IP Library › Granted Patent US 11,103,621
Granted Patent B2
US 11,103,621 · App. 15/882,916 · Granted Aug 31, 2021

Discharge solidifier and malodour control

Inventor: Stewart Lee (Lancashire, GB)
Assignee: CONVATEC LTD
A61L28/0092A61F5/441A61L28/0003A61L28/0011A61F5/445
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Quick Facts
Patent No.
US 11,103,621
App. No.
15/882,916
Granted
Aug 31, 2021
Kind
B2
Abstract

An ostomy bag insert ( 104 ) comprising a polyacrylate superabsorbent ( 300 ) and a powdered zeolite ( 301 ). The ostomy bag insert is configured to absorb fluids excreted by the body and to control odours resultant from the excreted matter within the ostomy bag ( 100 ). The present zeolite exhibits enhanced odour control.

Claims (40)

1. A composition comprising: a polyacrylate superabsorbent an odor controlling agent and a zeolite blend; wherein the zeolite blend comprises a hydrophilic zeolite and a hydrophobic zeolite; and wherein the polyacrylate superabsorbent comprises sodium polyacrylate or calcium polyacrylate.

2. The composition of claim 1 , wherein the zeolite blend is microporous.

3. The composition of claim 1 , wherein the zeolite blend is natural or synthetic.

4. The composition of claim 1 , wherein the hydrophobic zeolite comprises an ammonium zeolite.

5. The composition of claim 1 , wherein the hydrophilic zeolite comprises sodium aluminosilicate.

6. A composition comprising:

a polyacrylate superabsorbent, an odor controlling agent, and a zeolite blend;

wherein the zeolite blend comprises a hydrophilic zeolite and a hydrophobic zeolite; and

wherein the zeolite blend comprises a naturally sourced zeolite selected from analcime, chabazite, clinoptilolite, heulandite, natrolite, phillipsite, and stilbite.

7. The composition of claim 1 , wherein the zeolite blend is a powder.

8. The composition of claim 1 , wherein the superabsorbent is coated with the zeolite blend.

9. The composition of claim 8 , wherein the zeolite blend is bound to the superabsorbent by electrostatic forces.

10. A composition comprising:

a polyacrylate superabsorbent, an odor controlling agent, and a zeolite blend;

wherein the zeolite blend comprises a hydrophilic zeolite and a hydrophobic zeolite; and

wherein the zeolite blend comprises a particle size equal to or less than 0.15 mm.

11. The composition of claim 1 , wherein the superabsorbent comprises a polymer of cross linked sodium polyacrylate or calcium polyacrylate.

12. The composition of claim 1 , wherein the superabsorbent comprises fibers.

13. The composition of claim 1 , wherein the superabsorbent comprises a starch or an alkaline metal polyacrylate.

14. The composition of claim 1 , wherein the superabsorbent comprises a granular configuration.

15. The composition of claim 14 , wherein the granular configuration of the polyacrylate superabsorbent is greater in size than that of the zeolite blend.

16. The composition of claim 1 , wherein the odor controlling agent comprises hydrogen peroxide, bacterial growth inhibitor, sodium nitrate, or benzyl alkonium chloride.

17. The composition of claim 1 , further comprising an odor counteractant, disinfectant, or a preservative.

18. The composition of claim 17 , wherein the odor counteractant comprises a volcanic clay or activated carbon.

19. A composition comprising:

a polyacrylate superabsorbent, an odor controlling agent, and a zeolite blend;

wherein the zeolite blend comprises a hydrophilic zeolite and a hydrophobic zeolite;

wherein the composition further comprises activated carbon; and

wherein a weight % ratio of the activated carbon to zeolite blend is in the range of 0.01:1 to 0.05:1.

20. The composition of 18 , wherein the activated carbon comprises coconut shell char.

21. The composition of claim 18 , wherein the activated carbon comprises a surface area of substantially 1250 m 2 /g.

22. The composition of claim 18 , wherein the activated carbon is bound to the superabsorbent by electrostatic forces.

23. A composition comprising:

a polyacrylate superabsorbent, an odor controlling agent, and a zeolite blend;

wherein the zeolite blend comprises a hydrophilic zeolite and a hydrophobic zeolite; and

wherein the composition further comprises a metal impregnated activated charcoal.

24. The composition of claim 1 , wherein the composition is housed within a water soluble film, a PVA film, a gel cap, a plastic straw or plastic wand, or a paper sachet.

25. The composition of claim 1 , wherein the composition is formed as a tablet or a pellet.

26. An insert adapted for malodor control in a device, wherein the insert comprises the composition of claim 1 .

27. The insert of claim 26 , wherein the device is an ostomy bag.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 12, 2021
From: LEE, STEWART
To: CONVATEC LTD
Reel/Frame 056825/0689 →
Priority Claims (1)
GB 1115160 · Sep 2, 2011 · national
Continuity (2)
Continuation 14347970
Related Publication 20180147325A1 · May 31, 2018