FTT NIRS SENSOR

The device evaluates blood perfusion in transplant flaps during surgical procedures noninvasively.

  • Technology: Utilizes near-infrared spectroscopy (NIRS) to measure:
    • Oxygenated hemoglobin (O₂Hb): Reflects oxygen-carrying hemoglobin.
    • Deoxygenated hemoglobin (HHb): Represents hemoglobin without oxygen.
    • Tissue oxygenation (SO₂): Overall oxygen saturation in the tissue.

Key Features:

  • Dual light sources (780 nm, 850 nm) and dual photodetectors enable spatially resolved spectroscopy for depth-specific data.
  • Compact design with implantable silicone encapsulation minimizes invasiveness, allowing use in operating rooms (ORs) and intensive care units (ICUs).
  • Real-time data storage and analysis through an integrated computing module.

Core Technologies

Near-Infrared Spectroscopy (NIRS):

  • Exploits low absorption of near-infrared light in tissues for hemodynamic measurement.
  • Differentiates O₂Hb and HHb based on light absorption at 780 nm and 850 nm wavelengths.
  • Derives oxygenation (SO₂) as a key parameter for assessing perfusion.

Spatially Resolved Spectroscopy:

  • Incorporates dual-detector configuration to account for tissue light scattering.
  • Provides more accurate and robust local hemodynamic measurements.

Miniaturized Design:

  • Features compact circuits for reduced invasiveness and enhanced ease of use.
  • Encased in biocompatible silicone for durability, patient safety, and resistance to bodily fluids.

Data Collection and Processing

Data Acquisition Module:

  • Ensures reliable, stable signal capture with a medical-grade power supply.
  • Meets safety standards for OR and ICU environments.

Integrated Computing:

  • Real-time recording and processing of signals into numeric and graphical representations of O₂Hb, HHb, and SO₂.
  • Immediate data availability for clinical evaluation.
  • Supports wired connectivity (e.g., USB, Ethernet) for continuous monitoring and offline analysis.

Product Specifications

Optical Components:

  • Light sources: Near-infrared LEDs or laser diodes at 780 nm and 850 nm.
  • Photodetectors: Two detectors calibrated for spatial resolution.

Sensor Design:

  • Material: Biocompatible, implantable silicone jacket. Compact dimensions for easy placement and reduced interference during procedures.

Data Handling:

  • Medical-grade power supply ensures safe operation.
  • Integrated computing provides real-time data analysis and optional data export.

Clinical Applications

  • Primary Use: Monitoring flap viability and perfusion during reconstructive surgeries. Detects insufficient blood supply for timely interventions.
  • Output: Numeric and graphical displays of O₂Hb, HHb, and tissue oxygenation for evidence-based decisions.
  • Potential Utility: Applicable for other procedures requiring continuous hemodynamic monitoring.

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