Multi-cap for connecting catheter

A multi-cap for connecting a catheter, the multi-cap comprising:

• a body having an internal hole formed in a longitudinal direction and having a lower end configured to be connected to the catheter;
• a cover portion disposed on an outer side of the body in the longitudinal direction of the body and spaced from the body such that the catheter is partially inserted between the outer side of the body and the cover portion;
• a spout protruding from an upper end of the body to transmit an injection substance from an outside of the multi-cap to the internal hole;
• and
• a capping part connected to a side of the cover portion to selectively close an inlet of the spout,
• wherein a space defined between the outer side of the body and the cover portion decreases in width as the space goes toward the spout,
• wherein the body deceases in width as the body goes to the lower end,
• wherein a plurality of grooves is formed on the outer side of the body and arranged in the longitudinal direction of the body, the plurality of grooves being recessed from an even surface of the outer side of the body and configured to decrease an insertion force when the body is inserted into the catheter, wherein the body, the cover portion, the spout, and the capping part are integrally formed and are made of rubber or silicone,
• wherein the lower end of the body protrudes farther than a lower end of the cover portion,
• wherein at least one of the plurality of grooves is formed lower than the lower end of the cover portion, and
• wherein the at least one of the plurality of grooves is located at a position spaced apart from the lower end of the body, and a cross-sectional shape of the at least one of the plurality of grooves is semicircular.