Hemostasis valve using counter-rotating flexible members

A hemostasis valve, comprising:

• a main housing having a proximal end and a distal end;
• a rolling housing rotatable relative to the main housing between a first position and a second position;
• a gasket disposed in the rolling housing, the gasket comprising a proximal end secured to the proximal end of the main housing, a distal end secured to the distal end of the main housing, and a tubular body defining a lumen between the proximal end and the distal of the gasket, the tubular body being collapsible and elastic allowing the lumen to be closed and open;
• and
• a plurality of flexible members, each of the plurality of the flexible members comprising a first end coupled to the main housing, a second end coupled to the rolling housing, and extending between the rolling housing and the tubular body of the gasket, the plurality of the flexible members being arranged to constrict the tubular body of the gasket when the rolling housing is in the first position thereby collapsing the tubular body of the gasket to close or narrow the lumen, and unconstrict the tubular body of the gasket when the rolling housing is in the second position thereby allowing the lumen of the tubular body to open.