Ultrasonic distance detection for a closed-loop spinal cord stimulation system

E.A. Dijkstra; J. Holsheimer; Wouter Olthuis; Piet Bergveld

doi:10.1109/IEMBS.1997.758723

Ultrasonic distance detection for a closed-loop spinal cord stimulation system

E.A. Dijkstra, J. Holsheimer, Wouter Olthuis, Piet Bergveld

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

5 Citations (Scopus)

161 Downloads (Pure)

Abstract

When stimulating the spinal cord at a constant strength, the current density in the spinal cord and thus the effects on chronic, intractable pain and vascular insufficiency will change with body position, due to the varying separation of the spinal cord and the stimulating electrode. The current density in the spinal cord has to remain between the perception and discomfort threshold (stimulation window) for a good therapeutic effect, i.e. that the patient does not suffer from pain. The stimulation window is very small. In current SCS systems the stimulus applied to the electrode is set at a constant value. A major improvement could be achieved when the distance between stimulation electrode and spinal cord could be measured and used to control the stimulus amplitude in a closed-loop system. An ultrasonic piezoelectric transducer was chosen to measure the distance between the electrode and the spinal cord

Original language	Undefined
Title of host publication	Proceedings 19th annual International conference IEEE Eng. in Medical & Biological Society
Place of Publication	Chicago, USA
Publisher	IEEE
Pages	1954-1957
Number of pages	4
ISBN (Print)	CD-ROM 0-7803-4
DOIs	https://doi.org/10.1109/IEMBS.1997.758723
Publication status	Published - 30 Oct 1997
Event	19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 1997 - Chicago, United States Duration: 30 Oct 1997 → 2 Nov 1997 Conference number: 19

Publication series

Name
Publisher	IEEE
Volume	5

Conference

Conference	19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 1997
Abbreviated title	EMBC
Country/Territory	United States
City	Chicago
Period	30/10/97 → 2/11/97

Keywords

METIS-114290
IR-17395

Access to Document

10.1109/IEMBS.1997.758723

00758723

Cite this

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title = "Ultrasonic distance detection for a closed-loop spinal cord stimulation system",

abstract = "When stimulating the spinal cord at a constant strength, the current density in the spinal cord and thus the effects on chronic, intractable pain and vascular insufficiency will change with body position, due to the varying separation of the spinal cord and the stimulating electrode. The current density in the spinal cord has to remain between the perception and discomfort threshold (stimulation window) for a good therapeutic effect, i.e. that the patient does not suffer from pain. The stimulation window is very small. In current SCS systems the stimulus applied to the electrode is set at a constant value. A major improvement could be achieved when the distance between stimulation electrode and spinal cord could be measured and used to control the stimulus amplitude in a closed-loop system. An ultrasonic piezoelectric transducer was chosen to measure the distance between the electrode and the spinal cord",

keywords = "METIS-114290, IR-17395",

author = "E.A. Dijkstra and J. Holsheimer and Wouter Olthuis and Piet Bergveld",

year = "1997",

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language = "Undefined",

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publisher = "IEEE",

pages = "1954--1957",

booktitle = "Proceedings 19th annual International conference IEEE Eng. in Medical & Biological Society",

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note = "19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 1997 ; Conference date: 30-10-1997 Through 02-11-1997",

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Dijkstra, EA, Holsheimer, J, Olthuis, W & Bergveld, P 1997, Ultrasonic distance detection for a closed-loop spinal cord stimulation system. in Proceedings 19th annual International conference IEEE Eng. in Medical & Biological Society. IEEE, Chicago, USA, pp. 1954-1957, 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 1997, Chicago, Illinois, United States, 30/10/97. https://doi.org/10.1109/IEMBS.1997.758723

Ultrasonic distance detection for a closed-loop spinal cord stimulation system. / Dijkstra, E.A.; Holsheimer, J.; Olthuis, Wouter et al.
Proceedings 19th annual International conference IEEE Eng. in Medical & Biological Society. Chicago, USA: IEEE, 1997. p. 1954-1957.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

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N2 - When stimulating the spinal cord at a constant strength, the current density in the spinal cord and thus the effects on chronic, intractable pain and vascular insufficiency will change with body position, due to the varying separation of the spinal cord and the stimulating electrode. The current density in the spinal cord has to remain between the perception and discomfort threshold (stimulation window) for a good therapeutic effect, i.e. that the patient does not suffer from pain. The stimulation window is very small. In current SCS systems the stimulus applied to the electrode is set at a constant value. A major improvement could be achieved when the distance between stimulation electrode and spinal cord could be measured and used to control the stimulus amplitude in a closed-loop system. An ultrasonic piezoelectric transducer was chosen to measure the distance between the electrode and the spinal cord

AB - When stimulating the spinal cord at a constant strength, the current density in the spinal cord and thus the effects on chronic, intractable pain and vascular insufficiency will change with body position, due to the varying separation of the spinal cord and the stimulating electrode. The current density in the spinal cord has to remain between the perception and discomfort threshold (stimulation window) for a good therapeutic effect, i.e. that the patient does not suffer from pain. The stimulation window is very small. In current SCS systems the stimulus applied to the electrode is set at a constant value. A major improvement could be achieved when the distance between stimulation electrode and spinal cord could be measured and used to control the stimulus amplitude in a closed-loop system. An ultrasonic piezoelectric transducer was chosen to measure the distance between the electrode and the spinal cord

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