Patent ID: 7914494

Claim:
An indwelling catheter comprising: an outer needle arranged in a longitudinal direction; a female connector having a hollow form opened at its front and rear ends and being provided on a rear portion of the outer needle in a state of communicating with the rear portion; an elastically deformable hemostasis valve disposed in the female connector; and a tubular connecting means for connecting the outer needle with the hemostasis valve and being integrated with the outer needle or the female connector, the tubular connecting means being arranged in a longitudinal direction, communicating with the outer needle, being located in the female connector, and being opened at its rear end; wherein the hemostasis valve includes: a hemostasis valve tubular portion fitted over the tubular connecting means from a rearward direction and reducible in size by forward elastic deformation; and a hemostasis valve openable/closable portion integrated with a rear end of the hemostasis valve tubular portion to close a rear end opening of the tubular connecting means, and provided with a slit formed to extend in a radial direction, the slit being opened by being elastically deformed in a radially outward direction owing to the reduction in size of the hemostasis valve tubular portion.