Access port

Abstract

An access port (10) used by being connected to a catheter (C) includes a port body (11) including a liquid storage portion (11a) and a diaphragm body (60) covering the liquid storage portion (11a). The port body (11) includes a connection passage (40) that is connected to the liquid storage portion (11a) and allows the liquid storage portion (11a) to communicate with the inside of the catheter (C). In the cross section along the axial direction (D1) of the connection passage (40) at the connection position (P) where the connection passage (40) is connected to the liquid storage portion (11a), the length (L) in the direction perpendicular to the axial direction (D1) between the surface (60 a) of the diaphragm body (60) on the side opposite to the liquid storage portion (11a) and the inner surface of the liquid storage portion (11a) gradually decreases as it proceeds away from the connection position (P) in the inclined region (S) exceeding half of the liquid storage portion (11a) along the axial direction (D1).