Biosensor and method for manufacturing the same
First Claim
Patent Images
1. A biosensor, comprising:
- a capillary having a channel with an inlet port for taking in a sample liquid;
a membrane for promoting movement of said sample liquid through said channel, the membrane being asymmetric and having undergone no hydrophilic treatment; and
a reaction part containing a reagent that reacts with a component to be tested in a sample liquid whose movement has been promoted by said membrane;
wherein said membrane comprises, thicknesswise, a first layer having smaller pores, and a second layer having larger pores, said first layer being held in contact with said reaction part;
and said membrane is laminated on said reaction part.
1 Assignment
0 Petitions
Accused Products
Abstract
A biosensor (I) which comprises a capillary (3) having a passage (30) fined with an inlet (30a) for taking a sample solution therein, a membrane (8) for accelerating the transference of a sample solution in the passage (30), and a reaction portion (7) containing a reagent which reacts with a component to be detected in a sample solution.
134 Citations
16 Claims
-
1. A biosensor, comprising:
-
a capillary having a channel with an inlet port for taking in a sample liquid; a membrane for promoting movement of said sample liquid through said channel, the membrane being asymmetric and having undergone no hydrophilic treatment; and a reaction part containing a reagent that reacts with a component to be tested in a sample liquid whose movement has been promoted by said membrane; wherein said membrane comprises, thicknesswise, a first layer having smaller pores, and a second layer having larger pores, said first layer being held in contact with said reaction part; and said membrane is laminated on said reaction part. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A method for manufacturing a biosensor which comprises a capillary having a channel with an inlet port for taking in a sample liquid, a membrane for promoting movement of said sample liquid through said channel, and a reaction part containing a reagent that reacts with a component to be tested in said sample liquid whose movement has been promoted by said membrane;
- the method comprising the steps of;
forming a working electrode and a counter electrode in an elongate configuration on an insulating base; forming an elongate reaction part intersecting said working electrode and said counter electrode; laminating an elongate membrane on said reaction part, said membrane being asymmetric and having undergone no hydrophilic treatment; providing a pair of walls along longitudinal edges on both sides of said reaction part and said membrane; and forming a capillary by forming a cover bridging said pair of walls; wherein said membrane comprises, thicknesswise, a first layer having smaller pores, and a second layer having larger pores, said first layer being held in contact with said reaction part. - View Dependent Claims (14, 15)
- the method comprising the steps of;
-
16. A biosensor for testing a sample liquid, comprising:
-
a capillary having a channel with an inlet port for taking in a sample liquid; a membrane for promoting movement of said sample liquid through said channel, said membrane being asymmetric and arranged not to cause hemolysis that lowers measurement accuracy in testing the sample liquid; and a reaction part containing a reagent that reacts with a component to be tested in said sample liquid whose movement has been promoted by said membrane; wherein said membrane comprises, thicknesswise, a first layer having smaller pores, and a second layer having larger pores, said first layer being held in contact with said reaction part; and said membrane is laminated on said reaction part.
-
Specification