Cartridge test system for the collection and testing of blood in a single step

• US 5,714,390 A
• Filed: 10/15/1996
• Issued: 02/03/1998
• Est. Priority Date: 10/15/1996
• Status: Expired due to Fees

• Current Assignee: Bio-Tech Imaging Incorporated
• Original Assignee: Bio-Tech Imaging Incorporated
• Inventors: Hallowitz, Robert A., King, Chester F.
• Primary Examiner(s): WOLSKI, SUSAN C
• Application Number:
  US08/732,784
• Time in Patent Office: 476 Days
• Field of Search: 128/770, 422/55, 422/58, 422/82.05, 435/7.92, 435/7.94, 435/970, 435/975, 436/518, 436/526, 436/63, 436/164, 436/800, 436/805, 436/808, 436/824, 604/272, 604/327, 604/346, 604/403, 604/411, 604/414, 604/416, 606/167, 606/181, 606/183, 606/185
• US Class Current: 436/526
• CPC Class Codes: B01L 3/502 with fluid transport, e.g. in multi-compartment structures centrifugal-type cuvettes G01N21/07; analysis by separation into components G01N30/00; automatic analysers G01N35/00
• CPC Class Codes: G01N 2035/00752 bar codes
• CPC Class Codes: G01N 33/54333 Modification of conditions of immunological binding reaction, e.g. use of more than one type of particle, use of chemical agents to improve binding, choice of incubation time or application of magnetic field during binding reaction
• CPC Class Codes: G01N 33/54366 Apparatus specially adapted for solid-phase testing
• CPC Class Codes: G01N 33/56988 HIV or HTLV
• CPC Class Codes: Y10S 435/97 Test strip or test slide
• CPC Class Codes: Y10S 435/975 Kit
• CPC Class Codes: Y10S 436/80 Fluorescent dyes, e.g. rhodamine
• CPC Class Codes: Y10S 436/805 Optical property
• CPC Class Codes: Y10S 436/808 Automated or kit
• CPC Class Codes: Y10S 436/824 Immunological separation techniques

Abstract

The invention is a device and a method for collecting samples mixing the samples with test reagents, and acting as a container in which the mixture can be incubated and the test reaction viewed by microscope or imaging device. This device enables an entire test to be performed in one simple step without complicated handling procedures. The device consists of a cartridge with a well with micro-lances imbedded in the bottom of the well and an overlying micro-baggy containing a mixture of reagents. There are two reagents present in the micro-baggy: the first consisting of antibodies coupled to paramagnetic microspheres and the second consisting of antibodies coupled with a fluorochrome. A test subject presses down onto the micro-baggy and at the same time punctures his/her finger or thumb on the micro-lances. Once the finger has been lanced, breaking the micro-baggy, the reagents mix with the test subject'"'"'s blood. The well is then covered by a clear mylar strip. After incubation the cartridge is moved to a viewing platform. A magnetic gradient is applied to the side of the well causing the magnetic separation of antibodies bound to infected peripheral blood lymphocytes from uninfected peripheral blood lymphocytes. A focused light source is applied to the well, causing antibodies bound to infected peripheral blood lymphocytes if any are present, to glow at the specific emmision frequency determined by the specific fluorochome. The test subject can be identified by a bar code strip attached to the cartridge.

Claims

1. A cartridge antigen test system for collection and testing of a blood sample from a subject in a single step, comprising:

a) a collection/processing cartridge having a well with a bottom, said well comprising a depression in said cartridge, for collection of said blood sample, wherein said bottom of said well is transparent to allow passage of light;

b) at least one lance disposed on said bottom of said well for piercing said subject to collect said blood sample;

c) a baggy containing a reagent or reagents disposed above said at least one lance to allow release of said reagent or reagents when said subject is pierced by said at least one lance; and

d) a clear covering material attached to an end of said cartridge for coveting said well.

2. The cartridge antigen test system of claim 1, further comprising an adhesive fastener, at an end of said cartridge opposite to said end where said coveting material is attached, for sealing said covering material over said well after collection of said blood sample.

3. The cartridge antigen test system of claim 1, further comprising a bar code for identification.

4. The cartridge antigen test system of claim 1, further comprising a light source for detection of said reagent or reagents.

5. The cartridge antigen test system of claim 1, wherein said reagent or reagents comprise i) antibodies coupled to magnetic or paramagnetic particles and ii) antibodies conjugated to a fluorochrome, wherein each of said antibodies binds to a test substance of interest.

6. The cartridge antigen test system of claim 1, wherein said reagent or reagents comprise multiple pairs of i) antibodies coupled to magnetic or paramagnetic particles and ii) antibodies conjugated to a fluorochrome, wherein each of said multiple pairs of antibodies binds to one of multiple test substances of interest.

7. The cartridge antigen test system of claims 5 or 6, further comprising a means for producing a magnetic field for magnetically separating said magnetic or paramagnetic particles.

8. The cartridge antigen test system of claim 1, wherein said reagent or reagents comprise i) a capture antigen coupled to latex particles and ii) anti-immunoglobulin conjugated to a fluorochrome, wherein each of said capture antigen and said anti-immunoglobulin bind to an antibody of interest.

9. The cartridge antigen test system of claim 1, wherein said reagent or reagents comprise multiple pairs of i) capture antigen coupled to latex particles and ii) anti-immunoglobulin conjugated to a fluorochrome, wherein each of said multiple pairs of capture antigen and anti-immunoglobulin binds to one of multiple antibodies of interest.

10. A method for collection and testing of a blood sample from a subject for a test substance of interest in a single step using the cartridge antigen test system of claim 1, comprising:

a) pressing a thumb or finger of said subject onto said baggy and said at least one lance to draw blood from said subject into said well and release said reagent or reagents from said baggy into said well;

b) covering said well with said clear covering material;

c) incubating said sample and said reagent or reagents to allow reaction of said sample with said reagent or reagents to produce a signal indicative of said test substance of interest;

d) observing said well for said signal to thereby determine said test substance of interest.

11. The method of claim 10,

wherein said reagent or reagents comprise i) antibodies coupled to magnetic or paramagnetic particles and ii) antibodies conjugated to a fluorochrome, and wherein each of said antibodies binds to a test substance of interest, and

said method further comprises producing a magnetic field to magnetically separate said magnetic or paramagnetic particles, and applying a light source for determination of said fluorochrome and consequently said test substance of interest.

12. The method of claim 10,

wherein said reagent or reagents comprise multiple pairs of i) antibodies coupled to magnetic or paramagnetic particles and ii) antibodies conjugated to a fluorochrome, and wherein each of said multiple pairs of antibodies binds to one of multiple test substances of interest, and

said method further comprises producing a magnetic field to magnetically separate said magnetic or paramagnetic particles, and applying a light source for determination of said fluorochrome and consequently said multiple test substances of interest.

13. The method of claim 10,

wherein said reagent or reagents comprise i) a capture antigen coupled to latex particles and ii) anti-immunoglobulin conjugated to a fluorochrome, and wherein each of said capture antigen and said anti-immunoglobulin binds to a test substance of interest, and

said method further comprises applying a light source for determination of said fluorochrome and consequently said test substance of interest.

14. The method of claim 10,

wherein said reagent or reagents comprise multiple pairs of i) capture antigen coupled to latex particles and ii) anti-immunoglobulin conjugated to a fluorochrome, and wherein each of said multiple pairs of said capture antigen and said anti-immunoglobulin binds to one of multiple test substances of interest, and

said method further comprises applying a light source for determination of said fluorochrome and consequently said multiple test substances of interest.