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Flow modulation devices

A channel and capillary technology, applied in valve devices, fluid controllers, fluid flow, etc., can solve problems such as complex valves, ineffectiveness, increased manufacturing costs, and the risk of valve failure

Inactive Publication Date: 2006-01-04
LIFESCAN SCOTLAND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional valves used in microfluidic devices are complex, which increases manufacturing costs and the risk of valve failure
In addition, the pressure required to initiate flow through the valve (i.e. burst pressure) is relatively low, rendering these valves useless in many applications

Method used

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Examples

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Embodiment Construction

[0012] Means for regulating liquid flow are provided. Embodiments of the present device include a flow regulating pathway having a hydrophobic region in contact with a capillary pathway comprising at least one stepped-down junction. In some embodiments, the device consists of two substrates in contact with each other and a capillary passage between the substrates. In some embodiments, the capillary pathway consists of grooves in one or more substrates. In some embodiments, the capillary passage consists of a spacer present between the two substrates. Embodiments of the invention may also include steep edges at one or more of the step-down junctions. The invention also provides a kit comprising the device.

[0013] Before the present invention is described, it is to be understood that this invention is not limited to particular embodiments described, as such may, of course, likewise vary. It should also be understood that the terminology used herein is for the purpose of de...

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PUM

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Abstract

The present invention provides a device and a tool kit used for regulating liquid flow.

Description

Background of the invention [0001] Valves are used in many applications where it is necessary to control the flow of a liquid along a fluid flow path. For example, in pharmaceutical applications, biotechnology applications, life science applications, biomedical applications, public health applications, agricultural applications, etc., valves are used to control the flow of liquids. [0002] Valves can be sized larger or smaller depending on their system and flow. For example, the field of microfluidics is an application system using valves, which generally refers to the technology of controlling the flow of micro-fluids in micro-systems. For example, microfluidic devices for sampling and analyzing biological fluids require tiny valves to control the flow of fluids in the device. Conventional valves for microfluidic devices are complex, and this complexity increases manufacturing costs and the risk of valve failure. Furthermore, the pressure required to initiate flow through...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N35/08G01N33/48B01L3/00F15C5/00F16K99/00
CPCB01L3/502738F16K99/0001B01L2200/12B01L2400/0688F16K99/0017F15D1/08F15D1/14
Inventor S·贝姆A·W·麦奈拉格
Owner LIFESCAN SCOTLAND
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