We provide an injection needle instrument that can be easily and reliably injected into the heart of an experimental animal. The injection needle support fixture 800 for supporting and fixing the injection needle when the medicine is injected into the tissue. It has an injection needle support portion for exposing a needle tip of an injection needle to support the injection needle, and an injection needle fixing part for fixing an injection needle punched into the tissue by being attached to the tissue.The injection needle support portion has a first plate portion 220 and a second plate portion 230, and the needle tip of the injection needle is exposed between the first plate portion 220 and the second plate portion 230 to support the injection needle while holding the injection needle.実験用動物の心臓に灌流液を簡易且つ確実に注入できる注射針器具を提供する。薬剤を組織へ注入する際に注射針を支持固定する注射針支持固定具800である。注射針の針先を露出させて該注射針を支持する注射針支持部と、組織に取り付けられることにより組織に穿刺された注射針を固定する注射針固定部と、を有する。注射針支持部は、第1板部220と第2板部230とを備え、第1板部220と第2板部230との間で注射針の針先を露出させて注射針を挟持しながら注射針を粘着支持する。
