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A kind of conductive hydrogel and conductive hydrogel coil and preparation method thereof

A technology of conductive hydrogel and roll material, which is applied in electrotherapy, conductive adhesives, electrodes, etc., can solve the problems of limited use of conductive hydrogel, difficulty in unification, etc., and achieve not easy yellowing, good stability, The effect of good electrical conductivity

Active Publication Date: 2018-02-23
康柏医疗器械(惠州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the conductivity, biocompatibility, viscosity, mechanical strength and stability of the existing polyelectrolyte conductive hydrogels, especially the viscosity and conductivity in a humid environment, are difficult to unify with each other to achieve the best performance. Excellent effect, which limits the use of conductive hydrogels

Method used

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  • A kind of conductive hydrogel and conductive hydrogel coil and preparation method thereof
  • A kind of conductive hydrogel and conductive hydrogel coil and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A kind of conductive hydrogel, its raw material includes N-vinylpyrrolidone (NVP) 7.25%, acryloyloxyethyltrimethylammonium chloride (DAC, Ciba) 2%, 3-sulfopropylacrylic acid by weight percent Potassium salt (SPA, Raschig, Germany) 20%, Acrylic acid 5%, Glycerin 25%, Polypropylene alcohol 6005%, Polypropylene sodium (PAAS) 2%, Deionized water 30%, Potassium chloride (KCl) 3%, Photoinitiator 0.25% (specifically including Irgacure184 0.1% and Darocur 1173 0.15%) and crosslinker (SR-252) 0.5%.

Embodiment 2

[0026] A kind of conductive hydrogel, its raw material includes N-vinylpyrrolidone (NVP) 7.25%, 3-sulfopropylacrylic acid potassium salt (SPA, Raschig, Germany) 20%, acrylic acid 7%, glycerol 28% by weight percentage , polyacrylamide (PMA) 2.2%, deionized water 30%, mixture of potassium chloride and sodium chloride 5%, photoinitiator 0.05% (specifically including Irgacure184 0.01% and Darocur 1173 0.04%) and crosslinking agent ( SR-252) 0.5%.

Embodiment 3

[0028] A kind of conductive hydrogel, its raw material includes N-vinylpyrrolidone (NVP) 7.25%, acryloyloxyethyl trimethylammonium chloride (DAC, Ciba)) 2%, 3-sulfopropyl Acrylic acid potassium salt (SPA, Raschig, Germany) 20%, acrylic acid 5%, gelatin 30%, polyvinylpyrrolidone (PVP) 2%, deionized water 30%, potassium chloride (KCl) 3%, photoinitiator 0.25% (specifically including Irgacure184 0.10% and Darocur 1173 0.15%) and crosslinker (SR-252) 0.5%.

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Abstract

The invention relates to the technical field of medical polymer materials, in particular to a conductive hydrogel, which comprises 20%-60% of a polymer, 20%-40% of deionized water, 2%-7% of an electrolyte, and a water-retaining agent. 10%-30%, tackifier 1%-5%, initiator 0.03%-0.2% and cross-linking agent 0.03%-1.5%; wherein the polymer comprises N-vinylpyrrolidone 2% by total weight percentage ‑15%, Acryloyloxyethyltrimethylammonium Chloride 0‑10%, 3‑Sulfopropyl Acrylic Acid Potassium Salt 5%‑25%, Acrylic Acid 3%‑15%, and N,N‑Dimethacrylamide 0%‑10%, and the conductive hydrogel sheet made of the above formula, which has good conductivity when used; has good adhesion to the skin and no or less pain to peel off; has good skin Biocompatibility; it has good stability when used, and it is not easy to yellow; it can also maintain a certain viscosity in the environment of water, humidity or blood. In addition, the present invention also relates to a method for making the conductive hydrogel coil.

Description

technical field [0001] The invention relates to the technical field of medical polymer materials, in particular to a conductive hydrogel, a conductive hydrogel coil and a preparation method thereof. Background technique [0002] Hydrogel (Hydrogel) is a gel with water as the dispersion medium. It introduces a part of hydrophobic groups and hydrophilic groups into water-soluble polymers with a network crosslinked structure. The hydrophilic groups combine with water molecules to connect water molecules. In the interior of the network, the cross-linked polymer formed by the hydrophobic group swelling with water is a kind of polymer with a three-dimensional network structure, which is soft, can absorb a large amount of water in water and swell, and can continue to maintain its original shape after swelling. The original structure is not dissolved. Among them, conductive hydrogel is a kind of hydrogel, which combines the dual characteristics of hydrogel and conductive material, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/38C08F226/10C08F220/34C08F220/06C08F2/48C08J3/075C08K3/16A61K50/00
Inventor 翟斌
Owner 康柏医疗器械(惠州)有限公司
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