Hemostatic Materials for Wound Management

Uncontrolled bleeding remains a leading cause of preventable death in both civilian and military settings, driving the development of advanced hemostatic materials that can rapidly arrest blood loss and support subsequent tissue repair. Contemporary approaches harness a range of physical forms—sponges, foams, powders, hydrogels and adhesives—each designed to combine rapid fluid absorption with promotion of clot formation. Natural biopolymers such as chitosan, cellulose, alginate and gelatin offer intrinsic biocompatibility and biodegradability, while synthetic polymers and nanoparticle composites provide tunable mechanical strength, porosity and bioactive functionality. Key strategies include the creation of highly interconnected porous structures to maximise blood uptake, surface functionalisation to accelerate platelet adhesion and activation, and incorporation of shape-memory and stimuli-responsive features for irregular or non-compressible wounds. Emerging designs integrate antimicrobial agents or pro-regenerative cues, bridging early haemostatic control with longer-term vascularisation and tissue integration. Despite a growing arsenal of commercial products, challenges remain in achieving universal efficacy across wound geometries, balancing rapid clotting with minimal thermal injury or foreign-body reaction, and ensuring ease of application in austere environments. Ongoing research seeks to refine material architectures at the micro- and nano-scale, develop biomimetic platelet- or fibrin-mimicking agents, and engineer multifunctional dressings that unify haemostasis, infection control and regenerative support.

Research from Nature Portfolio

Recent studies have introduced a novel superporous chitosan sponge fabricated via a dual compaction method that yields highly interconnected pores, dramatically enhancing blood absorption rate, mechanical resilience and pressure retention on non-compressible wounds. In animal models of organ injury, this sponge outperforms standard gauze and commercial gelatin devices by accelerating clot formation, promoting cell infiltration and supporting in situ tissue regeneration. Earlier foundational work demonstrated that injectable antibacterial conductive cryogels based on quaternized chitosan and carbon nanotubes combine rapid blood-triggered shape recovery with high uptake capacity and potent haemostatic efficacy in lethal liver and limb amputation models. Another pioneering report detailed microchannelled alkylated chitosan sponges produced by 3D-printed fibre leaching and active surface modification, which not only deliver superior pro-coagulant and anti-infective performance in heparinised animal models but also facilitate vascular infiltration and tissue integration during early wound healing.

Hemostatic Materials for Wound Management publication trend

The graph below shows the total number of articles in hemostatic materials for wound management across all publications each year (not limited to Nature Index journals).

Technical terms

Hemostasis: The physiological process of blood clot formation to stop bleeding.

Hydrogel: A three-dimensional network of hydrophilic polymers capable of holding large amounts of water or biological fluids.

Cryogel: A macroporous gel formed by gelation at subzero temperatures, known for rapid shape recovery and high absorption.

Shape-memory: The ability of a material to recover a predefined shape upon exposure to a stimulus such as temperature or fluid contact.

Porosity: The fraction of void space within a material, governing fluid absorption and cell infiltration.

Chitosan: A polysaccharide derived from chitin, prized for its biocompatibility, biodegradability and intrinsic haemostatic activity.

Coagulation cascade: A series of enzymatic reactions leading to fibrin formation and stable blood clot development.

References

1. Superporous sponge prepared by secondary network compaction with enhanced permeability and mechanical properties for non-compressible hemostasis in pigs. Nature Communications (2024).
2. Injectable antibacterial conductive nanocomposite cryogels with rapid shape recovery for noncompressible hemorrhage and wound healing. Nature Communications (2018).
3. Microchannelled alkylated chitosan sponge to treat noncompressible hemorrhages and facilitate wound healing. Nature Communications (2021).
4. Super‐Elastic Carbonized Mushroom Aerogel for Management of Uncontrolled Hemorrhage. Advanced Science (2023).
5. Emerging hemostatic materials for non-compressible hemorrhage control. National Science Review (2022).
6. Application of Alginate-Based Hydrogels in Hemostasis. Gels (2022).