Device for safe storing and expelling of a liquid solution

A device for safe storing and expelling of a liquid solution, the device comprising:

• an annular body having a proximal end, a proximal portion, a distal end and a distal portion and comprising a transverse member, the transverse member is connected along a circumference of the transverse member to an inner lateral surface of the annular body between the proximal portion and the distal portion of the annular body;
• a liquid-tight piston fitting tightly and movable within the proximal portion of the annular body,
• wherein the piston comprises one or more longitudinal members longitudinally protruding from the piston into an interior of the proximal portion of the annular body, wherein each of the one or more longitudinal members comprises a sharp end configured to cut the transverse member of the annular body when the one or more longitudinal members is pushed against the transverse member of the annular body, and
• wherein the piston further comprises:
• a first liquid-tight annular piston body fitting tightly and movable within the proximal portion of the annular body,
• a transverse piston portion projecting outwardly from a proximal end of the first annular piston body, and
• a second annular piston body connected to the transverse piston portion and surrounding the first annular piston body such that a gap is formed between the first annular piston body and the second annular piston body, wherein the gap is configured to receive at least a part of the proximal portion of the annular body;
• and
• a piston locking annular body connected to the second annular piston body and connectable to the annular body,
• wherein the annular body comprises lateral protrusions projecting outwardly from an external lateral surface of the annular body,
• wherein the piston locking annular body comprises mating cuts on a lateral surface of the piston locking annular body, and
• wherein the cuts and the lateral protrusions are shaped and sized to cause each of the cuts to receive and lock one of the lateral protrusions when the piston locking annular body is longitudinally pressed with respect to the annular body.