Device with detachable test strip holder for optically evaluating a test strip
First Claim
1. A device for optically evaluating at least a test field (88) of a test strip (20), including a housing (10) with a receiving compartment (16) for the test strip (20), a measuring optical system (70, 72, 74) with a sender (70) for illuminating the test field (88), a receiver (74) for receiving light remitted from the test field (88) and an electronic evaluating and indicating device, characterized by a test strip holder (18) releasably insertable in the receiving compartment (16) with a receiving groove (30), for the test strip (20), whose width corresponds to the width of the test strip (20) over at least a portion of its length, a support plate (38) arranged on the test strip holder (18) in spaced relation to the groove bottom (32) and having a measuring opening (94), a moveably supported pressing element 40 moveable in the receiving groove (30) below the support plate (38), which pressing element is moveable between a first position in which it is generally aligned with the groove bottom (32) and a second position in which it presses the test strip (20) onto the support plate (38), and a pressing device (58, 64) for adjusting the pressing element (40) between its first and second positions.
1 Assignment
0 Petitions
Accused Products
Abstract
A device for optically evaluating test strips includes a housing carrying the measuring optics and a test strip holder insertable into and removable from the housing by sliding into and out of a receiving compartment of the housing, with the test strip holder containing all of the surfaces with which the significant portions of test strips come into contact, thereby permitting those surfaces to be easily cleaned upon removal of the test strip holder from the housing. The device also assures proper positioning of an easily inserted test strip, allows for heating of the test field to a fixed temperature, and allows for both empty and dark field calibration of the optical system.
55 Citations
11 Claims
- 1. A device for optically evaluating at least a test field (88) of a test strip (20), including a housing (10) with a receiving compartment (16) for the test strip (20), a measuring optical system (70, 72, 74) with a sender (70) for illuminating the test field (88), a receiver (74) for receiving light remitted from the test field (88) and an electronic evaluating and indicating device, characterized by a test strip holder (18) releasably insertable in the receiving compartment (16) with a receiving groove (30), for the test strip (20), whose width corresponds to the width of the test strip (20) over at least a portion of its length, a support plate (38) arranged on the test strip holder (18) in spaced relation to the groove bottom (32) and having a measuring opening (94), a moveably supported pressing element 40 moveable in the receiving groove (30) below the support plate (38), which pressing element is moveable between a first position in which it is generally aligned with the groove bottom (32) and a second position in which it presses the test strip (20) onto the support plate (38), and a pressing device (58, 64) for adjusting the pressing element (40) between its first and second positions.
Specification