INJECTABLE HYDROGEL-FORMING POLYMER SOLUTION FOR RELIABLE EEG MONITORING AND EASY SCALP CLEANING

• Main Authors: MAGALHAES DUQUE DA FONSECA JOSE CARLOS, OLIVEIRA MARTINS ANA CRISTINA, FIEDLER PATRIQUE, HAUEISEN JANS, TEIXEIRA BATISTA PEDROSA PAULO EDUARDO
• Format: Patent
• Language: Chinese; English
• Published: 03.05.2019
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; DIAGNOSIS; GENERAL PROCESSES OF COMPOUNDING; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; MEDICAL OR VETERINARY SCIENCE; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; SURGERY; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

An injectable composition is described, which is capable of forming an hydrogel for electroencephalography (EEG) recording. The obtained hydrogel and method for its production is also an object of theinvention, as well as the use of the injectable composition for EEG recording. The injectable composition comprises: natural or synthetic polymers, preferably alginate; a polymerization initiation system or a cross-linking agent, preferably calcium salts; and at least one ionized salt. The injectable composition can be applied into the electrode cavities of common commercial EEG caps and forms asolid hydrogel shortly after application. When the cap is taken off, the hydrogel either remains inside the electrode cavities, or it breaks into parts that are easily removed from the hair with a comb. It can thus be handled and applied just like any other commercial electrolytic gel, but allows a faster and easier cleaning, it reduces movement artefacts and also the risks of electrodes short-circuiting due to gel running