Endoscopic suturing device with circular needle

An endoscopic suturing system comprising:

• (a) a distal assembly comprising:
• (i) a first housing comprising an arcuate needle guide and an endoscope fastener, wherein the endoscope fastener attaches the first housing to an endoscope;
• (ii) an arcuate needle comprising a notch and a suture attachment, wherein the arcuate needle has a center axis, and wherein the arcuate needle is disposed within the arcuate needle guide;
• and
• (b) a proximal assembly comprising:
• (i) a second housing;
• (ii) an actuator connected to the second housing;
• and
• (c) a cable having a pawl, wherein the pawl extends from a cable surface and is biased away from the cable surface;
• wherein the notch and the pawl engage when the cable translates in a first rotational direction about the center axis, and wherein the notch and the pawl disengage when the cable translates opposite the first rotational direction.