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 and an angular wall;

an annular cover extending over the annular body defining a gap between the annular body and the annular cover, the cover being secured to the body;

at least one of a plurality of apertures radially provided in the angular wall in the annular body, the angular wall being concentric around the annular body; and

a keying mechanism mating with the at least one of a plurality of apertures to control an angular rotation of the cassette.

2. The cassette recited in claim 1 , wherein the annular body further having an inner wall and an outer wall.

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

4. The cassette recited in claim 2 , wherein the angular wall ascends between the inner wall and the outer wall.

5. The cassette recited in claim 2 , wherein the annular body further includes a lower wall.

6. The cassette recited in claim 5 , wherein the angular wall is disposed between the inner wall and the lower wall.

7. The cassette recited in claim 5 , wherein the angular wall is disposed between the outer wall and the lower wall.

8. The cassette recited in claim 7 , wherein the plurality of apertures extends into the lower wall.

9. The cassette recited in claim 7 , wherein the plurality of apertures extends into the inner wall and the lower wall.

10. The cassette recited in claim 7 , wherein the plurality of apertures extends into the outer wall and the lower wall.

11. The cassette recited in claim 2 , wherein the plurality of apertures extends into the outer wall.

12. The cassette recited in claim 2 , wherein the plurality of apertures extends into the inner wall.

13. 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 and an outer wall;

an annular cover extending over the annular body defining a gap between the annular body and the annular cover ;

an inter-engagement mechanism on the annular body and on the annular cover that cooperate to secure the cover to the body;

at least one of a plurality of apertures radially provided in the angular wall; and

a keying mechanism mating with the at least one of a plurality of apertures to control an angular rotation of the cassette.

14. The cassette recited in claim 13 , wherein the annular body further includes a lower wall.

15. The cassette recited in claim 14 , wherein the angular wall is disposed between the inner wall and the lower wall.

16. The cassette recited in claim 14 , wherein the apertures extend into at least one of the inner wall and the lower wall.

17. 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, a bottom wall and an outer wall;

an annular cover extending over the annular body defining a gap between the annular body and the annular cover;

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

a plurality of apertures provided in the angular wall; and

a keying mechanism mating with the plurality of apertures to control the angular rotation of the cassette.

18. The cassette recited in claim 17 , wherein the plurality of apertures extends into the lower wall.

19. The cassette recited in claim 17 , wherein the plurality of apertures extends into the inner wall.

20. The cassette recited in claim 17 , wherein the plurality of apertures are radially provided in the angular wall.