This is a prototype of an essential tremor suppression device. I built it for a biomedical engineering design contest (which I won). Essential tremor is a neurological disease that causes uncontrollable shaking of the hands and arms. A surgical treatment does exist, but it involves implanting an electrode into the thalamus of the brain. Needless to say, not a surgery for everyone. For some, tremor is only temporary and they are not good candidates for the $25,000 operation.
This particular device uses dashpots to dampen out the high frequency tremor motion
(4 to 8 Hz) and allow the slower intended movements. Obviously this isn’t a complete solution since it only addresses tremor at the wrist. Check out the link to the presentation slides for more information.