| 摘要 |
PROBLEM TO BE SOLVED: To prevent penetration or damages of a housing by interrupting movement in an advancing direction of a movable needle by a simple configuration.SOLUTION: A catheter assembly 10 includes an inner cylinder 70, an inner needle 20 freely movable forward and backward relative to the inner cylinder 70, and a shutter member 60 for interrupting the advance movement of the inner needle 20. The inner cylinder 70 has an internal space 72a for arranging the shutter member 60 on the moving route of the inner needle 20. The shutter member 60 is constituted of a deformation part 66 which can be extended to the internal space 72a so as to close the moving route of the inner needle 20 when the inner needle 20 is moved backward, and a fixed part 62 positioned and fixed to the internal space 72a and supporting extension of the deformation part 66. |
