Needles developed in the late 16th century. Hypodermic needles are used primarily in the intravaneous administration of medication as well as drawing of samples in veins. Benefits include rapid delivery of medication which would otherwise harm the liver or cannot be absorbed orally as in the case of insulin.

Needles also create an extremely sterile environment limiting infections and contamination. Needles come in various sizes or thickness also known as gauge. They range from 7 gauge which is the largest to 33 gauge which is the smallest,21 gauge is the most common size for drawing blood for testing. Needles are made up of a bevelled edge with a cannula alowing the tip to make an easy incision with minimal pain as possible.


1What type of needles are there?
There are 2 types and they are sterile and made of stainless steel - they come in a leur lok format as well as a leur slip format .The leur lock allows for secure locking especially when injecting heavier medication or additional care is needed to prevent contamination in order for needle not to slip off .
2What are the different colour indicators on needles?
26g - Brown 25g - Orange 22g- Black 21g Green 20g- yellow 19g - cream
3How should we dispose needles?
Hypodermic needles are one time use and should be diposed according to Medical council guidelines. Needles should not be disposed in drains or normal waste bins.Place in secure dedicated container and contact your local medical waste disposal company.


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