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    Our research and development teams operate at a global level and generate synergies from our collective expertise and by drawing on related disciplines. We are also constantly exchanging information at an international level with independent technical institutions, key opinion leaders and multipliers in order to be able to ensure cooperation and knowledge management of the highest order. As part of this process, we also conduct extensive research, the results of which we continually present in workshops, at conferences and symposiums - either in documentation or talks given by our cooperation partners - and also publish in renowned scientific journals. This database contains a large number of these evidence-based scientific articles, most of which have been evaluated by independent assessors:

    1. Poster

      Wound bed preparation of a sacral pressure injury for dermal template using autolytic debridement

      Poster presented at Wounds Australia 2022 Conference 14.09.2022 Sydney


      A 65-year-old male bed bound patient with a BMI of 16 kg/m², a schizoid personality disorder, former strong alcoholism and an MCA stroke in 2019 with low rehabilitation potential, was presented with a sacral pressure injury to the District Nursing Service.


      Action(s) taken/ treatment provided

      The pressure injury was subjected to sharp debridement to remove the hard necrotic tissue. For further autolytic debridement, the wound was treated with a hydrogel wound dressing*. For exudate management, a superabsorbent wound dressing** was used as a secondary association. In the first week, the wound was additionally debrided mechanically. However, since this resulted in more arterial bleeding, treatment completely switched to autolytic debridement. Dressing changes were completed daily by Rest Home staff with weekly input from the District Nurse.



      After 5 days of autolytic debridement, dark eschar started to soften. Further maceration of the peri wound skin was prevented by the superabsorbent dressing via absorbing high quantities of exudate. After 15 days, the necrotic areas were starting to lift up. Granulation on some areas of the wound bed developed. After 28 days, some edges of the wound bed had partially healed. After 43 days the wound had healed to such an extent that autolytic debridement was no longer indicated and application of a dermal template commenced.


      Lesson(s) learned

      The hydrogel wound dressing in combination with the superabsorbent dressing were able to debride and prepare the wound bed for the next step of application with a dermal template.

    2. Poster

      The difficult case: NPWT for extensive soft tissue defects of the lower extremity

      Poster presented at EWMA 2022 23.05.2022 Paris, France


      We report on the case of a 14-year-old girl with extensive soft tissue defects on the right lower extremity up to the right hip following a traffic accident. The patient suffered a subtotal amputation of the right lower extremity with a rupture of the external iliac artery and the iliac vein.



      After CTA, the pulseless, ischemic leg was treated with autologous arterial und venous vascular graft. Perfusion resumed 4 hours post-accident. Osteosynthesis was carried out using an external fixator. Despite fasciotomy, extensive soft tissue necrosis occurred on the right lower extremity. Due to pre-terminal multiple organ failure caused by SIRS, a large-area necrosectomy was performed and NPWT started. The occlusive dressing was applied to the entire right lower extremity including the anogenital area up to the iliac crest using a tubular bandage*.


      Results / Discussion:

      This method allowed for sufficient negative pressure on the entire hip area and the entire right lower extremity. Septic condition improved immediately. After stimulating wound granulation, the secondary, serial split skin coverage of the defects was possible.



      In the case of extensive soft tissue defects on the lower extremity with deep substance defects in the area of the hip and simultaneous external fixation on the pelvic ring as well as cystofix and colostoma creation, the establishment of an NPWT system typically is difficult and time-consuming. With the tubular bandage it was possible to use a reliable, reproducible, time-saving occlusive and elastic system for the NPWT.

    3. Poster

      Multinational observational study on the performance, handling and safety of a new alginate wound dressing

      Poster presented at EWMA 2022 23.05.2022 Paris, France


      Alginate dressings play an important role in modern wound care. Areas of application include exudate management, autolytic debridement and hemostasis. Users of the alginate dressings have high demands on performance, handling and safety. In order to meet these requirements, a new alginate wound dressing* was developed from a mixture of 80% alginate and 20% viscose. In the study presented, the wound dressing was tested for the properties described.


      An observational study was carried out in clinical as well as outpatient settings at study centers in Germany, Austria and Poland. The users were asked to treat up to 8 patients with the new alginate according to the instructions for use. All patients were adults and suffered from highly exuding wounds which were either pressure injuries, arterial/venous ulcers, diabetic ulcers or postoperative wounds.

      Results / Discussion:

      The performance, measured in the parameters of time required for application and adaptation to the wound bed in dry and gelled conditions, was rated on average by users as good or very good/excellent on a 6-point Likert scale. More than 90% of the users stated that they could achieve their treatment goals, in particular exudate management, autolytic debridement and hemostasis. All handling parameters were also rated as good or very good on average. The alginate caused almost no maceration of the wound edge and was usually removed very easily in one piece.


      The alginate dressing met the performance, handling and safety requirements and was very positively received by users.

      Products Suprasorb A Pro
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    4. Journal article

      Management of esophageal perforations in infants by endoscopic vacuum therapy: A single center case series

      BMC gastroenterology 2022 22(1) 282


      Endoscopic vacuum therapy (EVT) has become a standard treatment method for esophageal perforations in adults. However, experience with EVT in infants is scarce. In this retrospective case series, we report on four very young infants who were successfully treated with EVT for esophageal perforations of different etiology.


      Four infants were diagnosed with esophageal perforations on day 7, 32, 35 and 159 of life, respectively. The youngest one was prematurely born in the 31st week of pregnancy weighing 980 g only. Three infants had perforations due to foreign body insertion (nasogastric tube or pulling through of percutaneous endoscopic gastrostomy (PEG) tube through the esophagus). One child had an anastomotic dehiscence after Foker's surgery for atresia. In three children EVT was applied as first-line therapy for perforation, in one child EVT was a rescue therapy due to persisting leakage after surgical closure involving thoracotomy. Depending on the esophageal diameter, either an open-pore drainage film or polyurethane sponge was attached to a single-lumen 8 Fr suction catheter, endoscopically (or fluoroscopically by wire-guidance) placed into the esophagus (intraluminal EVT) and supplied with continuous negative pressure (ranging between 75 and 150 mmHg). The EVT system was exchanged twice per week.


      Complete closure of the perforation/leakage could be achieved in all four infants (100%) after 22 days of continuous EVT (median value; range 7-39) and 4.5 EVT exchanges (median value; range 1-12). No serious adverse events occurred.


      EVT is an effective and safe addition to our therapeutic armamentarium in the management of esophageal perforations irrespective of its etiology. Here we prove the feasibility of EVT even in very young infants. The use of an extra thin vacuum open-pore drainage film is helpful to cope with the small esophageal diameter. EVT settings and exchange rates similar to those known from adult treatment were used.

      PMID 35658914
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    5. Journal article

      Pre-emptive active drainage of reflux (PARD) in Ivor-Lewis oesophagectomy with negative pressure and simultaneous enteral nutrition using a double-lumen open-pore film drain (dOFD)

      Surgical endoscopy 2022


      Postoperative reflux can compromise anastomotic healing after Ivor-Lewis oesophagectomy (ILE). We report on Pre-emptive Active Reflux Drainage (PARD) using a new double-lumen open-pore film drain (dOFD) with negative pressure to protect the anastomosis.


      To prepare a dOFD, the gastric channel of a triluminal tube (Freka®Trelumina, Fresenius) is coated with a double-layered open-pore film (Suprasorb®CNP drainage film, Lohmann & Rauscher) over 25 cm. The ventilation channel is blocked. The filmcoated segment is placed in the stomach and the intestinal feeding tube in the duodenum. Negative pressure is applied with an electronic vacuum pump (- 125 mmHg, continuous suction) to the gastric channel. Depending on the findings in the endoscopic control, PARD will either be continued or terminated.


      PARD was used in 24 patients with ILE and started intraoperatively. Healing was observed in all the anastomoses. The median duration of PARD was 8 days (range 4-21). In 10 of 24 patients (40%) there were issues with anastomotic healing which we defined as "at-risk anastomosis". No additional endoscopic procedures or surgical revisions to the anastomoses were required.


      PARD with dOFD contributes to the protection of anastomosis after ILE. Negative pressure applied to the dOFD (a nasogastric tube) enables enteral nutrition to be delivered simultaneously with permanent evacuation and decompression.

      PMID 34973079
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    6. Journal article

      Clinical experience using a monofilament fiber cleansing and debriding technology for various skin conditions.

      Journal of Drugs in Dermatology 2022 21(11) 11731180

      Background: Gentle skin cleansing and exfoliation and the use of moisturizers as an adjunct to medical treatment should be part of the prevention, treatment, and maintenance of cutaneous conditions such as acne vulgaris (acne) psoriasis, and xerosis. A monofilament fiber debriding technology (MFDT) is used for effective, safe, and rapid skin cleansing and exfoliation and debris, slough, and biofilm removal. The current review addresses the clinical experience using MFDT for various cutaneous conditions that require cleansing or exfoliation or both and how to combine it with medical treatment.


      Methods: A literature review explored clinical insights into the role of skin cleansing and exfoliation for patients with various dermatological conditions.

      The searches yielded 29 publications, 7 guidelines/algorithms, 13 reviews, 8 clinical studies, and one in vitro study.


      Results: Mechanical cleansing using a device can be helpful; however, avoid injury of the skin as it may result in thickening of the epidermis leading to hyperkeratosis and disruption of the skin barrier. Clinical experience with MFDT for acne, psoriasis, atopic dermatitis, and xerosis is discussed. Additionally, MFDT was used to exfoliate hyperkeratosis, actinic keratosis, and traumatic skin tattoos.


      Conclusions: Mechanical cleansing using MFDT was shown to be safe and beneficial for skin cleansing and exfoliation of various cutaneous conditions; however, only anecdotal evidence or small studies are available to support its use for these conditions.

      Downloads Citation (RIS)
    7. Journal article

      First report of closure of an iatrogenic recto-vesical fistula solely using endoscopic negative pressure therapy

    8. Journal article

      Case study: night compression use in a patient with Milroy's disease

      British journal of nursing (Mark Allen Publishing) 2022 31(12) 3441


      Lymphoedema is associated with dysfunctional lymphatics, tissue fibrosis and inflammatory changes in the skin and local tissue. Ensuring compression supports tissue health is crucial to managing lymphoedema. Providing patients with safe compression which enhances their tissue health is paramount when supporting their 24-hour self-management regimens. This case study explores the use of a new compression garment in two sitting positions in an adult with primary lymphoedema.


      An 18-year-old female (body mass index 25.2 kg/m2) with Milroy's disease was recruited. She attended two separate 1-hour sessions to evaluate tissue oxygenation (StO2) in chair-sitting and long-sitting (sitting up with a supported back and legs horizontal) positions. Following removal of her usual class 2 (20-30 mmHg) flat-knit compression hosiery, StO2 was recorded for 20 minutes: pre-, during and post the application of an adjustable compression garment (Lohmann & Rauscher) to the right leg.


      In the long-sitting position, StO2 levels started high at baseline (94.5%), and were relatively maintained both during and post-a short 20-minute intervention (94.1%). In the chair-sitting position, StO2 levels were significantly lower at baseline (52%), showing a 77% increase during the intervention (92%), followed by a small 9% decrease post-intervention (83.7%).


      This compression garment significantly increased StO2 levels in the chair-sitting position, while maintaining the effects of the patient's compression stockings, in the long-sitting position. Similar to non-lymphoedematous limbs, the patient's normal prescription hosiery maintains StO2. Through implementation of the short intervention sessions, night compression garments may have the potential to improve tissue health in individuals with primary lymphoedema, encouraging self-management and offering a potential night compression solution where the need arises in a 24-hour management plan.

      PMID 35736853
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    9. Journal article

      Comparison of the efficacy of novel non-invasive mechanical debridement methods – sterile sponge, monofilament fibre cloth and non-woven cloth impregnated with sodium hyaluronate and phospholipids in relation to traditional sterile gauze

      Advances in Dermatology and Allergology 2022 39(5) 856864

      Introduction: According to the European guidelines, the first step for local wound preparation is debridement, which stands for removing of devitalized tissue such as slough or necrosis. There are numerous types of debridement, but not all of them can be performed by non-specialists. Most of the research investigating efficiency of novel debridement products are carried out or funded by pharmaceutical companies.

      Aim: To compare the efficacy of relative necrotic tissue removal after 30 days on patients subjected to debridement with sterile sponge, monofilament fibre cloth, non-woven cloth impregnated with sodium hyaluronate and phospholipids and traditional sterile gauze.

      Material and methods: By use of photographic documentation at 7 days’ intervals and planimetry methods, the total wound surface area and sloughy tissue area was measured.

      Results: Results have shown that monofilament cloth was the most effective, removing on average 63.44 ±32.91% of necrotic tissue after the first procedure and 74.65 ±30.95% within 30 days of application, in comparison to the sterile gauze group that had on average only 23.53 ±19.16% of necrotic tissue removed at day 0 and 44.95 ±31.47% removed at day 30. Moreover, patients using all 3 products tested reported higher satisfaction with that treatment than those treated with gauze.

      Conclusions: Results imply that all those methods could be considered as they are well accepted by patients and cause less pain during the procedure, which is essential for good compliance and complete resolution of the lesions.

      Downloads Citation (RIS)
    10. Journal article

      Endoscopic vacuum therapy in the upper gastrointestinal tract: When and how to use it

      Langenbeck's archives of surgery 2022


      Endoscopic vacuum therapy (EVT) has emerged as a novel treatment option for upper gastrointestinal wall defects. The basic principle of action of EVT entails evacuation of secretions, removal of wound debris, and containment of the defect. Furthermore, there is increasing evidence that EVT reduces interstitial edema, increases oxygen saturation, and promotes tissue granulation and microcirculation. Various devices, such as macroporous polyurethane sponge systems or open-pore film drains, have been developed for specific indications. Depending on the individual situation, EVT devices can be placed in- or outside the intestinal lumen, as a stand-alone procedure, or in combination with surgical, radiological, and other endoscopic interventions.


      The aim of this narrative review is to describe the current spectrum of EVT in the upper gastrointestinal tract and to assess and summarize the related scientific literature.


      There is growing evidence that the efficacy of EVT for upper GI leakages exceeds that of other interventional treatment modalities such as self-expanding metal stents, clips, or simple drainages. Owing to the promising results and the excellent risk profile, EVT has become the therapy of choice for perforations and anastomotic leakages of the upper gastrointestinal tract in many centers of expertise. In addition, recent clinical research suggests that preemptive use of EVT after high-risk upper gastrointestinal resections may play an important role in reducing postoperative morbidity.

      PMID 35041047
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