Support-free surgical interface for wound

A surgical interface for a wound, obtained from a composition including a hydrophobic matrix comprising A parts of a triblock elastomer, B parts of a plasticising oil, C parts of polyethylene, and a hydrocolloid dispersed in a proportion containing 5 to 15% of the total weight of the hydrophobic matrix, with the following relations:

• A=100
• 300<B<500
• 10<C<50
• 9%<C/(A+C)<33.5%
• 1.5%<C/(A+B+C)<9%
• 83%>B/(A+B)>75%
• in which the interface composition is arranged in a thin layer on a protective support, distributed with through-holes produced in the interface arranged on the protective support, in which the interface is removed from its protective support in order to be used, and has sufficient cohesion for application to a wound.

A manufacturing method of a self-supporting interface for wounds, comprising the steps of

• preparing an interface composition including a hydrophobic matrix comprising A parts of a triblock elastomer, B parts of a plasticising agent, C parts of polyolefin, optionally a hydrocolloid dispersed in the composition in a proportion containing 0 to 30% of the total weight of the hydrophobic matrix, with the following relations:
• A=100
• 300<B<500
• 10<C<50
• 9%<C/(A+C)<33.5%
• 1.5%<C/(A+B+C)<9%
• 83%>B/(A+B)>75%
• arranging the interface composition in a thin layer on a temporary support,
• forming through-holes in the interface.