| 摘要 |
<p>A puncture instrument impales a biological tissue between a urethral cavity and a vaginal cavity, and forms a through hole in the biological tissue. This puncture instrument comprises: a puncture needle which forms a lengthwise shape and further comprises, at the leading end part thereof, a needle tip which punctures the biological tissue; and a flow path which is formed along the lengthwise direction of the puncture needle and wherethrough the fluid passes. The flow path is positioned within the lengthwise direction of the puncture needle and further comprises at least one discharge aperture wherethrough the fluid is discharged. With the biological tissue being impaled with the puncture needle, in a state of a through hole having been formed, the puncture instrument is used to discharge the fluid from the discharge port, and the through hole is expanded by the discharged fluid.</p> |
