Wound care device

• US 20050143694A1
• Filed: 02/14/2003
• Published: 06/30/2005
• Est. Priority Date: 02/15/2002
• Status: Abandoned Application

• Current Assignee: Coloplast A/S
• Original Assignee: Coloplast A/S
• Inventors: Larsen, Truels Sterm, Schmidt, Nicolai Michael
• Application Number:
  US10/503,583
• Publication Number:
  US 20050143694A1
• Time in Patent Office: Days
• US Class Current: 604/304
• CPC Class Codes: A61L 15/26 Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof A61L15/225 takes precedence
• CPC Class Codes: A61L 15/425 Porous materials, e.g. foams or sponges
• CPC Class Codes: C08L 75/04 Polyurethanes

Abstract

A wound care device comprising foam composition wherein the retention factor Rv=R/Δ?V of the foam is at least 0.05 wherein R is the retention capacity (g/g) and Δ?V is the expansion of volume (% v/v) of the foam when wetted. A wound care device comprising foam with a high retention and low expansion of volume is achieved, which is desired in the treatment of wounds, especially chronic wounds.

Claims

1. A wound care device comprising foam composition wherein the retention factor R_v=R/Δ

V of the foam is at least 0.05 wherein R is the retention capacity (g/g) and Δ

V is the expansion of volume (% v/v) of the foam when wetted.

2. A device according to claim 1 characterised in that the retention factor R_v of the foam is at least 0.07.

3. A device according to claim 1 characterised in that the foam has incorporated super-absorbent particles or fibres.

4. A device according to claim 1 characterised in that the device is a wound dressing.

5. A device according to claim 1 characterised in that foam is polyurethane foam.

6. A device according to claim 5 characterised in that the foam comprises poly-ether and has a content of ethylene oxide of less than 50% of the total content of polyether.

7. A device according to claim 5 characterised in that the foam has a content of ethylene oxide is less than 40% of the total poly-ether content.

8. A device according to claim 1 characterised in that the foam has an initial absorption time is less than 10 seconds.

9. A device according to claim 1 characterised in that the foam comprises EO/PE siloxanes.

10. A device according to claim 1 characterised in that the device comprises one or more active ingredients.