WO2008022048A3 - Microfluidic valve having free-floating member and method of fabrication - Google Patents

Microfluidic valve having free-floating member and method of fabrication Download PDF

Info

Publication number
WO2008022048A3
WO2008022048A3 PCT/US2007/075746 US2007075746W WO2008022048A3 WO 2008022048 A3 WO2008022048 A3 WO 2008022048A3 US 2007075746 W US2007075746 W US 2007075746W WO 2008022048 A3 WO2008022048 A3 WO 2008022048A3
Authority
WO
WIPO (PCT)
Prior art keywords
floating member
valve seat
valve
fluid
valves
Prior art date
Application number
PCT/US2007/075746
Other languages
French (fr)
Other versions
WO2008022048A2 (en
Inventor
Yu-Chong Tai
Po-Jui Chen
Damien C Rodger
Mark S Humayun
Original Assignee
California Inst Of Techn
Yu-Chong Tai
Po-Jui Chen
Damien C Rodger
Mark S Humayun
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by California Inst Of Techn, Yu-Chong Tai, Po-Jui Chen, Damien C Rodger, Mark S Humayun filed Critical California Inst Of Techn
Priority to ES07800089.0T priority Critical patent/ES2533901T3/en
Priority to MX2009001504A priority patent/MX2009001504A/en
Priority to EP20070800089 priority patent/EP2049283B1/en
Priority to JP2009524019A priority patent/JP4977758B2/en
Publication of WO2008022048A2 publication Critical patent/WO2008022048A2/en
Publication of WO2008022048A3 publication Critical patent/WO2008022048A3/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K99/00—Subject matter not provided for in other groups of this subclass
    • F16K99/0001—Microvalves
    • F16K99/0003—Constructional types of microvalves; Details of the cutting-off member
    • F16K99/0005—Lift valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K99/00—Subject matter not provided for in other groups of this subclass
    • F16K99/0001—Microvalves
    • F16K99/0003—Constructional types of microvalves; Details of the cutting-off member
    • F16K99/0015—Diaphragm or membrane valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K99/00—Subject matter not provided for in other groups of this subclass
    • F16K99/0001—Microvalves
    • F16K99/0034—Operating means specially adapted for microvalves
    • F16K99/0055—Operating means specially adapted for microvalves actuated by fluids
    • F16K99/0057—Operating means specially adapted for microvalves actuated by fluids the fluid being the circulating fluid itself, e.g. check valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/14—Check valves with flexible valve members
    • F16K15/144—Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/0318—Processes
    • Y10T137/0402—Cleaning, repairing, or assembling
    • Y10T137/0491—Valve or valve element assembling, disassembling, or replacing
    • Y10T137/0497—Fluid actuated or retarded
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7866—Plural seating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7904—Reciprocating valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7904—Reciprocating valves
    • Y10T137/7908—Weight biased
    • Y10T137/7909—Valve body is the weight
    • Y10T137/7913—Guided head
    • Y10T137/7914—Cage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49405—Valve or choke making
    • Y10T29/49409—Valve seat forming

Abstract

Micro check valves having a free-floating member for controlling flow of fluid in microfluidic and biomedical applications and methods of fabrication. A micro check valve includes a valve seat, a valve cap that contacts the valve seat and an untethered floating member that can move between the valve seat and the valve cap. Certain micro check valves have zero cracking pressure and no reverse leakage. Certain other valves may be configured to permit flow of fluid within a pressure range. The floating member can be solid or define an orifice, and the valve seat can have one or two levels. Valves can be configured to allow fluid to flow when the floating member is pushed by fluid against the valve cap or against the valve seat. The valve seat may be silicon or another material that is compatible with micromachining processes, and the valve cap and the floating member may be a polymer such as Parylene.
PCT/US2007/075746 2006-08-10 2007-08-10 Microfluidic valve having free-floating member and method of fabrication WO2008022048A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
ES07800089.0T ES2533901T3 (en) 2006-08-10 2007-08-10 Microfluidic valves with floating element and manufacturing procedure
MX2009001504A MX2009001504A (en) 2006-08-10 2007-08-10 Microfluidic valve having free-floating member and method of fabrication.
EP20070800089 EP2049283B1 (en) 2006-08-10 2007-08-10 Microfluidic valve having free-floating member and method of fabrication
JP2009524019A JP4977758B2 (en) 2006-08-10 2007-08-10 Microfluidic valve having free floating member and method of manufacturing the same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US83688306P 2006-08-10 2006-08-10
US60/836,883 2006-08-10

Publications (2)

Publication Number Publication Date
WO2008022048A2 WO2008022048A2 (en) 2008-02-21
WO2008022048A3 true WO2008022048A3 (en) 2008-11-20

Family

ID=39083009

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/075746 WO2008022048A2 (en) 2006-08-10 2007-08-10 Microfluidic valve having free-floating member and method of fabrication

Country Status (6)

Country Link
US (2) US7600533B2 (en)
EP (2) EP2884141A1 (en)
JP (1) JP4977758B2 (en)
ES (1) ES2533901T3 (en)
MX (1) MX2009001504A (en)
WO (1) WO2008022048A2 (en)

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Also Published As

Publication number Publication date
EP2049283A2 (en) 2009-04-22
JP4977758B2 (en) 2012-07-18
EP2049283B1 (en) 2015-02-18
JP2010500518A (en) 2010-01-07
EP2884141A1 (en) 2015-06-17
US7600533B2 (en) 2009-10-13
WO2008022048A2 (en) 2008-02-21
US20080035875A1 (en) 2008-02-14
US20100025613A1 (en) 2010-02-04
ES2533901T3 (en) 2015-04-15
EP2049283A4 (en) 2013-02-20
MX2009001504A (en) 2009-08-31
US8141573B2 (en) 2012-03-27

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