Provant Therapy of Venous Stasis Ulcer Trial

NCT01050023 | Unknown

• 1 other identifier: #965
• Study Type: interventional
• Target: 25
• Locations: 1 country
• Sites: 2

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.

Conditions

Venous Stasis Ulcers

Keywords

venous stasis ulcer; wound healing; Provant Wound Closure System; radiofrequency; Provant; pain relief

Outcome Measures

Primary Outcomes (1)

• Rates of wound closure (measured as change in surface area - mm2/day)

  during and after 12 weeks of therapy

Secondary Outcomes (1)

• Proportion of wounds achieving complete healing

  afer 12 weeks of therapy

Study Arms (2)

1 - Active Treatment

EXPERIMENTAL

Provant device activated to emit RF energy

Device: Provant Device (Wound Therapy System)

2 - Inactive Treatment

SHAM COMPARATOR

Provant device not activated to emit RF energy

Device: Provant Device - Inactive

Interventions

Provant Device (Wound Therapy System) DEVICE

Twice daily application of the active Provant device to the wound for twelve (12) weeks.

1 - Active Treatment

Provant Device - Inactive DEVICE

Twice daily application of the inactive Provant device to the wound for twelve (12) weeks.

2 - Inactive Treatment

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• 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.

You may not qualify if:

• 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.

Sponsors & Collaborators

• Regenesis Biomedical, Inc.: collaborator
• Southern California Institute for Research and Education: lead

Study Sites (2)

VA Long Beach Healthcare System

Long Beach, California, 90822-5201, United States

Location

VA Greater Los Angeles Healthcare System

Los Angeles, California, 90073, United States

Location

MeSH Terms

Conditions

Varicose Ulcer

Condition Hierarchy (Ancestors)

Varicose Veins; Vascular Diseases; Cardiovascular Diseases; Leg Ulcer; Skin Ulcer; Skin Diseases; Skin and Connective Tissue Diseases

Study Officials

• Ian Gordon, M.D., Ph.D.

  VA Long Beach Healthcare System

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: DOUBLE
• Who Masked: PARTICIPANT, INVESTIGATOR
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER

Study Record Dates

• First Submitted: January 13, 2010
• First Posted: January 15, 2010
• Study Start: November 1, 2009
• Primary Completion: November 1, 2011
• Study Completion: November 1, 2011
• Last Updated: July 20, 2011

Record last verified: 2011-07

Locations

US (2)