Current Myoprosthetic Development at The Hugh MacMillan Medical Centre

M. MIFSUD, E.ENGT, H. R. GALWAY, BA, MD,AND M. MILNER, PHD, P.ENC**Toronto, Ontario


Four new devices augment the fitting of myoelectrically operated upper-limb prostheses:

  1. a miniature data-acquisition device (DAD) to record both the number of open and close events and the cumulative event duration. DAD can be placed within the prosthesis for objective collection of information regarding prosthesis use during the amputee's normal daily activities.
  2. a self-adaptive myoelectric processor. A three-state system facilitates the fitting and training process, optimizes the calibration settings as required, motivates prosthesis use through immediate operation and minimizes health-care cost and disrupted schedules for recalibration purposes.
  3. a microcomputer-aided myoelectric-control assessment program for routine clinical use. It objectively measures in the clinic amputee responses to a visual image while the wearer operates the prescribed myoelectric prosthesis.
  4. a microcomputer-based device to augment the process of identifying suitable muscle-control sites. Graphic and numeric display of the myoelectric voltage-signal levels from up to two separate muscle groups is complemented with the display of previous results obtained while mapping the muscle bulk area.

**The Hugh MacMillan Medical Centre (OCCC), 350 Rumsey Road, Toronto, Ontario M4G 1 R8, Canada