Conformable wound dressing and delivery system

Patent metadata

Field	Value
Publication number	US-11246761-B2
Application number	US-201716338791-A
Country	US
Kind code	B2
Filing date	Oct 5, 2017
Priority date	Oct 7, 2016
Publication date	Feb 15, 2022
Grant date	Feb 15, 2022

Abstract

Medical articles comprising a conformable wound dressing and delivery system. The wound dressing generally comprises a backing having a first major surface and a second major surface, an adhesive on the second major surface of the backing, and an absorbent pad proximate the second major surface of the backing. The backing extends beyond the perimeter of the absorbent pad, typically beyond the entire perimeter of the pad. The perimeter of the wound dressing has a concave feature that exhibits a local minimum. An axis extends from the local minimum to the perimeter of the wound dressing opposite the local minimum. The carrier overlies at least a portion of the backing on each side of the axis but does not overlie the backing along the axis. The wound dressing is especially designed for use on round or irregular shaped body parts, such as an elbow or heel.

First claim

What is claimed is:

1. A medical article comprising:
a wound dressing physically defined by a wound dressing perimeter having at least one concave feature that exhibits a local minimum, the wound dressing comprising:
a backing having a first major backing surface and a second major backing surface;
an adhesive on the second major backing surface;
an absorbent pad having a first major pad surface and a second major pad surface, the first major pad surface proximate the second major backing surface, the absorbent pad defined by an absorbent pad perimeter,
wherein the backing extends beyond the absorbent pad perimeter;

a symmetry axis extending from the local minimum to the wound dressing perimeter opposite the local minimum; and
a carrier comprising at least two carrier strands removably attached to the first major backing surface,
wherein at least a portion of the carrier extends to the wound dressing perimeter,
wherein the carrier overlies at least a portion of the absorbent pad, and
wherein the carrier overlies at least a portion of the backing on each side of the symmetry axis but does not overlie the backing along the symmetry axis.

2. The article of claim 1 , wherein 5-50% of the first major backing surface surrounding the symmetry axis is free of carrier.

3. The article of claim 1 , wherein the carrier on each side of the symmetry axis extends past the wound dressing perimeter of the to form a tab.

4. The article of claim 1 , wherein the carrier on each side of the symmetry axis extends past the wound dressing perimeter to form a tab, the tab on one side of the symmetry axis located opposite the tab on the other side of the symmetry axis, both tabs extending in a direction perpendicular to the symmetry axis.

5. The article of claim 1 , the wound dressing further comprising a second concave feature having a second local minimum, wherein the second concave feature is located opposite the first concave feature, and the symmetry axis extends across the wound dressing from the first local minimum to the second local minimum.

6. The article of claim 5 , wherein 5-50% of the first major backing surface surrounding the symmetry axis is free of carrier.

7. The article of claim 5 , wherein the carrier on each side of the symmetry axis extends past the wound dressing perimeter to form a pair of tabs, wherein one tab is located opposite the other tab, and each tab extends in a direction parallel to the symmetry axis.

8. The article of claim 5 , the wound dressing further comprising a third concave feature having a third local minimum and a fourth concave feature having a fourth local minimum, wherein the third concave feature is located opposite the fourth concave feature and a symmetry axis extends across the wound dressing from the third local minimum to the fourth local minimum, the symmetry axes being substantially perpendicular to one another, and wherein the carrier overlies at least a portion of the backing in each quadrant bordered by the symmetry axes but does not overlie the backing along either of the symmetry axes.

9. The article of claim 8 , wherein 5-50% of the first major backing surface surrounding the symmetry axes are free of carrier.

10. The article of claim 8 , wherein the carrier in each of two opposite quadrants extends past the wound dressing perimeter to form a tab, the tab in one quadrant located opposite the tab in the other quadrant.

11. The article of claim 1 , the wound dressing further comprising a border defined by a portion of the backing that extends beyond the absorbent pad, and the carrier overlies 5-40% of the border.

12. The article of claim 1 , the wound dressing further comprising a border defined by a portion of the backing that extends beyond the absorbent pad, and the carrier overlies 5-25% of the border.

13. The article of claim 1 , the portion of the carrier that overlies the absorbent pad comprising a bond block on a surface facing the backing to prevent attachment of the portion of the carrier to the backing and facilitate removal of the carrier by a user.

14. The article of claim 1 , the carrier further comprising a precut path so that the carrier can be removed in smaller segments.

15. The article of claim 1 , further comprising a low adhesion coating on the first major backing surface, such that at least a portion of the low adhesion coating is sandwiched between the carrier and the first major backing surface.

16. The article of claim 1 , the wound dressing further comprising a facing layer having a first major facing surface and a second major facing surface, the first major facing surface proximate the second major facing surface of at least one of the backing, absorbent pad and combinations thereof.

17. The article of claim 16 , wherein the facing layer is contiguous with the backing.

18. The article of claim 16 , wherein the facing layer is perforated.

Assignees

• 3M Innovative Properties Co

Inventors

• Holm David R
• Jacobson Richard L
• Lundquist Kevin G
• Sieracki James M

Classifications

• A61F13/0236

  characterised by the application/handling support layer · CPC title

• A61F2013/00608

  with reinforcing layers · CPC title

• A61F13/101

  for the elbow, e.g. decubitus ulcer bandages (A61F13/107 takes precedence) · CPC title

• A61F13/064

  for feet (incorporating non-textile reinforcing elements, e.g. springs or stays A61F5/0111; corn-pads, corn-rings A61F13/063) · CPC title

• A61F13/00085

  having means for facilitating the application on the skin, e.g. single hand handling facilities (A61F13/0259 takes precedence; bandage applicators separate from the bandage or the packaging A61F15/005) · CPC title