Surgical retractor

A retractor assembly for tissue retraction at the site of an incision that can be used in an open or closed configuration, the retractor assembly comprising:

• an arcuate frame member that extends around an arc and having a first arc terminal end, a second arc terminal end, a first connector engagement feature at the first arc terminal end, and a second connector engagement feature at the second arc terminal end;
• an arcuate connector having a third arc terminal end, a fourth arc terminal end, a first frame engagement feature at the third arc terminal end configured to reversibly engage with the first connector engagement feature, and a second frame engagement feature at the fourth arc terminal end configured to reversibly engage with the second connector engagement feature;
• a groove running along a proximal surface of the frame member;
• a mobile carriage engaged to the groove to allow the carriage to translate along the groove;
• a retractor blade assembly comprising a retractor blade and a blade post engaged to the mobile carriage;
• and
• a carriage locking mechanism configured to prohibit movement of the blade post relative to the frame member when in a locked position.

A retractor assembly for tissue retraction at the site of an incision, the retractor assembly comprising:

• an arcuate frame member that extends around an arc and having a first arc terminal end and a second arc terminal end;
• a groove running along a proximal surface of the frame member;
• a mobile carriage configured to initially engage with the groove, the mobile carriage including:
• a blade post holder attached to a blade post;
• and
• a carriage locking mechanism configure to allow the blade post six degrees of freedom of movement relative to the frame member when in an unlocked position, and to prohibit movement relative to the frame member when in a locked position except translation along the groove.