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Related Experiment Video

Updated: Nov 1, 2025

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Blood Flow Within Bioengineered 3D Printed Vascular Constructs Using the Porcine Model.

Nhu Thao N Galván1, Samantha J Paulsen2, Ian S Kinstlinger2

  • 1Department of Surgery, Baylor College of Medicine, Houston, TX, United States.

Frontiers in Cardiovascular Medicine
|June 24, 2021
PubMed
Summary
This summary is machine-generated.

Engineered tissues with vascular networks can now be surgically implanted. This study presents a novel surgical model for connecting 3D printed hydrogels directly into a host’s vasculature, enabling blood flow.

Keywords:
3D printedbioengineered alternative tissueporcine (pig) modelsterolithographyvascular constructs

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Area of Science:

  • Regenerative Medicine
  • Biomaterials Science
  • Surgical Innovation

Background:

  • Biofabrication technologies enable 3D engineered tissues with vascular networks for oxygen and nutrient delivery.
  • Large-scale engineered tissues hold promise for regenerative medicine, but in vivo implantation is understudied.

Purpose of the Study:

  • To introduce and validate a surgical model for in vivo implantation and vascular connection of 3D printed hydrogels.
  • To assess the feasibility of direct in-line vascular connection using a porcine arteriovenous shunt model.

Main Methods:

  • Utilized projection stereolithography to fabricate perfusable poly(ethylene glycol) diacrylate (PEGDA) hydrogels.
  • Developed and optimized a surgical implantation procedure in deceased piglets.
  • Evaluated blood flow and connection robustness in a porcine arteriovenous shunt model.

Main Results:

  • Established robust connections between the host femoral artery and vein.
  • Patterned vascular channels in PEGDA hydrogels withstood arterial pressure.
  • Sustained blood flow through the implanted hydrogels for up to 6 hours.

Conclusions:

  • Demonstrated a viable surgical approach for in-line implantation of 3D printed hydrogels into host vasculature.
  • The surgical model is suitable for assessing biomaterials under physiological vascular conditions.
  • This work is a critical step towards transplantable engineered organs and regenerative medicine applications.