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Nanocolloidal Hydrogel Coatings With Multiple Functions for Antithrombogenic Biointerfaces.

Tiantian Ding1, Chunxia Ren2, Liyuan Meng1

  • 1State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, China.

Advanced Healthcare Materials
|March 26, 2026
PubMed
Summary

A novel nanocolloidal hydrogel coating (NHC) improves medical device performance by resisting swelling, reducing friction, and preventing biological adhesion and blood clots. This durable coating enhances biocompatibility for implants and devices.

Keywords:
antibioadhesionantithrombosislubricationnanocolloidal hydrogel coatingstable adhesion

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Area of Science:

  • Biomaterials Science
  • Nanotechnology
  • Medical Device Engineering

Background:

  • Conventional hydrogel coatings for medical devices face challenges like swelling, delamination, poor durability, and inadequate resistance to thrombosis and bioadhesion.
  • Existing coatings often compromise device functionality and longevity due to these limitations.

Purpose of the Study:

  • To develop and characterize a nanocolloidal hydrogel coating (NHC) with enhanced lubrication, antibioadhesion, and antithrombogenicity.
  • To demonstrate the stability, durability, and broad applicability of NHCs on various medical devices and implantable bioelectronics.

Main Methods:

  • NHCs were prepared by surface anchoring methacryloyl-modified hyaluronate nanoparticles.
  • Coating properties including mechanical stability, friction reduction, protein/cell/bacterial adhesion resistance, and hemocompatibility were evaluated.
  • Antithrombotic activity was assessed in vitro and in vivo using heparin-modified NHCs.

Main Results:

  • NHCs exhibited long-term non-swelling behavior, ensuring durability and stable adhesion under physiological conditions.
  • Tunable NHCs significantly reduced friction for devices like catheters and stents, while effectively resisting protein, cell, and bacterial adhesion.
  • Heparin-modified NHCs demonstrated robust antithrombotic activity in dynamic circulation and rabbit shunt models, alongside good hemocompatibility and minimal inflammatory response.

Conclusions:

  • Nanocolloidal hydrogel coatings offer a versatile and highly effective solution to overcome limitations of conventional hydrogels for medical applications.
  • NHCs provide a clinically translatable platform for developing next-generation medical devices and implantable bioelectronics with superior biocompatibility and functionality.