Patent ID: 8092431

Claim:
A seal assembly for a cannula, the cannula comprising a single component housing having a proximal portion and a distal portion, the seal assembly comprising: a first seal including a first tri-slit, the first seal including rounded and flat sides located around a perimeter of the first seal, each side including at least one interlocking member directly attached to the first seal; a second seal disposed co-axially and proximal to the first seal, the second seal consisting of a second tri-slit, the second seal including rounded and flat sides located around a perimeter of the second seal, each side including at least one interlocking member directly attached to the second seal; and a third seal disposed co-axially and proximal to the first seal and the second seal, the third seal including a central opening, wherein the seal assembly is located in the proximal portion of the housing, wherein a space is located between the second and third seal, the space created by the second and third seal, wherein the interlocking members of the first seal and the interlocking members of the second seal interlock with each other such that the rounded sides of the first seal are located adjacent to the flat sides of the second seal.