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The AdvantaJet® vs. Needle and Syringe In the past, jet injection was most often considered for children or individuals with needle phobias. However, AdvantaJet® Systems have proven to be reliable, accurate, and beneficial tools for any patient treated with insulin. While beneficial for all, the AdvantaJet® systems have proven to be particularly useful in the following circumstances:    Problem/Issue Solution Lack of confidence in accuracy of dosage Clinically proven to be more accurate More than one caregiver preparing insulin dosage Accurate repeatability; individual technique won't vary the dosage Erratic insulin absorption Improved absorption with mist-like dispersal pattern Injection site Lipoatrophy, Bruising, Bleeding, Scarring Eliminated or reduced skin trauma Hesitancy to move into intensive therapy Improved compliance due to elimination of needles Erratic glucose levels Consistent absorption leads to consistent control Mixed dose therapy Simplified procedure to use two or more types; no need to introduce air into vial  Hazards of accidental needle sticks No needles Inability to access injection sites One-handed injection technique enables access to more sites Vision impaired Tactile and audible cues for dosage accuracy     Dispersal Patterns Injection dispersal patterns are much more effective in delivering insulin when using an AdvantaJet® than when using a needle and syringe.    Using Needle and Syringe Injection The injected medication is deposited in a "bolus" or pool of fluid which displaces the surrounding  tissue.  It is then absorbed from the periphery to the centre of the "bolus" by the surrounding absorbent tissue.  Due to limited tissue contact, absorption is generally slower than with jet injection.   Using Jet Injection The injected medication disperses in a mist or spray effect as it enters the subcutaneous tissue.  The minute fluid particles of medication are than in close contact with the absorption tissue.  The rate of absorption increases as the surface area to which the medication is exposed increases.  The small penetration point results in reduced trauma to the site.