Back to results
US 6,151,110 AGranted
Measuring device for determining the concentration of a substance in a liquid
AssigneeLRE Technology Partner GmbH
InventorErnst Markart
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeLRE Technology Partner GmbH
InventorErnst Markart
Estimating the term…
A measuring device for measuring the concentration of a substance in a liquid, especially a body liquid, is designed for use with a test card having test sections with test fields located next to one another in the longitudinal direction of the card. The device has a housing for receiving one or more test cards and has an exposed test card support surface providing a measuring station with a measuring opening through which optical or electrical sensors sense the test field of a test section of a test card. A hand actuatable transport mechanism, which may be an actuating lever, a transport roll or a transport belt is engageable with a test card in the housing to advance it forwardly to bring a test section to the measuring station. The housing for the device is made of upper and lower portions which may be movable relative to one another with that movement used to drive the transport mechanism. The device also includes a hand operable apparatus for cutting a used test section from the test card and various means are provided for inhibiting the test fields of the cards contained in the housing from coming into contact with ambient air in order to prevent the moisture and/or other factors in the ambient air from negatively influencing the usefulness of the test sections.
A measuring device for determining the concentration of a substance in a liquid, especially a body liquid, by optical or electrical measurement of a test field provided on a test card (10), onto which the liquid to be investigated is applied, including a housing containing a space for receiving at least one test card (10) and having an upper housing portion (32) and a lower housing portion (36), on which in the area of the separating plane of the housing (32) a test card support surface with a measuring station is formed, a measuring arrangement (50, 52) arranged in the area of the measuring station for measuring the test field, and evaluation and control apparatus, and an indicator (38), characterized in that both housing portions (34, 36) are movable back and forth relative to one another along a pre-given range and in that a transport element (82, 88) is coupled with one of the housing portions (34, 36), said transport element being engagable with a test card (10) located in the receiving space and having at least one test section (12) with a test field, in order to move the test card in the direction toward the measuring station in dependence on the relative shifting movement of the two housing portions (34, 36).
Dependencies are inferred from the claim text.