Patent ID: 8858532

Claim:
A medical connector structure, which is formed at an end portion of a tube body for introducing infusion solution, liquid medicine, blood, and other liquids, the medical connector structure comprising: a first member unit forming a connector base; a second member unit which is made of a raw material different from a raw material for the first member unit and capable of being bonded at least to a raw material for the tube body, the second member unit serving as a joint between the first member unit and the tube body, the first member unit and the second member unit being formed by a two-color injection molding method under a condition that the raw material for the first member unit is harder than the raw material for the second member unit or the raw material for the second member unit is more flexible than the raw material for the first member unit, wherein the first member unit comprises: a connector-side portion comprising a flow path formed therein; an insertion portion which extends from the connector-side portion toward a tube body side and into which the tube body is inserted in a manner that an outer peripheral surface of the tube body is held in surface-contact with an inner peripheral surface of the insertion portion; and a lock portion positioned on an outside of the insertion portion, extending from the connector-side portion toward the tube body side, and having a surface provided with a projection and a recess so that a mechanical lock is formed between the first member unit and the second member unit, wherein the second member unit comprises: a lock-portion filled portion in which the raw material for the second member unit is filled into an inside and an outside of the projection and the recess so that the mechanical lock is formed between the second member unit and the lock portion; surface of the second insertion portion being aligned with a radially inner surface of the insertion portion and in which the raw material for the second member unit is filled so that the tube body is inserted, and wherein the tube body is bonded at least to the second insertion portion.