The present invention discloses a back pressure type pharmaceutical sea din bottle, a back pressure dispensing device and a back pressure injection device thereof, a medical sea din bottle including a general medical sea din bottle and a general injection device, and a dispensing device and an injection device thereof. . The reverse pressure type seadin bottle includes a bottle body whose inner wall is a right cylindrical shape. A first piston is installed near the mouth of the bottle body, and a blind hole is formed at the center of the bottom surface outside the first piston. Installed, the mouth is fixed to the outer edge and the outer edge and a cap is installed to prevent the first piston from falling off, to solve the secondary contamination problem in the dispensing and injection process according to the dispensing device and the injection device It can be widely applied not only to city hospitals, but also to areas with poor sanitation conditions such as mountainous areas and rural areas, and can also be applied to the outdoors, ships, battlefields and disaster areas. [Selection] Figure 9本発明は逆圧式医薬用シーディン瓶及びその逆圧式調剤装置と逆圧式注射装置、一般的な医薬用シーディン瓶及び一般的な注射装置を含む医薬用シーディン瓶及びその調剤装置と注射装置を公開する。逆圧式シーディン瓶は、内壁が直円筒状である瓶本体を含み、瓶本体内の口部に近づくところには第１ピストンが設置され、第１ピストンの外側の底面の中央には止まり穴が設置され、口部には外縁と外縁に固定され第１ピストンの脱落を防止するためのキャップが設置され、その調剤装置及び注射装置に合わせ、調剤と注射過程における二次汚染問題を解決することができ、都市病院だけでなく、山岳地域、農村などの衛生条件が悪い地域にも幅広く適用することができ、さらに屋外、船舶、戦場及び被災地域にも適用することができる。【選択図】 図９
