Fiber Optic MicroCatheter Pressure Transducers for Physiology Lab

Fiber optic pressure measurement system designed for measuring blood pressure in very small vessels, isolated hearts and other applications where pressure measurement is required directly at the location of interest. The semi-disposable sensors are designed for multi-use applications in life-sciences and small animal research, with a robust construction and protected sensor tip. Sensors are factory pre-calibrated, with calibration information stored in the optical connector for automatic transfer to the signal conditioning system. Manufactured by Atico Export with a focus on precision, durability and consistent performance for physiological research and experimental laboratory use.

• Neuroscience research
• Intracranial pressure measurement
• Blast wave and impact trauma studies
• Cardiovascular research
• Left ventricular pressure measurement
• Arterial blood pressure measurement
• Venous blood pressure measurement
• Ocular pressure measurement
• Bladder and ureter pressure measurement
• Intradiscal pressure measurement
• Intramedullary pressure measurement
• MRI pressure gating applications

Pressure Sensing Principle :

• Uses a Fabry-Pérot etalon-based pressure sensing mechanism
• Sensing cavity is formed between a flexible membrane and the base of the sensor
• Applied pressure deflects the membrane and changes the cavity length
• Factory calibration associates each cavity length with a specific pressure value
• Signal conditioning determines cavity length with nanometer-level resolution
• Provides accurate and repeatable pressure measurements

System Requirements :

• Fiber optic signal conditioner
• Modular chassis for powering and interfacing signal conditioner modules
• Data acquisition and instrument control software
• Suitable optical pressure catheter

Signal Conditioner :

• RS-232/RS-485 digital output
• 0 to 5 V analog output
• Analog output cable with BNC connector
• Compatible with fiber optic pressure catheters
• Continuous optical sensing
• Built-in cooling fan for protection against overheating

Modular Chassis :

• Provides power to signal conditioner modules
• Provides digital data interface between signal conditioners and acquisition software
• Available in 2-channel and 5-channel configurations
• 2-channel configuration accommodates up to 2 signal conditioning modules
• 5-channel configuration accommodates up to 5 signal conditioning modules
• Chassis does not need to be fully populated
• Additional signal conditioners can be added up to the chassis capacity
• USB interface for computer data transfer
• Analog output available for connection to an independent data acquisition system
• Data sampling rate up to 15 kHz
• Computer data transfer through USB at up to 5 kHz
• Analog output data transfer at up to 15 kHz

Catheter Extension Cable :

• Provides remote connection of the sensor up to 3 meters from the chassis or signal conditioner

Accuracy :

• 2 mmHg or better for 300 mmHg range sensors
• 2 mmHg for other listed configurations

Calibration :

• Factory calibration
• No on-site calibration required

Coated Fiber Diameter :

• 300 µm
• 640 µm

Coating :

• Polyimide and nylon

Length :

• 1.2 meters
• 1.7 meters
• 10 meters

Measurement Media :

• Fluid or gas

Pressure Range :

• ±300 mmHg
• 0 to 10 bar

Resolution :

• Less than 0.1 mmHg
• Less than 0.3 mmHg

Sensitivity Thermal Effect :

• Less than 0.04%/°C
• Less than 0.05%/°C

Sensor Diameter :

• 300 µm
• 640 µm

Standard Bare Fiber Length :

• 20 cm
• 70 cm

Storage Temperature :

• –40 to +80°C
• –40 to +176°F

Tolerated Bend Radius :

• 10 mm
• 0.4 in

Uncoated Fiber Diameter :

• 260 µm
• 550 µm

Zero Thermal Effect :

• 0.2 mmHg/°C
• 0.4 mmHg/°C

• Fiber optic pressure measurement at the exact location of interest
• Suitable for very small vessels and isolated heart preparations
• Semi-disposable design for multi-use applications
• Robust sensor construction with protected tip
• Low-noise pressure measurement
• Accurate and repeatable measurements
• Sensor located at the tip of the fiber
• Factory pre-calibrated sensors
• No on-site recalibration required
• Calibration information stored on the optical connector
• Continuous sensing without reliance on pulsed light
• Available with standard and extended fiber lengths
• Suitable for fluid or gas pressure measurement