Catheters – The Student Physiologist | 合法醫療器材資訊網

Standardcatheters(JL,JR)arenamedafterDrMelvinJudkins,theirinventor....ThisiswherethenamesJL3.5andJR4comefrom....passPCIequipmentthroughthevessel,andassuchareusuallylargerandstifferthandiagnosticcatheters.

The different forms of catheter are designed to accommodate viewing different areas of anatomy, and the manoeuvring of interventional devices through the vascular system. Standard catheters (JL, JR) are named after Dr Melvin Judkins, their inventor. These pre-shaped catheters remain almost unchanged since first production in 1968.

French sizing is used to indicate the outer diameter of the device. 1 French unit is equivalent to 0.33mm, and different sizings have different pros and cons attributed to them. Historically, 6F catheters didn’t possess internal dimensions a large as those found in an 8F device, but in many modern 6F catheters this difference is now negligible.

Given the potentially long nature of any given procedure, catheters may be required to be held in place, so devices offer Back-Up Support, of which there are two types; active and passive.

Active Support us...