Ostomy appliance with a release liner having a predefined folding line

• US 9,549,840 B2
• Filed: 12/15/2009
• Issued: 01/24/2017
• Est. Priority Date: 12/18/2008
• Status: Active Grant

• Current Assignee: Coloplast A/S
• Original Assignee: Coloplast A/S
• Inventors: Buus, Hasse
• Primary Examiner(s): Marcetich, Adam
• Assistant Examiner(s): Townsend, Guy K
• Application Number:
  US13/132,608
• Publication Number:
  US 20110245789A1
• Time in Patent Office: 2,597 Days
• Field of Search: 604/344, 602/58
• US Class Current: 1/1
• CPC Class Codes: A61F 5/443 having adhesive seals for securing to the body, e.g. of hydrocolloid type, e.g. gels, starches, karaya gums adhesives or sealing pads therefor A61L24/00
• CPC Class Codes: A61F 5/445 Colostomy, ileostomy or urethrostomy devices A61F5/441, A61F5/442, A61F5/443 take precedence

Abstract

An ostomy appliance for attachment to the stoma body comprising an adhesive wafer and a collecting pouch attachable to an adhesive wafer, the wafer comprises a backing layer and a skin-facing adhesive layer, wherein the adhesive skin-facing surface of the wafer is provided with a release liner covering the skin-facing surface of the adhesive layer, the release liner comprising at least a first part and a second part, the first and the second part being interconnected along a predefined folding line and wherein both the first and the second part of the release liner is in contact with the adhesive. The construction facilitates stepwise application.

Claims

1. An ostomy appliance for attachment to a stoma body comprising an adhesive wafer configured to be attached to a collection pouch, the adhesive wafer including a backing layer and a skin-facing adhesive layer, a skin-contacting surface of the skin-facing adhesive layer being provided with a one-piece release liner covering the skin-contacting surface of the skin-facing adhesive layer, the one-piece release liner having a first part inseparably connected to a second part by a predefined folding line between the first part and the second part, the predefined folding line having a depression, the first part and the second part each having a first designated thickness, and the predefined folding line having a second designated thickness that is less than the first designated thickness prior to the first part and the second part being situated to at least partially face each other, such that material of the one-piece release liner has a cut out in the depression extending partly through the release liner at and along the predefined folding line, configured to be provided prior to the first part and the second part being detached or removed from the skin-facing adhesive layer, such that the opposite side of first part and the second part from the skin-facing adhesive layer contacting surface are configured to at least partially face each other upon the detachment or removal, the one-piece release liner configured to be folded along the predefined folding line at the cut out in the depression and detached or removed as a single sheet prior to application of the adhesive wafer to the skin around the stoma body via the skin-contacting surface of the skin-facing adhesive layer, an entire surface of the skin-contacting surface of the skin-facing adhesive layer configured to be in direct contact with the one-piece release liner prior to said detachment or removal.

2. The ostomy appliance according to claim 1, wherein an adhesive of the skin-facing adhesive layer has a tensile strength at 20% strain of less than 0.75N for a wafer sample having a width of 4 mm.

3. The ostomy appliance according to claim 1, wherein the predefined folding line further comprises a weakened line.

4. The ostomy appliance according to claim 1, wherein the predefined folding line extends from one edge portion of the adhesive wafer to another edge portion of the adhesive wafer.

5. The ostomy appliance according to claim 1, wherein the predefined folding line is linear.

6. The ostomy appliance according to claim 1, wherein the first designated thickness and the second designated thickness is measured between a surface of the one-piece release liner contacting the skin-contacting surface of the skin-facing adhesive layer and a surface opposite the surface of the one-piece release liner contacting the skin-contacting surface of the skin-facing adhesive layer.

7. The ostomy appliance according to claim 6, wherein the second designated thickness is less than 80% of the thickness of the first designated thickness.

8. The ostomy appliance according to claim 1, wherein the predefined folding line extends through a central portion of the one-piece release liner.

9. The ostomy appliance according to claim 1, wherein when the first part is released from the skin-contacting surface and folded along the predefined folding line and superimposed over the second part, the first part of the one-piece release liner forms an acute angle relative to the second part of the one-piece release liner at the predefined folding line.

10. The ostomy appliance according to claim 1, wherein the one-piece release liner is provided with at least one ear extended beyond an edge of the skin-contacting surface of the adhesive wafer.

11. The ostomy appliance according to claim 1, wherein the one-piece release liner is provided with two ears extending beyond edges of the skin-contacting surface, positioned on opposing edges thereof.

12. The ostomy appliance according to claim 1, wherein a connection between the first part and the second part does not allow separation of the first part from the second part without damaging the one-piece release liner.

18. The ostomy appliance according to claim 1, wherein the folding line is a linear v-shaped predefined folding depression that extends from one edge portion of the adhesive wafer to another edge portion of the adhesive wafer.

19. The ostomy appliance according to claim 18, wherein the linear v-shaped folding line extends through a central portion of the one-piece release liner.

13. An ostomy appliance for attachment to a stoma body comprising an adhesive wafer configured to be attached to a collection pouch, the wafer including a backing layer and a skin-facing adhesive layer, a skin contacting surface of the skin-facing adhesive layer being provided with a release liner covering the skin-contacting surface of the adhesive layer, the release liner having a planar surface that includes a predefined folding line such that the release liner is configured to lay flat with the planar surface on a flat surface, the release liner having at least a first part, a second part, and the predefined folding line between the first part and the second part, the predefined folding line having a depression having a second thickness that is less than a first thickness of the first part and the second part, prior to the first part and the second part being situated to at least partially face each other, where the material of the release liner has a cut out in the depression extending partly through the release liner at and along the predefined folding line to provide the second thickness less than the first thickness, the first part being inseparably connected to the second part by the predefined folding line with separation of the first part from the second part not being possible without damage to the release liner, the release liner being a single flat sheet on the skin-contacting surface of the skin-facing adhesive layer prior to being removed, the release liner being sharply folded along the predefined folding line to provide a tab as the first part or the second part configured for detachment or removal of the release liner from the skin-facing adhesive layer.

14. The ostomy appliance according to claim 13, wherein the predefined folding line is a weakened line.

15. The ostomy appliance according to claim 13, wherein the predefined folding line extends from one edge portion of the wafer to another edge portion of the wafer.

16. The ostomy appliance according to claim 13, wherein the predefined folding line is linear.

17. An ostomy appliance for attachment to a stoma body including an adhesive wafer configured to be attached to a collection pouch, the adhesive wafer including:

a backing layer and a skin-facing adhesive layer, the skin-facing adhesive layer including a skin-contacting surface; and

a removable release liner covering the skin-contacting surface of the adhesive layer, the release liner including;

a first side and a second side opposite the first side, the first side and the second side being in contact with the skin-contacting surface of adhesive layer prior to removal of the release liner from the skin-contacting surface of the skin-facing adhesive layer; and

a weakened line connecting a first part of the release liner to a second part of the release liner and extending from a first edge of the release liner to a second edge of the release liner opposite the first edge, the second side of the release liner including a cut out having a width and extending partly through the release liner at and along a portion of the weakened line, the release liner configured to have a second thickness along the cut out less than a first thickness of the first part and of the second part prior to detachment or removal of the first part or the second part from the skin-contacting surface of the skin-facing adhesive layer, such that the opposite side of first part and the second part from the skin-facing adhesive layer contacting surface are configured to at least partially face each other after the detachment or the removal between the first edge of the release liner and the second edge of the release liner and the cut out configured to provide a stop location on the release liner along the weakened line for the detachment or removal of the first part or the second part from the skin-contacting surface of the skin-facing adhesive layer;

wherein the release liner is configured as a single flat sheet on the skin-contacting surface of the skin-facing adhesive layer prior to being removed, where both the first part and the second part are configured to be in contact with the skin-contacting surface of the skin-facing adhesive layer prior to detachment or removal of the release liner from the skin-facing layer, and

wherein the release liner is configured to be folded at and along the weakened line and the cutout when the first part or the second part is detached from the skin-contacting surface of the skin-facing adhesive layer.

20. An ostomy appliance for attachment to a stoma body comprising an adhesive wafer configured to be attached to a collection pouch, the adhesive wafer including a backing layer and a skin-facing adhesive layer, a skin-contacting surface of the skin-facing adhesive layer being provided with a release liner configured to cover the skin-contacting surface of the skin-facing adhesive layer prior to detachment of the release liner from the skin-facing adhesive layer, the release liner having a planar surface that includes a predefined folding line such that the release liner is configured to lay flat with the planar surface on a flat surface, the release liner having at least a first part inseparably connected to a second part by the predefined folding line having a cut out extending partly through the release liner at and along the predefined folding line, the first part and the second part each having a first designated thickness and the predefined folding line having a second designated thickness that is less than the first designated thickness prior to folding the release liner at the predefined folding line, the release liner configured to be folded along the predefined folding depression and removed as a single sheet during application of the adhesive wafer, an entire surface of the skin-contacting surface of the skin-facing adhesive layer configured to be in direct contact with the release liner prior to detachment or removal of the first part or the second part of the release liner from the skin-facing adhesive layer.