Endoscopic surgical apparatus comprising an anchoring means (5) for anchoring a living tissue, and a piercing means (3) for piercing said living tissue, each means being driven by an independent driving means. The anchoring means (5) and the piercing means (3) are able to move along parallel axes that extend outside a distal end (1) of a catheter, allowing piercing a living tissue on a short length without having to fold the living tissue.