Air Cold Atmospheric Pressure Plasma Treatment for Acceleration of Venous Ulcer Healing
试验速览
- 阶段
- 不适用
- 状态
- 进行中（未招募）
- 发起方
- 入组人数
- 68
- 试验地点
- 10
- 主要终点
- Ulcer Surface
研究概览
简要总结
In this medical trial, a novel prototype of a medical device based on a Cold Atmospheric Air Plasma Jet for the treatment is clinically tested on patients with venous leg ulcers. The device is characterized by producing the first cold air plasma jet compatible with living tissues at a low heat transfer rate with a temperature on the skin surface lower than 40 ºC. It has a practical design to be used by physicians during daily practice with a special focus on unhealed ulcers.
详细描述
The device to be validated in this test is an air-generating unit in a cold plasma state, a prototype of a medical device. Cold plasma-generating equipment is already available on the market and is intended for the treatment of chronic ulcers in patients. Its technology is based on the generation of a plasma jet produced with the noble gas argon. The novelty of this new plasma generator lies in the fact that its production is carried out by using atmospheric air, which implies greater efficiency and ease of use, being the first of its kind at an international level. The main mechanism of action underlying the therapeutic effect of cold atmospheric plasmas is the effect of the electric fields produced by the charged particles that make up the air in the plasma state. These fields are imperceptible to the patient, however, the effect on microcirculation in the area of application of the wound is very noticeable. The improvement in microcirculation extends for a longer time than the treatment as demonstrated by reported oxygen saturation studies using cold air plasmas DBD (Dielectric Barrier Discharge) that include clinical trials (1-4). Enhanced capillary blood flow increases local oxygen saturation and nutrient supply, thus promoting wound healing (5). In addition to the action of electric fields, there is an auxiliary decontamination mechanism generated by the emission of ultraviolet radiation, below the damage threshold for humans and excited and ionized oxygen and nitrogen molecules. This mechanism eliminates bacteria, including resistant ones, so that the regeneration capacity promoted by the main mechanism of action is enhanced (6-8).
The generator chosen for this test belongs to the Spanish company ION BIOTEC S.L. (PlasmAction Med), which has obtained an international patent (9). Its use in animals has been successfully developed in veterinary clinics and the positive results obtained in the closure of torpid ulcers using cold atmospheric plasmas have been demonstrated (10-13). The plasma jet is applied directly to the lesion presented by the patient with a power of 55% and with an intensity and duration of 60 s/cm2, by means of the regulator found at the end of an application hose. It does not use consumables or produce waste.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- Single (Participant)
盲法说明
Patients will be randomly distributed into two arms: Experimental and Control. Ulcers will be treated in all patients of the experimental arm using the PlasmAction Med cold plasma generator. The plasma jet will be programmed to be applied with an intensity of 55% power and with 60 seconds/cm2 of surface, the frequency being twice a week for 10 weeks. This therapeutic regimen is based on previous studies of previously published clinical trials with argon jet cold plasma (14,15). The administration of treatment will be the responsibility of the principal investigator and the collaborator with the help of the nursing staff. After the application of the plasma treatment, the patient will then be cured with alginate (Melgisorb Ag®) of the size 10 X 10 cm and 5x5 (3 units). For patients included in the control arm, alginate (Melgisorb Ag®) will be used as a cure for ulcers, size 10 X 10 cm and 5x5 (3 units), whose replacements will also be carried out twice a week.
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Be of legal age (18 years).
- •Signed informed consent.
- •Presenting at least one venous ulcer larger than 1 cm2 that has not healed in the last 3 weeks from its appearance.
- •Absence of surgical indication for ulcer coverage by skin graft.
排除标准
- •Uncontrolled diabetes mellitus (HbA1c > 8%). If during the trial the patient suffers a decompensation of diabetes, it will be considered an adverse event.
- •Patient allergic to silver or any other material that will be used during the cure of the ulcer under study.
- •Concomitant treatment with vacuum-assisted closure (VAC) therapy.
- •Use of topical antibiotic therapy. The minimum washing time should be 48 hours.
- •Presence of critical limb ischemia defined as an ankle-brachial index (ABI) below 0.5 or a transcutaneous O2 pressure (TcPO2) below 15 mmHg.
- •Treatment with corticosteroids in the 14 days prior to the study or with other immunosuppressants.
- •Presence of a chronic or active skin disorder that may negatively influence wound healing (such as Marfan or Ehlers-Danlos syndrome, systemic lupus erythematosus, systemic sclerosis, or psoriasis).
- •Pregnancy or lactation.
- •Advanced or metastatic stage cancer.
- •Deficiency states.
- •Dementia.
- •Post radiation wounds.
结局指标
主要结局
Ulcer Surface
时间窗: 18 weeks
The surface of the ulcer will be meassured by means of sofware image J2
次要结局
- Measurement of bacterial burden(18 weeks)