Connectors with cutting element

A connector comprising:

• an annular body having a first end opposite a second end, and an annular inner surface extending along a circumference and axially between the first end and the second end;
• a first flange defined at the first end of the annular body for coupling with a reservoir;
• and
• a cutting element within the annular body, said cutting element having a cutting edge configured for cutting into the reservoir, said cutting edge extending adjacent said circumference along a circumferential path and allowing for flow of any content within the reservoir within said circumferential path, wherein said cutting element slides along an axis of the annular body relative to the annular body between a first location and a second location, wherein when at the first location, the cutting edge is at a first position, and when at the second location, the cutting edge is at a second position external of the annular body and beyond the first flange for cutting along said circumferential path into the reservoir, and wherein the first position is axially spaced from the second position.