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Methods for modulation of flow in a flow pathway

A technology of flow regulation and flow path, applied in the direction of fluid flow, chemical instruments and methods, circuit components, etc., can solve problems such as loss of effectiveness, increased manufacturing costs, and complex valves

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

Traditional valves used in microfluidic devices can be complex, which increases manufacturing costs and increases the risk of valve failure
In addition, the pressure required to cause fluid to pass through the valve (i.e., burst pressure) is relatively small, making them useless in many applications

Method used

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  • Methods for modulation of flow in a flow pathway
  • Methods for modulation of flow in a flow pathway
  • Methods for modulation of flow in a flow pathway

Examples

Experimental program
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Effect test

Embodiment Construction

[0012] The present invention provides methods for regulating the flow of liquids. Embodiments of the method of the present invention include introducing a liquid into a flow regulating passageway having a hydrophobic region connected to a capillary channel comprising at least one pressure-reducing junction, thereby terminating said liquid in a region comprising said hydrophobic region and said in a region of said path of said at least one step-down contact.

[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, vary. It should also be understood that the technical terms used herein are for the purpose of describing particular embodiments only, and are not intended to define the scope of the invention, which will be limited only by the appended claims.

[0014] Where numerical ranges are given, it is understood that every intervening value between the upper and l...

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PUM

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Abstract

The present invention provides a method used for adjusting liquid flow.

Description

Background technique [0001] Valves are used in a variety of applications where it is necessary to control the flow of liquids along a liquid flow path. For example, in pharmaceutical applications, biotechnology applications, life science applications, biomedical applications, public health applications, agricultural applications, etc., valves can be used to control the flow of liquids. [0002] Depending on the system and the flow rate, valve sizes can range from very large to very small. For example, one application of valves is in the field of microfluidics, which broadly refers to the technique of controlling the flow of tiny quantities of liquids in miniaturized systems. For example, microfluidic devices used for sampling and analyzing biological fluids require microvalves to control the flow of fluids in the device. Conventional valves used in microfluidic devices can be complex, which increases manufacturing costs and increases the risk of valve failure. Furthermore, ...

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
CPCF16K2099/0086B01L3/502738F16K2099/0074F16K2099/0078F16K99/0001B01L2400/0688B01L2300/0645B01L2400/0406F16K99/0017F16K2099/0084B01L2400/0487F15D1/08F15D1/00
Inventor S·贝姆A·W·麦奈拉格
Owner LIFESCAN SCOTLAND
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