Microfluidic valve with partially restrained element
First Claim
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1. A microfluidic valve device comprising:
- a first microfluidic channel disposed in a first layer, the first microfluidic channel having an upper surface;
a second microfluidic channel in a second layer, wherein the second microfluidic channel has at least one dimension smaller than that of the first channel, the second layer having a sealing surface; and
a flap layer disposed between the first microfluidic channel and the second microfluidic channel, the flap layer having a movable flap formed therein, wherein the flap has a closed position sealed against the sealing surface and can open into the first microfluidic channel.
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Abstract
The invention provides microfluidic devices having valves disposed therein. The valves can be configured as one-way valves. The invention also provides microfluidic pumps using two or more microfluidic valves. The valves can be configured to rest in an open or closed position. The valves also can be single use valves or can be multiple use valves. The valves may be further responsive to actuators, including electromechanical and magnetic actuators.
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26 Claims
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1. A microfluidic valve device comprising:
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a first microfluidic channel disposed in a first layer, the first microfluidic channel having an upper surface;
a second microfluidic channel in a second layer, wherein the second microfluidic channel has at least one dimension smaller than that of the first channel, the second layer having a sealing surface; and
a flap layer disposed between the first microfluidic channel and the second microfluidic channel, the flap layer having a movable flap formed therein, wherein the flap has a closed position sealed against the sealing surface and can open into the first microfluidic channel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification