MM513 Electrosurgical Insulation Defect Detector

MM513 Insulation Defect Tester

McGan Technology’s MM513 electrosurgical insulation defect detector is a compact, hand held, battery operated unit that tests the integrity, such as pinholes, cracks or defects, of the insulation of electrosurgical instrument in order to prevent inadvertent tissue burns which may occur during electrosurgical instrument procedures. The integrity of the insulation of electrosurgical instruments can occur over time, through normal surgical use, through the accidental contact with a sharp instrument or the rubbing of the insulation to the point of abrading it. The insulation failure provides an alternate pathway for the current to leave the instrument’s electrode usually beyond the sight of the surgeon which will result in the unintended tissue burn. Using an electrosurgical test equipment maintenance program can greatly reduce the number of these inadvertent burns during electrosurgical procedures.


  • Rechargeable
  • Lightweight portable unit
  • Reusable/interchangeable brush, ring or tri-hole electrode
  • Simple operation, easy to read LED indicators
  • Maintains applied test voltage with a constant current source
  • Full test current at low voltages
  • Limited output current for operational safety
  • LED displays alarm and battery charge

1/20/21: AAMI Introduced New Amendments to ANSI/AAMI ST79:2017/A2:2020


ANSI/AAMI ST79:2017, Comprehensive Guide to Steam Sterilization and Sterility Assurance in Healthcare Facilities

Amendment 2: Inspection of Insulated Instruments

Para: 8.2.1. a) Instrumentation intended for use with electric current should be tested for integrity each time it is processed in accordance with the instrument manufacturer’s written IFUs for inspection.

Purchase the Specification on the AAMI’s Website

Included Accessories

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Ring and Brush Electrode
Tri-Hole Electrode
Tri-Hole Electrode
Ground Wire & Alligator Clip
Ground Wire
Carry Case
Instructions for Use (IFU)
ac battery charger
AC Battery Charger
jump drive
Jump Drive

Optional Accessories

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Electrosurgical Test Instruments
Bi-Polar Test Kit
Wire Testing Unit
Wire Testing Unit



  • UL-CSA Listed Adapter
  • AC-DC Power Supply Adapter
  • Li Polymer Batteries


  • Weight: 1.1lbs (460grams)
  • Display: LED
  • Voltage: 0V to 5kV adjustable
  • Resolution: 10V
  • Current output: <0.1mA at probe
  • Short circuit: test current 0.1mA max
  • Power supply:1800 Ma Li-Polymer Battery
  • Power supply option: 5V external rechargeable battery with Adaptor
  • Dimensions: 8.27″ x 2.95″ x 1.38″ (210mm x 75mm x 35mm)
  • Alarm: audible and visual
  • 15 Hr operational time (up to 1000 instruments) 2 -4 hour recharging cycle

Typical Test Voltages

Brush and Ring LSE Electrode

  • Bip