Thermal modelling of shape-memory alloy fixator for minimal-access surgery

C. Song, T. G. Frank, P. A. Campbell, A. Cuschieri

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)


Shape Memory Alloy has been recently used for tissue fixation in minimal access surgery. The tissue closure is achieved by inserting the SMA fixator across the tissue join line. An electric current is then passed through the fixator which heats it and causes the fixator to its predefined shape. In design of the fixator, the main criterion has been to achieve full closure of the device while minimising collateral thermal damage to the surrounding tissue. Thermal analysis of the fixator and surrounding tissues has been conducted to predict the 3D spatial and temporal temperature distribution. Finite element method was used to model the heat transfer between the fixator and the surrounding tissue. The analysis results show that the heating effect within the tissues is confined to a layer of 1.0 mm thick next to the fixator.

Original languageEnglish
Pages (from-to)53-56
Number of pages4
JournalMaterials Science Forum
Publication statusPublished - 2002
EventProceedings of the International Conference on Shape Memory and Superelastic Technologies and Shape Memory Materials (SMST-SMM 2001) - Kumning, China
Duration: 2 Sept 20016 Sept 2001


  • Finite Element Method
  • Minimal-Access Surgery
  • Shape-Memory Alloy
  • Thermal Analysis

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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