A Bio-Adaptive Janus-Adhesive Dressing with Dynamic Lubrication Overlayer for Prevention of Postoperative Infection...

Area of Science:

• Biomaterials Science
• Regenerative Medicine
• Surgical Innovation

Background:

• Postoperative wound infection and adhesion are significant clinical challenges following surgical trauma.
• Current wound dressings struggle to adapt to unpredictable wound geometries and provide integrated intraoperative and postoperative care.
• Developing advanced wound coverings is crucial for mitigating surgical complications and improving patient outcomes.

Purpose of the Study:

• To introduce a dynamic antifouling surface for wound protection.
• To report the in situ formation of a slippery-adhesive Janus gel (SAJG) for wound management.
• To evaluate the efficacy of SAJG in preventing infection and adhesion while promoting wound healing.

Main Methods:

• SAJG was formed in situ by assembling hydrogel (N-hydrosuccinimide ester-activated powders) and elastomer (silicon oil-infused polydimethylsiloxane).
• Hydrogel component rapidly absorbed water to form a tissue-bonding adhesive layer.
• Elastomer component provided a slippery surface, creating anisotropic properties due to molecular polarity differences.

Main Results:

• SAJG demonstrated anisotropic surface behavior, exhibiting both liquid repellency (hydrophilic vs. hydrophobic) and differential adhesion (bioadhesion vs. antiadhesion).
• In vivo models showed that SAJG effectively prevented bacterial infection, promoted wound healing, and avoided postoperative adhesion.
• The morphologically adaptive SAJG exhibited significant potential in managing complex wound infections and postoperative complications.

Conclusions:

• The developed SAJG dressing offers a promising solution for complex wound management.
• Its unique slippery and adhesive properties effectively combat bacterial infection and prevent adhesion.
• SAJG has substantial potential for clinical application in addressing surgical trauma complications.