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MRI-compatible implantable medical device, connecting method thereof and connecting mechanism

An implantable medical and device technology, applied in electrotherapy, connection insulation, treatment, etc., to achieve the effects of reliable connection, suppression of RF-induced temperature rise, and simple and fast installation and operation

Active Publication Date: 2015-05-13
TSINGHUA UNIV +1
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  • Abstract
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  • Claims
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Problems solved by technology

Therefore, MRI-compatible implantable medical devices in the prior art cannot effectively suppress the RF heating effect

Method used

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  • MRI-compatible implantable medical device, connecting method thereof and connecting mechanism
  • MRI-compatible implantable medical device, connecting method thereof and connecting mechanism
  • MRI-compatible implantable medical device, connecting method thereof and connecting mechanism

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Embodiment Construction

[0040] The MRI compatible implantable medical device provided by the present invention can be a cardiac pacemaker, defibrillator, deep brain electrical stimulator, spinal cord stimulator, vagus nerve stimulator, gastrointestinal stimulator or other similar implantable medical devices . The present invention is only described by taking the deep brain electrical stimulator as an example.

[0041] The MRI-compatible implantable medical devices provided by the present invention all have a split structure, and the outer surfaces of the extension wires and the electrode wires are covered with a conductive shielding layer. The purpose of the present invention is to adopt a connection mechanism to connect the extension wire and the conductive shielding layer covered by the outer surface of the electrode wire into one body, so as to ensure that the shielding layer has a good suppression effect on the RF heating temperature rise at the stimulating contact point. Furthermore, the presen...

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Abstract

The invention relates to an MRI-compatible split implantable medical device, a connecting method thereof and a connecting mechanism. The MRI-compatible split implantable medical device comprises a controller, an extension lead, an electrode lead, a connecting plug and the connecting mechanism, wherein a conductive shielding layer covers the outer surface of the extension lead; a conductive shielding layer covers the outer surface of the electrode lead; the connecting plug is used for connecting the extension lead with the electrode lead to form a connecting part; the connecting mechanism is made of shape memory alloy with bio-compatibility and used for electrically connecting the conductive shielding layers on the extension lead and electrode lead to guarantee the good inhibition effects of the shielding layers for the RF pyrogenic temperature rising at stimulated contacts.

Description

technical field [0001] The invention relates to the field of implantable medical devices, in particular to a connection mechanism and a connection method for a shielding layer of an MRI-compatible implantable medical device, and an MRI-compatible implantable medical device using the connection mechanism. 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 r...

Claims

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Application Information

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IPC IPC(8): A61N1/36A61N1/372A61N1/39A61N1/02H01R4/72
Inventor 姜长青莫晓龙董延涛李路明
Owner TSINGHUA UNIV
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