| 摘要 |
A valve which includes a stem having a slit at an end thereof. The valve stem is located in a valve body and is deformable. When a tip of an instrument is engaged with a slit in the stem, the stem shifts in the valve body, top portion folds inward, the slit seals against the instrument and allows liquid to flow through the stem, to or from the instrument. All components have circular cross sectional geometry.
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