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An mri-compatible implantable electrode and method of manufacturing the same

A manufacturing method and implantable technology, applied in the direction of electrodes, internal electrodes, etc., can solve the problems of ohmic heating and high current density, and achieve the effects of eliminating heat generation, ensuring safety, and reducing RF induced current

Active Publication Date: 2017-09-22
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thus, the current density is higher in the tissue near the electrode contact, causing ohmic heating of the tissue

Method used

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  • An mri-compatible implantable electrode and method of manufacturing the same
  • An mri-compatible implantable electrode and method of manufacturing the same
  • An mri-compatible implantable electrode and method of manufacturing the same

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Embodiment Construction

[0026] The MRI compatible implantable electrode provided by the present invention and its manufacturing method will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] See Figure 1-2 , the first embodiment of the present invention provides an MRI compatible implantable electrode 10A, which includes: a flexible insulating conduit 12, the flexible insulating conduit 12 has a first end and a second end opposite to the first end end; at least one connector 14 is arranged on the outer surface of the first end of the flexible insulating conduit 12; at least one contact 16 is arranged on the outer surface of the second end of the flexible insulating conduit 12; and a helical wire 18 is arranged on the flexible insulating conduit 12 Inside the insulating conduit 12, and the helical wire 18 electrically connects the at least one contact 16 and at least one connector 14; further, the helical diameter of the helical wire ...

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Abstract

The invention relates to an implanted electrode compatible with MRI. The implanted electrode comprises a flexible insulated conduit, at least one contact, at least one connector and a spiral wire, wherein the flexible insulated conduit is provided with a first end and a second end opposite to the first end, the contacts are arranged on the outer surface of the first end of the flexible insulated conduit, the connectors are arranged on the outer surface of the second end of the flexible insulated conduit, the spiral wire is located in a cavity of the insulated conduit, or located in the wall of the insulated conduit or wound outside the conduit, and the contacts and the connectors are electrically connected through the spiral wire. The spiral diameter of at least one part of the spiral wire is larger than that of the other part of the spiral wire, so that the spiral wire is of a variable spiral diameter structure. The structure can change the electrical parameter performance, under an RF magnetic field of MRI, of the wire, and therefore the heating risk, caused by the RF magnetic field, on the contacts is reduced. The invention further relates to a manufacturing method for the implanted electrode compatible with MRI.

Description

technical field [0001] The invention relates to an implanted electrode for medical use and a manufacturing method thereof, in particular to an implanted electrode compatible with magnetic resonance imaging technology and a manufacturing method thereof. Background technique [0002] Compared with other imaging techniques (such as X-ray, CT, etc.), Magnetic Resonance Imaging (MRI) has significant advantages: MRI is clearer, has a high resolution for soft tissues, and There is no ionizing radiation damage to the human body. Therefore, magnetic resonance imaging technology is widely used in the clinical diagnosis of modern medicine. Today, it is estimated that at least 60 million cases worldwide are examined using MRI technology every year. [0003] When MRI works, three magnetic fields come into play. A high-intensity uniform static magnetic field B0, a gradient magnetic field that can be adjusted to any direction, and a radio frequency (RF) magnetic field for exciting nucle...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61N1/05
Inventor 姜长青莫晓龙李路明
Owner TSINGHUA UNIV
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