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PLASFRI-CUV: Air Cold Atmospheric Pressure Plasma Treatment for Acceleration of Venous Ulcer Healing

Sponsor
Clinica Universidad de Navarra, Universidad de Navarra (Other)
Overall Status
Recruiting
CT.gov ID
NCT05894096
Collaborator
Hospital General Universitario Gregorio Marañon (Other)
68
Enrollment
2
Locations
2
Arms
15.2
Anticipated Duration (Months)
34
Patients Per Site
2.2
Patients Per Site Per Month

Study Details

Study Description

Brief Summary

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.

Condition or Disease Intervention/Treatment Phase
  • Device: Cold Atmospheric Plasma Jet Treatment
  • Device: Alginate Patch
 N/A

Detailed Description

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.

Study Design

Study Type:
Interventional
Anticipated Enrollment :
68 participants
Allocation:
Randomized
Intervention Model:
Parallel Assignment
Intervention Model Description:
Prospective, randomized, open-label, controlled clinical trial with conventional treatment. Programming and continuous recruitment. The ulcers of the experimental group will be treated with 60 seconds/cm2 of the wound surface, carried out twice a week, and with alginate with silver. For their part, the ulcers in the control group will be treated with alginate with silver, which will also be replaced twice a week. The total duration of the trial for each patient will be 10 weeks (2 times per week) followed by 8 weeks of follow-up. The treatment will be carried out twice a week, maintaining at least 72 hours between treatments. The patients included in this trial will be all those who attend consultations or are hospitalized. They must present at least one venous ulcer larger than 1 cm2 that has not healed in the last 8 weeks from its onset and with no surgical indication for ulcer coverage by a skin graft.Prospective, randomized, open-label, controlled clinical trial with conventional treatment. Programming and continuous recruitment. The ulcers of the experimental group will be treated with 60 seconds/cm2 of the wound surface, carried out twice a week, and with alginate with silver. For their part, the ulcers in the control group will be treated with alginate with silver, which will also be replaced twice a week. The total duration of the trial for each patient will be 10 weeks (2 times per week) followed by 8 weeks of follow-up. The treatment will be carried out twice a week, maintaining at least 72 hours between treatments. The patients included in this trial will be all those who attend consultations or are hospitalized. They must present at least one venous ulcer larger than 1 cm2 that has not healed in the last 8 weeks from its onset and with no surgical indication for ulcer coverage by a skin graft.
Masking:
Single (Participant)
Masking Description:
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.
Primary Purpose:
Treatment
Official Title:
Air Cold Atmospheric Pressure Plasma Treatment for Acceleration of Venous Ulcer Healing
Actual Study Start Date :
Mar 24, 2023
Anticipated Primary Completion Date :
Mar 24, 2024
Anticipated Study Completion Date :
Jun 30, 2024

Arms and Interventions

Arm Intervention/Treatment
Experimental: Cold Athmospheric Plasma Jet+Alginate patch

Leg Venous Ulcers will be treated in all patients belonging to the experimental arm using the PlasmAction Med cold plasma generator at atmospheric air pressure and alginate (Melgisorb Ag®) will be used after the plasma has been applied.

Device: Cold Atmospheric Plasma Jet Treatment
Application of Colf Atmospheric Plasma Jet on the wound

Device: Alginate Patch
Application of Alginate Patches on the wound
Active Comparator: Alginate patch

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.

Device: Alginate Patch
Application of Alginate Patches on the wound

Outcome Measures

Primary Outcome Measures

  1. Ulcer Surface [18 weeks]

    The surface of the ulcer will be meassured by means of sofware image J2

Secondary Outcome Measures

  1. Measurement of bacterial burden [18 weeks]

    Bacteriological cultures will be taken before and after of the treated group at 0, 5 and 10 weeks. Control groups at º, 5 and 10 weeks.

Eligibility Criteria

Criteria

Ages Eligible for Study:
18 Years and Older
Sexes Eligible for Study:
All
Accepts Healthy Volunteers:
No
Inclusion Criteria:

  • 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.

Exclusion Criteria:

  • 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.

  • Sepsis.

Contacts and Locations

Locations

Site City State Country Postal Code
1 Clinica Universidad de Navarra Pamplona Navarra Spain 31008
2 Clinica Universidad de Navarra Madrid Spain 28027

Sponsors and Collaborators

  • Clinica Universidad de Navarra, Universidad de Navarra
  • Hospital General Universitario Gregorio Marañon

Investigators

  • Study Director: Bernardo Hontanilla, Ph.D., Clinica Universidad de Navarra

Study Documents (Full-Text)

None provided.

More Information

Publications

Responsible Party:
Clinica Universidad de Navarra, Universidad de Navarra
ClinicalTrials.gov Identifier:
NCT05894096
Other Study ID Numbers:
  • PLASFRI-CUV
First Posted:
Jun 8, 2023
Last Update Posted:
Jun 14, 2023
Last Verified:
May 1, 2023
Individual Participant Data (IPD) Sharing Statement:
Yes
Plan to Share IPD:
Yes
Studies a U.S. FDA-regulated Drug Product:
No
Studies a U.S. FDA-regulated Device Product:
No
Keywords provided by Clinica Universidad de Navarra, Universidad de Navarra
Cold atmospheric plasma
venous ulcer
wound healing
Additional relevant MeSH terms:
Varicose Ulcer
Leg Ulcer
Ulcer

Study Results

No Results Posted as of Jun 14, 2023