| 摘要 |
A device for engaging an elongate object comprises an elongate toroidal vessel <B>T</B> having a valve <B>V</B> by which the vessel <B>T</B> may be filled with fluid, the vessel <B>T</B> being made of flexible material and the toroidal vessel <B>T</B> defining and encompassing an elongate passageway <B>3</B> through the vessel <B>T</B> for receiving the elongate object. The fluid may be liquid or air. The device may be use in a method for extracting semen from a male mammal or as a masturbation device. Also disclosed is a device for engaging an object comprising of a torus <B>T</B> of flexible fluid tight material filled with fluid about a central passageway <B>3</B>, the torus T having a closed toroidal space and means <B>6, 10</B> connected to the surface of the material for rotating the surface about the toroidal space, thereby to bring the object into the central passageway <B>3,</B> further holding the object in place by restricting the rotation of the toroidal space.
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