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. 2013 Nov 20;10(Suppl 1):32–42. doi: 10.1111/iwj.12183

Figure 2.

Figure 2

Functional principles of the negative pressure wound therapy (NPWT). (A, B) The wound (A) and a foam that has been fitted to the wound geometry, cut to size and placed inside the wound (B). (C, D) The wound is sealed airtight with a thin adhesive drape (C); similarly, with the attached suction pad (trac‐pad connector) including the drainage tube (D). (E) The wound is hermetically sealed with a thin adhesive drape and connected to the vacuum source by means of the attached suction pad (suction strength 0 mmHg). (F) Suction strength 125 mmHg. The foam has collapsed and the exudate collection reservoir is already partly filled. (Reprinted with permission from Dr Christian Willy.)