Microchemical chip

Abstract

A microchemical chip comprises a plate-shaped substrate, with a channel formed on a surface of the substrate through which a fluid flows. A fluid storage section for storing the fluid communicates with the channel at a starting end of the channel. A fluid discharge section communicates with the channel at a terminal end of the channel. An extruding pump section is formed integrally on the substrate, at a portion of the channel in the vicinity of the fluid storage section.

1 . A microchemical chip comprising one or more channels for allowing a fluid to flow therethrough on a substrate, wherein:
 a pump section is provided on an upstream side and/or a downstream side of said channel;   said pump section is formed integrally on said substrate;   a valve section is disposed on at least said upstream side of said channel;   said valve section is formed integrally on said substrate; and   said valve section has a vibration-generating section for applying vibration to a part of said channel.   
     
     
         2 . The microchemical chip according to  claim 1 , further comprising electrodes for performing electrophoresis on said fluid, disposed on said upstream side and/or said downstream side of said channel. 
     
     
         3 . The microchemical chip according to  claim 1 , wherein said channel includes one or more sample channels for allowing one or more samples as inspection objectives to flow therethrough. 
     
     
         4 . The microchemical chip according to  claim 3 , wherein said one or more samples and a transport fluid, which correspond to said one or more sample channels, flow through said one or more sample channels respectively. 
     
     
         5 . The microchemical chip according to  claim 3 , wherein a sample supply section is provided for said one or more sample channels, for supplying said one or more samples corresponding thereto respectively. 
     
     
         6 . The microchemical chip according to  claim 5 , wherein said channel includes a merging channel, in which said one or more samples are merged with each other from said one or more sample channels. 
     
     
         7 . The microchemical chip according to  claim 6 , further comprising a vibration-generating section disposed at a portion at which merging occurs. 
     
     
         8 . The microchemical chip according to  claim 6 , wherein said valve section has a heater for applying heat to a part of said channel. 
     
     
         9 . The microchemical chip according to  claim 5 , wherein said one or more sample channels intersect with each other. 
     
     
         10 . The microchemical chip according to  claim 9 , wherein a vibration-generating section is provided at said location at which intersecting occurs. 
     
     
         11 . The microchemical chip according to  claim 5 , said sample supply section comprises a nozzle having an outlet port that is arranged to face one of said sample channels, and one of said samples is supplied to the one of said sample channels through said outlet port of said nozzle. 
     
     
         12 . The microchemical chip according to  claim 11 , wherein said sample supply section comprises:
 said nozzle;   a supply cavity that stores the one of said samples and makes communication with said outlet port of said nozzle; and   a supply actuator section that varies a volume of said supply cavity and supplies the one of said samples stored in said supply cavity to the one of said sample channels through said outlet port of said nozzle.   
     
     
         13 . The microchemical chip according to  claim 1 , wherein said channel includes one or more sample channels for allowing one or more samples as inspection objectives to flow therethrough respectively, and one transport channel for allowing a transport fluid for transporting said one or more samples to flow therethrough. 
     
     
         14 . The microchemical chip according to  claim 13 , wherein said channel includes a merging channel in which said one or more samples from said one or more sample channels are merged with said transport fluid from said one transport channel, or a merging channel in which a fluid obtained by mixing said one or more samples from said one or more sample channels is merged with said transport fluid from said one transport channel. 
     
     
         15 . The microchemical chip according to  claim 13 , wherein said one or more sample channels and said one transport channel intersect with each other, or a merging channel of said one or more sample channels and said one transport channel intersect with each other. 
     
     
         16 . The microchemical chip according to  claim 1 , wherein said valve section has a heater for applying heat to a part of said channel. 
     
     
         17 . The microchemical chip according to  claim 1 , wherein said pump section includes a pump cavity that makes communication with said channel and allows the fluid flowing through said channel to flow therethrough, and a pump actuator section that varies a volume of said pump cavity. 
     
     
         18 . The microchemical chip according to  claim 17 , wherein a valve section is provided between said channel and said cavity, and said valve section includes a valve plug arranged at a communicating section between said channel and said cavity, and a valve actuator section for operating said valve plug to selectively open and close said communicating section. 
     
     
         19 . A microchemical chip comprising one or more channels for allowing a fluid to flow therethrough on a substrate, wherein:
 a pump section is provided on an upstream side and/or a downstream side of said channel; and   said pump section is formed integrally on said substrate,   electrodes are disposed on said upstream side and said downstream side of said channel, respectively, said electrodes performing electrophoresis on said fluid in a direction opposite to a transport direction by said pump.   
     
     
         20 . The microchemical chip according to  claim 19 , wherein a valve section is disposed on at least said upstream side of said channel,
 said valve section includes a valve plug formed integrally on said substance and arranged at said channel, a valve cavity formed on said substrate, and a valve actuator section that varies a volume of said valve cavity and displaces said valve plug in directions to open and close said channel.   
     
     
         21 . The microchemical chip according to  claim 19 , wherein a valve section is disposed on at least said upstream side of said channel,
 said valve section includes a valve cavity that is formed integrally on said substrate, makes communication with said channel, and allows the fluid flowing through said channel to flow therethrough, and a valve actuator section that varies a volume of said valve cavity.   
     
     
         22 . The microchemical chip according to  claim 19 , wherein a valve section is disposed on at least said upstream side of said channel, said valve section has a vibration-generating section disposed integrally on said substrate and applying vibration to a part of said channel. 
     
     
         23 . A microchemical chip comprising one or more channels for allowing a fluid to flow therethrough on a substrate, wherein:
 a supply section is provided for supplying the fluid to said channel;   a pump section is provided on an upstream side and/or a downstream side of said channel;   said pump section and said supply section are formed integrally on said substrate;   said supply section comprises a nozzle having an outlet port that is arranged to face said channel, and the fluid is supplied to said channel through said outlet port of said nozzle.   
     
     
         24 . The microchemical chip according to  claim 23 , wherein said supply section comprises:
 said nozzle;   a supply cavity that stores the fluid and makes communication with said outlet port of said nozzle; and   a supply actuator section that varies a volume of said supply cavity and supplies the fluid stored in said supply cavity to the channel through said outlet port of said nozzle.