• #1-1. Side Effects and Solution of Fillers

     

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    Cannula procedures, Are They Safe?

     

    The reason why the author chose this subject is because many injectors who perform a filler procedures think of the cannula as a safer tool than the needle on the premise that the cannula is difficult to penetrate the blood vessel. For this reason, they tend to inject the filler in a rougher manner when using the cannula, and the vascular events occurring as a result are highly likely to have a larger scar and leave it compared to the needle.

     

    The cannula is a safer tool than the needle, but it may also penetrate the blood vessel. Therefore, caution should be exercised even during a procedure with a cannula. Having a lot of experience in the field of filler procedures for 10 years, the author mainly used the needle for the first seven years and then combined the needle and the cannula for subsequent three years. These days, he is using the cannula as the primary procedure tool. In that sense, the author thinks that he is qualified to deal with the advantages and disadvantages of the needle and cannula procedures, respectively.

     

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    The probability of penetrating the blood vessel varies depending on how blunt the cannula tip shape is. If the tip is blunt, it is difficult to penetrate the blood vessel, and if it is sharp, it is easy to penetrate the blood vessel. It is important to identify the tip shape of the used cannula and know the pressure felt when the tip goes through the skin tissue, to ensure that the filler material is injected under the pressure by which the blood vessel cannot be penetrated. It becomes often problematic not to distinguish between when the skin is pierced and when the blood vessel is pierced.

     

    When the filler material is injected using the cannula into the area where the blood vessel is larger than usual, the blood vessel may be pierced. In addition, it is easy for the blood vessel to be pierced even when the cannula tip is located at a vascular branching point. Additionally, it is easy to pierce the blood vessel if the cannula is moved rapidly in a short time under an excessive pressure. A hurried filler injection is highly likely to penetrate the blood vessel, and such penetrated blood vessel is filled with a large quantity of filler material at one time, resulting in the increased risk of blindness.

     

    -To be continued

     

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