Lateral flow assay with test strip retainer
First Claim
1. A lateral flow test device system, comprising:
- a test strip, the test strip comprising;
a substantially uncompressible base layer, anda compressible bibulous material disposed on the base layer for absorbing a fluid sample; and
a base, the base comprising;
a floor,a first vertical wall extending from the floor, anda second vertical wall extending from the floor,wherein a recess configured for receiving the test strip is formed between the first and second vertical walls,wherein the first vertical wall comprises a first engagement structure and the second vertical wall comprises a second engagement structure and the first and second engagement structures define a space within the recess between the engagement structures and the floor, the space being configured to receive the base layer of the test strip, andwherein the first and second engagement structures are configured to contact the bibulous material without contacting the base layer when the base layer is received within the space so as to properly position the test strip within the base for testing the fluid sample.
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Accused Products
Abstract
It is an object of the present invention to provide improved methods and compositions for manufacture and use of lateral flow test devices. In particular, the present invention provides a molding method which provides one or more features in the housing base configured to retain the test strip within the base. These features are provided as undercuts in the housing base. The test strip is configured as a bibulous lateral flow material disposed on a substantially non-compressible base layer, and the base layer is positioned within the undercut in order to retain the test strip in the housing base. Optionally, one or more features in the housing base which create the undercut are configured to engage the bibulous lateral flow material by compression and/or friction, thereby increasing the ability of the base to maintaining the test strip in its proper position within the device.
131 Citations
20 Claims
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1. A lateral flow test device system, comprising:
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a test strip, the test strip comprising; a substantially uncompressible base layer, and a compressible bibulous material disposed on the base layer for absorbing a fluid sample; and a base, the base comprising; a floor, a first vertical wall extending from the floor, and a second vertical wall extending from the floor, wherein a recess configured for receiving the test strip is formed between the first and second vertical walls, wherein the first vertical wall comprises a first engagement structure and the second vertical wall comprises a second engagement structure and the first and second engagement structures define a space within the recess between the engagement structures and the floor, the space being configured to receive the base layer of the test strip, and wherein the first and second engagement structures are configured to contact the bibulous material without contacting the base layer when the base layer is received within the space so as to properly position the test strip within the base for testing the fluid sample. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification