Four Interesting Articles
From: Medical Design Briefs - June 2011

3D Data Acquisition Delivers Orthopedics and Prosthetics Solutions
http://www.medicaldesignbriefs.com/component/content/article/10225

Epiretinal Prosthesis Surgically Implanted in the Eye
  A miniature video camera housed in a pair of glasses captures a scene and
  relays the information to a receiver in the implant. 
Read more at:
http://www.medicaldesignbriefs.com/component/content/article/10237

Wearable, Artificially Intelligent, Bionic Device
  A battery-powered exoskeleton helps paraplegics stand and walk in a
  straight line, using a gesture-based human-machine interface. 
Read more at:
http://www.medicaldesignbriefs.com/component/content/article/10235

Experimental Walking Assist Device With Body Weight Support System
  This technology is designed for users who, though capable of walking on
  their own, would benefit from a reduction of load on their leg muscles and
  joints. 
Read more at:
http://www.medicaldesignbriefs.com/component/content/article/10233