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Assessing Critical Parameters of Foam Dressings with Atraumatic Removal

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A DRESSING TO MEET USER NEEDS

Activheal advanced wound care range includes a highly absorbent foam dressing with a soft silicone wound contact layer to satisfy moderate to heavy exuding wounds and fragile peri-wound skin.

Wound dressings with a silicone wound contact layer are for use when adherence to the wound is a potential problem due to fragile skin.

 

KEY FEATURES OF ACTIVHEAL SILICONE FOAM

•Highly conformable
•Excellent absorption of exudate
•Remain in situ for 7 days
•Minimalises epidermal stripping
•Promotes healing through a moist wound environment
•Reduces pain at dressing changes
•Protects the peri-wound
•The ActivHeal silicone foam range is available in border and non-border variants.
 
DEFINITIONS
•Fluid Absorbed

The total amount of fluid absorbed by the foam dressing.

•Moisture Vapour Transmission Rate (MVTR)

The total amount of fluid lost through the film of the dressing, allowing the wound to breath.

•Fluid Handling Capacity

Sum of the fluid absorbed and the fluid transpired through the dressing.

•Peel Adhesion

The average force required to peel a length of adhesive dressing at 180° from a test substrate at a constant speed

 

LABORATORY TESTING TO INTERNATIONAL STANDARDS

BS EN ISO 13726-1:2002 Section 3.3 is the standard procedure in assessing the fluid handling capacity of waterproof wound dressings that are typically used for more than 24 hours. Laboratory testing has been completed to assess the fluid handling capabilities of several market leading foam dressings with silicone wound contact layers.

 

Results:

Activheal MVTR is 39% greater than Dressing A

Activheal absoption is 26% greater than Dressing A

Activheal TFH is 33% greater than Dressing A

 

Activheal MVTR is 6% greater than Dressing B

Activheal absoption is 5% greater than Dressing B

Activheal TFH is 6% greater than Dressing B

 

TESTING IN-HOUSE VALIDATED METHODS

A laboratory method used to assess the atraumatic removal of the silicone adhesive is a peel test using a tensometer. The tensometer removes the dressing from a porous substrate at a fixed rate and records the maximum and average forces required to remove the dressing, allowing a comparison of the adhesives .

 

Result:

Activheal peel force is 24% more gentle than Dressing A

Activheal peel force is 5% more gentle than Dressing B

 

CONCLUSION

ISO13726-1 testing is crucial for foam dressings whose critical function is to absorb exudate and manage the micro-environment of the wound. Peel adhesion testing is cruicial to bench mark atraumatic removal.

Activheal silicone foam range provides the optimal wound healing environment by having excellent fluid handling properties. Managing wound exudate protects the periwound area and progresses wound healing. The atraumatic wound contact layer provides a secure dressing, with pain free removal.

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