| 摘要 |
In accordance with the present invention, there is provided an improved device for the dialysis of small fluid samples, particularly biological fluids. The device of the present invention contains a cylindrical outer sleeve open at both ends. The sidewall portion of the sleeve near the top end contains a channel in and around the inner surface and the sidewall continues to extend upwardly from the channel to the open top end. An inner sleeve is positioned within and in axial alignment with the outer sleeve. The inner sleeve has a cylindrical flange at an open top end that is inserted in the channel of the outer sleeve. The bottom end of the inner sleeve is open and extends below the bottom end of the outer sleeve. A space exists between the sidewalls of the two sleeves near the bottom end of the outer sleeve. A dialysis membrane covers the open bottom end of the inner sleeve. The membrane extends upwardly and around the sidewall of the sleeve and fills the space between the sidewalls of the sleeves near the bottom end of the outer sleeve so that the sleeves are in an airtight relationship in this region.
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