Augmented blood removal after medicinal leech feeding in congested tissue flaps

Reconstructive microsurgery is performed to reattach, transfer, or transplant body tissues. Venous congestion is a complication that threatens the viability of the affected tissue and is often treated with medicinal leeches. Leech therapy has two phases: active bloodletting and passive bleeding from the leech wound after detachment, which can last for several hours. Unfortunately, the small blood volumes removed by medicinal leeches are generally ineffective in decongesting tissue. Our goal was to develop a device to augment blood removal during the passive-bleeding phase of leech therapy with the use of a porcine model of venous congestion. Results indicated that the use of the device resulted in significant increases in blood retrieval relative to reports of passive bleeding alone (141%, 156%, and 155% in 1, 2, and 3 hours, respectively). These results are an encouraging first step toward development of a mechanical device that completely replaces the use of medicinal leeches in modern medicine.

Abstract sourced from PubMed (NCBI) for the cited record. See the original publication for the authoritative version.

Porcine model device development showing 141-156% increased blood retrieval after leech detachment versus passive bleeding alone. Step toward mechanical alternative to medicinal leeches.

Explore cómo esta investigación se conecta con la práctica clínica

More peer-reviewed studies in Ensayos clínicos.

• Leech Therapy for Knee Osteoarthritis — The Landmark RCT — Michalsen et al. (2003)
• Leech-Assisted Flap Salvage — Systematic Review of 277 Cases — Whitaker et al. (2012)
• Effects of hirudotherapy on liver functions, lipid profile, and insulin sensitivity in rats with metabolic syndrome — Bilden A et al. (2026)
• Efficacy and Safety of Hirudotherapy for Improving Sperm Quality Parameters in Male Infertility: A Randomized Controlled Trial — Abtahi-Forooshani M et al. (2026)
• Reverse Sural Flap Venous Congestion Successfully Managed With Enoxaparin in a Male Patient With a Traumatic Foot Crush Injury: A Case Report — Velasco-Bustamante J et al. (2026)
• Investigation of the therapeutic effects of medicinal leech treatment on lower extremity ischemia-reperfusion injury — Ünal K et al. (2026)
• Efficacy of Medicinal Leech Therapy in Diverse Clinical Applications: A Comprehensive Study from Azerbaijan — Farzali S et al. (2025)
• HIRUDOTHERAPY IN RECONSTRUCTIVE SURGERY: CASE-REPORTS AND REVIEW — Heinz P et al. (2020)
• Hirudotherapy Efficacy and Complications in the Management of Microsurgical Breast Reconstruction: A Systematic Review — Foppiani J et al. (2024)
• Hirudotherapy in Wound Healing — Nair H et al. (2022)

Browse all ASH-analysed research →