Skin Graft Preparation

Project Goals

From concept to proof-of-concept to finished product in 6 months for a device which harvests patient skin for treatment of aesthetic and medical disorders.

Sunrise Solution

  • Systems analysis, conceptual designs, proof of concept, architecture
  • Electronics, Electro-mechanical, and Electro-thermal design, implementation and verification
  • Controlled build of 15 units at Sunrise to support clinical studies
  • Designed for 6061-1 compliance, CPLD coding using IEC 62304 design process
  • Simple operation with play/pause buttons and timer

Design Notes:
  • Designed for 60601-1 compliance, CPLD coding using IEC 62304 design process
  • Use of ni-chrome wire heater for slim profile
  • Combined vacuum and low-wire-count electrical cable between tabletop control box and harvester
  • Accurate PID control; control safety with redundant sensors and override switches, vacuum-heater interlock to insure correct harvester placement
  • LED illumination of harvester site for monitoring
  • Simple operation with play/pause buttons and count down timer

Results

  • Clinical study units delivered to clinical sites on schedule
  • Incorporated accurate control of skin temperature and applied vacuum to generate microblisters while protecting patient from heating elements in a slim package
  • Acquired by KCI in 2013