Provant Therapy of Venous Stasis Ulcer Trial

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01050023
Recruitment Status : Unknown
Verified July 2011 by Southern California Institute for Research and Education.
Recruitment status was:  Active, not recruiting
First Posted : January 15, 2010
Last Update Posted : July 20, 2011
Regenesis Biomedical, Inc.
Information provided by:
Southern California Institute for Research and Education

Brief Summary:
This pilot study hypothesizes that use of the Regenesis Provant Wound Therapy System (a radiofrequency device) twice daily over venous stasis ulcers (wounds thought to occur due to improper functioning of valves in the veins, usually of the legs) will result in increased rates of healing and a larger proportion of completely healed wounds after 12 weeks of therapy compared to wounds treated identically using a Provant device that is not activated to emit radiofrequency.

Condition or disease Intervention/treatment Phase
Venous Stasis Ulcers Device: Provant Device (Wound Therapy System) Device: Provant Device - Inactive Not Applicable

Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 25 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double (Participant, Investigator)
Primary Purpose: Treatment
Official Title: Provant Therapy of Venous Stasis Ulcer Trial
Study Start Date : November 2009
Estimated Primary Completion Date : November 2011
Estimated Study Completion Date : November 2011

Resource links provided by the National Library of Medicine

Arm Intervention/treatment
Experimental: 1 - Active Treatment
Provant device activated to emit RF energy
Device: Provant Device (Wound Therapy System)
Twice daily application of the active Provant device to the wound for twelve (12) weeks.

Sham Comparator: 2 - Inactive Treatment
Provant device not activated to emit RF energy
Device: Provant Device - Inactive
Twice daily application of the inactive Provant device to the wound for twelve (12) weeks.

Primary Outcome Measures :
  1. Rates of wound closure (measured as change in surface area - mm2/day) [ Time Frame: during and after 12 weeks of therapy ]

Secondary Outcome Measures :
  1. Proportion of wounds achieving complete healing [ Time Frame: afer 12 weeks of therapy ]

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Ulcer size between 1.0 and 16.0 cm2 at the time of randomization - measurements to be taken after sharp debridement if this is performed at the screening visit. Wounds must be free of necrotic tissue and fibrin slough after debridement with at least 90% of the surface covered with granulation tissue.
  • Target ulcer must be present for at least 6 weeks prior to randomization. Other ulcers close to the study ulcer are allowable and may be any size but should be greater than 2cm away from the study ulcer; no more than 4 ulcers total on the target limb are allowed.
  • A duplex ultrasound study documenting venous disease must be performed within on year of study entry. The ultrasound exam should document either chronic occlusion of the target limb popliteal, femoral, or iliac veins or the vena cava, or occlusion in the greater or lesser saphenous veins, or reflux in either the deep, saphenous, or perforating veins.

Exclusion Criteria:

  • No ulcer on the target limb including the study ulcer may be deep enough to expose structures deep to the adipose lay of skin such as muscle, fascia, tendon, joint, or bone. The presence of sinus tracts that have not been sufficiently marsupialized such that the wound depth can be assessed by gross visual inspection is similarly exclusion.
  • At the Screening or Randomization Visits, the presence of significant periwound cellulitis or the need to administer systemic antibiotics. system antibiotic therapy for any indication within 10 days of screening is an exclusion.
  • Baseline arterial studies obtained within one year of screening or at the screening visit must show either an ankle-brachial index of the affected limb greater or equal to 0.75 based on the higher of the two pedal arteries systolic pressure measured with Doppler ultrasound compared to the ipsilateral brachial artery systolic pressure determined with Doppler ultrasound.
  • Any major surgery or trauma affecting the target limb such as tibial fracture, knee arthroplasty, endovascular or open arterial or venous surgery or femoral stenting within 180 days of randomization.
  • Participation in any clinical trial involving therapy for wound healing within 30 days of randomization.
  • Concurrent administration of systemic agents that influence wound healing such as prednisone or dexamethasone in any quantity, cytotoxic chemotherapy agents, or immunosuppressive therapy.
  • Previous ionizing radiation therapy at any dose near the wound bed (within 5 cm).
  • A history of cancer in the target limb except for previous skin cancer treated in the target limb provided that a biopsy of the target wound is obtained within 90 days of randomization that confirms the absence of neoplasia.
  • Severe renal failure - serum creatinine greater than 2.5 or subject on hemodialysis.
  • Severe hepatic insufficiency: known cirrhosis, any degree of ascites, serum transamines more than three times the upper limit of normal.
  • Known allergy or intolerance to cadexomeric iodine or latex free Profore bandages.
  • The presence of 1) implanted pacemaker, automatic defibrillator, neurostimulator, bone stimulators, cochlear implants, or other devices with metal leads; 2) implanted or programmable pumps or intravenous or intrathecal drug delivery; 3) metal implant within 25 cm of area of treatment.
  • Pregnancy. Women of childbearing potential must agree to use adequate contraception.
  • Live expectancy of last than one year.
  • Uncompensated or uncontrolled right heart failure with associated edema.
  • Inability to walk independently (adaptive devices such as walkers or canes are allowed).
  • BMI greater than 50.
  • Severe anemia, hemoglobin less than 8.5
  • Poorly controlled diabetes, A1cHgb greater than 12
  • Severe hypoalbuminemia, serum albumen less than 2.6.
  • Active local or systemic malignancy such as lung cancer or leukemia
  • Severe hypertension - systolic bp greater than 180 or diastolic bp greater than 100
  • Severe hypoxemia - chronic oxygen or ventilator therapy.
  • HIV infection unless on retroviral therapy and viral load undetectable by PCR.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT01050023

United States, California
VA Long Beach Healthcare System
Long Beach, California, United States, 90822-5201
VA Greater Los Angeles Healthcare System
Los Angeles, California, United States, 90073
Sponsors and Collaborators
Southern California Institute for Research and Education
Regenesis Biomedical, Inc.
Principal Investigator: Ian Gordon, M.D., Ph.D. VA Long Beach Healthcare System

Responsible Party: Ian Gordon, M.D., Ph.D., VA Long Beach Healthcare System Identifier: NCT01050023     History of Changes
Other Study ID Numbers: #965
First Posted: January 15, 2010    Key Record Dates
Last Update Posted: July 20, 2011
Last Verified: July 2011

Keywords provided by Southern California Institute for Research and Education:
venous stasis ulcer
wound healing
Provant Wound Closure System
pain relief

Additional relevant MeSH terms:
Postphlebitic Syndrome
Postthrombotic Syndrome
Varicose Ulcer
Pathologic Processes
Peripheral Vascular Diseases
Vascular Diseases
Cardiovascular Diseases
Venous Insufficiency
Venous Thrombosis
Embolism and Thrombosis
Varicose Veins
Leg Ulcer
Skin Ulcer
Skin Diseases