The frequency of dressing changes depends on the indi-
vidual wound situation. In the wound cleansing phase, 1
to 2 dressing changes daily may be required depending
on the amount of exudation. Later, as granulation tissue
forms, a dressing change every two to three days may be
sufficient. Sorbalgon is available in two sizes as square
dressings. Sorbalgon T is available as a ribbon.
PermaFoam – hydroactive foam dressing
The therapeutic efficacy of
The foam dressing PermaFoam is indicated for non-infect- the wound exudate, the polyethylene foam swells slightly
PermaFoam derives from its spe-
cial pore structure: Large pores
ed wounds with moderate to heavy exudate in the cleans- which ensures the contact necessary to draw off dis-
on the wound-facing side become
ing phase and during the granulation phase. Its therapeu- charges from the wound floor.
progressively smaller in the direc-
tic action is based on its special pore structure.
tion towards the top layer, which
The absorbed wound exudate then spreads out laterally
produces a high vertical capillari-
ty. This causes exudate to be
PermaFoam is a combination of two differently structured under the outer layer. In this regard, it is also important
quickly drawn up into the body of
The hydrophilic foam dressing foams that are connected with each other by a special that PermaFoam has – mainly due to the special pore
the foam, but it also ensures high
PermaFoam with its convincing
form of lamination. The absorbent layer of PermaFoam structure – has a high retention capacity for fluids. Even
retention for reliable fluid bind-
physical mode of action extends
consists of hydrophilic polyurethane polymers that can when pressure is applied from outside by, for example, a
ing.
the range of treatment options
for chronic wounds.
store up to nine times their own weight of liquid in their pressure bandage, the exudate is retained in the foam.
polymeric chains. The poyurethane matrix has a unique Also relevant is the fact that the absorptive capacity of
pore gradient: the large pores on the wound-facing side PermaFoam is only slightly reduced even under the pres-
become progressively smaller in the direction towards the sure of a compression bandage. For example, under a
top layer, which produces strong vertical capillary action. pressure of 42 mmHg, the absorptive capacity is reduced
The top layer of PermaFoam consists a flexible, close- by only 12 % compared with the pressure-free condition.
porous polyurethane foam and is semipermeable, which
means impermeable to germs but permeable to water Taken together, all these characteristics result not only in
vapour. the desirable rapid regulation of exudation, but also pro-
tect the wound margins from maceration because the
This material combination and design results in product absorbed wound exudates are not pressed back into the
characteristics which can counteract the maceration prob- wound again. In addition, the high permeability of the
lems often observed with chronic wounds: via the strong- outer layer to water vapour ensures a well-balanced
ly marked vertical capillarity, the surplus aggressive moist microenvironment for the wound, which further
wound exudate is quickly drawn up to underneath the supports the healing process.
outer layer. The large foam pores on the wound side
ensure that viscous exudate and detritus are also
absorbed without blocking the pores. When absorbing
Phase-specific wound management [50.51]
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