# US 9,039,668 B2 · Body attachment wafer for an ostomy device

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- Number: US 9,039,668 B2
- Document ID: US9039668B2
- Status: Granted
- Kind: B2
- Application number: 13/640,659
- Filed: 2011-04-12
- Published: 2013-04-18
- Granted: 2015-05-26
- Earliest claimed: 2010-04-12
- Assignees: Mölnlycke Health Care AB
- Applicants: Anna Svensby; Päranders Wärja; Sofia Lundgren
- Inventors: Anna Svensby; Päranders Wärja; Sofia Lundgren
- Web page: https://patentgrep.com/patent/US9039668B2

## CPC

- A61F 5/443: having {adhesive seals for securing to the body, e.g. of} hydrocolloid type seals, e.g. gels, starches or karaya gums
- A61F 5/44: Devices worn by the patient for reception of urine, faeces, catamenial or other discharge (absorbent pads, e.g. sanitary towels, A61F13/15; drainage appliances for wounds A61M27/00); Colostomy devices
- A61F 5/445: Colostomy, {ileostomy or urethrostomy} devices (A61F5/441, A61F5/442, A61F5/443 take precedence)
- A61F 5/448: Means for attaching bag to seal ring
- A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C)

## Abstract

Provided is a body attachment wafer for attaching an ostomy device to a wearer. The body attachment wafer includes a plastic film having an opening therein, a layer of adhesive coated onto one side of the plastic film, and a stiffening layer releasably attached to the plastic film on the side thereof opposite to the side coated with adhesive. The layer of adhesive comprises a region surrounding the opening in the plastic film in which the thickness of the layer of adhesive is decreasing in a direction towards the circumference of the plastic film, the layer of adhesive having its largest thickness adjacent to the opening in the plastic film. The adhesive consists of a silicone gel adhesive having a softness exceeding 8 mm.

## Claims

### Claim 1

A body attachment wafer for attaching an ostomy device to a wearer, comprising:
a plastic film having an opening therein,
a layer of hydrophobic adhesive coated onto one side of said plastic film, and
a stiffening layer releasably attached to said plastic film on the side thereof opposite to the side coated with the hydrophobic adhesive,
wherein the layer of the hydrophobic adhesive is configured to adhere to skin and comprises a region surrounding the opening in the plastic film in which the thickness of the layer of adhesive is decreasing in a direction towards the circumference of the plastic film, the layer of adhesive having its largest thickness adjacent to the opening in the plastic film, and
wherein the layer of the hydrophobic adhesive consists of a hydrophobic silicone gel adhesive having a softness exceeding 8 mm.

### Claim 2 (depends on 1)

The body attachment wafer of claim 1, wherein the layer of hydrophobic silicone gel adhesive has a thickness adjacent to the opening in the plastic film of 0.1 mm to 10 mm.

### Claim 3 (depends on 2)

The body attachment wafer of claim 2, wherein a minimum thickness of the layer of hydrophobic silicone gel adhesive is 0.05 mm.

### Claim 4 (depends on 1)

The body attachment wafer of claim 1, wherein the layer of hydrophobic silicone gel adhesive has a region adjacent to the opening in the plastic film, in which the thickness of the layer of hydrophobic silicone gel adhesive does not decrease.

### Claim 5 (depends on 1)

The body attachment wafer of claim 1, wherein the layer of hydrophobic silicone gel adhesive has an outermost region in which the layer of hydrophobic silicone gel adhesive has a minimum thickness.

### Claim 6 (depends on 5)

The body attachment wafer of claim 5, wherein the minimum thickness of the hydrophobic silicone gel adhesive measured in the outermost region is 0.05 mm.

### Claim 7 (depends on 1)

The body attachment wafer of claim 1, wherein the layer of hydrophobic silicone gel adhesive has a largest thickness adjacent to the opening in the plastic film of 0.1 mm to 4 mm.

### Claim 8 (depends on 1)

The body attachment wafer of claim 1, wherein the layer of hydrophobic silicone gel adhesive has a largest thickness adjacent to the opening in the plastic film of 0.2 mm to 2 mm.