Cassette for dispensing pleated tubing

1. A cassette for use in dispensing a pleated tubing, comprising:

an annular body having a generally U shaped housing with a central cylindrical core, the annular body having an inner wall, an angular wall that is concentric and frustoconically flat all the way around the body, and an outer wall, wherein the angular wall extends from the inner wall;

an annular cover secured to the body, the annular cover comprising:

an outer wall;

a ledge that extends radially inward from the outer wall and over the annular body defining a gap between an inner edge of the ledge and the inner wall of the annular body,

wherein the outer wall extends slightly higher than the radially inward extending ledge to define a concentric lip; and

at least one aperture provided in the angular wall in the annular body.

2. The cassette recited in claim 1 , wherein the angular wall is disposed between the inner wall and the outer wall in the annular body.

3. The cassette recited in claim 1 , wherein the a angular wall descends between the inner wall and the outer wall.

4. The cassette recited in claim 1 , wherein the annular body further includes a lower wall, the angular wall is disposed between the inner wall and the lower wall.

5. The cassette recited in claim 4 , wherein the aperture extends into the lower wall.

6. A cassette for use in dispensing a pleated tubing, comprising:

an annular body having a generally U shaped housing with an open central cylindrical core, the annular body having an inner wall, an angular wall that is concentric and frustoconically flat all the way around the body, and an outer wall, wherein the angular wall extends from the inner wall;

an annular cover having an outer wall and a ledge extending radially inward from the outer wall and over the annular body defining a gap between an inner edge of the ledge and the inner wall of the annular body;

inter-engagement mechanism on the annular body and on opposite edges of the annular cover that cooperate to secure the cover to the body; and

at least one aperture provided in the angular wall.

7. The cassette recited in claim 6 , wherein the annular body further includes a lower wall, the angular wall is disposed between the inner wall and the lower wall.

8. The cassette recited in claim 6 , wherein the outer wall of the annular cover extends slightly higher than the radially inward extending top ledge to define a concentric lip within which another cassette can be secured while stacked on top of a portion of the top ledge of the annular cover.

9. A cassette for use in dispensing a pleated tubing, comprising:

an annular body having a generally U shaped housing with a central cylindrical core, the annular body having an inner wall, am angular wall that is concentric and frustoconically flat all the way around the body, a bottom wall that is horizontal and also concentrically flat and an outer wall, wherein the angular wall extends from the inner wall;

an annular cover having an outer wall and a top ledge extending inward over the annular body, the top ledge extends radially inward from the outer wall to a location defining a gap between tin inner edge of the top ledge and the inner wall;

inter-engagement mechanism on the annular body and on opposite edges of the annular cover to secure the cover to the body; and

at least one aperture in provided in the angular wall.

10. The cassette recited in claim 9 , wherein the aperture extends into the bottom wall.

11. The cassette recited in claim 9 , wherein the outer wall extends above the top ledge to define a rim adapted to secure a lower end of an annular body of another cassette stacked thereon.