Syringe and Needle serve in four essential roles–as injection devices, fluid or biopsy collection, irrigation or suction. In the first role of injection devices, they administer medications into the body. Common injections include insulin, vaccines, anxiolytics, analgesics, anesthetics, antibiotics, muscle relaxants, hormones, vitamins, anticholinergics, antimuscarinics, & others.
For fluid or biopsy collection, they extract blood, cerebrospinal, amniotic, synovial, peritoneal, pericardial, and pleural fluids as well as tissue samples.
For irrigations, aminoglycosides, antibiotics, corticosteroids, saline, & vasoconstrictor epinephrine solutions are common.
Lastly for suctioning, these devices aspirate airway passages to remove mucus and vomit. Some designs target other obstructions like ear wax or venom.
Syringe and Needle
A needle provides the primary function of administering injectable medications. Injectables are a growing medical application. US hospital drug spending for injectables reached $25.8 billion in 2016. “In acute-patient-care settings, injectable drugs are used ubiquitously. Injectables offer several advantages over other administration routes, including precise and adjustable dosing, predictable bioavailability, and fast onset of action.”5 To select the best needle for your needs first starts with the type of injection. There are three types of injections, along with sites on the body, to perform those injections. After determining the type of injection, next is determining the needle gauge and then the needle length.
Needle Injection Types & Size
There are three typical injection sites–intradermal, subcutaneous, and intramuscular. The deeper the injection site, the longer the length of the needle and the more direct or perpendicular the needle route to the delivery tissue. However, the shorter the needle length, the less pain or bruising experienced by patients receiving injections. “Procedural pain in general, and intramuscular (IM) injection pain in particular, is one of the most distressing and painful health care experiences for children