Cylindrical collapsible container

1. A container for medical use forming a closed compartment for carrying a pressurized liquid, comprising:

a side wall member formed by a sheet material and forming a side wall of said closed compartment, said side wall member comprising oppositely arranged first and second open ends;

a rigid bottom portion arranged at said first open end of said side wall member such that said bottom portion seals said first open end of said side wall member, thereby forming a bottom of said closed compartment;

a rigid top portion arranged at said second open end of said side wall member such that said top portion seals said second open end of said side wall member, said top portion forming the top of said container and having a through hole formed therein;

a lid arranged to cover and seal a filling hole;

a pressure valve arranged and configured for establishing a predetermined maximum pressure inside said container; and

a flexible tube arranged inside said closed compartment, said flexible tube having a first end portion and a second end portion;

wherein, said first end portion of the flexible tube being provided with an opening towards said compartment and said second end portion of the flexible tube

connected to said top portion and in fluid communication with the through hole in the rigid top portion;

wherein said side wall member is flexible such that said container is reversibly foldable and unfoldable, thereby being arrangeable in a compact state, in which the rigid top and bottom portions are arranged relatively closer to each other, and in an expanded state, in which the rigid top and bottom portions are arranged relatively further apart, respectively.

2. The container according to claim 1 , wherein a second through going hole is arranged such that, when in use, liquid may pass through said tube and said first hole through a sealed connection between said tube and said top portion, and such that if pressurized gas is supplied through said second hole, when in use, liquid from inside said compartment will be provided through said tube and through said first hole.

3. The container according to claim 1 , wherein the first end portion of the flexible tube is connected to the bottom portion of the container.

4. The container according to claim 1 , wherein said flexible tube is twisted, to curl up when said container is brought to said compact state.

5. The container according to claim 1 , further comprising at least one locking element to maintain said container in said compact state.

6. The container according to claim 1 , further comprising at least one handle in said top portion and/or in said bottom portion.

7. The container according to claim 1 , wherein in said compact state, said top and bottom portions are in contact with each other.

8. The container according to claim 1 , wherein in said compact state, said top and bottom portions are rotated relative to each other compared to when in said expanded state.

9. The container according to claim 1 , wherein in said compact state, said container is less than ½ the height of the expanded state.

10. The container according to claim 1 , wherein in said compact state, said container is less than ¼ the height of the expanded state.

11. The container according to claim 1 , wherein in said compact state, said container is less than ⅕ the height of the expanded state.

12. The container according to claim 1 , wherein said side wall member is cylindrical in the expanded state.

13. The container according to claim 1 , wherein said container is adapted for use in an irrigation system.

14. The container according to claim 1 , wherein said tube is attached to said bottom portion via a snap-in connection.

15. The container according to claim 1 , wherein said container has a capacity of less than 5 liters.

16. The container according to claim 1 , wherein said side wall member is provided with markings indicating a volume scale.

17. The container according to claim 1 , wherein said side wall member is provided with a temperature sensor.

18. An irrigation system, comprising a container in accordance with claim 1 .

19. The irrigation system of claim 17 further comprising a probe and a control unit.

20. The irrigation system of claim 18 , wherein the irrigation system is a rectal irrigation system.

21. The irrigation system of claim 20 , wherein the irrigation system is a rectal irrigation system.