CONE-SHAPED UNIVERSAL SEAL HAVING NONUNIFORM SURFACE AND SEAL ASSEMBLY INCLUDING SAME

摘要

This invention is a universal seal assembly including a universal seal molding (21), including a generally conical instrument guide (25) defining an instrument port (27), having a nonuniform surface for reducing instrument drag, and a mounting portion configured to mount the universal seal assembly to a valve door assembly (202) configured to be removably mounted to a cannula. Preferably the instrument guide (25) has radially oriented ribs (26) configured to reduce contact area between the universal seal molding (21), and an instrument being guided thereby toward the port (27). There is a bumper (25) around the periphery of the instrument guide (25). In embodiments for use with a valve door assembly (202), the mounting portion of the universal seal assembly is a flange (217) shaped for hooking into the elastomeric body of the valve door assembly (202). Another aspect of the invention is a reusable cannula, a valve door assembly (202) removably attached to the cannula, and a universal seal assembly mounted to the valve door assembly (202).