Abstract: A hybrid cannula may comprise a first portion formed from a first material, a second portion formed from a second material overmolded to the first portion, a third portion formed from a third material and a fourth portion formed from a fourth material overmolded to the third material. The third portion is coupled to the first portion. The first portion may prevent the proximal end of the hybrid cannula from being pushed through a portal. The second portion may include a membrane and the fourth portion may include a dam, the dam defining interior spaces thereof between the proximal and distal ends of the hybrid cannula. The membrane and/or dam may prevent liquid from projecting during insertion or removal of instruments. The distal end of the hybrid cannula may comprise a variety of features.

Abstract: A hybrid cannula may comprise a rigid portion overmolded with a flexible portion. The rigid portion at its proximal end may comprise a rigid flange for preventing the proximal end of the hybrid cannula from being pushed through the portal. The flexible portion may comprise a dam within the passage of the hybrid cannula, the dam defining interior spaces thereof between the proximal and distal ends of the hybrid cannula. The flexible portion's distal end may comprise a variety of features extending therefrom, including a flange and/or a cannulated tip. The flexible portion's proximal end may further comprise a membrane to prevent liquid from projecting during insertion of a tool into the dam and/or removal of the tool from the dam. The hybrid cannula can be useful in minimally invasive surgical procedures, including arthroscopic and endoscopic surgeries.