Method and apparatus for sample evaluation

• US 20070110623A1
• Filed: 11/17/2005
• Published: 05/17/2007
• Est. Priority Date: 11/17/2005
• Status: Active Grant

• Current Assignee: Xuehui Liu
• Original Assignee: Xuehui Liu
• Inventors: Liu, Xuehui
• Granted Patent: US 7,470,398 B2
• Time in Patent Office: Days
• US Class Current: 422/99
• CPC Class Codes: A61B 10/0045 Devices for taking samples of body liquids devices for taking blood samples A61B5/15
• CPC Class Codes: A61B 2010/0006 involving a colour change
• CPC Class Codes: B01L 2300/0663 Whole sensors
• CPC Class Codes: B01L 2300/069 Absorbents; Gels to retain a fluid
• CPC Class Codes: B01L 2400/0406 capillary forces
• CPC Class Codes: B01L 3/5029 using swabs

Abstract

A specimen testing apparatus includes an outer case and an inner case that adjustably extends beyond the bottom end of the outer case. The inner case has a plurality of test strips for biologically testing a specimen, whereby a wick affixed to the bottom end of the inner case draws the specimen into each of the test strips after the inner case is extended and the wick is exposed to the specimen. A cover is provided to protect the apparatus from contamination and to seal the apparatus after exposure to the specimen.

Claims

1. An apparatus for collecting and testing a specimen, the apparatus comprising:

an outer case, a bottom end of the outer case being open;

an extendable carrier adapted within the outer case;

a wick member affixed to a bottom end of the extendable carrier adapted to accept the specimen;

a knob rotatably coupled to a top surface of the outer case, the knob having a screw extending though threads in a top portion of the extendable carrier, whereas rotation of the knob extends and retracts the extendable carrier; and

at least one test membrane affixed to a side surface of the extendable carrier, the at least one test membrane visible through the outer case and the at least one test membrane interfaced with the wick member,

whereby the wick member is coupled to the at least one test membrane so as to transfer the specimen from the wick member to the at least one test membrane.

2. The apparatus for collecting and testing a specimen of claim 1, further comprising:

a lid removably adapted to the bottom end of the outer case, the lid providing a cover for the wick member.

3. The apparatus for collecting and testing a specimen of claim 1, wherein the outer case and the extendable carrier are cylindrically shaped.

4. The apparatus for collecting and testing a specimen of claim 1, wherein the wick member comprises an absorbent foam rubber.

5. The apparatus for collecting and testing a specimen of claim 2, further comprising a seal adapted between the outer case and the lid, preventing leakage when the lid is affixed to the outer case.

6. The apparatus for collecting and testing a specimen of claim 1, wherein rotation of the knob in a first direction extends the extendable carrier and wick member beyond the bottom end of the outer case and rotation of the knob in a second direction retracts the extendable carrier and the wick member into the outer case.

7. The method for collecting and testing a specimen, the method comprising:

providing a test kit, the test kit comprising;

an outer case;

an extendable carrier adapted within the outer case;

a wick member affixed to a bottom end of the extendable carrier for accepting the specimen;

at least one test membrane affixed to a side surface of the extendable carrier, the at least one test membrane visible through the outer case and the at least one test membrane interfaced with the wick member and

a knob rotatably coupled to a top surface of the outer case, the knob having a screw extending though threads in a top portion of the extendable carrier, whereas rotation of the knob extends and retracts the extendable carrier;

rotating the knob in a first direction, thereby extending the wick member beyond a bottom edge of the outer case;

exposing the wick member to the specimen;

transferring the specimen from the wick member to the at least one test membrane using capillary action; and

rotating the knob in an opposite direction, thereby retracting the wick member into the carrier.

8. The method for collecting and testing a specimen of claim 7, further comprising:

placing a lid over a bottom end of the outer case.

9. The method for collecting and testing a specimen of claim 7, wherein the outer case and the extendable carrier are cylindrically shaped.

10. The method for collecting and testing a specimen of claim 7, wherein the wick member comprises an absorbent foam rubber.

11. The method for collecting and testing a specimen of claim 8, the test kit further comprising a seal adapted between the bottom end of the outer case and the lid, preventing leakage when the lid is affixed to the outer case.

12. An apparatus for collecting and testing a specimen, the apparatus comprising:

an enclosure means, a bottom end of the enclosure means being open;

an extendable carrier means adapted within the enclosure means;

a wick means affixed to a bottom end of the extendable carrier means for accepting the specimen;

a means for extending and retracting the extendable carrier; and

at least one test membrane affixed to a side surface of the carrier means, the at least one test membrane visible through the enclosure means and interfaced with the wick means,

whereby the wick means is coupled to the at least one test membrane so as to transfer the specimen from the wick means to the at least one test membrane.

13. The apparatus for collecting and testing a specimen of claim 12, further comprising:

a means for sealing the enclosure means removably affixed to the bottom end of the enclosure means and providing a cover for the wick means.

14. The apparatus for collecting and testing a specimen of claim 12, wherein the enclosure means and the extendable carrier means are cylindrically shaped.

15. The apparatus for collecting and testing a specimen of claim 12, wherein the wick means comprises an absorbent foam rubber.

16. The apparatus for collecting and testing a specimen of claim 13, further comprising a seal adapted between the enclosure means and the means for sealing, preventing leakage when the means for sealing is affixed to the enclosure means.

17. The apparatus for collecting and testing a specimen of claim 12, wherein the means for extending and retracting is a knob rotatably coupled to the enclosure means and coupled to a threaded shaft, the threaded shaft passing through threads in the extendable carrier means.

18. The apparatus for collecting and testing a specimen of claim 17, whereas rotation of the knob in a first direction extends the extendable carrier means and the wick means beyond the bottom end of the enclosure means and rotation of the knob in an opposite direction retracts the extendable carrier means and the wick means into the enclosure means.

19. An apparatus for collecting and testing a specimen, the apparatus comprising:

an enclosure means having a top surface, a bottom edge and at least three sides;

an extendable carrier means adapted within the enclosure means;

a wick means affixed to a bottom end of the extendable carrier means for accepting the specimen;

a means for extending and retracting the extendable carrier; and

a plurality of test membranes, each of the plurality of test membranes affixed to one of the at least three sides and the plurality of test membranes visible through the enclosure means and the plurality of test membranes interfaced with the wick means,

whereby the wick means is coupled to the plurality of test membranes so as to transfer the specimen from the wick means to the plurality of test membranes.

20. The apparatus for collecting and testing a specimen of claim 19, further comprising:

a means for sealing the enclosure means removably affixed to the bottom edge of the enclosure means and providing a cover for the wick means.

21. The apparatus for collecting and testing a specimen of claim 19, wherein the enclosure means and the extendable carrier means are cylindrically shaped.

22. The apparatus for collecting and testing a specimen of claim 19, wherein the enclosure means and the extendable carrier means are pentagonally shaped.

23. The apparatus for collecting and testing a specimen of claim 19, wherein the enclosure means and the extendable carrier means are hexagonally shaped.

24. The apparatus for collecting and testing a specimen of claim 19, wherein the enclosure means and the extendable carrier means are octagonally shaped.

25. The apparatus for collecting and testing a specimen of claim 19, wherein the wick means comprises an absorbent foam rubber.

26. The apparatus for collecting and testing a specimen of claim 20, further comprising a seal adapted between the bottom edge of the enclosure means and the means for sealing, preventing leakage when the means for sealing is affixed to the enclosure means.

27. The apparatus for collecting and testing a specimen of claim 19, wherein the means for extending and retracting is a knob rotatably coupled to the top surface of the enclosure means, the knob is coupled to a threaded shaft, the threaded shaft passing through threads in the extendable carrier means.

28. The apparatus for collecting and testing a specimen of claim 27, whereas rotation of the knob in a first direction extends the extendable carrier means and the wick means beyond the bottom end of the enclosure means and rotation of the knob in an opposite direction retracts the extendable carrier means and the wick means into the enclosure means.