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A new magnet system for ‘intravascular navigation’

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Abstract

Channels such as blood vessels may provide a valuable means of access to parts of the body otherwise inaccessible except by major surgery. The system described here uses the field gradient to a large, movable electromagnet to propel and guide a small permanent magnet through such channels. The permanent magnet may incorporate or tow any of a number of minute diagnostic or therapeutic devices. A flexible catheter may be attached to conduct fluids to or from the tip and to provide additional control.

Sommaire

Les vaisseaux sanguins se présentent comme des voies d’accès possibles à certaines parties du corps inaccessibles autrement que par une intervention chirurgicale importante. Le système décrit ici utilise le champ d’un grand électro-aimant convenablement orienté, guidant un petit aimant permanent, à travers les vaisseaux sanguines. L’aimant permanent peut être tracteur ou porteur d’un certain nombre d’éléments de diagnostic ou de thérapeutique. On peut y attacher un cathéter flexible qui facilite le guidage et permet l’injection de liquide.

Zusammenfassung

Kanäle wie die Blutgefäße können eine wertvolle Möglichkeit bieten, Körperteile zu erreichen, die sonst nur durch große Chirurgie zu erreichen sind. Das hier beschriebene System benutzt den Feldgradienten eines großen, geeignet befestigten Elektromagneten, un einen kleinen Dauermagneten duchr derartige Kanäle zu führen. Der Dauermagnet kann hinter sich (oder kann selbst eingebaut werden in) jede gewünschte Zahl kleinster diagnosticher oder therapeutischer Geräte tragen. Ein flexibler Katheter kann befestigt werden, wenn Flüssigkeiten an die Spitze geleitet werden sollen, und wenn zusätzliche Führung gewünscht ist.

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References

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Additional information

This study was supported in part by USPHS Grant No. N.B. 5046 and N.B. 06922.

which is supported by the U.S. Air Force Office of Scientific Research.

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Yodh, S.B., Pierce, N.T., Weggel, R.J. et al. A new magnet system for ‘intravascular navigation’. Med. & biol. Engng. 6, 143–147 (1968). https://doi.org/10.1007/BF02474267

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  • DOI: https://doi.org/10.1007/BF02474267

Keywords

Navigation