FISO Medical

Patient in MRI

 

FISO is a pioneer in the introduction of fiber optic sensing technologies in medical applications. With its line of fiber optic pressure transducers, flagship products of the company on the medical market, FISO has reach the status of world leader as the OEM supplier of fiber optic pressure sensors.

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


Small Fiber Optic Pressure Transducers

Capabilities

The Transducers

The Complete System

The Technology

Technical Datasheet and pdf

Meet us

 

 

Small Fiber Optic Pressure Transducers

 

The FISO’s sensors offer significant advantages over traditional solid-state catheters:


- The diameter of the working length section is as small as 0.5 French 

- The sensor tip size can be as small as 0.8 French 

- The flexibility of the glass fiber offers excellent deliverability without being prone to kinking like electrical wires 

- The front looking configuration of the sensor tip prevent side-facing/wall bouncing artifacts in the measurement

-  Having no metallic component, there is a total immunity to interference from RF, MW or MRI system

 

 

 

 

PRessure

Above picture: FOP-M260 pressure transducer and THR temperature probe

 

APPLICATIONS:

Neuroscience - Intracranial pressure

Cardiovascular - LV pressure, arterial BP

Intraocular pressure

Urology – Bladder/Ureter pressure

Spine – Intradiscal pressure

Bone – Intermedullary pressure

MRI Gating – Arterial blood pressure or LV pressure for image gating

Respiratory

Gastro Intestinal

 

Capabilities

 

Design of fiber optic temperature probes, pressure sensors and signal conditioners

  • FISO’s experienced engineering team has worked on tens of products used in FDA approved devices
  • In-house experts in electronics, physics, chemistry and optics
  • Stringent regulatory compliance and industry's best practices ensure quality
  • Partnership with world-leading universities, institutes and research centers

 

Manufacturing of catheter sub-assemblies and complete devices

  • Multiple robotic sensors’ assembly lines for high-volume production (Hundreds of thousands of sensors per year)
  • Clean room space available for prototypes, pilot build or validation and pre-clinical build
  • Multiple certified manufacturing sites
  • Broad variety of suppliers and partners for tube components, adhesive, extrusion, machined or molded part

 


The Transducers

 

The sensor is made of a MOMS bonded to the tip of an optical fiber. The MOMS consist of deformable membrane 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 Fabry-Perot cavity. When pressure is applied, the membrane is deflected towards the bottom of the drum, thus reducing the cavity length.

 

- The FOP-M260 has a diameter of 260microns (0.010’’) and has a standard range of ±300mmHg relative to atmospheric pressure.

- The FOP-MIV, assembled on a fully-robotized manufacturing line has a diameter of 550microns (0.022’’) and is offer on a ±300mmHg range and 0-150psi range.
- They are both used in several FDA and CE approved devices in a variety of clinical applications.


Three fiber optic pressure sensors with gloves

From top to bottom:

  • FOP-M260 protected by a continuous sheath of 300µm of diameter
  • FOP-MIV protected by a continuous sheath of 640µm of diameter
  • FOP-M260 has only the MOMS, the sensor itself, in a short protective sheath of 300µm in diameter. The proximal length is the optical fiber having 155µm (less than 0.5French) of diameter.

 

 

The Complete System

 

This “signal conditioning” module is both the light source and receiver of the fiber optic measurement system. The FPI-HR or FPI-HS convert 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 module or may use an (optional) extension cable with accompanying connection box.


FPI-HR:

FPI-HR

Single channel (125Hz)

Dual channel (250Hz)


FPI-HS

Single channel (15,000Hz)


The bench-top EVO 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.


EVO-SD-2

Host up to 2 modules

EVO-SD-5

Host up to 5 modules

 

 

 

 

 

The Technology

FPThe optical pressure transducer at the heart of the FISO transducer is a Fabry-Pérot (F-P) cavity which comprises two parallel reflecting mirrors on either 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 cavity.


As illustrated to the left, 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 cavity length will correspond to a very precise pressure value.

 

 

 

 

 

 

 

 


 

 

 

Technical Datasheet and pdf


   FOP-MIV       FOP-M260   


Published papers   Published papers about products and technology

 

Published papers  FISO Medical promotional brochure

 


Meet us

 

 

 

 

 

Contact one of our application engineers