Coil system for contactless geomagnetic navigation of magnets in a workspace

A technology of working space and geomagnetic navigation, applied in the direction of holding devices using magnetic attraction or thrust, surgical manipulators, electrical components, etc.

Inactive Publication Date: 2016-01-27
SIEMENS HEALTHCARE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It proves to be disadvantageous here that either the coil system or the patient or both must be moved mechanically in order to move the magnet

Method used

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  • Coil system for contactless geomagnetic navigation of magnets in a workspace
  • Coil system for contactless geomagnetic navigation of magnets in a workspace
  • Coil system for contactless geomagnetic navigation of magnets in a workspace

Examples

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Embodiment Construction

[0029] The invention is explained below in terms of a medical device for endoscopic examination of an organ of a patient. The medical device comprises a coil system which is designed, in particular, similarly to the coil system of document WO 2006 / 092421 A1. The coil system comprises 14 individually controllable coils for generating the corresponding magnetic fields. In this case, the individual coils are designed such that the magnetic fields or field gradients of the respective coils are not concentrated at one or more spatial locations in the working space specified by the coils. Other coil systems can also be used if necessary, a minimum of eight coils should be used so that the magnetic degrees of freedom can be controlled independently of one another. Although the coil system used in the embodiment described below has the same structure as the coil system of document WO2006 / 092421A1, it differs in the control of the electric current of each coil.

[0030] In the embodi...

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Abstract

The invention relates to a coil system for contactless geomagnetic navigation of a magnet (1) in a working space, wherein the coil system has a plurality of coils and a current control for controlling the corresponding currents in the plurality of coils device. In this case, the current control device is designed such that, for navigating the magnet ( 1 ) in the working space towards a variably predeterminable position (P), one of the plurality of coils is The current is adjusted such that the convex environment (?????????????????????????????) around the predefinable position (P) generated by the current The magnet (1 ) the magnetic forces (F1, F2, F3, F4) point to the environment ( ). The coil system according to the invention has the advantage that a movement of the magnet to a spatial position is possible without a mechanical movement of the coil system and without a positioning system for determining the position of the magnet. The coil system is used in particular in medical devices in which a magnet in the form of a probe is moved in the patient's body. In this case, rapid navigation of the probe in the patient's body can be achieved without mechanical movement of the patient bed or the coil system.

Description

technical field [0001] The present invention relates to coil systems and methods for contactless geomagnetic navigation of magnets in a workspace. Background technique [0002] A coil system for contactless geomagnetic navigation of a magnet utilizes multiple coils to generate a magnetic field that interacts with the magnet, thereby generating magnetic forces and torques that cause the magnet to move. In this case, the magnetic forces and torques acting on the magnets can be suitably adjusted by corresponding currents in the individual coils of the coil system. [0003] In particular, coil systems of the above type are used in the medical field. Here, the patient is examined with magnets in the working space of the coil system. In this case, the working space is accessible from the outside and in this space the magnetic force of the coil system has a sufficient effect on the magnet. To carry out the examination, the magnet located in the patient and the part of the patien...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N15/00
CPCA61B34/70A61B34/73
Inventor A.祖洛斯基J.赖因施克
Owner SIEMENS HEALTHCARE GMBH
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