Ex Vivo Perfusion

Pumps, oxygenation, temperature control, and nutrient delivery each support a different requirement for continued tissue function. The pump circulates perfusate through the vascular network, oxygenation supplies the circulating fluid, temperature control helps reproduce physiological conditions, and nutrients support cellular activity. Together, these components create a controllable environment in which organ performance can be assessed outside the body.

These measurements provide complementary evidence about organ condition. Vascular resistance reflects how readily perfusate moves through the vessels, metabolism indicates ongoing tissue activity, and viability summarizes whether the tissue remains suitable for continued assessment or use. Monitoring them over time allows investigators to evaluate functional preservation rather than relying only on the duration of support.

Controlled oxygenation, temperature, and nutrient delivery help reproduce key physiological conditions that an organ normally experiences in the body. Maintaining these factors supports preservation of function and makes assessments more meaningful. Their regulation also gives researchers a defined environment for examining changes in vascular behavior, metabolism, and tissue viability under monitored experimental conditions.

A typical setup connects the organ’s blood vessels to a circuit that contains a pump and controlled perfusate. The system then regulates oxygenation, temperature, and nutrient delivery while circulating fluid through the tissue. Throughout the run, investigators monitor vascular resistance, metabolism, and viability to determine whether function is maintained and to support subsequent evaluation or treatment.

In transplantation, the technique supports organ preservation and viability testing before an organ is considered for use. By maintaining function outside the body, it can provide additional information about organ condition and may extend preservation time. This assessment may also help increase the number of organs judged suitable for transplantation, according to the monitored functional results.

The platform allows investigators to study disease, evaluate therapeutics, and deliver targeted treatments before transplantation. Because the organ remains outside the body while perfusate conditions and responses are monitored, researchers can examine treatment effects in a controlled setting. These applications extend the technique from preservation alone to pretransplant investigation and intervention.