T-2 Image with annotations

geko™ T-2

The wrist-watch sized geko™ device is a disposable, internally battery powered, neuromuscular electrostimulation unit. It is an integrated device and there are no accessories required for its operation. Its intended use is:

• Increasing local blood circulation
• Immediate post-surgical stimulation of the calf muscles to prevent venous thrombosis




product name geko
model reference T-2
product type powered muscle stimulator
class BF (The entire device is considered to be a patient applied part)
dimensions 186mm x 31mm x 11mm
weight 10g (geko™ device only)
power source internally powered equipment, battery not replaceable
battery primary lithium coin cell, removable for disposal

continuous operation - equipment not suitable for use in the presence of flammable anaesthetic mixture with air or with oxygen or nitrous oxide

stimulation modes 7 (selectable pulse widths)
pulse current 27mA (±15%) constant current, compliance to 80v
load impedance 200Ω to 3kΩ for 27mA output
pulse voltage set by current and load
pulses width
(200Ω to 10kΩ)
(200Ω to 5KΩ) 70, 100, 140, 200, 280, 400 µs
(open circuit ±5% +70µs)
repetition rate 1Hz (±5%)
maximum charge 20µC per pulse
net charge output zero per cycle
output coupling ceramic capacitor






1397T-1 spec_wave_L


1395T-1 spec_output_L



current rms (500Ω) 1mA rms maximum
voltage rms (500Ω) 0.5V rms maximum
operating time 24 hour duration (maximum 30 hours)
indicator display green LED, flashing
fault indication the stimulator device will automatically switch off for over current, under current, low battery voltage or end of 30 hour run time
materials soft moulding: TPE
Hydrogel cover: PET (Mylar) polyethylene terephthalate
standards IEC60601-1 (1996)
IEC60601-2-10 (2001)
IEC60601-1-2 (2004)
ISO 10993


Operating conditions:

temperature range 10°C to 30°C
humidity range 10% to 80% non-condensing


Storage conditions (in original packaging):

temperature range -10ºC to 30ºC
humidity range 10% to 80% non-condensing
shelf-life see expiry date on pouch label


24 months storage before use- see expiry date on pouch label