Patent ID: 7122093

Claim:
A method for forming bonded micro-fluidic devices comprising: providing at least one first member and at least one second member in adjacent relation so as to form at least one micro-channel therebetween, said at least one micro-channel having a periphery; injecting a sealing resin between said at least one first member and said at least one second member, said sealing resin at least partially filling said at least one micro-channel; injecting a blowing agent through said at least one micro-channel so as to at least partially displace said sealing resin to said periphery of said at least one micro-channel thereby forming at least one conduit through said sealing resin, each said conduit having a periphery and adapted for fluid flow; curing said sealing resin so as to bond said at least one first member and said at least one second member together thereby forming a bonded micro-fluidic device; injecting a second sealing resin into said at least one conduit; injecting a second blowing agent through said at least one conduit so as to at least partially displace said second sealing resin to said periphery of said at least one conduit thereby forming at least one sub-conduit, each said sub-conduit adapted for fluid flow; and curing said second sealing resin.