Characterizing and Tuning Perfusion Parameters Within an Innovative, Versatile Oxygenating Perfusion System

Area of Science:

• Biomedical Engineering
• Physiology
• Transplantation Science

Background:

• Oxygenated perfusion is crucial for improving tissue preservation in transplantation, bioreactor applications, and resuscitation.
• Existing methods for oxygenated perfusion can be complex and lack portability.

Purpose of the Study:

• To develop and characterize a novel, portable device for oxygenated and pulsatile perfusion.
• To evaluate the device's performance across various physiological conditions mimicking different organs.

Main Methods:

• A single pump-oxygenator component with cyclically inflated/deflated silicone tubes was designed.
• Pump variables (oxygen pressure, tube length) were tested against hydraulic models of kidney, liver, and heart vascular resistance.
• Perfusion pressures, flow rates, and oxygenation rates were measured and pulse rates optimized.

Main Results:

• The device achieved perfusion pressures from 3.5 to 109 mmHg and flow rates from 1.4 to 71.8 mL/min.
• Oxygenation rates reached up to 316.6 µmol/min.
• The device demonstrated capability to meet parameters used in prior kidney, liver, and heart preservation studies.

Conclusions:

• A novel portable device effectively provides regulated oxygenated and pulsatile perfusion.
• The device's performance is tunable and suitable for diverse applications including organ preservation and resuscitation.
• This technology offers a promising solution for advanced tissue perfusion needs.