Efficacy and Safety of a Novel Autologous Wound Matrix in the Management of Complicated, Chronic Wounds: A Pilot Study

Wounds. 2016 Sep;28(9):317-327.


Introduction: The objective of this pilot study was to evaluate the efficacy and safety of a novel method using an autologous whole blood clot formed with the RedDress Wound Care System (RD1, RedDress Ltd, Israel), a provisional whole blood clot matrix used in the treatment of chronic wounds of various etiologies.

Methods and materials: Patients were treated at the bedside with the whole blood clot matrix. Blood was withdrawn from each patient using citrate, mixed with a calcium gluconate/kaolin suspension, and injected into an RD1 clotting tray. Within 10 minutes, a clot was formed, placed upon the wound, and fixed with primary and secondary dressings. Wounds were redressed weekly with a whole blood clot matrix. Treatment was terminated when complete healing was achieved, or when the clinician determined that the wound could not further improve without additional invasive procedures.

Results: Seven patients with multiple and serious comorbidities and 9 chronic wounds were treated with 35 clot matrices. Complete healing was achieved in 7 of 9 wounds (78%). In 1 venous ulcer with a nonhealing fistula, 77% healing was achieved. Treatment was terminated in 1 pressure ulcer at 82% closure, because an unexpected mechanical trauma resulted in deterioration; this was the only adverse event reported, unrelated to the product. No systemic adverse events occurred.

Conclusions: This pilot study demonstrates the in vitro autologous whole blood clot matrix is effective and safe for treating patients with chronic wounds of different etiologies. A larger clinical trial is needed to assess the relative success rate of the matrix in different types of wounds in a diverse population with comorbidities.

Publication types

  • Clinical Trial

MeSH terms

  • Aged, 80 and over
  • Biological Dressings*
  • Blood Coagulation / physiology
  • Chronic Disease / therapy*
  • Female
  • Humans
  • Israel
  • Male
  • Middle Aged
  • Pilot Projects
  • Platelet-Rich Plasma / physiology
  • Prospective Studies
  • Treatment Outcome
  • Wound Healing / physiology*
  • Wounds and Injuries / therapy*