Laser Doppler patient monitor MOORLAB-LDF

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Overview
The moorLAB-LDF is a laser Doppler blood flow and tissue temperature monitor designed for laboratory research and educational life-science applications. It uses digital signal processing (DSP) to deliver reproducible flux and concentration measurements and supports single- and dual-channel configurations for flexible experimental setups.

Key benefits

• Selectable single- or dual-channel operation for focused or comparative measurements
• Compact multi-channel stacking and USB connectivity for expanded setups
• High-contrast LCD for clear on-site data review
• Seamless integration with moorLAB-PC software for acquisition, storage and analysis

Intended use
For simultaneous measurement of microcirculatory blood flow (flux/concentration) and tissue temperature in research and educational settings. Not intended as a clinical medical device for diagnostic or therapeutic use on human patients.

Processing & performance
Advanced flux and concentration signal processing with software-selectable low-pass filter settings. Bandwidth supports 20 Hz–22 kHz signal processing; sampling rate 40 Hz for all parameters. Continuous operation mode with analogue BNC outputs for external recording.

Probes and application types

• Skin probes: twin- or multi-fibre designs; multi-fibre options provide averaged signals over larger tissue areas; typically fixed with holders or adhesive discs; combined Doppler and temperature probes available.
• Needle probes: for surface, intratissue or single-vessel measurements; suitable for restricted access tissues and micromanipulation; finer-gauge probes (VP4, VP4s) for deeper insertion.
• Low-profile probes: designed for limited access or to minimise pressure under dressings (examples: titanium disc, near-flat silicon probes).
• Single-fibre systems: master probe plus single-fibre tips for minimally invasive animal studies; tips can be trimmed or replaced.
• Example probe codes: LP1, LP1/7, LP1T, LP2, LP7A, LP12, LP14-CBF, LP4s, LP10M100ST, etc.

Cleaning and maintenance
Main unit: wipe with a cloth moistened with isopropanol or isopropanol/water mixture. Probes and connectors: wipe with isopropanol/isopropanol-water. Probe head and sleeving (excluding connector): washable under running water, clean with neutral or enzymatic detergent, or immerse in Cidex OPA up to 5 minutes (rinse after); maximum 5 immersion cycles. Probes are not suitable for sterilisation.

Typical applications & references

• Vascular and microcirculation research
• Neurological and cerebral blood-flow models (eg. MCAO)
• Dermal perfusion, flap monitoring, diabetic and inflammation studies
• Muscle and exercise physiology and preclinical research

Notes
Manufacturer may update specifications without notice. Probe selection and measurement parameters must be matched to the experimental protocol and tissue under study.

Technical specifications

• Analogue outputs: 0–5 V range; BNC connectors; LDF1: 2 outputs; LDF2: 4 outputs
• Dimensions (W×H×D): 235 × 80 × 200 mm
• Weight: 1.5 kg
• Electrical safety: Class I
• EMC: complies with EN 61326-1 (laboratory environments)
• Flux/concentration processing: bandwidth 20 Hz–22 kHz (±0.3 dB); software-selectable low-pass filters (standalone 15 kHz; PC options 3/15/22 kHz)
• Laser class: Class 1 (IEC 60825-1:2014)
• Laser: semiconductor diode, 785 nm ±10 nm; max output ≤1.3 mW per channel; beam divergence ≈26°
• Measured parameters: Flux 0–1000 PU (±10%); DC 0–1000 AU (±10%); Concentration 0–1000 AU (±10%); Temperature 5–50 °C (±0.5 °C)
• Sampling rate: 40 Hz (all parameters)
• Operation mode: continuous
• Measurement channels: moorLAB-LDF1: 1×flux, 1×DC/temperature (selectable); moorLAB-LDF2: 2×flux, 2×DC/temperature (selectable)
• Operating environment: indoor lab use, 15–30 °C, 75–106 kPa, humidity 0–75% non-condensing, max altitude 2000 m
• Power: AC 100–230 V, 50–60 Hz, 20 VA
• Storage/transport: 5–45 °C, 75–106 kPa, 0–75% RH non-condensing