Life Sciences

At FISO we value our position as leader in the market. This is the reason why we, together with our partners, introduced a new era in micro-catheter pressure measurements. Our fiber optic sensors were  the first to be mass-produced therefore significantly reducing lead time as well as lowering the out-of-pocket costs to the researcher while maintaining all the advantages inherent to fiber optic (immunity to RF and EM and extremely small size).

The below sections will tell you a bit more about our products and solutions:

The new standard in hemodynamic pressure readings is MRI compatible 

The Technology

Fabry-Perot Cavity

Module and Chassis Specifications

Life Science Exclusive Distributor - Harvard Bioscience



Multiple-use Pre-clinical Pressure Catheter

0.9 French / 0.5 French for Small Animal Physiological Testing

Mouse research


The new standard in hemodynamic pressure readings is MRI compatible


The FISO Catheter offers significant advantages over traditional solid-state catheters, while maintaining excellent performance in signal integrity and frequency response. The other major benefits of the FISO Catheter include: (i) no side-facing sensor measurement artifacts such as is commonly encountered by proximity to vessel walls, and (ii) the ability to function within an MRI machine, or within any noisy EMI or RF-rich environment.




The Technology



The optical pressure transducer at the heart of the  comprises two parallel reflecting mirrors on either FISO Catheter is a Fabry-Pérot (F-P) etalon which side of a transparent medium, where the distance between the mirrors is known as the etalon cavity  length. The reflection spectrum of the F-P etalon has distinct peaks in wavelength as a function of the cavity length, physically corresponding to resonances of the etalon. Named after the two French physicists who mathematically  modeled this optical structure well over 120 years ago, the term etalon comes from the French word, étalon, meaning "measuring gauge" or "standard".


FISO’s pressure transducers are a flexible embodiment of the F-P etalon. As illustrated below, a deformable membrane is assembled over a vacuumed cavity, forming a small drum-like structure. The bottom of the drum and the inner surface of the flexible membrane form the sensing F-P cavity. When pressure is applied, the membrane is deflected towards the bottom of the drum, thus reducing the cavity length. After the NIST-traceable factory sensor calibration, the etalon cavity length  will correspond to a very precise pressure value. The signal conditioner is designed to be able to accurately determine the cavity length with sub-nanometer precision. In this way, the pressure transducer and signal conditioner form an  extremely precise and repeatable pressure measurement system.

FISO’s pressure transducers are a flexible embodiment of the F-P
etalon. As illustrated below, a deformable membrane is assembled
over a vacuumed cavity, forming a small drum-like structure. The
bottom of the drum and the inner surface of the flexible membrane
form the sensing F-P cavity. When pressure is applied, the membrane
is deflected towards the bottom of the drum, thus reducing the cavity
length. After the NIST-traceable factory sensor calibration, the etalon
cavity length will correspond to a very precise pressure value. The
signal conditioner is designed to be able to accurately determine the
cavity length with sub-nanometer precision.
In this way, the pressure transducer and signal conditioner form an
extremely precise and repeatable pressure measurement system.





Fabry-Perot CavityMouse research




 Fabry-Perot Cavity  

















Module and Chassis Specifications




This “signal conditioning” module is both the light source and receiver of the fiber optic measurement system. The FPI-LS converts the optical signal to a pressure reading and requires no external amplification box. The researcher may plug the catheter’s optical connector directly into the FPI-LS or may use an (optional) extension cable with accompanying connection box.



The bench-top chassis is provided with Evolution data acquisition and instrument control software. Modular in design, researchers can add FPI modules, and thus more channels, as time and budgets permit.












Life Science Exclusive Distributor - Harvard Bioscience 






Harvard Bioscience







Hugo Sachs 










Or contact us to learn more.


 Meet us