Medical connector

An assembly comprising:

• a closed female connector portion that comprises an opening formed in a top wall, and a valve body blocking the opening and having a slit, an outer peripheral edge portion of the valve body being secured to the top wall;
• and
• a male connector portion that is connectable to the closed female connector portion of a medical connector,
• wherein the male connector portion comprises:
• a limiting portion configured to limit an insertion depth of a tubular body into the opening by directly contacting a top surface of the top wall of the closed female connector portion of the medical connector when the male connector portion is connected to the closed female connector portion,
• an enlarged portion extending from a distal end side of the limiting portion and configured to surround the slit and to directly contact a top surface of the valve body when the male connector portion is connected to the closed female connector portion, wherein a diameter of the enlarged portion at a distal end side of the enlarged portion is less than a diameter of the limiting portion,
• the tubular body extending from the distal end side of the enlarged portion and being insertable into the slit, wherein an outer diameter of the tubular body is less than an outer diameter of the enlarged portion, and wherein the outer diameter of the tubular body is equal to or less than a length that is twice a distance between a center of the top surface of the valve body and an end of the slit that is radially furthest from the center, and
• a locking portion configured to keep the male connector portion connected to the closed female connector portion.