SU880410A1

SU880410A1 - Electrode

Info

Publication number: SU880410A1
Application number: SU792805796A
Authority: SU
Inventors: Тамара Илларионовна Терещук; Алексей Иванович Пудов
Original assignee: Ленинградский Научно-Исследовательский Институт По Болезням Уха, Горла, Носа И Речи
Priority date: 1979-07-24
Filing date: 1979-07-24
Publication date: 1981-11-15

Description

(54) ЭЛЕКТРОД(54) ELECTRODE

1one

Изобретение OTHJCKTCH к медицинской технике и может быть использовано в диагностических цел х,например , в отоларингологии.The invention of OTHJCKTCH is for medical technology and can be used for diagnostic purposes, for example, in otolaryngology.

Известен электрод, включающий контактную часть, соединенную с изолированным проводником, проход щим вдоль оси симметрии контактной части ГО.A known electrode includes a contact part connected to an insulated conductor that passes along the axis of symmetry of the contact part GO.

Однако известный электрод не обеспечивает необходимую точность измерений ввиду ненадежной фикЬации его в слуховом проходе.However, the known electrode does not provide the necessary accuracy of measurements due to its unreliable fixation in the ear canal.

Цель изобретени - повышение достоверности результатов исследований путем обеспечени надежной фиксации электрода в слуховом проходе.The purpose of the invention is to increase the reliability of research results by ensuring reliable electrode fixation in the ear canal.

Дл достижени поставленной цели в электроде, включающем контактную часть, соединенную с изолированным проводником, проход щим вдоль оси симметрии контактной части, контактна часть выполнена в виде разрезан:ного кольца,к одному концу которогоTo achieve this goal, in the electrode, which includes a contact part connected to an insulated conductor passing along the axis of symmetry of the contact part, the contact part is made in the form of a cut ring, to one end of which

перпендикул рно оси симметрии контактной части прикреплен жесткий металлический проводник, соедин ющий контактную часть с изрлированным проводником.Perpendicular to the axis of symmetry of the contact part, a rigid metal conductor is attached that connects the contact part with the diverted conductor.

На чертеже изображен электрод, общий вид.The drawing shows the electrode, the overall appearance.

Электрод имеет контактную часть 1, изолированный проводник 2 и жесткий металлический проводник 3.The electrode has a contact part 1, insulated conductor 2 and a rigid metal conductor 3.

Электрод используют следующим образом .The electrode is used as follows.

Claims

Otoscopy is preliminarily performed, lumps of sulfur are removed from the external auditory canal and impregnated with boric alcohol. An electrode is selected whose diameter allows to conduct it painlessly through the constriction (istmus) of the ear canal at the border of the cartilage and bone regions. Since the diameter of this part of the ear canal is larger than the diameter at the end of the bone section, i.e. close to the labeled membrane, accidental injury to the eardrum is excluded. In humans, the electrode is inserted into the external auditory canal under the control of vision. When using the ear funnel, the outer diameter of the narrow end should be equal to or slightly smaller than the diameter of the electrode ring. The electrode is pressed from the outside to the narrow end of the funnel, as if wearing it, and the electrode rod is passed through the funnel. 3. A funnel with an electrode is inserted into the cartilage of the auditory canal, and then the prod flips only the electrode into the bone section until it stops. This corresponds to approximately the first third of the bone region of the external auditory canal. After this, the earplug is removed from the ear canal. For the convenience of removing the funnel from the rod of the electrode, it can be made longitudinal to the slot. The introduction of the electrode into the auditory canal is provided by the presence of a rigid metal conductor 3. When inserted, it is necessary to pass the electrode through the narrowed part of the auditory canal. This is ensured by the fact that the ring is split, and its diameter is reduced when passing through the constriction. The introduction of an electrode to cats is performed under anesthesia using an ear-funnel of the appropriate size. The electrode is installed at the end of the bone section. The electrode makes it possible to increase the reliability of the results of research in order to ensure reliable fixation and contact with tissues on a large ring-shaped surface. The high ECOG amplitude and good reproducibility of all its components, obtained using this electrode, are the result of low electrode resistance due to the large contact surface and good electrode contact with the skin of the auditory canal, as well as the possibility of recording biopotentials not from a point source, but from a diffuse, representing a bulk fabric conductor along which, starting from the cochlea, current loops propagate in all directions and which lies around the circumference body surface leads. The invention Electrode, including the contact part connected to the insulated conductor, passes; {along the axis of symmetry of the contact part, characterized in that, in order to increase the reliability of the research results by ensuring reliable fixation of the electrode in the ear canal, the contact part is made in the form of a cut ring , to one end of which, perpendicular to the axis of symmetry of the contact part, a rigid metal conductor is connected, connecting the contact part with an insulated conductor. Sources of information taken into account in the examination I. Kratin Yu.G. and others. Technique and methods of electroencephalography. M.-L. Medicine, 1963, with. 166.