Accelerated Chronic Wound Healing Through Percussive Oxygen Flow and Continuous Oxygen changes in a Pressurized Chamber

Abstract

Diabetic foot ulcers and gangrenous wounds remain a major clinical challenge due to impaired perfusion, tissue hypoxia, infection, and delayed healing. Even after surgical intervention such as amputation, residual wounds often show poor granulation and prolonged healing because of compromised microcirculation and reduced local oxygen availability. This abstract presents a novel wound healing approach using continuous oxygen changes within a pressurized chamber, applied in the post-amputation setting for diabetic foot gangrene. Unlike intermittent or static oxygen delivery methods, this system provides a continuous flow of oxygen with controlled pressurization, enabling constant renewal of oxygen concentration at the wound interface and these changes help overcome diffusion limitations commonly seen in diabetic and ischemic tissues. This dynamic oxygen environment enhances diffusion into hypoxic tissues, maintains a favorable wound pO? gradient, and supports key physiological processes including angiogenesis, fibroblast proliferation, collagen synthesis, and bacterial load reduction. The pressurized chamber further enhances oxygen penetration into wound tissues while helping to reduce edema and bacterial burden. We report the case of a 54 year old male with type 2 diabetes mellitus who developed ischemic diabetic foot gangrene involving the first toe. Following surgical amputation, a pressurized chamber delivering percussive oxygen flow with continuous oxygen changes was applied to the wound site to accelerate granulation tissue formation, enhance wound bed preparation, and minimize the risk of secondary infection and delayed closure. The continuous flow of oxygen under controlled pressurization enables constant renewal of oxygen concentration at the wound interface, thereby addressing one of the major pathophysiological challenges in diabetic wound healing— chronic tissue hypoxia. This novel continuous oxygen therapy represents a promising adjunctive treatment for complex diabetic foot ulcers and post amputation wounds, with the potential to improve healing outcomes, reduce complications, and shorten overall recovery time.

Introduction

This study presents a novel oxygen therapy system designed to improve the healing of diabetic foot ulcers (DFUs) and post-amputation gangrenous wounds by using percussive oxygen flow within a controlled pressurized chamber. Chronic diabetic wounds are difficult to heal because of poor blood circulation, neuropathy, persistent infection, and tissue hypoxia, all of which reduce oxygen delivery to the wound. Since oxygen is essential for angiogenesis, collagen synthesis, fibroblast proliferation, immune defense, and tissue regeneration, inadequate oxygen availability significantly delays wound healing and increases the risk of infection and amputation.

The literature review highlights the importance of oxygen in wound repair and examines existing oxygen-based therapies, including Hyperbaric Oxygen Therapy (HBOT), Topical Oxygen Therapy (TOT), and Continuous Diffusion Oxygen Therapy (CDOT). While these approaches have demonstrated improvements in wound healing, they also have important limitations, such as high treatment costs, limited accessibility, inconsistent oxygen delivery, poor penetration into deep ischemic tissues, and difficulty maintaining a stable oxygen partial pressure (pO?). These shortcomings create a need for more effective oxygen delivery systems capable of sustaining oxygen-rich conditions within chronic wounds.

To address these limitations, the proposed system introduces a dynamic oxygen delivery mechanism that combines percussive oxygen flow, continuous oxygen replacement, and controlled pressurization inside a transparent wound chamber. The device consists of a percussive oxygen flow generator, an airtight biocompatible chamber, an external medical oxygen source, and connecting tubing. Oxygen is delivered as repeated pressurized pulses, continuously renewing the oxygen environment while simultaneously removing carbon dioxide, moisture, and other passive gases. This process maintains a consistently high oxygen concentration and pressure at the wound interface, enhancing oxygen diffusion into hypoxic tissues.

The therapeutic environment created by the system is designed to stimulate angiogenesis, collagen deposition, fibroblast proliferation, bacterial suppression, edema reduction, and tissue regeneration, thereby accelerating wound healing. The continuous gas exchange mechanism also prevents oxygen depletion and maintains an optimal microenvironment throughout the treatment period.

The proposed therapy was evaluated in a clinical case involving a 54-year-old male with type 2 diabetes mellitus suffering from ischemic diabetic foot gangrene complicated by sepsis. Following great toe amputation, intravenous antibiotic therapy, and extensive surgical debridement, the patient received treatment using the proposed oxygen therapy system. The wound was enclosed in the pressurized chamber, and medical oxygen was delivered through the percussive flow generator, providing approximately 30 oxygen exchanges per hour during 1.5-hour daily treatment sessions for 14 days.

Clinical observations demonstrated significant improvement in wound healing. Enhanced tissue oxygenation promoted granulation tissue formation, reduced infection, and accelerated recovery, ultimately enabling successful limb salvage and avoiding major lower-limb amputation. Continuous monitoring over a 20-day period showed progressive wound healing both visually and through wound analysis.

Overall, the study demonstrates that continuous percussive oxygen flow within a pressurized chamber offers a promising advancement over conventional oxygen therapies by providing sustained oxygen delivery, improved tissue penetration, and continuous removal of waste gases. This innovative approach has the potential to improve healing outcomes, reduce complications, shorten recovery time, and enhance the management of chronic diabetic wounds and post-amputation care.

Conclusion

Percussive oxygen therapy delivered within a transparent chamber containing a breathable medium represents a promising adjunctive treatment strategy for the management of post-amputation diabetic foot wounds. Diabetic patients frequently experience impaired wound healing due to chronic tissue hypoxia, microvascular dysfunction, reduced cellular activity, and a heightened risk of infection. By providing controlled oxygen directly to the wound environment, percussive oxygen therapy may help overcome these physiological limitations and create conditions that are more favorable for tissue repair. The enhanced availability of oxygen supports several critical phases of wound healing, including fibroblast proliferation, collagen synthesis, angiogenesis, and epithelialization. In addition, adequate oxygenation can improve local immune function, facilitate bacterial clearance and reduce the likelihood of wound-related complications. The percussive delivery mechanism may further enhance oxygen diffusion into compromised tissues, thereby improving perfusion and stimulating cellular responses necessary for regeneration. The use of a transparent treatment chamber with breathable medium eliminates the stagnant oxygen and make fresh oxygen environment. This approach may be particularly beneficial for patients with complex diabetic and ischemic wounds, where delayed healing often leads to prolonged hospitalization, recurrent infections, and an increased risk of further amputation.

References

[1] Ganesan, O.; Orgill, D.P. An Overview of Recent Clinical Trials for Diabetic Foot Ulcer Therapies. J. Clin. Med. 2024, 13, 7655. https://doi.org/10.3390/jcm13247655 [2] Narayan, N., Nareddula, U., Nanjundaiah, R. K., & Manakchand, K. K. (2026). Clinical and Histopathological Outcomes of High-Purity Type I Collagen in Chronic Wounds: A Systematic Review of Four Randomized Controlled Trials. Cureus, 18(1), e100717. https://doi.org/10.7759/cureus.100717 [3] Frykberg, R.G. Topical Wound Oxygen Therapy in the Treatment of Chronic Diabetic Foot Ulcers. Medicina 2021, 57, 917. https://doi.org/10.3390/medicina5709091 [4] Shuning Tian, Shenyu Tan, Mingjie Fan, Wenlin Gong, Tianchang Yang, Fangwen Jiao, Hongzhi Qiao, Hypoxic environment of wounds and photosynthesis-based oxygen therapy, Burns & Trauma, Volume 12, 2024, tkae012, https://doi.org/10.1093/burnst/tkae012. [5] Oropallo, A. R., Serena, T. E., Armstrong, D. G., & Niederauer, M. Q. (2021). Molecular Biomarkers of Oxygen Therapy in Patients with Diabetic Foot Ulcers. Biomolecules, 11(7), 925. https://doi.org/10.3390/biom11070925 [6] Guan, Y., Niu, H., Liu, Z., Dang, Y., Shen, J., Zayed, M., Ma, L., & Guan, J. (2021). Sustained oxygenation accelerates diabetic wound healing by promoting epithelialization and angiogenesis and decreasing inflammation. Science advances, 7(35), eabj0153. https://doi.org/10.1126/sciadv.abj0153 [7] Hypoxia in Wound Healing Technical Review https://embrient.com/wp-content/uploads/2025/08/Hypoxia-in-Wound-Healing-Tech-Note.pdf [8] Putri, I. L., Alyssa, A., Aisyah, I. F., Permatasari, A. A. I. Y., Pramanasari, R., & Wungu, C. D. K. (2024). The efficacy of topical oxygen therapy for wound healing: A meta-analysis of randomized controlled trials and observational studies. International wound journal, 21(7), e14960. https://doi.org/10.1111/iwj.14960 [9] Niederauer, M. Q., Michalek, J. E., & Armstrong, D. G. (2017). A Prospective, Randomized, Double-Blind Multicenter Study Comparing Continuous Diffusion of Oxygen Therapy to Sham Therapy in the Treatment of Diabetic Foot Ulcers. Journal of diabetes science and technology, 11(5), 883–891. https://doi.org/10.1177/1932296817695574 [10] He S, et al. Continuous oxygen therapy combined with wound dressing. Diabetes Res Clin Pract. 2021. Therapeutic effect of continuous diffusion of oxygen therapy combined with traditional moist wound dressing therapy in the treatment of diabetic foot ulcers - Diabetes Research and Clinical Practice [11] CADTH Health Technology Review https://www.cda-amc.ca/sites/default/files/pdf/htis/2024/RC1548-CDO-for-Wound-Healing.pdf

Copyright

Copyright © 2026 Dr. Soumya John , Sifi K P, Jaise Jacob, Safeer Kadavan . This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.