Multi-function control system for an artificial upper-extremity prosthesis for above-elbow amputees
US4030141A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 9, 1976 |
| Grant date | Jun 21, 1977 |
| Priority date | — |
| Expiry date | Feb 9, 1996 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2002/704
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
This invention relates to an improved EMG-based method for actuating a prosthetic appliance wherein a single pair of electrodes may be used to actuate several artificial limb movements by way of sampling and repeatedly resampling substantially the entire time function of the myoelectric signal as it appears on the limb stump over a period so short that the signal remains quasi-stationary, comparing a minimum number of parameters of such signals with a range of values of these same parameters stored within the data bank of a microcomputer, and actuating one or more functions of a prosthetic appliance whenever the current data for the sampled parameters all falls within a preselected domain chosen on the basis of the historical data. This invention also encompasses the apparatus for using the EMG signals developed by the patient in the stump for controlling the movements of a prosthetic appliance which comprise means connected to process the EMG signals so as to differentiate between the various functions to be performed thereby based upon a minimum number of parameters of said signals, means for storing historical data concerning the range of values said parameters vary over for eac…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.