Fluid collector

A fluid collector configured to releasably engage with an injector, the fluid collector comprising:

• a fluid container configured to have a centrally extended conical projection containing a detachable needle holder at a proximal end of said conical projection to hold a detachable hypodermic needle;
• a piston assembly having a piston flange provided with a conical cavity at center of said piston assembly at a distal end of said piston assembly to couple a plunger shaft of said injector;
• a container cover being internally provided with a concave diaphragm having a central hole to allow entry of said detachable hypodermic needle along with a detachable needle hub;
• wherein said container cover is removably attached with said fluid container;
• wherein said fluid container is provided with engagement means at a distal end to engage with said injector;
• wherein a united plunger barrel of said injector retaining a vacuum is pushed completely in forward direction to attach said plunger shaft with said conical cavity of said piston assembly;
• and
• wherein release of said vacuum results in backward movement of an inner plunger barrel of said united plunger barrel along with said piston assembly and in suction of a fluid from a target in said fluid container.