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Implantable electrode

A technology of electrodes and implanted devices, applied in the field of implantable materials and devices, can solve problems such as very sensitive impedance changes

Inactive Publication Date: 2017-05-31
LUXEMBOURG INST OF SCI & TECH LIST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conducting polymers remain very sensitive to impedance changes caused by biofouling or material uptake in the brain's resident immune cells [3]

Method used

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Embodiment Construction

[0038] This section describes the present invention in more detail based on preferred embodiments and drawings. It should be understood that the technical features presented for a specific embodiment can be combined with features of other embodiments, unless otherwise specified. First, the materials and methods used to obtain the presented results are described.

[0039] Materials and methods

[0040] To simulate cell behavior in the presence of devices comprising a top layer, ie a cell contact layer comprising indium nitride InN material, different structures were synthesized on sapphire or silicon substrates by using chemical vapor deposition CVD. figure 1 The structures shown in a and 1b include a bottom insulating layer of sapphire that serves as a base for several layers forming electrodes. The top layer was the only layer that was in direct contact with the biological cells during the test. figure 1 a shows the cell contact top layer made of GaN, while figure 1 b sho...

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Abstract

According to the present invention, an implantable device comprising an electrode for carrying an electric signal to or from a biological cell or tissue provided. The electrode material is chosen to exhibit desirable properties in terms of electrical conductivity, biocompatibility and bio-fouling. The invention further provides implantable devices comprising such implantable electrodes.

Description

technical field [0001] The present invention relates to the field of implantable materials and devices. In particular, the present invention relates to electrodes for carrying electrical signals to and / or from biological cells or tissues in direct contact with the electrodes. Background technique [0002] Several materials and devices have been studied and proposed to simulate, probe or / and restore the activity of different biological tissues and cells. Biocompatible electrodes for cell stimulation or cell monitoring are still required as components of devices used as brain-mechanical interfaces. As an example, the first successful neuropathic-cochlear implant implemented in the early 1990s was a neural interface device that used an electrode array to stimulate the auditory nerve in the cochlea with electrical pulses. Electrical stimulation of peripheral nerves has garnered much interest from clinicians for treating pain, for restoring motor function, and for treating epil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L27/30A61L27/50A61N1/05
CPCA61L27/306A61L2430/32A61N1/37A61N1/05A61N1/0526A61N1/0534A61N1/3605A61N1/36125A61N1/36128A61L2400/02A61B5/24
Inventor D.勒诺布尔J-S.托曼V.帕利索
Owner LUXEMBOURG INST OF SCI & TECH LIST
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