Abstract: A surgical instrument has an hourglass instrument seal operably coupled to the interior of the valve seal assembly. The hourglass instrument seal includes a top flange, a free floating lower flange and a rippled junction adjoining a top conical portion and bottom conical portion. An anti-inversion assembly biases the top flange apart from the lower flange. A tilt subassembly enables pivotal movement of the seal assembly using a ball and socket. Additionally, the cap housing may include a ball socket for slidably engaging the lower spherical section of the tilt assembly. A duckbill valve includes a pair of flaps, each having a plurality of reinforcing ribs. A fluid port is disposed at an acute upward angle relative to the channel. A cannula tube includes a plurality (e.g., three) independent parallel sets of evenly spaced threads.

Abstract: A surgical instrument has an hourglass instrument seal operably coupled to the interior of the valve seal assembly. The hourglass instrument seal includes a top flange, a free floating lower flange and a rippled junction adjoining a top conical portion and bottom conical portion. An anti-inversion assembly biases the top flange apart from the lower flange. A tilt subassembly enables pivotal movement of the seal assembly using a ball and socket. Additionally, the cap housing may include a ball socket for slidably engaging the lower spherical section of the tilt assembly. A duckbill valve includes a pair of flaps, each having a plurality of reinforcing ribs. A fluid port is disposed at an acute upward angle relative to the channel. A cannula tube includes a plurality (e.g., three) independent parallel sets of evenly spaced threads.

Abstract: A trocar includes an incision blade/safety shield cartridge assembly, a sleeve body having a distal end and an opposite proximal end, and a handle. The incision blade/safety shield cartridge assembly includes a nose cone; a stationary incision blade adapted to produce a clean incision with a flap, such as a v-shaped incision; and a retractable safety shield that conforms to the shape of the incision blade, a spring, and a safety shield spring retainer housing. The safety shield retracts to a retracted position exposing the incision blade during piercing of a body cavity and rapidly extends to an extended position beyond the tip of the incision blade upon penetration of a body cavity, thereby guarding against unintended incision and/or puncture wounds.