Medical suture needle

A medical suture needle comprising a cutting-edge portion and a body portion continuously connected to the cutting-edge portion, wherein the cutting-edge portion comprises:

• one bottom part;
• two slopes;
• a sharp pointed end configured by convergence of the bottom part and the two slopes;
• cutting-edges extending from the sharp pointed end, each cutting-edge being configured by connection of the bottom part and each slope;
• a top part extending from the sharp pointed end and configured by connection of the two slopes,
• thickness of the cutting-edge portion decreases from the body portion to the sharp pointed end,
• each slope comprises a curved groove having a predetermined dimension,
• each curved groove extends, along the top part, from a position on the cutting-edge isolated from the sharp pointed end by a predetermined distance,
• each cutting-edge between a pointed-end-side end and a body-portion-side end of the curved groove is configured by the bottom part and a curved surface constituting the curved groove,
• a lower portion of each curved groove is defined by a bottom edge of a contour of the groove and is isolated from the cutting edge toward the top part as the lower portion extends from a position on a body-portion-side end of each curved groove toward the body portion, whereby each cutting-edge located from the body-portion-side end to the body portion is configured by the bottom part and each slope, and
• a cross-section of the cutting-edge portion has:
• a triangle shape between the pointed end and the pointed-end-side end;
• a pentagonal shape between the pointed-end-side end and the body-portion-side end;
• and a triangle shape in each cutting-edge located from the body-portion-side end to the body portion.