The present invention includes a barrel (10) having an inner surface defining a chamber for retaining fluid, a plunger (1) composed of a plurality of longitudinal elongated body having a fin (2), proximate to the needle the a single use syringe having any piston (3) and connected to an end of the plunger, the piston or the outer surface of the end portion of the plunger is prevented inner surface and leakage of the barrel when no piston in the connected state, it is a single-use syringe: barrel has a constant radius circular base and variable inner shape constitutes the wall of a barrel having a variable thickness, a plurality of fins inside the chamber (2) integrated plunger slides has a general outer shape of the rotating cylinder to generate a chamber each longitudinal direction of the plurality of fins of the plunger (2) along its entire length Has a constant height, unlike the height of at least one fin of the other fin, the fin height is rotated with respect to the plunger itself via the space which the plunger (1) is defined by the variable inner radius of the barrel as it is possible to insert in close contact with no ability to, the height of each fin is adapted plurality of at least one length of the fins of the fin, the end portion of the plunger close to the needle to have a weakened region in the form of a hole in, unlike the length of at least one fin of the other fin barrel further has at least two grooves in the inner surface of the barrel, at least one groove distal on the edge (8), at least one groove proximal located end (9) of the barrel relative to the needle about single use syringe.本発明は、流体を保持するチャンバを画定する内側表面を有するバレル(10)と、複数の長手方向のフィン(2)を有する細長い本体により構成されるプランジャ(1)と、針に近接する前記プランジャの端部に接続された任意のピストン(3)とを有する一回使用シリンジであって、ピストンの又はピストンを有しない場合の前記プランジャの端部の外側表面がバレルの内側表面と漏れ防止接続状態にある、一回使用シリンジであり:バレルは、一定半径円形ベース及び可変内側形状を有し、可変厚さを有するバレルの壁を構成し、チャンバの内側を複数のフィン(2)が組み込まれたプランジャが滑るチャンバを生成する回転円筒の一般外側形状を有し;プランジャの長手方向の複数のフィン(2)の各々は、その全体の長さに沿って一定の高さを有するが、他のフィンの少なくとも一のフィンの高さとは異なり
