Pinch to release cannula depth limiter

A surgical access device assembly comprising:

• (a) a cannula, wherein the cannula includes a proximal hub and a cannula tube extending distally from the proximal hub, wherein the cannula defines a working channel configured to guide a surgical instrument along a central axis of the cannula;
• and
• (b) a depth limiter comprising:
• (i) first and second user contact portions configured to be actuated by a user;
• (ii) a first biasing feature comprising:
• (A) a first resilient portion, and
• (B) a first gripping surface, wherein the first gripping surface is movably coupled with the first resilient portion, wherein the first gripping surface is radially offset from the first user contact portion by approximately 180 degrees, wherein the first resilient portion is configured to move the first gripping surface from a fixed configuration to a movable configuration when the first user contact portion is actuated by the user;
• and
• (iii) a second biasing feature comprising:
• (A) a second resilient portion, and
• (B) a second gripping surface, wherein the second gripping surface is movably coupled with the second resilient portion, wherein the second resilient portion is configured to move the second gripping surface from the fixed configuration to the movable configuration when the second user contact portion is actuated by the user,
• wherein in the fixed configuration, the first and second gripping surfaces collectively form a first effective diameter that is configured to restrict axial movement of the depth limiter relative to the cannula tube by directly contacting the cannula tube, and
• wherein in the movable configuration, the first and second gripping surfaces extend parallel to the central axis defined by the cannula and collectively form a second effective diameter that is configured to allow for axial movement of the depth limiter relative to the cannula.

A depth limiter configured to couple with a cannula of a surgical access device, the depth limiter comprising:

• (a) a first biasing feature configured to completely circumferentially surround a diameter of the cannula, the second biasing feature comprising:
• (i) a first user contact portion configured to be actuated by a user,
• (ii) a first resilient portion, and
• (iii) a first gripping surface, wherein the first gripping surface is movably coupled with the first resilient portion, wherein the first resilient portion is configured to move the first gripping surface from a fixed configuration to a movable configuration when the first user contact portion is actuated by the user;
• and
• (b) a second biasing feature configured to completely circumferentially surround the diameter of the cannula, the second biasing feature comprising:
• (i) a second user contact portion configured to be actuated by a user,
• (ii) a second resilient portion, and
• (iii) a second gripping surface, wherein the second gripping surface is movably coupled with the second resilient portion, wherein the second resilient portion is configured to move the second gripping surface from the fixed configuration to the movable configuration when the second user contact portion is actuated by the user,
• wherein in the fixed configuration, the first and second gripping surfaces collectively form a first effective diameter that is configured to restrict axial movement of the depth limiter relative to the cannula by directly contacting the cannula, and
• wherein in the movable configuration, the first and second gripping surfaces extend parallel to a longitudinal axis defined by the cannula and collectively form a second effective diameter that is configured to allow for axial movement of the depth limiter relative to the cannula.