Towards the design and development of an active needle for therapeutic procedures

B. Konh, H. Lee, H. H. Lee, V. Zhao, V. P. Martin, P. Hutapea

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

The accuracy of many needle-based therapeutic procedures depends on the placement of the needle tip to desired locations. In many of these procedures, lack of actuation and dexterity of the device limits the surgeon's capability to compensate for the probable errors. To overcome these limitations shape memory alloy (SMA) wire actuators were attached to the needle body to provide contraction forces to bend the needle tip. In this paper a miniature prototype of a SMA activated needle was designed and developed. To obtain an enhanced deflection a flexure element was included in the design. A shape memory polymer (SMP) was used as the flexure component to provide dexterity and to electrically insulate the two segments of our needle. The SMP's properties to recover its initial shape, upon applying heat above its glass transition temperature, was utilized to bring the device back to its original configuration after each time of activation.

Original languageEnglish (US)
Title of host publication2015 41st Annual Northeast Biomedical Engineering Conference, NEBEC 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479983605
DOIs
StatePublished - Jun 2 2015
Event2015 41st Annual Northeast Biomedical Engineering Conference, NEBEC 2015 - Troy, United States
Duration: Apr 17 2015Apr 19 2015

Publication series

Name2015 41st Annual Northeast Biomedical Engineering Conference, NEBEC 2015

Other

Other2015 41st Annual Northeast Biomedical Engineering Conference, NEBEC 2015
Country/TerritoryUnited States
CityTroy
Period4/17/154/19/15

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Cancer Research
  • Cell Biology
  • Molecular Medicine
  • Biomedical Engineering
  • Control and Systems Engineering

Keywords

  • active needle
  • prototype design and development
  • shape memory alloy
  • shape memory polymer

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