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Related Experiment Video

Updated: Jul 2, 2026

Autologous Endothelial Progenitor Cell-Seeding Technology and Biocompatibility Testing For Cardiovascular Devices in Large Animal Model

Autologous Endothelial Progenitor Cell-Seeding Technology and Biocompatibility Testing For Cardiovascular Devices in Large Animal Model

Published on: September 9, 2011

Testing a device to replace the leech for treating venous congestion.

Gregory K Hartig¹, Nadine P Connor, Thomas F Warner

¹Division of Otolaryngology, Department of Surgery, University of Wisconsin-Madison Medical School, K4/723 Clinical Science Center, 600 Highland Ave, Madison, WI 53792, USA.

Archives of Facial Plastic Surgery

|January 21, 2003

Summary

This summary is machine-generated.

A novel device effectively decongested fasciocutaneous flaps, preserving tissue viability during prolonged venous obstruction. This innovation significantly improved flap health and survival in a preclinical study.

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In Vitro Thrombosis Test for Ventricular Assist Devices

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Published on: March 21, 2025

Area of Science:

Plastic Surgery
Tissue Engineering
Vascular Surgery

Background:

Fasciocutaneous flaps are crucial in reconstructive surgery.
Venous obstruction poses a significant risk to flap viability.
Maintaining tissue perfusion and preventing congestion are critical challenges.

Purpose of the Study:

To evaluate a new device's efficacy in promoting decongestion and survival of fasciocutaneous flaps.
To assess the device's performance during a 15-hour period of complete venous obstruction.

Main Methods:

A porcine model was used with 9 x 7-cm fasciocutaneous flaps.
Complete venous obstruction was induced for 15 hours in control and treated groups (n=6 each).
Treatment involved applying up to 3 devices; efficacy was measured by blood volume, tissue color, perfusion, oxygen tension, and histology.

Main Results:

Control flaps showed severe congestion, necrosis, and poor perfusion.
Treated flaps exhibited improved skin color, surface perfusion, and oxygen tension.
Histological analysis of treated flaps revealed minimal congestion and no necrosis; mean blood removal was 29.5 mL/h.

Conclusions:

The tested device effectively decongested fasciocutaneous tissue during extended venous outflow obstruction.
Quantitative measures confirmed significant improvements in tissue health and viability.
This device shows promise for enhancing flap survival in reconstructive procedures.