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Flexible fiber electrode coated with polyetheretherketone coating layer, preparation and application thereof

A polyether ether ketone and flexible fiber technology, applied in the field of flexible fiber electrodes, can solve the problems of complex preparation process and poor biocompatibility of flexible fiber electrodes, and achieve excellent biocompatibility, good flexibility, materials and preparation costs low effect

Active Publication Date: 2019-09-13
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the above defects or improvement needs of the prior art, the present invention provides a flexible fiber electrode coated with polyetheretherketone coating, its preparation and application, which is prefabricated by passing a flexible filamentary conductive material through polyetheretherketone In the through hole of the rod, the prefabricated rod and the flexible filamentary conductive material are co-drawn by adopting the method of thermal softening drawing to obtain a flexible filamentous conductive material as the core layer and polyether ether ketone as the coating layer. flexible fiber electrodes, thus solving the technical problems of complex preparation process and poor biocompatibility of existing implantable flexible fiber electrodes

Method used

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  • Flexible fiber electrode coated with polyetheretherketone coating layer, preparation and application thereof
  • Flexible fiber electrode coated with polyetheretherketone coating layer, preparation and application thereof
  • Flexible fiber electrode coated with polyetheretherketone coating layer, preparation and application thereof

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preparation example Construction

[0033] A method for preparing a flexible fiber electrode coated with polyetheretherketone provided by the invention comprises the following steps:

[0034] (1) Obtaining a polyether ether ketone preform containing through holes;

[0035] (2) Make the flexible filamentary conductive material pass through the through hole of the preform, and adopt the method of thermal softening drawing to implement co-drawing of the preform and the flexible fiber electrode to obtain a flexible filamentary conductive material It is a flexible fiber electrode coated with polyetheretherketone as the core layer.

[0036] In some embodiments, step (1) includes the following sub-steps:

[0037] (2-1) The polyetheretherketone raw material is made into a solid rod structure by hot pressing; here, the polyetheretherketone raw material can be polyether ether ketone particles or polyetheretherketone film.

[0038] (2-2) Piercing the solid rod obtained in the step (1-1) to obtain a polyetheretherketone p...

Embodiment 1

[0057] In this embodiment, a flexible fiber electrode coated with a polyetheretherketone coating with a coaxial structure is provided, which has flexibility, electrical conductivity, and biocompatibility. Wherein, the flexible filamentous conductive material of the flexible fiber electrode coated with polyetheretherketone coating, that is, the electrode material is 304 stainless steel filament, the diameter of which is 50 μm, and the thickness of the cladding is 125 μm.

[0058] This embodiment also provides the method for the above-mentioned flexible fiber electrode coated with polyetheretherketone coating, including: pre-treatment of materials, preparation of prefabricated rods and thermal drawing of fibers.

[0059] The pre-treatment of the material includes the following steps: (1) pass the metal wire through acetone, isopropanone, and deionized water in sequence to remove the stains on its surface, wind the processed metal wire on a coil and store it in a vacuum drying ove...

Embodiment 2

[0065] In this embodiment, a flexible fiber electrode coated with a polyetheretherketone coating with a coaxial structure is provided, which has flexibility, electrical conductivity, and biocompatibility.

[0066] Wherein, the electrode material of the flexible fiber electrode coated with polyetheretherketone coating is 304 stainless steel filament, the diameter of which is 300 μm, and the diameter of the cladding is 1750 μm.

[0067] The embodiment of the present invention also provides the flexible fiber electrode method coated with polyetheretherketone coating, including: pre-treatment of materials, preparation of prefabricated rods and hot drawing of fibers.

[0068] The pre-treatment of the material includes the following steps: (1) Pass the metal wire through acetone, isopropanone, and deionized water in order to remove the stains on its surface, wind the processed metal wire on a coil and store it in a vacuum drying oven to prevent (2) Pretreatment of thermoplastic spec...

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Abstract

The present invention belongs to the field of functional fibers and more particularly relates to a flexible fiber electrode coated with a polyetheretherketone (PEEK) coating layer, a preparation and an application thereof. Firstly, a through-hole-containing polyetheretherketone prefabricated rod is obtained; then a flexible filamentary conductive material passes through a through hole of the prefabricated rod, a thermal softening drawing method is used, and the prefabricated rod and the flexible filamentary conductive material are subjected to co-drawing to obtain the flexible fiber electrodeusing the flexible filamentary conductive material as a core layer and the polyetheretherketone as the coating layer. The provided flexible fiber electrode coated with the polyetheretherketone coatinglayer is prepared mainly by a thermal drawing technology, so that the prepared flexible fiber electrode has excellent biocompatibility of the PEEK material and also has good electrical and mechanicalproperties of metal materials. The obtained flexible fiber electrode has great prospects in the field of biomedicines, especially in research of biological probes.

Description

technical field [0001] The invention belongs to the field of functional fibers, and more specifically relates to a flexible fiber electrode coated with polyetheretherketone coating, its preparation and application. Background technique [0002] In clinical medicine, implanting electrodes at target positions in the human body has become an effective treatment method, such as implanting electrodes deep in the brain to treat Platinumson's disease, implanting a pacemaker in the heart to treat heart disease, etc. Some studies have shown that , Stimulating electrical signals to neurons in the legs can improve the movement disorders of the patients' lower limbs and help hemiplegic patients return to normal activities. However, one of the biggest difficulties at present is long-term implant reliability, effectiveness, and stability. For example, poor biocompatibility of nerve electrodes may damage multiple tissue parts, including capillary vessels, extracellular matrix, and cells. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N1/05
CPCA61N1/05
Inventor 陶光明李攀
Owner HUAZHONG UNIV OF SCI & TECH
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