Vial system and method for processing liquid-based specimens

1. A method for processing particulate matter-containing liquid held in a vial,

the vial comprising:

a container having an opening at an upper end thereof;

an imperforate cover removably coupled to the container to close the opening; and

a processing assembly that is separate from the container and is coupled to the cover proximate an interface between the cover and the opening by a releasable coupling that allows the processing assembly to be removed from the container along with the cover while still coupled thereto, the releasable coupling comprising mating couplers in the form of closely fitting projections held together by a frictional retention force and respectively carried by the inside of the cover and an upper portion of the processing assembly such that the couplers disengage upon application of an external force to the vial that overcomes the retention force, whereby the processing assembly may be selectively detached inwardly from the cover while the cover is on the container so that the processing assembly remains in the container when the cover is subsequently removed;

the method comprising:

detaching the processing assembly from the cover while the cover is on the container;

removing the cover to expose the detached processing assembly in the container; and

manipulating the processing assembly so as to process the particulate matter-containing liquid in the container.

2. The method of claim 1 , wherein detaching the processing assembly comprises applying an external force to the closed vial.

3. The method of claim 2 , wherein detaching the processing assembly comprises applying the external force to the central portion of the cover to deflect the cover inwardly.

4. The method of claim 1 , the processing assembly comprising a dispersing element, wherein manipulating the processing assembly comprises moving the dispersing element to thereby disperse the particulate matter in the liquid.

5. The method of claim 4 , wherein moving the dispersing element comprises rotating the processing assembly to cause the dispersing element to stir the particulate matter-containing liquid.

6. The method of claim 4 , wherein moving the dispersing element comprises lifting the processing assembly slightly to insure clearance between the processing assembly and the container, and thereafter rotating the processing assembly to cause the dispersing element to stir the particulate matter-containing liquid.

7. The method of claim 5 , wherein the processing assembly further comprises (i) a particulate matter separation chamber at the upper portion thereof adapted to hold a filter assembly, and (ii) a tube communicating with the separation chamber and extending downwardly therefrom, and wherein manipulating the processing assembly further comprises placing a filter assembly in the separation chamber, sealing the separation chamber, and applying a vacuum to the separation chamber to draw the stirred particulate matter-containing liquid upwardly through the tube and into contact with the filter assembly so as to collect particulate matter on a surface of the filter assembly.

8. The method of claim 7 , further comprising removing the filter assembly from the separation chamber, and contacting the particulate matter collected on the filter assembly with a slide so as to transfer collected particulate matter to the slide.

9. A method for processing particulate matter-containing liquid held in a vial,

the vial comprising:

a container having an opening at its upper end, a central axis extending lengthwise of the container through the opening, and a wall surrounding the axis;

a cover removably coupled to the container to close the opening; and

a processing assembly separate from and wholly within the container and engageable by an external manipulator after the cover is removed, wherein a portion of the surrounding container wall below the opening loosely supports the processing assembly when it is not engaged by a manipulator such that an upper portion of the processing assembly is disposed near but not above the opening, the supporting portion of the container wall comprises at least three spaced inwardly extending supports on which the processing assembly rests, wherein the processing assembly comprises a particulate matter separation chamber at the upper portion thereof adapted to hold a filter assembly, a tube communicating with the separation chamber and extending downwardly therefrom, and a dispersing element carried by the tube, the upper portion of the processing assembly having a peripheral portion that lies close to the surrounding wall and rests on the supporting portion of the surrounding wall;

the method comprising:

detaching the processing assembly from the cover while the cover is on the container;

removing the cover to expose the detached processing assembly in the container; and

manipulating the processing assembly so as to process the particulate matter-containing liquid in the container.

10. The method of claim 9 , wherein detaching the processing assembly comprises applying an external force to the closed vial.

11. The method of claim 10 , wherein detaching the processing assembly comprises applying the external force to the central portion of the cover to deflect the cover inwardly.

12. The method of claim 9 , wherein manipulating the processing assembly comprises moving the dispersing element to thereby disperse the particulate matter in the liquid.

13. The method of claim 12 , wherein moving the dispersing element comprises rotating the processing assembly to cause the dispersing element to stir the particulate matter-containing liquid.

14. The method of claim 12 , wherein moving the dispersing element comprises lifting the processing assembly slightly to insure clearance between the processing assembly and the container, and thereafter rotating the processing assembly to cause the dispersing element to stir the particulate matter-containing liquid.

15. The method of claim 14 , wherein manipulating the processing assembly further comprises placing a filter assembly in the separation chamber, sealing the separation chamber, and applying a vacuum to the separation chamber to draw the stirred particulate matter-containing liquid upwardly through the tube and into contact with the filter assembly so as to collect particulate matter on a surface of the filter assembly.

16. The method of claim 15 , further comprising removing the filter assembly from the separation chamber, and contacting the particulate matter collected on the filter assembly with a slide so as to transfer collected particulate matter to the slide.

17. A method for processing particulate matter-containing liquid held in a vial,

the vial comprising:

a container having an opening at its upper end, a central axis extending lengthwise of the container through the opening, and a wall surrounding the axis;

a cover removably coupled to the container to close the opening; and

a processing assembly separate from and wholly within the container and engageable by an external manipulator after the cover is removed, wherein a portion of the surrounding container wall below the opening loosely supports the processing assembly when it is not engaged by a manipulator such that an upper portion of the processing assembly is disposed near but not above the opening, the processing assembly comprising a particulate matter separation chamber at the upper portion thereof adapted to hold a filter assembly, a tube communicating with the separation chamber and extending downwardly therefrom, and a dispersing element carried by the tube, the upper portion of the processing assembly having a peripheral portion that lies close to the surrounding wall and rests on the supporting portion of the surrounding wall, the processing assembly rotatable about the central axis so as to cause the dispersing element to stir the particulate matter-containing liquid and dimensioned to rotate freely in the container without contacting the surrounding wall when lifted slightly off the supporting portion of the surrounding wall by a rotating manipulator, wherein the supporting portion of the container wall comprises at least three spaced inwardly extending supports on which the peripheral portion of the processing assembly rests;

the method comprising:

detaching the processing assembly from the cover while the cover is on the container;

removing the cover to expose the detached processing assembly in the container; and

manipulating the processing assembly so as to process the particulate matter-containing liquid in the container.

18. The method of claim 17 , wherein detaching the processing assembly comprises applying an external force to the closed vial.

19. The method of claim 18 , wherein detaching the processing assembly comprises applying the external force to the central portion of the cover to deflect the cover inwardly.

20. The method of claim 17 , wherein manipulating the processing assembly comprises moving the dispersing element to thereby disperse the particulate matter in the liquid.

21. The method of claim 20 , wherein moving the dispersing element comprises rotating the processing assembly to cause the dispersing element to stir the particulate matter-containing liquid.

22. The method of claim 20 , wherein moving the dispersing element comprises lifting the processing assembly slightly to insure clearance between the processing assembly and the container, and thereafter rotating the processing assembly to cause the dispersing element to stir the particulate matter-containing liquid.

23. The method of claim 22 , wherein manipulating the processing assembly further comprises placing a filter assembly in the separation chamber, sealing the separation chamber, and applying a vacuum to the separation chamber to draw the stirred particulate matter-containing liquid upwardly through the tube and into contact with the filter assembly so as to collect particulate matter on a surface of the filter assembly.

24. The method of claim 23 , further comprising removing the filter assembly from the separation chamber, and contacting the particulate matter collected on the filter assembly with a slide so as to transfer collected particulate matter to the slide.