Patent ID: 8801695

Claim:
A cannula assembly kit, comprising: a first inner cannula; and a first inner cannula connector associated with the first inner cannula comprising a first keying feature and a second keying feature radially distributed about the first inner cannula connector with a first clocking pattern an outer cannula coupled to an outer cannula connector comprising a locking flange forming a complete annulus and comprising complementary features configured to engage the first keying feature and the second keying feature, wherein a clocking pattern of the complementary features allows mating of the first inner cannula connector and the outer cannula connector; and a second inner cannula connector associated with a second inner cannula comprising a plurality of keying features radially distributed about the second inner cannula connector with a second clocking pattern configured to prevent mating of the second inner cannula connector with the outer cannula connector such that the plurality of keying features is not compatible with the complementary features of the outer cannula connector.