Cannula cap including yeildable outer seal and flapper valve

Details Cannula cap including yeildable outer seal and flapper valve Cannula cap including yeildable outer seal and flapper valve

1996-06-11

1998-10-13

McDermott, Corrine M.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604167, 604264, 604249, 604246, 604169, 137847, 137849, 2511492, 215DIG3, 215296, 215316, 215320, A61M 2500

Patent

active

058206043

ABSTRACT:
A cannula cap embodiment includes a monolithic elastomeric cap body having a sidewall portion for engaging a proximal end of a cannula, and an end portion connected to the cylindrical sidewall portion. The cannula cap also includes a monolithic flapper valve positioned within an interior of the cap body. The monolithic flapper valve includes a flapper portion, a ringed-shaped flapper mounting portion connected to adjacent interior portions of the cap body, and an integrally formed hinge portion connecting the flapper mounting portion to the flapper portion for permitting the flapper portion to move to an open position when an instrument is positioned within the instrument receiving passageway, and for biasing the flapper portion toward a closed position when an instrument is removed from the instrument receiving passageway. An instrument seal portion of the end portion of the cap body includes a reduced thickness wall portion adjacent an outer opening and extending in a plane transverse to the instrument receiving passageway, and an outwardly extending pleat surrounding the reduced thickness wall portion. The end portion of the cap body also includes a generally planar outer annular portion surrounding the pleat generally aligned with an imaginary plane defined by the reduced thickness wall portion.

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