Characteristics of an improved magnetic-implant guidance system

R. G MCNEIL; Rogers C Ritter; Michael A Lawson; Bert Wang; George T Gillies; K. G WIKA; Elizabeth G Quate; Matthew A Howard III; M Sean Grady

doi:10.1109/10.398641

Journal article

Characteristics of an improved magnetic-implant guidance system

R. G MCNEIL, Rogers C Ritter, Michael A Lawson, Bert Wang, George T Gillies, K. G WIKA, Elizabeth G Quate, Matthew A Howard III and M Sean Grady

IEEE transactions on biomedical engineering, Vol.42(8), pp.802-808

1995

DOI: 10.1109/10.398641

PMID: 7642194

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Abstract

The previous companion paper (see ibid., vol. 42, no. 8, p.793, 1995) described the motivation, design, and early experiments of a Magnetic Stereotaxis System. The part of the system considered in these papers is a helmet with a roughly cubic array of six superconducting coils used to apply force on small permanent magnet pellets in brain and in brain phantom material. This apparatus will be used to deliver drugs and other therapies directly into deep brain tissues, under control of a computer and fluoroscopic imaging system. Here, the authors analyze the general stability problems of controlling the currents in the coils for impulsive stepwise motion of the pellet, subject to quench avoidance in the superconducting coils, and in the face of Earnshaw's theorem governing stability in static magnetic fields. The authors also describe solutions that have been found to the primary difficulties limiting controlled pellet motion in the studies presented in the companion paper.

Neurosurgery

Biological and medical sciences

Medical sciences

Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases

Skull, brain, vascular surgery

Details

Title: Subtitle: Characteristics of an improved magnetic-implant guidance system
Creators: R. G MCNEIL - Stereotaxis Inc., Menlo Park CA 94025, United States
Rogers C Ritter - Stereotaxis Inc., Menlo Park CA 94025, United States
Michael A Lawson - Stereotaxis Inc., Menlo Park CA 94025, United States
Bert Wang - Stereotaxis Inc., Menlo Park CA 94025, United States
George T Gillies - Stereotaxis Inc., Menlo Park CA 94025, United States
K. G WIKA - Stereotaxis Inc., Menlo Park CA 94025, United States
Elizabeth G Quate - Stereotaxis Inc., Menlo Park CA 94025, United States
Matthew A Howard III - Stereotaxis Inc., Menlo Park CA 94025, United States
M Sean Grady - Stereotaxis Inc., Menlo Park CA 94025, United States
Resource Type: Journal article
Publication Details: IEEE transactions on biomedical engineering, Vol.42(8), pp.802-808
Publisher: Institute of Electrical and Electronics Engineers; New York, NY
DOI: 10.1109/10.398641
PMID: 7642194
ISSN: 0018-9294
eISSN: 1558-2531
Language: English
Date published: 1995
Academic Unit: Neurology; Iowa Neuroscience Institute; Neurosurgery; Otolaryngology
Record Identifier: 9984020769802771

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