Biosensor for measuring changes in viscosity and/or density of a fluid
First Claim
1. A disposable biosensor for measuring changes in at least one of viscosity and density in a test fluid, including:
- a disposable housing;
a measuring chamber surrounded by the disposable housing;
a piezoelectric element disposed in the measuring chamber and constituting an oscillating unit, the piezoelectric element having a measuring surface adapted to be wetted with a measuring mixture comprising the test fluid and a reaction component;
means for disposing the reaction component inside the measuring chamber in a vicinity of and not touching the measuring surface of the piezoelectric element before any test fluid is introduced into the measuring chamber; and
access means in said disposable housing for introducing the test fluid into the measuring chamber so that the test fluid comes into contact with the reaction component and the measuring surface of the piezoelectric element upon its introduction into the measuring chamber.
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Accused Products
Abstract
A disposable biosensor for measuring changes in viscosity and/or density in a test fluid includes a disposable housing surrounding a measuring chamber. A piezoelectric element is disposed in the measuring chamber and constitutes an oscillating unit. The piezoelectric element has a measuring surface adapted to be wetted with a measuring mixture comprising the test fluid and a reaction component. The reaction component is disposed inside the measuring chamber in a vicinity of and not touching the measuring surface of the piezoelectric element before any test fluid is introduced into the measuring chamber. Access is provided in the disposable housing for introducing the test fluid into the measuring chamber so that the test fluid comes into contact with the reaction component and the measuring surface of the piezoelectric element upon its introduction into the measuring chamber.
204 Citations
22 Claims
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1. A disposable biosensor for measuring changes in at least one of viscosity and density in a test fluid, including:
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a disposable housing; a measuring chamber surrounded by the disposable housing; a piezoelectric element disposed in the measuring chamber and constituting an oscillating unit, the piezoelectric element having a measuring surface adapted to be wetted with a measuring mixture comprising the test fluid and a reaction component; means for disposing the reaction component inside the measuring chamber in a vicinity of and not touching the measuring surface of the piezoelectric element before any test fluid is introduced into the measuring chamber; and access means in said disposable housing for introducing the test fluid into the measuring chamber so that the test fluid comes into contact with the reaction component and the measuring surface of the piezoelectric element upon its introduction into the measuring chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification