Pump for low flow rates
First Claim
1. Pump for low flow rates comprising a channel which is at least partially filled with a transport liquid (3) a membrane (4, 12) at one opening of the channel that can be wetted by the transport liquid, a space having an essentially constant vapour pressure of the transport liquid located at the side of the membrane opposite to the transport liquid.
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Accused Products
Abstract
The present invention concerns a pump for flow rates from about 1 to 1000 nl/min in which liquid transport takes place by evaporation of a transport liquid through a wettable membrane. The pumps according to the invention are particularly suitable for applications in the field of medical diagnostics such as microdialysis or ultrafiltration.
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Citations
22 Claims
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1. Pump for low flow rates comprising
a channel which is at least partially filled with a transport liquid (3) a membrane (4, 12) at one opening of the channel that can be wetted by the transport liquid, a space having an essentially constant vapour pressure of the transport liquid located at the side of the membrane opposite to the transport liquid.
Specification