Perfusion Occlusion for Physiology Lab

Perfusion occlusion option designed for isolated lung perfusion applications requiring double or individual arterial and venous occlusion. The system allows simultaneous interruption of pulmonary arterial inflow and venous outflow for measurement of segmental vascular resistance and microvascular pressure. Individual arterial and venous occlusion can also be used to determine large and small artery resistance, large and small vein resistance and vascular compliance. Manufactured by Atico Export with attention to applicable quality, safety and functional requirements for physiological research and laboratory applications.

• Measurement of segmental vascular resistance
• Measurement of precapillary resistance
• Measurement of post-capillary resistance
• Measurement of microvascular pressure
• Determination of large artery resistance
• Determination of small artery resistance
• Determination of large vein resistance
• Determination of small vein resistance
• Determination of vascular compliance

Double Occlusion :

• Simultaneously pinches off pulmonary arterial inflow and venous outflow
• Uses two pinch valves for simultaneous occlusion
• Pulmonary arterial pressure and venous pressure can be measured during occlusion
• Pressure equalization occurs after a short period
• Resulting clamp pressure can be measured
• Supports evaluation of pulmonary and segmental vascular resistance

Resistance Calculation :

Precapillary Resistance :

• Rpre = (Pa - Pc) / Flow

Post-Capillary Resistance :

• Rpost = (Pc - Pv) / Flow

Pressure Measurements :

• Pa : Pulmonary arterial pressure
• Pv : Venous pressure
• Pc : Clamp pressure
• Flow : Flow rate measured before occlusion

Individual Occlusion :

• Allows separate arterial occlusion
• Allows separate venous occlusion
• Supports determination of large and small artery resistance
• Supports determination of large and small vein resistance
• Supports measurement of vascular compliance

Includes :

• Stand
• Two pinch valves
• Controller for perfusion occlusion

Required Equipment :

• Peristaltic pump with external ON/OFF control