Syringe rolling apparatus and method

A method for rolling of a rolling diaphragm syringe from an empty, unrolled state to a rolled state, the method comprising:

• advancing a piston of a rolling apparatus to engage an end wall of the rolling diaphragm syringe in the empty, unrolled state, wherein the rolling diaphragm syringe comprises a proximal end comprising the end wall configured to engage the piston of the rolling apparatus, an open distal end comprising a discharge neck, and a flexible sidewall extending between the proximal end and the open distal end along a longitudinal axis;
• pressurizing an interior of the rolling diaphragm syringe in the empty, unrolled state to a first pressure by applying a pressurized gas through the open distal end of the rolling diaphragm syringe into the interior thereof;
• after the rolling diaphragm syringe is pressurized, further advancing the piston, thereby causing at least a portion of the flexible sidewall of the rolling diaphragm syringe to roll upon itself in a radially inward direction, thereby forming the rolling diaphragm syringe in the rolled state;
• and
• releasing an amount of the pressurized gas from the interior of the rolling diaphragm syringe during the further advancing of the piston of the rolling apparatus to maintain the first pressure in the interior of the rolling diaphragm syringe.