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CIRCA

Esophageal Temperature
Probe
Probe S-CATH

During therapeutic ablation procedures, the temperature of the esophagus can change rapidly. S-CATH provides faster and more accurate temperature detection for both HOT and COLD temperature changes. The probe deploys an array of 12 fully insulated, fast-response temperature sensors in a uniquely designed soft and flexible “S” shape that provides edge-to-edge coverage.

Characteristics

  • 12 sensors. Smart positioning
    12 fast-response temperature sensors, coated and electrically insulated in a soft and flexible “S” shape of exclusive design.
  • Edge-to-edge coverage
    The unique design deploys the sensor array across the length and width of the esophagus allowing for full coverage.
  • Designed for fast detection
    Data is displayed directly on the CIRCA monitor, updating 20 times per second, providing faster detection of esophageal temperature changes.
  • No bare metal
    12 temperature sensors are completely isolated with PEBAX, eliminating the possibility of RF interaction.
  • Key benefits
    • Response time
      • In an independent study of 198 applications on 10 patients, the S-CATH recognized an initial temperature increase of 0,2ºC, 17 seconds faster than a single sensor probe (1).
    • Edge-to-edge coverage
      • In the same study, S-CATH recorded a 40-fold temperature increase of >2,0°C. Single-sensor probes failed to detect 90% of those temperature increases (1).
    • RF antenna effect
      • The PEBAX coating electrically insulates the temperature sensors so there is no exposure of bare metal.
    • Lateral positioning problems
      • Linear and single-sensor temperature probes, no matter how fast, tend to be placed very laterally in the esophagus.
  • References
      • 1 Tschabrunn, CM, et al., Comparison between single and multi-sensor esophageal temperature probes during atrial fibrillation ablation: thermodynamic characteristics, Europace 2015 doi:10.1093/europace/euu356.

    2 Electrical and thermal effects of esophageal temperature probes in radiofrequency catheter ablation of atrial fibrillation: results of a computational modeling study; Pérez JJ, d'Avila A, Aryana A and Berjano E, ; doi: 10.1111/jce.12630.

Technical Specifications

General characteristics
Number of temperature sensors 12 (+1 400 series thermistor)
Form of the implemented matrix Flexible S shape places an array of 12 sensors throughout the esophagus
Temperature sensor type thermistor
Temperature measurement range 0ºC to 45 C
temperature accuracy ±0,3ºC from 25-45ºC
>± 0,4ºC from 0-24,9ºC
Probe diameter (OD) 10F/3,3mm
Usable length 65 cm (tip to connector housing)
Sensor band material Copper/Gold
Sensor band length 2,5 mm
Exposed metal (per sensor) None
Probe shaft material Polyurethane (barium loaded) with medical grade Pebax® coating
Radiopaque Yes
Mapping Electrodes Type Impedance
Material Gold
Quantity 4
Size 2,5 mm
Exposed metal (per electrode) 15,76 mm 2
Radiopaque Yes
Connector(s) Unidirectional connector to temperature cable, Unidirectional connector to mapping cable
ELECTRICAL SAFETY Complies with IEC 60601-1:2005 + A1:2012 when used with monitor and CIRCA scientific interconnect cable
# of styluses 1
Packaging unit 1pc/box shelf
Packaging Description Thermofrom tray with Tyvek cover
Sterilization Sterile (ethylene oxide)
Expiration Three years from the date of manufacture.