CN2043111U

CN2043111U - Adjustable combination electrode hat for electroencephalograph

Info

Publication number: CN2043111U
Application number: CN 89200001
Authority: CN
Inventors: 段扬
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-01-03
Filing date: 1989-01-03
Publication date: 1989-08-23

Abstract

The utility model discloses an adjustable combination electrode hat for electroencephalographs, belonging to an accessory device of an electroencephalograph recorder. Base on conditions that the international electrode mounting method and the electrode mounting method have to extract brain electrical signals, the structure of the utility model is simplified, the cost is lowered and the operation is convenient. Seven (five or six) plastic strips, a fastening bolt, a connecting buckle are used for connecting the helmet shaped electrode hat. A corresponding position of the center groove of the plastic strips is provided with a screw electrode. The size and the tightness of the helmet shaped electrode hat can be adjusted. The position of the screw electrode can be adjusted. Proved by clinical trial, cooperated with an existing electroencephalograph recorder, the adjustable combination electrode hat is easy and safe in use.

Description

Adjustable combination electrode hat for electroencephalograph

This utility model is a kind of corollary apparatus of EEG(electroencephalography) instrument.

The history of EEG (electrocardiogram) examination surplus the research and development existing so far 100 year, the EEG(electroencephalography) instrument has become big-and-middle-sized hospital imperative equipment.

The electric conductor that invests when electroencephalograph is used to enroll brain electrical acti on the scalp relevant position is called electrode.The EEG electrode of always using till today is equipped with many kinds of methods, and a kind of conventional common electrode method of using of 20-23 left and right sides scalp electrode and present each hospital that adopts for the multi-electrode method is promptly normal generally adopts about 11-13.The electrode style that adopts is a lot; Promptly penetrate in the scalp as stylus with the acicular electrode of similar acupuncture; The adhesion electrode is a kind of silvery patelliform electrode, sticks on the scalp by white clay cream, and reuse 5% collodion or paraffin wax are fixed, and are applicable to coma patient; Nasopharyngeal electrode is a kind of length and curved electrode inserts in the nostril, will anaesthetize nasal cavity with anaesthetic in advance; Sphenoidal electrode is a minute hand shape electrode, time spent penetrates bilateral lower jaw part and the most frequently used silver-colored pipe electrode, and this electrode is a silver medal pipe contact scalp, and wraps the silver plate end with Cotton Gossypii, gauze, opposite side has plastics to hold up supporting role, soaks to guarantee conduction good with preceding with normal saline.Except that belonging to the specific use electrode, nasopharyngeal electrode and sphenoidal electrode (can't replace).All the other several electrodes all exist installs complexity, many shortcomings such as operating process is loaded down with trivial details, high length.Generally speaking, at first to make the hair washing patient the previous day oils and fats of decaptitating.Wanting earlier special elastic medicated cap to be worn over head during inspection goes up fixing, to place the electrode position hair separately with comb then, expose scalp, with 75% ethanol wiping scalp with degrease, then electrode is clipped under the elastic by desired location (as bilateral volume, top, pillow, temples etc.), and be not pressed with hair under the electrode, this promptly finishes the installation of an electrode, after treating that all electrodes install, the electrode holder that will lead again on the noseplate clips one by one by positions such as bilateral volume, top, pillow, temporos, and will notice that electrode holder puts order (and in this order finishing the back press from both sides back).So far patient's EEG electrode installation process side accuses and all finishes.General patient will have 10-13 electrode, generally will be during installing electrodes with 3-4 minute than skilled operators, unskilled person in addition will with more than 4 minutes down to 5-6 minute.Whole process is very loaded down with trivial details, and very easily gets the position wrong, presss from both sides wrong electrode.And often occur finishing dismantling electrode holder behind a electroencephalogram, the inconsistent electric wire that causes is intertwined when order and installation, delay a large amount of quality time and remove separated time, and if things go on like this pull electric wire, also easily cause the end of a thread welding position broken string even the inspection that occasions a delay.

Purpose of design of the present utility model is method and common electrode are installed are installed under the prerequisite of the EEG signals that method institute must extraction guaranteeing to extract international electrode, simplified structure, reduces cost; The electrode cap adjustable size, make the same year to adapt to not, the needs of different cranial diameters; Adopt the electric screw electrode of special structure, separate hair automatically, directly extract EEG signals from scalp, handled easily, safe and reliable; Take into account the compatible connected mode with existing EEG(electroencephalography) instrument simultaneously, reach better clinical effectiveness.

Purpose of design of the present utility model realizes with following scheme: with fastening bolt be connected the plastic strip decussation of knob and connect to form space framework the plastic strip of a crown traveling and sagittal traveling (front and back to), connect three (or four again, or five) the horizontal plastic strip of traveling, constitute a helmet shape electrode cap.It is identical all to be shaped on width on every band, and the central channel that number and length differ both can be adjusted size, degree of tightness again with bolted together, made entire electrode medicated cap degree of tightness appropriateness, adjustable size.With connecting the knob company of extension mutually, both kept needed position, again adjustable position between each band.Three fastening bolts place left and right sides temporo side and rear pillow part respectively.Unscrew fastening bolt, the pulling band can be adjusted girth and height.On the central channel relevant position of every band, load onto screw electrode, line that leads that has jaw shape terminal of each screw electrode connection.On the temporo side fastening bolt of the left and right sides suspension ring are housed, side suspension ring connect strap (or tape), adorn a cross bar that can slide up and down in the middle of the opposite side suspension ring square frame, in order to clamp the cloth belt end, electrode cap are worn on patient's head securely, are unlikely getting loose.The electrode cap of making like this, good through clinical trial result, not only guarantee inerrably to extract EEG signals, and easy to operate, do not produce kinking, can shorten the operating time more than one times, patient and doctor please oneself.

Below with reference to accompanying drawing this utility model is done further detailed description:

Fig. 1 this utility model front-view schematic diagram;

Fig. 2 this utility model sagittal traveling plastic strip vertical view;

The horizontal traveling plastic strip of Fig. 3 this utility model vertical view;

The crown traveling plastic strip of Fig. 4 this utility model vertical view;

Fig. 5 this utility model screw electrode cutaway view;

Fig. 6 this utility model connects the knob cutaway view;

Fig. 7 this utility model fastening bolt cutaway view;

Fig. 8 this utility model left and right sides suspension ring sketch map;

Fig. 9 this utility model line sketch map that leads;

Figure 10 this utility model left and right sides temporo side position fastening bolt and each plastic strip connected mode figure;

Pillow position fastening bolt and crown traveling and sagittal traveling plastic strip connected mode figure behind Figure 11 this utility model.

As shown in Figure 1, the sagittal traveling plastic strip ［ 1 ］ that curves half garden connects to form space framework with crown traveling band ［ 6 ］ decussation that curves the garden ring, preceding connector is for connecting knob ［ 9 ］, and rear connectors is fastening bolt ［ 10 ］, and connected mode as shown in figure 11; On the central channel of the preceding half cycle of band ［ 6 ］, two forehead position screw electrodes ［ 8 ］ are housed symmetrically.Plastic strip ［ 2 ］［ 3 ］［ 4 ］［ 5 ］［ 13 ］ the (see figure 10) two ends that curve the horizontal traveling of half garden shape are connected with band ［ 6 ］ with fastening bolt ［ 10 ］, and are middle with connection knob ［ 9 ］ and band ［ 1 ］ company of extension mutually, formation helmet shape electrode cap.Two sinciput position screw electrodes ［ 8 ］ are housed on band ［ 5 ］ symmetrically, and linking to each other with band ［ 1 ］ with a screw electrode ［ 8 ］ in band ［ 4 ］ centre position occupies the top meta, as the ground line electrode.Position, 2 tops screw electrode ［ 8 ］ is housed to lateral symmetry, two pillow position screw electrodes ［ 8 ］ are housed on band ［ 3 ］ symmetrically, position, top screw electrode ［ 8 ］ after being equipped with two symmetrically on the band ［ 2 ］, a pillow position screw electrode ［ 8 ］ after can installing band ［ 13 ］ (see figure 10) as required additional and being equipped with two symmetrically on it can have at most and respectively install the electrode cap that two temporo position screw electrodes ［ 8 ］ are formed 21 screw electrodes on the above-mentioned band ［ 3 ］［ 4 ］［ 5 ］ additional.

In order to make the unlikely slippage from patient's head of electrode cap, on temporo position, left and right sides fastening bolt ［ 10 ］, suspension ring ［ 11 ］ and ［ 12 ］ are housed, strap (or tape) ［ 7 ］ is housed on suspension ring ［ 11 ］, the cross bar ［ 81 ］ that can slide up and down is housed, in order to clamp the termination of strap ［ 7 ］ in the middle of suspension ring ［ 12 ］ square frame.The shape of suspension ring ［ 11 ］［ 12 ］ can curve with tinsel as shown in Figure 8, also can make with the sheet metal punching press.

Be clamped in the double-deck nut of screw electrode ［ 8 ］ and lead line as shown in Figure 9 on the electrode cap, one end is a jaw shape terminal ［ 91 ］, the other end is general club shape plug ［ 93 ］, and intermediate connection ［ 92 ］ can adopt the softish non-ferrous metal lead that insulating barrier is arranged.

Band ［ 1 ］［ 2 ］［ 3 ］［ 4 ］［ 5 ］［ 6 ］［ 13 ］ all can be used plastic plate punching molding, also can use the plastics die cast, and its width is identical, different in size, and thickness should keep certain elasticity of band.

The shape of band ［ 1 ］ as shown in Figure 2, its medial launder is divided into groove ［ 21 ］［ 22 ］ and ［ 23 ］ three sections, each is unequal for the length of three sections grooves.

Band ［ 2 ］［ 3 ］［ 4 ］［ 5 ］［ 13 ］ five rule belt shapes are all identical.As shown in Figure 3, the length of its medial launder ［ 31 ］［ 32 ］［ 33 ］ is divided two kinds, and groove ［ 31 ］ is identical with groove ［ 33 ］ length, and the length of groove ［ 32 ］ should be longer than the length of groove ［ 31 ］ and ［ 33 ］.

Band ［ 6 ］ as shown in Figure 4, its length should be greater than the maximum perimeter of the normal head of the mankind, totally 5 of its medial launders, length is 4 kinds, and is except that groove ［ 42 ］ is identical with groove ［ 44 ］ length, surplus all inequality, medial launder ［ 43 ］ is the longest, and groove ［ 45 ］ takes second place, and groove ［ 41 ］ is the shortest.

The structure of screw electrode ［ 8 ］ as shown in Figure 5, it is by half light screw ［ 51 ］, hex nut ［ 53 ］ and garden nut ［ 54 ］ and have the double-screw bolt ［ 55 ］ of inside and outside two-layer microgroove to form.Half light screw ［ 51 ］ is made with non-ferrous metal, and its length is greater than the thickness of double-screw bolt ［ 55 ］, and sphere is made at its tip, to guarantee that automatically separately hair contacts reliably with scalp, good electrical conductivity and lower contact resistance is arranged.

Connect knob ［ 9 ］ as shown in Figure 6, it is with metal or a nonmetal integral body of making, dish ［ 61 ］［ 63 ］ in garden are fused by middle short column body ［ 62 ］ up and down, the length of short column body ［ 62 ］ should be slightly larger than the thickness of two-layer band, its diameter is slightly less than the width of band medial launder, and the diameter of garden dish ［ 61 ］［ 63 ］ should be greater than the width of band medial launder less than the width of band up and down.

The structure of fastening bolt ［ 10 ］ as shown in Figure 7, it is made up of bolt ［ 71 ］, nut ［ 72 ］ and rubber blanket ［ 73 ］.The lower end of double-screw bolt ［ 71 ］ is shaped on the garden dish of a diameter greater than strip width, opens the stopper slot that a width equals strip width in dish inboard, garden.

The two ends of band ［ 2 ］［ 3 ］［ 4 ］［ 5 ］［ 6 ］［ 13 ］ are stacked, tighten up with fastening bolt ［ 10 ］, its connected mode as shown in figure 10, because on rubber sheet gasket ［ 73 ］ pad, band after fastening can not slide, misplace, guarantee the electrode cap fixed in shape, the screw positioning of electrode is accurate.

During clinical use, both can adjust the size of electrode cap by three fastening bolts ［ 10 ］, can dismantle or install additional one or two bands again, its screw electrode ［ 8 ］ is gone up the line that leads that clamps and needn't be removed, just there is not the troublesome problem of the line that leads that sub-argument is intertwined yet, both simple and convenient, safe and reliable.

Claims

1, a kind of electroencephalograpcap cap of forming by plastic strip [1] [2] [3] [4] [5] [6] [13], fastening bolt [10], strap [7], suspension ring [11] [12], connection knob [9] and screw electrode [8], it is characterized in that with fastening bolt [10] be connected the main body frame that the plastic strip [1] of knob [9] with the plastic strip [6] of a crown traveling and a sagittal traveling connects to form decussation, connect again three (or four or five) laterally the plastic strip of traveling constitute a helmet shape electrode cap; It is identical all to be shaped on width on every band, and the central channel that number and length differ is equipped with screw electrode [8] on the relevant position of every band central channel; The position of screw electrode [8] is adjustable; The size and the degree of tightness of helmet shape electrode cap are adjustable.

2, by the said electrode cap of claim 1, the screw that it is characterized in that screw electrode ［ 8 ］ is half light screw ［ 51 ］, and half light screw ［ 51 ］ is to make with non-ferrous metal, and sphere is made at its tip.

3, by the said electrode cap of claim 1, it is characterized in that the garden dish of a diameter greater than strip width made in the lower end of the bolt ［ 71 ］ of fastening bolt ［ 10 ］, open the stopper slot that a width equals strip width in dish inboard, garden.

4,, it is characterized in that in the middle of suspension ring ［ 12 ］ square frame cross bar that can slide up and down ［ 81 ］ being housed by the said electrode cap of claim 1.