Patent ID: 7798991

Claim:
A variable opening flexible sealing gland for a cap assembly of a cannula comprising: a plurality of valve body sections, each having a first valve section including an annular shaped valve ring, said first valve section being discontinuous, having at least one complete separation defined in said annular shaped valve ring, a second valve section extending from the first valve section and including a valve extension having a proximal end portion, a distal end portion, and a substantially conically shaped medial portion connected to and extending therebetween, said second valve section being discontinuous, having at least one complete separation defined in said valve extension, a valve opening positioned in the distal end portion of the valve extension and adapted to receive therethrough an elongate tool, and a slit extending between the valve opening and the valve ring, said slit formed by a combination of said at least one complete separation of said first valve section and said at least one complete separation of said second valve section, and said slit extending through said valve ring, each one of the valve rings of each of the plurality of valve body sections abuttingly contacting at least one other of the valve rings of the plurality of valve body sections to form a layered cap assembly valve ring, the medial portion of the valve extension of each one of the plurality of valve body sections slidably contacting the medial portion of the valve extension of at least one other of the plurality of valve body sections, and the combination of the plurality of valve body sections forming a substantially conically shaped iris diaphragm portion of the sealing gland.