Performance optimization of ultrasonic needle actuating device for insertion operation into tissue mimics

Xiaochun Liao, Muhammad Sadiq, Yang Kuang, George Corner, Sandy Cochran, Zhihong Huang

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

    5 Citations (Scopus)


    Needle insertion with ultrasound actuation has been proven as an effective way to reduce the penetration force and needle deflection within soft tissue, facilitating operational manoeuverability and targeting accuracy in cancer biopsy and regional anaesthesia. In such percutaneous procedures, loading conditions from adjacent soft tissue alter the needle transducer's impedance and cause deterioration of its vibration performance. In this paper, we report the needle transducer's structure and working principle; we investigate the loading effects from tissue mimics on the transducer's resonant impedance and vibration performance; and we show how to enhance the needle transducer's vibration performance through optimization of geometrical dimensions and the electrical driving method. Structural optimization was carried out with different transversal dimensions of the needle. Electrical driving optimization was done by tracking the working resonant frequency and stabilizing the driving signal during operation. Experimental trials confirmed a force reduction of 70.2% with the structural optimization and 73.7% with the electrical driving optimization for the insertion operation into gelatin phantom, compared with a static needle.

    Original languageEnglish
    Title of host publication2014 IEEE International Ultrasonics Symposium, IUS
    PublisherIEEE Computer Society
    Number of pages4
    ISBN (Print)9781479970490
    Publication statusPublished - 20 Oct 2014
    Event2014 IEEE International Ultrasonics Symposium - Chicago, United States
    Duration: 3 Sept 20146 Sept 2014


    Conference2014 IEEE International Ultrasonics Symposium
    Abbreviated titleIUS 2014
    Country/TerritoryUnited States
    Internet address


    • medical ultrasonic needle transducer
    • needle intervention
    • numerical analysis
    • performance optimization

    ASJC Scopus subject areas

    • Acoustics and Ultrasonics


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