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A device for collecting spinal fluid during a lumbar puncture or other medical procedure includes: a) an upper, generally cup-shaped portion including an open top, an upper cup side wall, an upper cup base plate at a lower end of the upper cup side wall, and a drain hole in the upper cup base plate;

A device for collecting spinal fluid during a lumbar puncture or other medical procedure includes: a) an upper, generally cup-shaped portion including an open top, an upper cup side wall, an upper cup base plate at a lower end of the upper cup side wall, and a drain hole in the upper cup base plate; b) a lower, generally cup-shaped portion including an open top, a lower cup side wall, and a lower cup base plate at a lower end of the lower cup side wall, the lower cup base plate including a plurality of generally circular openings; wherein the upper, generally cup-shaped portion is removably insertable in and rotatable in the lower, generally cup-shaped portion, and the upper, generally cup-shaped portion includes a rotation mechanism for rotating the upper, generally cup-shaped portion in the lower cup-shaped portion.

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What is claimed is: 1. A device for collecting spinal fluid during a medical procedure, the collection device comprising: a) an upper, generally cup-shaped portion comprising an open top, an upper cup side wall, an upper cup base plate at a lower end of the upper cup side wall, and a drain hole in

What is claimed is: 1. A device for collecting spinal fluid during a medical procedure, the collection device comprising: a) an upper, generally cup-shaped portion comprising an open top, an upper cup side wall, an upper cup base plate at a lower end of the upper cup side wall, and a drain hole in the upper cup base plate; b) a lower, generally cup-shaped portion comprising an open top, a lower cup side wall, and a lower cup base plate at a lower end of the lower cup side wall, the lower cup base plate comprising a plurality of generally circular openings; wherein the upper, generally cup-shaped portion is removably insertable in and rotatable in the lower, generally cup-shaped portion, and the upper, generally cup-shaped portion comprises a rotation mechanism for rotating the upper, generally cup-shaped portion in the lower cup-shaped portion; and wherein the lower cup base plate openings are threaded for accommodating a correspondingly threaded end of a test tube. 2. The device according to claim 1, wherein the upper cup side wall is substantially cylindrical in shape, the lower cup side wall is substantially cylindrical in shape. 3. The device according to claim 2, wherein a diameter of the upper cup side wall is less than a diameter of the lower cup side wall, and the upper cup base plate is generally circular in shape and smaller than the lower cup base plate, which is also generally circular in shape. 4. The device according to claim 2, wherein the open top of the upper, generally cup-shaped portion is surrounded by a generally circular upper cup lip. 5. The device according to claim 4, wherein the open top of the lower, generally cup-shaped portion is surrounded by a generally circular lower cup lip. 6. The device according to claim 1, wherein the upper, generally cup-shaped portion and the lower, generally cup-shaped portion are each one-piece, and made of a transparent or translucent plastic material. 7. The device according to claim 1, wherein the lower part of the upper, generally cup-shaped portion has an outside diameter that is between about one and five millimeters less than an inside diameter of an upper part of the lower, generally cup-shaped portion. 8. The device according to claim 1, further comprising an enlarged thumb lever extending from the upper cup lip, and a stop that extends up from a lower cup lip of the lower, generally cup-shaped portion, the enlarged thumb lever comprising an extended lower section; wherein, when the extended lower section of the enlarged thumb lever is in contact with the stop, the drain opening is closed off from the test tubes and the upper cup portion is no longer rotatable. 9. The device according to claim 1, wherein a bottom surface of the upper cup lip rests on an upper surface of a lower cup lip of the lower, generally cup-shaped portion when the upper, generally cup-shaped portion is in the lower, generally cup-shaped portion. 10. The device according to claim 9, wherein the rotation mechanism comprises a thumb lever extending from the upper cup lip, a protrusion under the upper cup lip at the base of the thumb lever, and a plurality of spaced apart slots in the lower cup lip, each of the slots corresponding to a test tube position; wherein, when the thumb lever is pushed and the protrusion clicks into one of the slots, rotation of the upper, generally cup-shaped portion is temporarily halted. 11. A device for collecting spinal fluid during a medical procedure, the collection device comprising: a) an upper, generally cup-shaped portion comprising an open top, an upper cup side wall, an upper cup base plate at a lower end of the upper cup side wall, and a drain hole in the upper cup base plate; b) a lower, generally cup-shaped portion comprising an open top, a lower cup side wall, and a lower cup base plate at a lower end of the lower cup side wall, the lower cup base plate comprising a plurality of generally circular openings; wherein the upper, generally cup-shaped portion is removably insertable in and rotatable in the lower, generally cup-shaped portion, and the upper, generally cup-shaped portion comprises a rotation mechanism for rotating the upper, generally cup-shaped portion in the lower cup-shaped portion; and wherein the rotation mechanism comprises a thumb lever extending from an upper cup lip of the upper, generally cup-shaped portion. 12. The device according to claim 11, wherein the rotation mechanism further comprises a plurality of vertically oriented indentations in the upper cup side wall, and a like number of corresponding, vertically oriented ridges in the lower cup side wall. 13. The device according to claim 11, wherein the thumb lever comprises a gripping surface. 14. The device according to claim 11, wherein the generally circular openings are threaded for accommodating a correspondingly threaded end of a test tube. 15. The device according to claim 11, wherein the drain hole is in a mid section of the upper cup base plate, and is funnel-shaped. 16. The device according to claim 11, wherein each of the lower cup base plate openings comprises a female snap-in part that corresponds to a male snap-in part on a test tube. 17. The device according to claim 16, wherein the female snap-in part is a generally circular ring. 18. The device according to claim 16, wherein the female snap-in part is generally triangular in shape. 19. The device according to claim 11, wherein an upper face of the upper cup base plate is sloped toward the drain hole.