Surgical sleeve or cannula with rotating reducer

A surgical sleeve for the introduction of surgical instruments into a body cavity, the surgical sleeve comprising:

• a housing having an opening enabling surgical instruments to be introduced into the sleeve;
• a sleeve portion extending from the housing coaxially with the opening in the housing;
• and
• a reducer assembly secured to the housing, including:
• a rigid seal disc mounted for rotation in a plane transverse to the sleeve portion;
• a resilient, laminar seal layer generally coextensive with the seal disc and disposed between the seal disc and the housing and sealingly engaging in a portion of the housing;
• and
• a plurality of apertures formed in the seal disc and seal layer, the apertures having varying diameters to define seals that are selectively movable, by rotation of the seal disc, over the opening in the housing to seal against exteriors of instruments disposed in the sleeve.

A surgical sleeve for the introduction of surgical instruments into a body cavity, the surgical sleeve comprising:

• an elongate sleeve portion having an inner diameter for the passage of surgical instruments through the surgical sleeve;
• a housing secured to one end of the sleeve portion, the housing having an opening aligned with the inner diameter, the opening including a protrusion above the housing;
• and
• a reducer assembly secured to the housing opposite the sleeve portion, including:
• a rigid seal disc;
• a resilient, laminar seal layer generally coextensive with the seal disc and disposed, between the seal disc and the housing and sealingly engaging the protrusion on the housing;
• and
• a plurality of apertures formed in the seal disc and seal layer, the apertures having varying diameters and defining seals that are selectively movable, by rotation of the seal disc, over the opening in the housing to seal against exteriors of instruments disposed in the sleeve;
• and
• a seal disc cap securing the seal disc to the housing, the seal disc cap including a pivot point to enable the seal disc rotation in a plane generally transverse to the sleeve portion.

A surgical sleeve for the introduction of surgical instruments into a body cavity, the surgical sleeve comprising:

• an elongate sleeve portion having an inner diameter for the passage of surgical instruments through the surgical sleeve;
• a housing secured to one end of the sleeve portion, the housing having an opening aligned with the inner diameter of the sleeve portion;
• an expandable member formed on the sleeve portion generally opposite the housing and selectively radially expandable within the body cavity to resist withdrawal of the surgical sleeve from the body cavity;
• and
• a reducer assembly mounted to the housing and including:
• a rigid seal disc mounted for rotation on the housing transverse to the sleeve portion;
• a resilient, laminar seal layer generally coextensive with the seal disc and disposed between the seal disc and the housing and sealingly engaging a portion of the housing;
• a plurality of seal apertures formed in the seal disc and seal layer, the seal apertures having varying diameters and defining seals that are selectively movable, by rotation of the seal disc, over the opening in the housing to seal against exteriors of instruments disposed in the sleeve.