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The Most Precise Sensors for Your Biomedical Needs

When you choose Transonic measurements for your biomedical device, our team minimizes your engineering costs by deriving custom solutions from our breadth of sensor options.

Why Transonic?

Founded by an Engineer

Transonic knows the unique needs of engineers because we were founded by one — Cor Drost.

While at Cornell University, Cor invented transit-time ultrasound to directly measure true volume flow in biomedical applications because existing Doppler technology could only measure relative velocity and Electromagnetic technology had accuracy issues. Cor started Transonic to bring his innovation to the world, and transit-time ultrasound technology quickly became recognized as the gold standard for volume flow measurements in research applications, medical devices and surgical procedures. Transonic’s transit-time flow technology has been cited in over 4500 studies that include human surgery, research applications, bench validations, life-saving medical devices and many other applications. When accurate volume flow measurement is critical, Transonic provides the best measurement solution.

OEM Spotlight: Transit Time Ultrasound

Accurate flow measurements make a huge difference in your OEM products. In this technology spotlight, you'll see how transit-time ultrasound technology works, why it's a superior way to measure flow and how Transonic technology benefits your OEM products.
Renal Care Company


We approached Transonic because of their strong reputation in flow measurement, and have since been impressed by their unmatched technical expertise, understanding of clinical problems in our domain, and innovative solutions to meet those needs.
Emerging Renal Care Company

Frequently asked questions

Does Transonic offer both R&D services and manufacturing?

Yes. Transonic has offered end-to-end OEM design, development, and production capabilities for over 35 years. We are a full-service partner to a variety of leading medical device manufacturers.

Does Transonic offer OEM services beyond flow measurement?

Flow measurement is our singular focus, but other parameters can also be incorporated into your OEM application. These include: 

  • bubble detection
  • recirculation quantification,
  • oxygenator clotting volume
  • liquid properties,
  • and more.
Why would I pick Transonic over another firm offering similar flow measurement OEM services?

Transonic invented the transit-time ultrasound volume flow (mL/min) and transit-time ultrasound indicator dilution measurement technologies, and (with its clinical collaborators) created world-wide gold-standard applications for these technologies in a host of medical disciplines.  This has resulted in a range of patents, a wealth of Transonic “secret sauce” IP needed to deliver guaranteed performance in our next designs, a proprietary single-chip flow/indicator dilution solution that achieves the same measurement accuracy and resolution as our traditional standard-of care measurement devices, and a number of not-yet-deployed measurement features that are waiting for an application. All this will be rolled out to you in our co-engineering program to ensure design success.

What kind of performance can I expect with Transonic-designed OEM products/ components?

Transonic guarantees that measurements from our OEM designs will meet the same high performance as our gold-standard Transonic-branded products. Our bench and/or clinical tests are performed using benchmark Transonic device hardware.

What new measurement techniques have been developed by Transonic?

Transonic has been awarded 48 patents and counting! A sampling of our innovations and contributions to the medical device world, in collaboration with clinical and research partners, include:


Perivascular transit-time ultrasound flow measurement:

  • Intraoperative method to assess CABG patency during heart bypass
  • Intraoperative method in neurosurgery (to avoid intraoperative stroke) neonatal heart repair surgery, transplant and more
  • Numerous research tools for acute and chronic animal studies
  • Custom, application-specific

Transonic Flowprobes Sterile tubing clamp-on flow sensing:

  • Standard measurement approach for all centrifugal pumps
  • Hardware for the bypass perfusionist
  • Patient monitoring in Hemodialysis and ECMO

Transit-time ultrasound indicator dilution technology:

  • Hemodialysis monitoring (access flow, recirculation, cardiac output)
  • Cardiac output monitoring, adult to small babies, a minimally invasive Swan Ganz catheter replacement
  • Patient monitoring technologies for ECMO, CRRT
Does Transonic work with companies outside the U.S.?

Yes. Transonic works with a variety of OEM customers around the globe and has extensive experience launching products worldwide.

How can I get a consultation?

For a no-charge phone or email consultation about how Transonic can help move your business forward, simply click the button below and let us know how you prefer to be contacted.



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20 June, 2019

Which Fluids are Best Measured with Transit-Time Ultrasound?

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20 June, 2019

Doppler Velocity Flow Measurement vs. Transit-time Volume Flow Measurement: How They Differ

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10 Remarkable Blood Facts from the “Incredible Machine”

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