CA2198179A1 - Test kits and devices - Google Patents

Test kits and devices

Info

Publication number
CA2198179A1
CA2198179A1 CA002198179A CA2198179A CA2198179A1 CA 2198179 A1 CA2198179 A1 CA 2198179A1 CA 002198179 A CA002198179 A CA 002198179A CA 2198179 A CA2198179 A CA 2198179A CA 2198179 A1 CA2198179 A1 CA 2198179A1
Authority
CA
Canada
Prior art keywords
assay device
reading
test kit
switch actuating
assay
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002198179A
Other languages
French (fr)
Other versions
CA2198179C (en
Inventor
Michael Catt
Peter Lenko
Michael Thomas Pearson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alere Switzerland GmbH
Original Assignee
Unilever PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Unilever PLC filed Critical Unilever PLC
Publication of CA2198179A1 publication Critical patent/CA2198179A1/en
Application granted granted Critical
Publication of CA2198179C publication Critical patent/CA2198179C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
    • G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
    • G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/8483—Investigating reagent band

Abstract

A test kit for determining qualitatively or quantitatively the presence of one or more analytes in a fluid sample, comprising an assay device together with a reading device which engages with the assay device and wherein precisely located engagement of the assay device with the reading device is essential for accurate reading of the assay result, wherein precisely located engagement of the assay device with the reading device causes a 'lock-and-key' interaction, ie. a unique 3-dimensional interaction, between the assay device and reading initiation means of the reading device. Preferably the reading initiation means includes switch actuating means comprising at least one fixed projecting portion and at least one displaceable projecting portion, and a contact portion of the assay device casing comprises a recess shaped to accommodate the fixed projecting portion of the switch actuating means but not the displaceable projecting portion thereof, the contact portion also comprising an interface portion that contacts and displaces the displaceable portion of the switch actuating means when the fixed projecting portion is accommodated within the recess.

Claims (11)

1. A test kit for determining qualitatively or quantitatively the presence of one or more analytes in a fluid sample, comprising an assay device together with a reading device which engages with the assay device and wherein precisely located engagement of the assay device with the reading device is essential for accurate reading of the assay result, characterised in that precisely located engagement of the assay device with the reading device causes a 'lock-and-key' interaction between the assay device and reading initiation means of the reading device.
2. A test kit according to claim 1, characterized in that the assay device is of the type consisting essentially of a porous carrier strip or the like within a hollow casing and wherein an assay result is revealed by specific binding of a labelled reagent within a detection zone of the carrier strip, the presence of the labelled reagent within the detection zone being discernable by the reading device.
3. A test kit according to claim 1 or claim 2, characterised in that the reading device includes receiving means for receiving the assay device, and the reading initiation means comprises switch actuating means or the like which is displaceable upon receipt of the assay device within said receiving means, wherein correct receipt of the assay device causes a contact portion of said casing to contact said displaceable switch actuating means, the contact portion and the displaceable switch actuating means being cooperatively engageable via a 'lock-and-key' engagement such that only upon correct receipt of the assay device can the switch actuating means be displaced to initiate reading.
4. A test kit according to claim 3, characterised in that the switch actuating means comprises at least one fixed projecting portion and at least one displaceable projecting portion, and the contact portion of the assay device casing comprises a recess shaped to accommodate the fixed projecting portion of the switch actuating means but not the displaceable projecting portion thereof, the contact portion also comprising an interface portion that contacts and displaces the displaceable portion of the switch actuating means when the fixed projecting portion is accommodated within the recess.
5. A test kit according to claim 3 or claim 4, characterised in that the receiving means incorporates biasing means that presses the received assay device against the switch actuating means.
6. A test kit according to any one of claims 3 to 5, characterised in that the receiving means incorporates cam means that deflects the assay device away from the switch actuating means unless the assay device is correctly received by the receiving means.
7. A test kit according to claim 6, characterised in that the cam means provides a 'snap' engagement of the assay device and receiving means when the assay device is correctly received.
8. A test kit according to any one of the preceding claims, characterised in that the assay device is elongate and the receiving means comprises a slot into which at least part of the elongate assay device can fit, and in that the slot has at least one projecting lip portion extending over the mouth of the slot and which acts to retain the assay device within the slot when correctly received therein.
9. A test kit according to claim 8, characterised in that the projecting lip portion is at one end of the slot and can engage one end of the elongate assay device during insertion of the assay device into the receiving means.
10. A test kit according to claim 9, characterized in that there is a second projecting lip portion at or near the other end of the slot to retain the assay device therein.
11. A test kit for determining qualitatively or quantitatively the presence of one or more analytes in a fluid sample as claimed in claim 1 and substantially as described herein.
CA002198179A 1996-09-27 1997-02-22 Test kits and devices Expired - Fee Related CA2198179C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP96307089A EP0833145B1 (en) 1996-09-27 1996-09-27 Test kit and devices
EP96307089.1 1996-09-27

Publications (2)

Publication Number Publication Date
CA2198179A1 true CA2198179A1 (en) 1998-03-28
CA2198179C CA2198179C (en) 2009-12-22

Family

ID=8225103

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002198179A Expired - Fee Related CA2198179C (en) 1996-09-27 1997-02-22 Test kits and devices

Country Status (15)

Country Link
US (2) US6951631B1 (en)
EP (1) EP0833145B1 (en)
JP (1) JP4080566B2 (en)
KR (1) KR19980024133A (en)
AT (1) ATE231971T1 (en)
AU (1) AU739725B2 (en)
CA (1) CA2198179C (en)
CZ (1) CZ56197A3 (en)
DE (2) DE69626016T2 (en)
ES (1) ES2127127B1 (en)
FR (1) FR2754061B3 (en)
HU (2) HUP9700419A3 (en)
IT (1) IT236020Y1 (en)
PL (1) PL318719A1 (en)
ZA (1) ZA971527B (en)

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ES2127127A1 (en) 1999-04-01
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HU9700534D0 (en) 1997-04-28
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