0

Full Content is available to subscribers

Subscribe/Learn More  >

Microwave Ablation: A Potential Minimally Invasive Solution for Gastric Motility Disorders

[+] Author Affiliations
Jacob Hardenburger, Punit Prakash

Kansas State University, Manhattan, KS

Timothy R. Angeli, Leo K. Cheng

University of Auckland, Auckland, New Zealand

Paper No. DMD2019-3293, pp. V001T06A010; 6 pages
doi:10.1115/DMD2019-3293
From:
  • 2019 Design of Medical Devices Conference
  • 2019 Design of Medical Devices Conference
  • Minneapolis, Minnesota, USA, April 15–18, 2019
  • ISBN: 978-0-7918-4103-7
  • Copyright © 2019 by ASME

abstract

Many gastric motility disorders, including gastroparesis, are caused by dysrhythmias occurring in the stomach musculature. Microwave ablation (MWA) offers potential as a minimally invasive endoscopic approach for targeted thermal destruction of the gastric musculature to disrupt irregular electrical rhythm within the stomach wall. An experimental study was conducted in a gel phantom to analyze the transient heating profile of a water-cooled 2.45 GHz MWA antenna enclosed within a PET balloon. Fiber-optic temperature sensors were used to collect temperature data at distances 1.5–7.5 mm from the balloon surface. Ablation profiles were also characterized in ex vivo porcine skeletal muscle. With 20 W applied power and cooling water temperature of 5 °C, temperature measured at 3.5 mm from the balloon surface exceeded the temperature at 1.5 mm from the balloon surface by 3 °C. In ex vivo tissue, for 40 W applied power, tissue within 2 mm of the balloon surface remained unablated. With adequate cooling and power, it may be feasible to thermally spare tissue within 2 mm of the MWA balloon applicator.

Copyright © 2019 by ASME

Figures

Tables

Interactive Graphics

Video

Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In