# US 8,465,696 B2 · Dry test strip with controlled flow and method of manufacturing same

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- Number: US 8,465,696 B2
- Document ID: US8465696B2
- Status: Granted
- Kind: B2
- Application number: 11/933,292
- Filed: 2007-10-31
- Published: 2008-05-15
- Granted: 2013-06-18
- Earliest claimed: 2004-02-03
- Assignees: Polymer Technology Systems, Inc.
- Applicants: Robert Huffstodt; John P. Hancock; Emmanuel Paul Crabtree; James J. Sutor; Kimberly Zinser Huffstodt; Gregory M. Lawrence
- Inventors: Robert Huffstodt; John P. Hancock; Emmanuel Paul Crabtree; James J. Sutor; Kimberly Zinser Huffstodt; Gregory M. Lawrence
- Web page: https://patentgrep.com/patent/US8465696B2

## CPC

- G01N 21/78: producing a change of colour
- G01N 21/8483: {Investigating reagent band (test-element handling not specific to a test method G01N33/4875; analytical elements specific to chemical analysis of biological material G01N33/52; autometer with reagent band G01N35/04)}
- G01N 33/52: Use of compounds or compositions for colorimetric, spectrophotometric or fluorometric investigation, e.g. use of reagent paper {and including single- and multilayer analytical elements (immunological elements G01N33/54386; involving labelled immunochemicals G01N33/58; for haemoglobin or occult blood G01N33/72)}
- G01N 33/526: {the element being adapted for a specific analyte}
- G01N 33/92: involving lipids, e.g. cholesterol {, lipoproteins, or their receptors (steroid hormones G01N33/743)}
- G01N 2021/8494: {Measuring or storing parameters of the band}
- G01N 2021/8654: {Mechanical support; Mounting of sheet}
- G01N 2201/0221: Portable; cableless; compact; hand-held
- G01N 2800/044: Hyperlipemia or hypolipemia, e.g. dyslipidaemia, obesity
- Y10T 29/49826: Assembling or joining
- G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A dry test strip assembly includes: a carrier base having a test port and a well adapted for receiving a dry test strip element, and a cover having a sample opening. The cover can be snapped onto the base with the sample opening aligned over the test port and with a test strip element compressed between the base and cover. A maximum dry test strip compression stop controls the maximum compression on the dry test strip, and a minimum dry test strip compression stop controls the minimum compression on the dry test strip. A rib between two test ports prevents fluid flow in the dry test strip element from one side of the rib to another, thereby separating the test strip element into a plurality of separate fluid compartments. A manufacturing system efficiently assembles the dry test strip assembly without handling by humans.

## Claims

### Claim 1

A carrier system for a diagnostic dry test strip for use in measuring an analyte in a fluid sample, said carrier system comprising:
a carrier base including a test strip well configured to receive a dry test strip and a test port communicating with said well and enabling said test strip to be observed;
a cover having a sample opening; and
engagement elements on said carrier base and said cover configured to engage said cover to said carrier base with said sample opening aligned over said test port and said dry test strip compressed between said carrier base and said cover;
wherein said engagement elements include: a maximum dry test strip compression stop controlling the maximum compression on said dry test strip; and a minimum dry test strip compression stop controlling the minimum compression on said dry test strip, the engagement elements including a stop member, the minimum dry test strip compression stop being a lip that extends from an end of the stop member, the maximum dry test strip compression stop being a landing pad that extends from the stop member, the minimum dry test strip compression stop and maximum dry test strip compression stop being separated on the stop member such that they form a hook-shaped end, wherein the engagement elements include an attachment opening, the opening including an edge that engages the hook-shaped end between the lip and the landing pad.