Measuring device for the electrical measurement of test strips
First Claim
1. A measuring device for electrically measuring test strips (18) for determining the concentration of substances in liquids with each test strip (18) having a test field (24) to be moistened by a liquid to be investigated, from which test field two electrodes (26) lead to first contact elements (28) on the test strip, the measuring device (10) having a test strip receiver (30) in which are arranged two second contact elements (42) for contacting the first contact elements (28), which two second contact elements are connected with a measuring and evaluation circuit of the measuring device (10), characterized in that the two second contact elements are formed respectively by two contact paths (38) on a conductor plate (32) located in the measuring device (10) and carrying the measuring and evaluation circuits the conductor plate (32) having a first surface facing the two electrodes (26) of a test strip (18) when the test strip is received in the test strip receiver (30) and the contact paths (38) which form the second contact elements being in engagement with and fixed to the first surface of the conductor plate so that the second contact elements are not movable, resiliently or otherwise, relative to the conductor plate.
1 Assignment
0 Petitions
Accused Products
Abstract
In a measuring device for measuring the concentration of a substance in a liquid applied to the test field of a test strip having two first electrical contacts at its forward end connected to the test field, a conductor plate inside of the device carries a measuring and evaluation circuit and also has formed on it two second electrical contacts which two second electrical contacts, when the forward end of the test strip is inserted into the device through an insertion slot, are brought into contact with the two first contacts on the test strip to connect the test field of the test strip in circuit with the measuring and evaluation circuit of the conductor plate.
18 Citations
17 Claims
- 1. A measuring device for electrically measuring test strips (18) for determining the concentration of substances in liquids with each test strip (18) having a test field (24) to be moistened by a liquid to be investigated, from which test field two electrodes (26) lead to first contact elements (28) on the test strip, the measuring device (10) having a test strip receiver (30) in which are arranged two second contact elements (42) for contacting the first contact elements (28), which two second contact elements are connected with a measuring and evaluation circuit of the measuring device (10), characterized in that the two second contact elements are formed respectively by two contact paths (38) on a conductor plate (32) located in the measuring device (10) and carrying the measuring and evaluation circuits the conductor plate (32) having a first surface facing the two electrodes (26) of a test strip (18) when the test strip is received in the test strip receiver (30) and the contact paths (38) which form the second contact elements being in engagement with and fixed to the first surface of the conductor plate so that the second contact elements are not movable, resiliently or otherwise, relative to the conductor plate.
Specification