| 摘要 |
PROBLEM TO BE SOLVED: To provide a puncture needle improved in operability by an operator and safety of a patient.SOLUTION: A puncture needle includes: an outer cylindrical pipe having a curve-shaped tip part; and an inner needle inserted into the outer cylindrical pipe. The puncture needle includes a restriction part restricting relative movement between the outer cylindrical pipe and the inner needle by engagement between one end side of the outer cylindrical pipe and one end side of the inner needle with each other, and the restriction part includes: a linear engagement part formed in the one end side of the outer cylindrical pipe or the inner needle; and a point-like engagement part formed in the one end side of the inner needle or the outer cylindrical pipe, and guided along the linear engagement part. The linear engagement part includes a crossing guide part extending in a direction crossing a long direction of the outer cylindrical pipe or the inner needle. |
