Diffusion-limiting membrane holding means for sensor
First Claim
1. A diffusion-limiting membrane holding means for a sensor, comprising:
- a thin resilient plate provided in a predetermined position with an opening through which a target solution to be measured is adapted to penetrate, said thin resilient plate adapted to be bent into operative position; and
a diffusion-limiting membrane for limiting diffusion of the target solution attached to said thin resilient plate so as to cover said opening, and said diffusion-limiting membrane being dimensioned and attached to said resilient plate such that, upon a bending of said resilient plate into operative position, said plate causes a similar bending in said attached membrane.
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Accused Products
Abstract
A diffusion-limiting membrane holding means for a sensor comprising: a slender resilient thin plate, of which one shorter side serves as an engagement side, and of which one longer side is provided at its predetermined position with an engagement portion, an opening being formed in the thin plate between the engagement side and the engagement portion; and a diffusion-limiting membrane integrally attached to the thin plate as covering the opening; whereby the resliency of the thin plate causes the diffusion-limiting membrane to be stuck to the surface of an enzyme electrode unit of a sensor, thus enhancing the accuracy of concentration measurement of a target substance to be measured.
30 Citations
22 Claims
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1. A diffusion-limiting membrane holding means for a sensor, comprising:
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a thin resilient plate provided in a predetermined position with an opening through which a target solution to be measured is adapted to penetrate, said thin resilient plate adapted to be bent into operative position; and a diffusion-limiting membrane for limiting diffusion of the target solution attached to said thin resilient plate so as to cover said opening, and said diffusion-limiting membrane being dimensioned and attached to said resilient plate such that, upon a bending of said resilient plate into operative position, said plate causes a similar bending in said attached membrane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A diffusion-limiting membrane holding means for a sensor comprising:
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a thin resilient plate lengthened in one direction and provided in a predetermined position with an opening through which a target solution to be measured is adapted to penetrate; and a diffusion-limiting membrane for limiting diffusion of the target solution attached to said thin resilient plate so as to cover said opening; one longitudinal end side of said thin resilient plate serving as an engagement side adapted to be engaged with one of a pair of positioning portions disposed on a sensor, the positioning portions being opposite to each other with respect to an enzyme electrode unit of the sensor; the other longitudinal end side of said thin resilient plate serving as a holding portion; one longer side of said thin resilient plate having engagement means for engagement with the other of the positioning portions and the distance between said engagement side and engagement means being greater than the distance between the pair of positioning portions so as to cause said thin resilient plate to bow outwardly so as to essentially conform to a curved surface of the electrode. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. A diffusion-limiting membrane holding means for a sensor comprising:
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a thin resilient plate lengthened in one direction provided in a predetermined position thereof with an opening through which a target solution to be measured is adapted to penetrate; and a diffusion-limiting membrane for limiting diffusion of said target solution attached to said thin resilient plate as covering said opening; one longitudinal end side of said thin resilient plate serving as an engagement side adapted to be engaged with one of a pair of positioning portions disposed on a sensor, said positioning portions being opposite to each other with respect to an enzyme electrode unit of said sensor; the other longitudinal end side of said thin resilient plate serving as a holding portion; one longer side of said thin resilient plate serving as an engagement portion adapted to be engaged with the other of said positioning portions, wherein said one longitudinal end side of the thin resilient plate is arcuate around the center of the opening.
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22. A diffusion-limiting membrane holding means for a sensor, comprising:
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a thin resilient plate having formed therein an opening through which a target solution to be measured is adapted to penetrate, said thin resilient plate having an elongated length and said thin resilient plate having a cross-sectional thickness which is essentially equal over the entire elongated length of said thin resilient plate; and a diffusion-limiting membrane for limiting diffusion of the target solution attached to said thin resilient plate so as to cover said opening.
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Specification