Apparatus for mounting a diffusion-limiting membrane for a sensor
First Claim
1. An apparatus for mounting a diffusion-limiting membrane for a sensor comprising:
- a pair of positioning portions on a sensor having an enzyme electrode unit, said sensor also having an enzyme-immobilized membrane, said pair of positioning portions being opposite to each other with respect to said enzyme electrode unit;
a resilient thin plate having first and second engagement means for engagement with said pair of positioning portions, said first and second engagement means being spaced further apart than said pair of positioning portions so as to cause said resilient thin plate to be resiliently bent upon engagement of said engagement means with said positioning portions;
said resilient thin plate having an opening formed therein in a position which is adapted to be opposite to said enzyme electrode unit; and
said opening being covered by a diffusion-limiting membrane secured to said resilient plate.
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Accused Products
Abstract
An apparatus for mounting a diffusion-limiting membrane for a sensor in which a mounting member for mounting a diffusion-limiting membrane holding plate is movable toward and away from an enzyme electrode unit and in which, with the mounting member positioned away from the enzyme electrode unit, a diffusion-limiting membrane holding plate having a diffusion-limiting membrane mounted thereon is mounted on or removed from the mounting member, thus preventing the diffusion-limiting membrane from being slidingly rubbed with the surface of the enzyme electrode and in which, with the holding plate mounted on the mounting member, the mounting member ius moved toward the enzyme electrode unit, causing the diffusion-limiting membrane to be stuck to the surface of the enzyme electrode unit.
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Citations
24 Claims
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1. An apparatus for mounting a diffusion-limiting membrane for a sensor comprising:
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a pair of positioning portions on a sensor having an enzyme electrode unit, said sensor also having an enzyme-immobilized membrane, said pair of positioning portions being opposite to each other with respect to said enzyme electrode unit; a resilient thin plate having first and second engagement means for engagement with said pair of positioning portions, said first and second engagement means being spaced further apart than said pair of positioning portions so as to cause said resilient thin plate to be resiliently bent upon engagement of said engagement means with said positioning portions; said resilient thin plate having an opening formed therein in a position which is adapted to be opposite to said enzyme electrode unit; and said opening being covered by a diffusion-limiting membrane secured to said resilient plate. - View Dependent Claims (2)
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3. An apparatus for mounting a diffusion-limiting membrane for a sensor comprising:
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a mounting member for mounting a diffusion-limiting membrane holding plate; said mounting member having a first end, a second end, an upper surface, a bottom surface and a through-hole which extends through said upper and bottom surfaces and which is adapted to house an enzyme electrode unit for measuring a target solution disposed on a sensor at a predetermined position thereof, said mounting member having a groove formed therein for housing a diffusion-limiting membrane holding plate, said groove extending to said first end of said mounting member so as to form an opening in said mounting member which enables the housing plate to extend away from said groove; and
said mounting member being movable in both directions toward and away from said electrode unit; and
positioning means for positioning said mounting member at a first position wherein said enzyme electrode is housed within the through-hole of said mounting member and at a second position wherein said mounting member is positioned away from said enzyme electrode unit. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. An apparatus for mounting a diffusion-limiting membrane for a sensor comprising:
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a pair of positioning portions disposed on a sensor having an enzyme electrode unit, said sensor also having an enzyme-immobilized membrane, said pair of positioning portions being opposite to each other with respect to said enzyme electrode unit; a resilient thin plate adapted to be engaged with said pair of positioning portions, causing said resilient thin plate to resiliently bend to conform to the curvature of said enzyme electrode unit; said resilient thin plate having an opening in the position thereof which is adapted to be opposite to said enzyme electrode unit; and said opening being covered by a diffusion-limiting membrane secured to said resilient thin plate and one of said pair of positioning portions being immovably attached to the sensor, while the other of said pair of positioning portions is vertically movably attached to the sensor.
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Specification