| 摘要 |
A stopcock (10) for use with a glass cane, comprising: a body (12) for attachment to one end of a glass cane, the body having a channel (22) therethrough which in use communicates with fluid in a glass cane when the body is attached to one end thereof; and a key (14) rotatably mounted in the channel (22), the key (14) being configured to allow fluid to flow through the channel (22) when in one orientation relative to the body (12) and to prevent fluid flowing through the channel (22) when in another orientation, characterized in that the key (14) and body (12) have interengageable profiles (32, 34) which are configured to retain the key (14) in the body (12) when interengaged.
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