0
Design Innovation

Design and Construction of a Portable Transcranial Magnetic Stimulation (TMS) Apparatus for Migraine Treatment

[+] Author and Article Information
Renaud Charlet de Sauvage

 University of Bordeaux 1, IMS, Site ENSCPB, UMR CNRS 5218, 16, Avenue Pey Berland, 33607, Pessac Cedex, Francerenaud.charlet@ims-bordeaux.fr

Anne Beuter, Isabelle Lagroye, Bernard Veyret

 University of Bordeaux 1, IMS, Site ENSCPB, UMR CNRS 5218, 16, Avenue Pey Berland, 33607, Pessac Cedex, France

Department of ECT and rTMS (directed by J. Tignol), Psychiatric Hospital Charles Perrens, 121 rue de la Béchade, 33076 Bordeaux, France.

J. Med. Devices 4(1), 015002 (Feb 04, 2010) (6 pages) doi:10.1115/1.4000616 History: Received January 12, 2009; Revised April 10, 2009; Published February 04, 2010; Online February 04, 2010

A portable transcranial magnetic stimulation (TMS) prototype was designed and constructed for use in clinical trials to manage the pain associated with migraine with aura. In this system, a half-sinusoid (optionally a full-sine) TMS pulse is delivered into a circular coil. The pulse triggering is controlled by a switch in the coil handle. The pulse intensity and polarity are adjustable. Measured pulse parameters (period 202μs, maximum magnetic field at coil center 0.7T) corresponded to expected values and were in the range described for commercially available TMS apparatus. The maximum current density, computed 3 cm below the coil using a simple model of brain anatomy, was approximately 1.9 times the motor threshold, thus ensuring a sufficient margin for reaching the neuronal threshold in the target area.

FIGURES IN THIS ARTICLE
<>
Copyright © 2010 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 1

Portable TMS module, general view with power supply

Grahic Jump Location
Figure 2

Waveform of the coil current at 20% of maximum module output

Grahic Jump Location
Figure 3

(a) Schematic implantation of TMS module parts (top view) and (b) schematic layout of TMS module parts (front view)

Grahic Jump Location
Figure 4

A volunteer being tested for motor threshold with the portable TMS module

Tables

Errata

Discussions

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 Journal Articles
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