Patent ID: 8147774

Claim:
A micro passage chip comprising at least a first substrate of an elastic material, a second substrate, and an intermediate substrate of an elastic material interposed between the first substrate and the second substrate, further comprising: a first non-adhesive thin-film layer is formed on at least one of the mating sides of the first substrate and the intermediate substrate and at least one port for fluids that is in contact with the first non-adhesive thin-film layer and which is open to the outer surface of the first substrate is provided in any position on the first non-adhesive thin-film layer, a second non-adhesive thin-film layer whose length is either the same as or different from that of the first non-adhesive thin-film layer is formed on at least one of the mating sides of the second substrate and the intermediate substrate such that it lies either above or under the first non-adhesive thin-film layer, and parallel thereto, with the intermediate substrate lying in between, and a pressurizing port that is in contact with the second non-adhesive thin-film layer and which is open to the outer surface of the first or the second substrate is provided in at least one area on the second non-adhesive thin-film layer; a first non-adhesive part disposed in an interface area between the first substrate and the intermediate substrate where the first non-adhesive thin-film layer is formed; a second non-adhesive part disposed in a second interface area between the second substrate and the intermediate substrate where the second non-adhesive thin-film layer is formed; wherein under a non-pressure state at the pressurizing port, both the first non-adhesive part and the second non-adhesive part have no capacity, and wherein under a positive pressure state at the pressurizing port, the first substrate corresponding to the first non-adhesive part deforms to form a channel for the fluids, and the intermediate substrate corresponding to the second non-adhesive part deforms to form a microchannel adapted to squeeze the fluids through the channel.