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.