Endoscopic surgical blade and method of use thereof

A method for treating trigger finger, comprising:

• establishing an entry portal at a location proximal to A1 pulley;
• inserting a cannula having open proximal and distal ends and an open slot extending along the length of the cannula;
• inserting an endoscope with an endoscopic knife assembly into the cannula, said endoscopic knife assembly comprises:
• a low-profile blade having a blade body with a cutting surface;
• and
• a tube through which the endoscope is insertable;
• wherein the blade body having a proximate end, a distal end, an upper edge, and a lower edge, wherein the cutting surface is located at the distal end of the blade body, wherein the cutting surface comprises a top end and a bottom end, and is angled downward so that the top end of the cutting surface is forward of the bottom of the cutting surface,
• wherein the lower edge extends from the proximate end of the blade body and terminates at the bottom end of the cutting surface;
• wherein the blade body has non-cutting radiused surfaces at the top end of the cutting surface and a trailing edge on the upper edge of the blade body, and
• wherein the blade body is sized to fit at a tip of the endoscope and is affixed to the tube by a mounting surface on the lower edge that aligns with and positions the blade on the tube;
• advancing said endoscope so that the blade moves in contact with the A1 pulley through the slot;
• operatively engaging the A1 pulley with the blade;
• and
• advancing the blade through the cannula to divide the A1 pulley.