Devices, systems, and methods for wound closure

A wound closure system, comprising:

• a suture member including a suture and a retention member engaged to an end of the suture, the retention member being at least partially flexible and defining a central opening;
• a suture grasper including a needle defining a distal portion configured for insertion through the central opening of the retention member to retrieve the retention member from an internal surgical site, the distal portion of the needle defining at least one retention feature including a distally-facing feature configured to at least partially flex the retention member upon insertion of the distal portion into the central opening to permit passage of the distal portion therethrough, and a proximally-facing feature configured to inhibit proximal withdrawal of the distal portion through the central opening of the retention member;
• a wound closure device configured for insertion into an internal surgical site, the wound closure device including a shaft defining an angled lumen extending through the shaft, at least one ratchet component disposed on an outer surface of the shaft, and at least one arm coupled to the shaft, the at least one arm defining a suture-retaining portion and being movable relative to the shaft between a retracted position and a deployed position, wherein the at least one arm extends outwardly from the shaft such that the suture-retaining portion is aligned with the angled lumen, the retention member configured for releasably engagement with the suture-retaining portion of the at least one arm;
• and
• a collar positioned about the shaft, the collar including at least one ratchet tab, the collar slidable about the shaft to retain tissue between the collar and the at least one arm when the at least one arm is in the deployed position, wherein the at least one ratchet component of the shaft is engagable with the at least one ratchet tab to retain the collar in position relative to the shaft.

A wound closure system, comprising:

• a suture member including a suture and a retention member engaged to an end of the suture, the retention member being at least partially flexible and defining a central opening;
• and
• a suture grasper including a needle defining a distal portion configured for insertion through the central opening of the retention member to retrieve the retention member from an internal surgical site, the distal portion of the needle defining at least one retention feature including a distally-facing feature configured to at least partially flex the retention member upon insertion of the distal portion into the central opening to permit passage of the distal portion therethrough, and a proximally-facing feature configured to inhibit proximal withdrawal of the distal portion through the central opening of the retention member;
• a wound closure device configured for insertion into an internal surgical site, the wound closure device including a shaft defining an angled lumen extending through the shaft and at least one arm coupled to the shaft, the at least one arm defining a suture-retaining portion and being movable relative to the shaft between a retracted position and a deployed position, wherein the at least one arm extends outwardly from the shaft such that the suture-retaining portion is aligned with the angled lumen, the retention member configured for releasably engagement with the suture-retaining portion of the at least one arm;
• and
• a collar positioned about the shaft, the collar slidable about the shaft to retain tissue between the collar and the at least one arm when the at least one arm is in the deployed position, wherein the collar includes a rotatable lock member, the rotatable lock member including a protrusion extending therefrom and being rotatable between an unlocked position, wherein the protrusion is spaced from the shaft, and a locked position, wherein the protrusion frictionally engages the shaft to retain the collar in position relative to the shaft.