Patent ID: 6258065
Filing Date: 2001-07-10
Classification: A61B

Abstract:
A surgical instrument seal assembly for mounting to a cannula for the insertion of a surgical instrument, the seal assembly comprising:an upper body portion having an upper surface that defines a throughbore extending completely through the seal assembly;a lower body portion projecting below the upper body portion wherein the lower body portion defines a cannula receiving opening adapted to mount the seal assembly on the cannula; anda unitary valve seal comprising:an upper seal portion having a mounting portion and a generally frustoconical upper sealing member having a first taper extending from the mounting portion, wherein the mounting portion is rigidly mounted in the upper body portion adjacent an interior portion of the upper body portion, said interior portion opposing the upper surface, the upper seal portion being mounted about the throughbore; anda lower seal portion extending from the upper seal portion, the lower seal portion being adapted to seal around the surgical instrument and having a generally frusto-conical lower sealing member having a second taper that is different from the first taper, the lower sealing member including a lower seal wall having an inner wall portion and an outer wall portion, a reinforcing layer being disposed intermediate the inner wall portion and the outer wall portion.