheter in millimeters can be calculated by dividing the French size by 3. [ 2 ]
Tygon Medical/Surgical Tubing S-50-HL — Characterized to the latest ISO 10993 standards and U.S. Food and Drug Administration (FDA) guidelines for biocompatibility.This material is non-toxic, non-hemolytic, and non-pyrogenic.
Portex Medical (England and France) produced the first cuff-less plastic 'Ivory' endotracheal tubes. [1] Ivan Magill later added a cuff (these were glued on by hand to make the famous Blue-line tube copied by many other manufacturers). Maeterlinck GmbH developed the disposable endotracheal tube and produced many design variations, adding the ...
A Jackson-Pratt drain (also called a JP drain) is a closed-suction medical device that is commonly used as a post-operative drain for collecting bodily fluids from surgical sites. The device consists of an internal drain connected to a grenade-shaped bulb or circular cylinder via plastic tubing. [1]
A Penrose drain is a soft, flexible rubber tube used as a surgical drain, to prevent the buildup of fluid in a surgical site. It belongs to the "passive" type of drain, the other broad type being "active". The Penrose drain is named after American gynecologist Charles Bingham Penrose (1862–1925). [1]