OMFS 8115 Lecture Notes - Lecture 7: Stainless Steel, Sharps Waste, Antihypotensive Agent
12 Apr 2020
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Greater the angle of bevel, greater degree of deflection. Shank - shaft of needle which is long piece of tubular metal with diameter of needle lumen length from point to hub. Hub - plastic/metal piece through which the needle attaches to the syringe. Syringe penetrating end - placed into needle adaptor, perforates rubber diaphragm, rests with anesthetic cartridge. 25 - red, largest more reliable aspiration. Large gauge advantages = less deflection, greater accuracy, less chance of breakage, Short = 20 mm, long = 32 mm. Long are preferred for injections requiring penetration of significant thickness. Never use for more than one patient. Always be aware of position of uncovered needle tip. Dispose of needle after use into contaminated sharps container. Pain on insertion due to dull needle or poor technique. Pain on withdrawal due to fish hooked barbs if contact bone. Never use on more than one patient. Glass cylinder with la, usually 1. 7 ml.
