Trocar and wound closure device

A kit comprising:

• a cannula for use in a laparoscopic procedure, said cannula comprising:
• an external cannula including a lumen sized and shaped for receiving a trocar;
• and at least one anchor deployable into tissue of said abdominal wall, said anchor removably coupled to an inner wall of said external cannula;
• wherein said at least one anchor is mechanically engagable from within said lumen;
• and
• a trocar shaped and sized for insertion through an abdominal wall, wherein said trocar comprises:
• an anchor advancing assembly, said anchor advancing assembly comprising at least one anchor thruster shaped and positioned to engage said at least one anchor of said external cannula to advance said at least one anchor into the tissue;
• wherein said trocar is adapted for insertion through a fascia layer of said abdominal wall, and structured to be stabilized in position in said abdominal wall by said fascia layer;
• and wherein a shaft of said trocar comprises a narrow portion proximal to a distal end of said trocar, said narrow portion defining a recess shaped and sized to receive said fascia tissue;
• said recess defining a proximally facing surface of said shaft configured directly below said narrow portion which abuts against said fascia layer.

A cannula for use in a laparoscopic procedure, comprising:

• an external cannula including a lumen sized and shaped for receiving a trocar;
• and
• at least one anchor deployable into tissue of said abdominal wall, said at least one anchor removably coupled to an inner wall of said external cannula;
• wherein said at least one anchor is mechanically engagable from within said lumen;
• wherein said inner wall comprises at least one elongate recess in which at least a portion of said at least one anchor is seated, said recess defining a path for advancement of said at least one anchor towards the tissue;
• said recess comprising a trapezoidal cross section profile and defining a dovetail coupling between said at least one anchor and said external cannula.

A kit comprising:

• a cannula for use in a laparoscopic procedure, said cannula comprising:
• an external cannula including a lumen sized and shaped for receiving a trocar;
• and at least one anchor deployable into tissue of said abdominal wall, said at least one anchor removably coupled to an inner wall of said external cannula;
• wherein said at least one anchor is mechanically engagable from within said lumen;
• and
• a trocar shaped and sized for insertion through an abdominal wall, wherein said trocar comprises:
• an anchor advancing assembly, said anchor advancing assembly comprising at least one anchor thruster shaped and positioned to engage said at least one anchor of said external cannula to advance said anchor into the tissue;
• wherein said anchor thruster is a rod, and wherein a distal surface of said rod engages a proximal surface of said at least one anchor.