MEMS-based fiber optic pressure sensor (OPP-M200 PIT encapsulation)

The OpSens OPP-M is a MEMS-based fiber optic pressure sensor designed for detecting physiological pressure in people and animals.

These compact 0.20 mm OD sensors were designed for use in catheters, guidewires, and other devices that monitor physiological pressure in a minimally invasive manner. Thermal zero shift is minimized and moisture-induced drift is prevented because of its revolutionary, patented design.

Bare optical pressure sensors are available for companies who wish to construct their own unique in-house sensor packaging for their products.

OpSens’ new encapsulated OPP-M is integration ready. Encapsulation may be performed on the sensor tip and/or throughout the whole optical cable in a range of materials and sizes, depending on client-specific OEM applications.

Sensor modification to meet the demands of the client reduces R&D investment and integration requirements, lowering overall implementation and production process costs.

By combining Opsens WLPI signal conditioning technology (patent #7,259,862) and the advantages of fiber optic, the OpSens OPP-M meets the medical industry’s needs for long-term precision, reliability, low drift, and high-resolution pressure measurements in the presence of challenging MR, RF, EM, and microwave fields.

Key features

  • High precision
  • Unique sensor packaging
  • Catheter integration is simple
  • Extremely small
  • EMI/RFI resistance
  • MRI compatible and safe
  • Low cost


  • Catheter research and the development of new goods
  • Pressure monitoring during electrosurgery, MRI, and MW/RF operations
  • Requests for cardiac help
  • Design of guidewires (0.2, 5 mm OD model)
  • Physiological pressure monitoring:
    • Intraocular
    • Intravascular pressure
    • Intracranial pressure
    • Intrauterine Pressure  
    • Urodynamic
    • Pumping of the intra-aortic balloon 

PIT3 Encapsulation: MEMS-Based Fiber Optic Pressure Sensor

Image Credit: OpSens Medical


Source: OpSens Medical

Dimension (mm O.D.) 0,20 mm OD
Pressure range - 300 mmHg to + 350 mmHg (relative to atmospheric pressure)
Precision ± 1 mmHg
Resolution 0.2 mmHg
Moisture drift (typical) < 3 mmHg/28 days
Thermal coefficient of Zero (typical) 0.2 mmHg per °C
Proof pressure 4000 mmHg
Operating temperature 10 °C to 50 °C
Operating humidity range 0-100%
EM/RF/MR/MW susceptibility Complete immunity
Cable length 1.5 meters standard (Other lengths available)
Optical connector SC standard
Cable sheathing Customer specifications
Signal conditioner compatibility:best suited for MiniP OEM board, LifeSens and ProSens; also compatible with other Opsens WLPI signal.


NOTE: The FDA or any other relevant regulatory agency has not authorized the OPP-M product; however, it is designed to be integrated into customer host systems.

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