Tinkertron EMG Switch System


This uniquely designed, easy to use EMG switch device can be used as a caregiver alert, as a mouse click for computer access, as a switch input for speech generating devices, and as a control switch for power wheelchairs.
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If you haven’t been able to control switches because of ALS, spinal muscular atrophy, or spinal cord injury, this product can help you achieve independence.


It’s small but has rapid response rates at 10ms! This EMG Switch senses muscle activations and provides switch closure, threshold adjustment and comes with a standard 3.5mm connector to control switch activated devices. It also has a built-in digital signal processor that extracts intentional activations from weak muscles. 
  • Small 3.2”W x 1.3”H x 4.8”L enclosure — with rapid response rate 10ms!
  • Senses muscle activations and provides switch closure
  • Simple threshold adjustment
  • Provides standard 3.5mm connector to control switch activated devices
  • Built-in digital signal processing extracts intentional activations from weak muscles
  • Safe battery powered operation using standard external USB rechargeable battery packs
  • Built-in battery and charger
  • Compatible with readily available Ag/AgCl EMG patch electrodes
If you haven’t been able to control switches because of ALS, spinal muscular atrophy, or spinal cord injury, this product can help you achieve independence. Unlike other switches, the Tinkertron switch senses the tiny signals which activate the muscle. Use of the muscle control signals from your nervous system to your muscle makes the switch very easy to activate. The sensor is connected directly to the muscle site which makes attachment simple. The sensor does not depend on motion so it remains in the proper position even as you move around.

Any device or program that accepts switch input can be controlled by the EMG Switch. 
  •  power wheelchairs
  •  mobility devices
  •  environmental control devices
  •  email programs
  •  other computer programs
  •  scanning software (ie: EZ Keys)
  •  communication devices
Give your loved ones the freedom of independence.

The EMG Switch was developed for those with severely impaired mobility.

The Tinkertron EMG switch is especially useful to Amyotrophic Lateral Sclerosis (ALS) and Spinal Muscular Atrophy (SMA) patients, stroke victims, quadriplegics, those who suffer from various dystrophies, and anybody with limited muscle control who uses single- or dual-switch devices for scanning technology.

How does the EMG Switch work?


By using tiny electrical impulses from muscle contractions, the EMG Switch is designed to detect and convert electromyographic (EMG) signals which are present on the skin through muscle activity in your body into electrical information that is processed and input into a special switch closure used to output/activate your assistive technology/device such as a wheelchair, keyboard, etc. The input to the EMG switch comes from cloth electrodes, which provides contact to the tiny signals on the surface of the skin.  The EMG switch continuously monitors the signal under the electrodes, and when the signal level exceeds a user adjustable threshold, a relay is energized providing an isolated switch closure output.

Which muscles can control the EMG Switch?

Almost any controllable single muscle on the body can be used to control the Tinkertron EMG Switch, such as pectoral muscles, brow muscles, jaw muscles, cheek muscles, and others.

How much muscle strength is needed?

Minimal. Because the EMG Switch is very sensitive, even tiny muscle twitches provide enough electrical signal to be detected and used by the EMG Switch.

Will this work with my power wheelchair?

The EMG Switch can control most power wheelchairs that accept switch input.

What software do I need to install?

Your existing software and computer programs are all that is required, as long as they accept switch input.



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