Split hoop wound retractor with gel pad

A surgical access device, comprising:

• a wound retractor for retracting an opening in a biological body wall, the wound retractor having
• an outer ring having an annular axis and adapted to be positioned near a proximal surface of the biological body wall,
• an inner ring adapted to be positioned near a distal surface of the biological body wall, and
• a sleeve coupling the outer ring to the inner ring,
• wherein the outer ring has a neutral state, in which the outer ring is substantially noncompliant, and a transitional state, in which the outer ring is rolling over itself around the annular axis, thereby rolling the sleeve around the outer ring to retract and seal the opening in the body wall;
• and
• a gel cap adapted for being attached to the outer ring of the wound retractor in the neutral state, the gel cap having
• a cap ring adapted to be coupled to the outer ring of the wound retractor,
• a lever pivotably coupled to the cap ring, and
• a gel pad coupled to the cap ring and including an access portion for providing a passage from external the body to a body cavity, the passage forming an instrument seal in the presence of an instrument inserted therethrough and a zero seal in the absence of an instrument inserted therethrough,
• wherein the outer ring of the wound retractor is configured to be positioned within the cap ring such that pivoting the lever relative to the cap ring secures the gel cap to the wound retractor.

A surgical access device, comprising:

• a wound retractor for retracting an opening in a biological body wall, the wound retractor comprising:
• an outer ring having an annular axis and adapted to be positioned proximally of a proximal surface of the biological body wall,
• an inner ring adapted to be positioned distally of a distal surface of the biological body wall, and
• a sleeve coupling the outer ring to the inner ring,
• wherein the outer ring has a neutral state, in which the outer ring is substantially noncompliant, and a transitional state, in which the outer ring is rolling over itself around the annular axis, thereby rolling the sleeve around the outer ring to retract and seal the opening in the body wall;
• and
• a sealing cap adapted for being coupled to the outer ring of the wound retractor in the neutral state.

A surgical access device, comprising:

• a wound retractor for retracting an opening in a biological body wall, the wound retractor comprising:
• an outer ring having an annular axis and adapted to be positioned proximally of a proximal surface of the biological body wall,
• an inner ring adapted to be positioned distally of a distal surface of the biological body wall, and
• a sleeve coupling the outer ring to the inner ring,
• wherein the outer ring has a neutral state, in which the outer ring is substantially noncompliant, and a transitional state, in which the outer ring is rolling over itself around the annular axis, thereby rolling the sleeve around the outer ring to retract and seal the opening in the body wall.

A surgical access device, comprising:

• a gel cap adapted for being attached to an outer ring of a wound retractor having a neutral state in which the outer ring is substantially noncompliant and a transitional state in which the outer ring is rolling over itself around an annular axis thereby rolling a sleeve around the outer ring to retract and seal an opening in a body wall, the gel cap comprising
• a cap ring adapted to be coupled to the outer ring of the wound retractor, and
• a gel pad coupled to the cap ring and including an access portion for providing a passage from external the body to a body cavity, the passage forming an instrument seal in the presence of an instrument inserted therethrough and a zero seal in the absence of an instrument inserted therethrough,
• wherein the gel cap further comprises a lever pivotably coupled to the cap ring, and wherein the cap ring is configured to be positioned around the outer ring of the wound retractor such that pivoting the lever relative to the cap ring secures the gel cap to the wound retractor.