IP Library Granted Patent US 11,291,746
Granted Patent B2
US 11,291,746 · App. 16/460,911 · Granted Apr 5, 2022

Wound dressing containing honey and collagen

Inventors: Debashish Chakravarthy (Vernon Hills, IL); Andrew J. Ford (Libertyville, IL)
Assignee: Medline Industries, LP
A61L15/44A61L15/18A61L15/325A61L15/40A61L2300/404A61L2300/41A61L2300/412A61L2300/434
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Quick Facts
Patent No.
US 11,291,746
App. No.
16/460,911
Granted
Apr 5, 2022
Kind
B2
Abstract

A wound dressing makes use of a saccharide, such as Manuka honey, in combination with collagen in order to suppress the efficacy of matrix metalloproteinases enzymes (“MMPs”) present in chronic wounds. The mixture is applied to an absorbent surface that is designed to absorb the mixed saccharide only partially.

Claims (33)

1. A dressing for application to a wound comprising:

a wound contacting layer comprising:

a first layer consisting of honey having a first viscosity and a supplemental material; and

a second layer comprising the honey, the supplemental material, and a powdered collagen;

wherein the honey, the supplemental material, and the powdered collagen form a mixture in the wound contacting second layer having a viscosity that is greater than the viscosity of the honey.

2. The dressing of claim 1 , wherein the supplemental material is cane sugar.

3. The dressing of claim 2 , wherein the cane sugar comprises crystalline sugar.

4. The dressing of claim 2 , wherein the cane sugar comprises powdered sugar.

5. The dressing of claim 2 , wherein the cane sugar comprises a sugar syrup.

6. The dressing of claim 1 , wherein the supplemental material has antimicrobial properties.

7. The dressing of claim 6 , wherein the supplemental material comprises silver.

8. The dressing of claim 1 , wherein the wound contact second layer comprises between 10% and 45% by weight of honey.

9. The dressing of claim 1 , wherein the wound contacting second layer comprises greater than 90% by weight of honey.

10. The dressing of claim 9 , wherein the wound contacting second layer comprises less than 10% by weight of collagen.

11. The dressing of claim 1 , wherein the wound contacting second layer comprises between 40% and 80% by weight of the supplemental material.

12. The dressing of claim 1 , wherein the wound contacting second layer comprises between 10% and 50% by weight of collagen.

13. A dressing for application to a wound comprising:

a wound contacting layer comprising honey having a first viscosity and powdered collagen;

a film layer;

an absorbent layer; and

a cover layer;

wherein the wound contacting layer is applied to the film layer, and

wherein the honey and powdered collagen form a mixture in the wound contacting layer having a viscosity that is greater than the viscosity of the honey.

14. The dressing of claim 13 , wherein the wound contacting layer comprises:

a first layer adjacent to the wound surface, the first layer comprising honey and cane sugar; and

a second layer comprising honey, cane sugar and powdered collagen.

15. The dressing of claim 14 , wherein the first layer of the wound contacting layer consists essentially of honey and cane sugar.

16. The dressing of claim 13 , wherein the wound contacting layer comprises:

a first layer adjacent to the wound surface, the first layer comprising honey and a supplemental material; and

a second layer comprising honey, the supplemental material and powdered collagen.

17. The dressing of claim 13 , wherein the wound contacting layer comprises:

a first layer adjacent to the wound surface, the first layer comprising honey and powdered collagen; and

a second layer comprising honey, a supplemental material and powdered collagen.

Assignments (7)
PATENT SECURITY AGREEMENT Recorded May 28, 2026
From: MEDLINE INDUSTRIES, LP
To: WILMINGTON TRUST, NATIONAL ASSOCIATION, AS NOTES COLLATERAL AGENT
Reel/Frame 075643/0462 →
PATENT SECURITY AGREEMENT Recorded Jun 20, 2025
From: MEDLINE INDUSTRIES, LP
To: WILMINGTON TRUST, NATIONAL ASSOCIATION, AS NOTES COLLATERAL AGENT
Reel/Frame 071672/0100 →
CORRECTIVE ASSIGNMENT TO CORRECT THE THE APPLICATION NUMBER PREVIOUSLY RECORDED AT REEL: 057787 FRAME: 0814. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Recorded Mar 1, 2022
From: MEDLINE INDUSTRIES, INC.
To: MEDLINE INDUSTRIES, LP
Reel/Frame 059277/0151 →
SECURITY INTEREST Recorded Oct 21, 2021
From: MEDLINE INDUSTRIES, LP
To: BANK OF AMERICA, N.A.
Reel/Frame 058040/0001 →
SECURITY INTEREST Recorded Oct 21, 2021
From: MEDLINE INDUSTRIES, LP
To: WILMINGTON TRUST, NATIONAL ASSOCIATION
Reel/Frame 057927/0091 →
CHANGE OF NAME Recorded Oct 12, 2021
From: MEDLINE INDUSTRIES, INC.
To: MEDLINE INDUSTRIES, LP
Reel/Frame 057787/0814 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 2, 2019
From: CHAKRAVARTHY, DEBASHIS; FORD, ANDREW J
To: MEDLINE INDUSTRIES, INC.
Reel/Frame 049658/0897 →