Evaluating the Efficacy and Safety of the VERAFLO™ Dressing Kit for Wound Bed Preparation in Open Wounds

Prospective, Multi-center, Randomized, Open Label, Parallel Group Controlled, Non-inferiority Trial Evaluating the Efficacy and Safety of the VERAFLO™ Dressing Kit for Wound Bed Preparation in Open Wounds With Extensive Soft Tissue Damage

The objectives are to evaluate the efficacy and safety of the V.A.C. VERAFLO™ Dressing Kit for wound bed preparation in open wounds with extensive soft tissue damage in this trial.

Study Overview

• Status: Completed
• Conditions: Wound Healing
• Intervention / Treatment: Device: Investigational device: V.A.C. VERAFLO™ Dressing Kit; Device: Comparator device: Negative pressure wound drainage material

Detailed Description

The management of wounds represents a significant challenge in healthcare. There are many considerations necessary in developing the optimal treatment plan for achieving wound care goals. Current standard wound treatment in the management of wounds may involve clinical assessment, debridement, antibiotic treatment and local application of antiseptics or antimicrobials, and drainage.

The choice of therapeutic modality is one of many important decisions. Over time, wound care has progressed from the use of products such as dry gauze to advanced moist wound therapies and further to active wound healing therapies. One of such advanced wound healing therapies is negative pressure wound therapy (NPWT), which was developed in the 1990s. NPWT is a technology that is currently widely used in wound care and is promoted for use on complex wounds (open wounds). The therapy of NPWT and solution instillation with a dwell time (NPWTi-d) is used to adjunctively treat high-risk wounds that would benefit from vacuum-assisted drainage and controlled repeated delivery of topical wound solutions, such as normal saline and wound cleansers. Evidences suggests that normal saline is effective and readily available.

V.A.C. VERAFLO™ Dressing Kit, which was the investigational device, was a reticulated open-cell foam polyurethane ester dressing that could deliver normal saline instillation solution to the wound site for NPWTi-d therapy. The V.A.C. VERALFO™ Dressing Kit was approved in July 2010 by the U.S Food and Drug Administration (U.S. FDA) and December 2022 by the China National Medical Products Administration (NMPA).

This trial was designed as a pre-marketing trial of the V.A.C. VERAFLO™ Dressing Kit in China for NMPA registration. The device V.A.C. VERALFO™ Dressing Kit did not get NMPA approval when the study was initiated. On December 20th, 2022, it was approved by NMPA (Registration No.: 国械注进 20223140619).

There were no approved NPWTi-d dressings in China market during protocol design, so a negative pressure wound drainage material manufactured by Guangdong Shuangling Pharmaceutical Co., Ltd. was selected as the control group treatment device, which can apply the NPWT therapy with wall suction.

• Study Type: Interventional
• Enrollment (Actual): 170
• Phase: Not Applicable

Contacts and Locations

Study Locations

• China
  • Anhui
    • Hefei, Anhui, China
      • Anhui Provincial Hospital
  • Guangdong
    • Foshan, Guangdong, China
      • Foshan Hospital of TCM
  • Shanxi
    • Xi'an, Shanxi, China
      • Xi'an Honghui Hospital
  • Zhejiang
    • Hangzhou, Zhejiang, China
      • The Second Affiliated Hospital of Zhejiang University School of Medicine

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult; Older Adult
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

Only adult subjects meeting all of the following criteria to be considered for participation:

1. Subject voluntarily participate in the trial and sign the informed consent form, and is willing to comply with protocol and all visits
2. Is anticipated to be an inpatient for a minimum of 6 days
3. Age: between 18 years and 70 years
4. Patient with open wounds from various etiologies with extensive soft tissue damage after definitive surgical debridement and appropriate for NPWT
5. The minimum size of the wound as measured by 3D wound imaging prior to entry into the study is 8cm (in any dimension), minimum 1cm in width and 0.8cm in depth. i.e. the minimum wound size is 8cm×1cm×0.8cm. Only one wound per subject will be included in the study, regardless of how many wounds the subject has.
6. Female subjects of reproductive potential must have a negative pregnancy test result and must not be lactating at the screening visit.
7. Subject must be willing and able to use a highly effective contraception method during study participation.

Exclusion Criteria:

Subject who meets any of the following criteria will be excluded from participation in the study:

1. Subject undergoing chemotherapy
2. Subject with known immunodeficiency
3. Subject with serious complications or serious systemic infection
4. Known bleeding disorder or has received or is planning to receive long-term anticoagulation therapy
5. Known allergic reactions/hypersensitivity to any of the study treatment dressings components
6. Target wound is a burn wound
7. A wound open for 6 months or more
8. The subject's targeted traumatic wound injury is a craniofacial wound
9. There is implant (such as cardiac pacemaker, bone nail, bone lamella, artificial joint, artificial bone) visible in the targeted wound.
10. If undermining or tunneling represents approximately 15% or more of the wound.
11. A wound with enteric fistulas.

12. Subject's targeted wound that is contraindicated with investigational device including:

    1. Malignancy in the wound
    2. Untreated osteomyelitis
    3. Non-enteric or unexplored fistulas
    4. Necrotic tissue with eschar remaining in the wound after surgical debridement (once necrotic tissue or eschar is removed from the wound bed, subjects may be included)
    5. Unprotected, exposed blood vessel, anastomotic sites, organs, or nerves in direct contact with foam
    6. Thoracic or abdominal cavities
    7. Unexplored wounds that may communicate with adjacent body cavities
13. Subject's targeted wound that is contraindicated with the control group device and not suitable for participating in the trial judged by investigator
14. Participation in another device or drug study within the past 30 days before screening or during study participation
15. Other subjects who are not suitable for participating in the trial judged by investigator.
16. Wounds that require more than 2 images in order to capture the entire wound. NOTE: each image must not exceed 20 cm in any one direction.
17. Wound presents on greater than 50% of the circumference of any part of the body (e.g. wound that wraps around >50% of a leg or arm).

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: None (Open Label)

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Investigational device: V.A.C. VERAFLO™ Dressing Kit; NPWT consists in applying topical sub-atmospheric pressure to a wound that is covered with V.A.C. VERAFLO™ Dressing, sealed with drape and connected by a tube to a suction pump applying -125mmhg pressure with a drainage collection system. Instillation and dwell of a topical wound solution in the wound bed cycled at set intervals of 10 minutes every 3.5 hours without negative pressure applied. The target wound for each subject in both groups will be treated for up to 14 days or until deemed ready for closure by the investigator (whichever occurs first).	Device: Investigational device: V.A.C. VERAFLO™ Dressing Kit; Up to 170 subjects who meet the eligibility criteria will be randomized to the investigational group or control group at the ratio 1:1. Subjects will only be enrolled following definitive surgical debridement (if serial debridement performed) of the target wound. The target wound for each subject in both groups will be treated for up to 14 days or until deemed ready for closure by the investigator (whichever occurs first). The planned study period consists of the following visits: Screening (Day -3 to 0), Day of randomization (Day0), Dressing change visit(s), End of treatment visit. Following study treatment, the wound may be treated with any standard therapy selected by the physician, and then accepted secondary intervention for wound closure according to the wound bed preparation situation.
Active Comparator: Negative pressure wound drainage material; A Negative pressure wound drainage material manufactured by Guangdong Shuangling Pharmaceutical Co., Ltd. (with unspecified pressures ranging from -150 to -380mmHg ) was selected as the control group treatment device, which can apply the NPWT therapy with wall suction. This control device is widely used in clinical institutions in China to deliver NPWT. The target wound for each subject in both groups will be treated for up to 14 days or until deemed ready for closure by the investigator (whichever occurs first).	Device: Comparator device: Negative pressure wound drainage material; Up to 170 subjects who meet the eligibility criteria will be randomized to the investigational group or control group at the ratio 1:1. Subjects will only be enrolled following definitive surgical debridement (if serial debridement performed) of the target wound. The target wound for each subject in both groups will be treated for up to 14 days or until deemed ready for closure by the investigator (whichever occurs first). The planned study period consists of the following visits: Screening (Day -3 to 0), Day of randomization (Day0), Dressing change visit(s), End of treatment visit. Following study treatment, the wound may be treated with any standard therapy selected by the physician, and then accepted secondary intervention for wound closure according to the wound bed preparation situation.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Wound Volume Reduction Rate (Unit: %)	percent of total wound volume change relative to baseline over 14 days or until deemed ready for closure by investigator (whichever occurred first) over 14 days or until deemed ready for closure by investigator (whichever occurred first)	over 14 days or until deemed ready for closure by investigator (whichever occurred first)

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Time to Completion of Wound Bed Preparation (Unit: Day)	duration in days from the randomization until target wound ready for closure by secondary intervention judged by investigator.	Over 14 days or until deemed ready for closure by investigator (whichever occurred first)
Wound Area Reduction Rate (Unit: %)	percent of total wound area change over 14 days or until deemed ready for closure by investigator (whichever occurred first)	Over 14 days or until deemed ready for closure by investigator (whichever occurred first)

Other Outcome Measures

Outcome Measure	Measure Description	Time Frame
Incidence of Adverse Events (AE) (unit: %)	an AE is any untoward medical occurrence in the course of a trial, whether or not related to the investigational device	Through study completion, up to 14 days
Incidence of Serious Adverse Events (unit: %)	an SAE is any untoward medical occurrence in the course of a trial, whether or not related	Through study completion, up to 14 days
Incidence of Device Deficiencies (unit: %)	Device deficiency refer to any irrational risk in trial, such as tag errors, quality issues, failure, which may threaten subjects' health and safety while investigational device is under normal use.	Through study completion, up to 14 days

Collaborators and Investigators

• Sponsor: KCI USA, Inc
• Investigators: Principal Investigator: Zhijun Pan, Director, Second Affiliated Hospital, School of Medicine, Zhejiang University

Study record dates

Study Major Dates

• Study Start (Actual): August 4, 2020
• Primary Completion (Actual): September 18, 2023
• Study Completion (Actual): September 19, 2023

Study Registration Dates

• First Submitted: May 1, 2023
• First Submitted That Met QC Criteria: June 5, 2023
• First Posted (Actual): June 15, 2023

Study Record Updates

• Last Update Posted (Actual): March 25, 2025
• Last Update Submitted That Met QC Criteria: February 18, 2025
• Last Verified: February 1, 2025

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Wounds and Injuries
• Other Study ID Numbers: EM-05-015052

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: Yes
• product manufactured in and exported from the U.S.: Yes