Posted in | Pressure Sensors

OPP-M200 (PIT Encapsulation) - MEMS-Based Fiber Optic Pressure Sensor

The OpSens OPP-M is a MEMS-based fiber optic pressure sensor developed for measuring physiological pressure in humans and animals.

These small 0.20 mm OD sensors have been developed for use in catheters, guidewires, and other devices that allow for the minimally invasive detection of physiological pressure. With its innovative, patented design, thermal zero shift is reduced and moisture-induced drift is eliminated.

For companies that want to create their own customized in-house sensor packaging for their products, bare optical pressure sensors are available.

Integration is available for OpSens' new encapsulated OPP-M. According to client-specific OEM applications, the encapsulation can be carried out on the sensor tip and/or along the whole optical cable in a variety of materials and sizes.

The sensor customization for the customer's specific needs lowers R&D investment and integration requirements, which lowers total implementation and manufacturing process costs.

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

Key Features

  • High fidelity
  • Ultra miniature
  • Low cost
  • Simple catheter integration
  • Immunity to EMI/RFI
  • Specialized sensor packing
  • Compatible and safe for MRI


  • Pressure assessment during electrosurgery, MRI, and MW/RF-related procedures
  • Guidewires design (0.2, 5 mm OD model)
  • Research on catheters and the creation of new products
  • Applications for cardiac assistance
  • Monitoring of physiological pressures: 
    • Intraocular
    • Intracranial pressure
    • Intravascular pressure
    • Intrauterine pressure
    • Intra-aortic balloon pumping
    • Urodynamic

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 OPP-M product is not FDA — or other relevant regulatory body — approved; however, it is intended to be incorporated into customer host systems.

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