Nozzle for an enema device, a packaging including the nozzle, and an enema device comprising the nozzle

1. A funnel-shaped enema nozzle ( 1 ) comprising a flared proximal part ( 2 ) that tapers into a tubular distal part ( 3 ) that has an outlet opening ( 5 ) at a distal end ( 6 ), at least a part of an exterior annular wall of the tubular distal part ( 3 ) has a hydrophilic coating ( 4 ), wherein the tubular distal part ( 3 ) has an elastic or flexible tubular coupling piece ( 7 ) with an inlet opening ( 8 ) at a proximal opposite end ( 9 ), which tubular coupling piece ( 7 ) is surrounded by the flared proximal part ( 2 ) and does not protrude outside the flared proximal part ( 2 ), and wherein an exterior diameter (D) of the flared proximal part ( 2 ) increases continuously towards the proximal opposite end ( 9 ).

2. The funnel-shaped enema nozzle ( 1 ) according to claim 1 , wherein the entire exterior wall ( 3 a ) of the tubular distal part ( 3 ) has a hydrophilic coating ( 4 ).

3. The funnel-shaped enema nozzle ( 1 ) according to claim 1 , wherein at least a part of the exterior wall ( 2 a ) of the flared proximal part ( 2 ) has a hydraulic coating ( 4 ).

4. The funnel-shaped enema nozzle ( 1 ) according to claim 1 , wherein an annular edge ( 12 ) of the outlet opening ( 5 ) of the tubular distal part ( 3 ) is rounded.

5. The funnel-shaped enema nozzle ( 1 ) according to claim 1 , wherein at least a part of an exterior wall ( 2 a ; 3 a ) of the funnel-shaped enema nozzle ( 1 ) is uneven.

6. The funnel-shaped enema nozzle ( 1 ) according to claim 5 , wherein the uneven part of the exterior wall ( 2 a ; 3 a ) of the funnel-shaped enema nozzle ( 1 ) is the exterior wall ( 2 a ) of the flared proximal part ( 2 ) of the funnel-shaped enema nozzle ( 1 ).

7. The funnel-shaped enema nozzle ( 1 ) according to claim 5 , wherein a surface roughness of the uneven part of the funnel-shaped enema nozzle ( 1 ) is between 2.0-3.0 Ra or is 2.8 Ra.

8. The funnel-shaped enema nozzle ( 1 ) according to claim 5 , wherein the funnel-shaped enema nozzle ( 1 ) is manufactured by molding in a mold having a mold cavity part with a surface corresponding to the uneven part of the nozzle ( 1 ), which surface is uneven by abrasive blasting.

9. The funnel-shaped enema nozzle ( 1 ) according to claim 1 , wherein at least a part of the exterior wall ( 3 a ) of the tubular distal part ( 3 ) is smooth.

10. The funnel-shaped enema nozzle ( 1 ) according to claim 9 , wherein the funnel-shaped enema nozzle is manufactured by molding in mold having a mold cavity part with a surface corresponding to the smooth part of the nozzle ( 1 ), which surface is smooth by polishing.

11. The funnel-shaped enema nozzle ( 1 ) according to claim 9 , wherein the smooth part of the exterior wall ( 3 a ) of the tubular distal part ( 3 ) has a surface roughness which is either below 0.5 Ra, below 0.3 Ra, or below 0.1 Ra, or Ra is substantially 0.

12. The funnel-shaped enema nozzle ( 1 ) according to claim 1 , wherein the exterior diameter (D) of the flared proximal part ( 2 ) is either about at least 50% larger than the exterior diameter (d) of the tubular distal part ( 3 ) at the outlet opening ( 5 ), at least 60% larger than the exterior diameter (d) of the tubular distal part ( 3 ) at the outlet opening ( 5 ), or about at least 70% larger than the exterior diameter (d) of the tubular distal part ( 3 ) at the outlet opening ( 5 ).

13. The funnel-shaped enema nozzle ( 1 ) according claim 1 , wherein an axial length (L 1 ) of the funnel-shaped enema nozzle ( 1 ) is either between 1.2 and 1.5 times larger than the exterior diameter (D) of the flared proximal part ( 2 ), or is 1.25 times larger.

14. The funnel-shaped enema nozzle ( 1 ) according to claim 1 , wherein the axial length (L 1 ) of the funnel-shaped enema nozzle ( 1 ) is between 45-95 mm.

15. The funnel-shaped enema nozzle ( 1 ) according to claim 1 , wherein an exterior diameter (d 1 ) of the tubular coupling piece ( 7 ) at the transition of the tubular distal part ( 3 ) into the flared proximal part ( 2 ) is larger than the exterior diameter (d 2 ) of the tubular coupling piece ( 7 ) at the inlet opening ( 8 ).

16. The funnel-shaped enema nozzle ( 1 ) according to claim 1 , wherein the tubular coupling piece ( 7 ) is a plastic tube inserted at least a distance into the tubular distal part ( 3 ) via the transition opening between the tubular distal part ( 3 ) and the flared proximal part ( 2 ).

17. The funnel-shaped enema nozzle ( 1 ) according to claim 1 , wherein the hydrophilic coating ( 4 ) is a polyvinylpyrrolidone coating.

18. A packaging ( 13 ; 26 ) including the funnel-shaped enema nozzle ( 1 ) according to claim 1 and a liquid ( 16 ) in liquid contact with the hydrophilic coating ( 4 ).

19. The packaging ( 13 ; 26 ) according to claim 18 , wherein the packaging ( 13 ; 26 ) is made of a material that either prevents evaporation of more than 10% of the liquid ( 16 ) from the packaging ( 13 ; 26 ) during a year of storage, more than 5% of the liquid ( 16 ) from the packaging ( 13 ; 26 ) during a year of storage, or more than 1% of the liquid ( 16 ) from the packaging ( 13 ; 26 ) during a year of storage, or no liquid ( 16 ) evaporates from the packaging ( 13 ; 26 ) during a year of storage.

20. The packaging ( 13 ; 26 ) according to claim 18 , wherein the packaging ( 13 ; 26 ) is made of a material that is smell-tight or bacteria impermeable.

21. The packaging ( 13 ) according to claim 18 , wherein the packaging ( 13 ; 26 ) comprises a lid ( 14 ).

22. A nozzle assembly comprising the funnel-shaped enema nozzle ( 1 ) according to claim 1 , a packaging ( 13 ; 26 ) adapted for containing the funnel-shaped enema nozzle ( 1 ), and a liquid ( 16 ) contained inside the packaging ( 13 ; 26 ) and being in liquid contact with the hydrophilic coating ( 4 ) of the funnel-shaped enema nozzle ( 1 ).

23. The nozzle assembly according to claim 22 , wherein the packaging ( 13 ; 26 ) comprises a lid ( 14 ).

24. An enema device comprising a flared proximal part ( 2 ) that tapers into a tubular distal part ( 3 ) that has an outlet opening ( 5 ) at a distal end ( 6 ), at least a part of an exterior annular wall of the tubular distal part ( 3 ) has a hydrophilic coating ( 4 ), wherein the tubular distal part ( 3 ) has an elastic or flexible tubular coupling piece ( 7 ) with an inlet opening ( 8 ) at a proximal opposite end ( 9 ), which tubular coupling piece ( 7 ) is surrounded by the flared proximal part ( 2 ) and does not protrude outside the flared proximal part ( 2 ), and wherein a diameter of the flared proximal part ( 2 ) increases continuously towards the proximal opposite end ( 9 ).