Transonic Flowprobes and Flowsensors

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. A 75 – 95% fit of the vessel in the probe is recommended for accurate measurements.

Ordering details:

• PR and PS series probes are available for acute use (specify with prefix "MA") or as a custom, implantable configuration ("MC"). 
• The choice of cable orientation is available for the PR and PS series only. Choose the cable orientation that best suits the anatomical site:
  • Back "B" = perpendicular to the vessel;
  • Side "S" = parallel to the vessel;
  • Lateral "L" = for thoracotomy or special application.

PS Series 

• Sizes: n = 0.5, 0.7, 1.5, 2, 2.5, 3, 4, 6, 8, 10, 12, 14, 16, 20 mm vessel diameter 
• Acute Use: MA- nPSx (where n = size, series = PS, cable orientation = x)​
  • MA-nPSB (back cable orientation perpendicular to vessel)
  • MA-nPSS (side cable orientation parallel to vessel)
  • MA-nPSL (lateral cable orientation 0.5, 1.5, 2, 2.5, 3 only)
• Chronic Use: MC- nPSx-__-__-__-__ (specify cable length, reflector style, connector style, and acute/ chronic calibration)

PR Series

• Sizes: n = 1, 1.5 mm vessel diameter 
• Acute Use:
  • ​MA-nPRB (back cable orientation perpendicular to vessel)
  • MA-nPRS (side cable orientation parallel to vessel)
• Chronic Use: MC- nPRx-__-__-__-__ (specify cable length, reflector style, connector style, and acute/ chronic calibration)

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 2 – 14 mm Flowprobes have attached handles for intraoperative measurements in preclinical animal trials or vascular surgeries. The handle has a bendable neck so the probe head may be positioned as required. The open J-reflector encircles the vessel for momentary flow readings.

Acoustic gel is required to fill the air space between the probe and vessel to transmit the ultrasound signal. Hence these Flowprobes are only available for acute use preparations.

Ordering details:

• Acute use only: MA-nPMP 
• Sizes: n = 2, 3, 4, 6, 8, 10, 12, 14 mm diameter

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.

Ordering details:

• Please specify cable length and connector (see Details tab).
• Product code: MCnPAU where n = Size
• Sizes: n = 8, 10, 12, 14, 16, 20, 24, 28, 32, 36 mm vessel diameter
• Disposable Ultrafit Liners are available in two styles:
  • acute open style for momentary measurement
  • closed full-circle style for extended & chronic application.
• Each COnfidence Flowprobe is supplied with 1 acute and 1 closed Disposable Ultrafit liner of the same diameter as the Flowprobe. These liners are recommended for single use only and can be purchased separately (reorder) in packs of 5. 

Note: The PAU series replaces the PAX series.

Nanoprobes are specialized, miniature PS series Flowprobes, designed to measure mouse-sized blood flows of < 1 ml/min with Transonic Systems signature high resolution quality.

PS Series Nanoprobes 

• Sizes: n = 0.5, 0.7, 1.5 mm vessel diameter
• Acute Use: 
  • MA-nPSB (back cable orientation perpendicular to vessel 0.5, 0.7 only)
  • MA-nPSS (side cable orientation parallel to vessel 0.5, 0.7 only)
  • MA-nPSL (lateral cable orientation 0.5, 1.5 only) 
• Chronic Use:  MC-nPSx-__-__-__-__ (specify cable length, reflector style, connector style, and acute/ chronic calibration)

PXL Series sensors “clamp-on” to most flexible laboratory and extracorporeal tubing. They provide total physical and electrical isolation is maintained between the sensor and the liquid, and thus ideal for quick, repeatable process testing that is applied to multiple circuits without flow interruption. Applications include artificial heart and VAD performance, medical device and pump engineering, manufacturing and compliance flow testing. Different options are available for tubing outer diameter measured in inches and mm. Each flowsensor is supplied standard with 2 m cable and a CC16 16-pin metal connector.

PXN series sensors offer flexibility in studies where tubing requirements are subject to change. Sensors splice into laboratory tubing for volume flow measurements of blood and other fluids, ranging from <1 to 100 L/min. Applications include perfused isolated organ studies, flow phantoms and circulatory models, tubing flow requiring maximum sensitivity. Each flowsensor is supplied standard with 1.85 m cable and a CC16 or CP16 16-pin metal connector.