These Flowprobes loosely encircle the vessel and position two transducers opposing a reflective plate to measure volume flow. The PS and PR series are available in a range of sizes, from 0.5 mm – 20 mm diameter. Often known as mouse nanoprobes, miniature PS series Flowprobes can be used to measure mouse-sized blood flows of < 1 ml/min in 0.5, 0.7 or 1.5 mm vessel diameters. A 75 – 95% fit of the vessel in the probe is recommended for accurate measurements.

V Series flowprobes, also known as Flex series nanoprobes, are designed for acute flow measurements with high resolution at low flows in small blood vessels, which is ideal for mice. The smaller probe is suitable for vessel diameters of 0.25 - 0.5 mm (mouse and rat femoral or hepatic arteries), while the larger probe is suitable for vessel diameters of 0.35 - 0.7 mm (mouse carotid and mesenteric arteries or portal vein; and rat carotid, superior mesenteric and renal arteries). Each flowprobe has a 60 cm cable and a Flexi-handle with CRA10 connector.

These cardiac output (CO) Flowprobes represent a completely new concept in Flowprobe design. Validated X-pattern full flow illumination is enhanced by a soft plastic probe liner to cushion the vessel, permitting sustained ultrasonic transmission with little need for acoustic coupling gel during acute intraoperative use and safe for extended implantation without complicated protocols to protect the vessel. Ideal for accurate, immediate, beat-to-beat measurements on the ascending aorta and pulmonary artery in large animal studies.

Note: The PAU series replaces the PAX series.