Test strip for blood glucose determination
First Claim
1. A test strip for use with a photometer for determining blood glucose concentration from a blood sample, said strip comprising:
- a substrate having a top surface and an opposing bottom surface, said substrate having an aperture formed therethrough, said aperture being adapted to receive and receiving a droplet of blood;
a porous membrane having a top surface and an opposing bottom surface, said top surface of said membrane adhered to said bottom surface of said substrate so that said membrane is in registration with said aperture in said substrate, said porous membrane filters red blood cells from plasma in said blood; and
a reagent carried on said bottom surface of said membrane, the interior of said membrane being substantially free of said reagent, said reagent reacts with glucose in blood plasma.
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Accused Products
Abstract
A test strip for determining blood glucose concentration includes a test strip and a photometer. The test strip comprises a substrate formed with an aperture, a polymeric membrane adhered to the aperture and in registration with the aperture, having a quantity of reagent on its bottom surface of the membrane. The polymeric membrane is adhered to the bottom of the substrate by double sided tape. The placement of the reagent on the bottom surface of the membrane allows filtration of the red blood cells from plasma before the glucose in the blood reaches the reagent and carries with it oxygen to drive the glucose-reagent reaction to completion. The photometer includes an infrared LED for detecting glucose components in the reacted test strip and simple, one-button operation.
31 Citations
9 Claims
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1. A test strip for use with a photometer for determining blood glucose concentration from a blood sample, said strip comprising:
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a substrate having a top surface and an opposing bottom surface, said substrate having an aperture formed therethrough, said aperture being adapted to receive and receiving a droplet of blood;
a porous membrane having a top surface and an opposing bottom surface, said top surface of said membrane adhered to said bottom surface of said substrate so that said membrane is in registration with said aperture in said substrate, said porous membrane filters red blood cells from plasma in said blood; and
a reagent carried on said bottom surface of said membrane, the interior of said membrane being substantially free of said reagent, said reagent reacts with glucose in blood plasma. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification