| 摘要 |
PROBLEM TO BE SOLVED: To fix an access port to a biological membrane such as a pericardium in a state that the biological membrane is penetrated.SOLUTION: An access port 1 includes an inner cylinder 2 and an outer cylinder 3 engaged in a manner to make a relative movement in an axial direction, and has generally complementary-shaped holding surfaces 2e and 3c that are moved close to or away from each other by the relative movement of the inner cylinder 2 and the outer cylinder 3 on at least one of the inner cylinder 2 and the outer cylinder 3. |
