JP5128202B2 - Medical electrode - Google Patents

Description

  The present invention relates to a medical electrode used for performing electrical defibrillation together with various defibrillators including an automatic external defibrillator (AED).

  Since the use of AEDs by persons other than medical workers has been approved, the installation of AEDs in public facilities such as stations and sports facilities has become widespread. Initially, AED was not recommended for children (eg, under 8 years of age or under 25 kg), but subsequent studies have shown that severe arrhythmias such as ventricular fibrillation are not uncommon in children. As a result, the use of AED has been recommended for children.

  Along with this, with regard to the medical electrode used for defibrillation (hereinafter also simply referred to as “defibrillation electrode”), a defibrillation electrode for children whose electrode area is relatively narrower than the existing one has been developed, If the patient is a general adult, or is physically growing even if he is a minor, an adult defibrillation electrode with a relatively large electrode area should be used. Each child's defibrillation electrode can be used.

By the way, not only defibrillation electrodes but also medical electrodes in general have been in demand for those that serve both adults and children. For example, in the conventional medical electrode described in Patent Document 1, an annular perforation is provided on a pad constituting the main body of the electrode device. When the electrode device is used for a child or the like, the size of the pad can be reduced by separating the outer portion of the perforation.
Japanese translation of PCT publication No. 2002-522178

  However, in the conventional medical electrode described above, it is necessary to separate the outer portion of the perforation. Further, if the portion other than the perforation is broken, the electrode itself cannot be used, so that the separation work needs to be performed carefully. Therefore, this type of medical electrode is not suitable for use as a defibrillation electrode, which is premised on use in situations where there is a momentum. For this reason, there is a need for medical electrodes that serve both adults and children and that are suitable for use as defibrillation electrodes.

  The present invention has been made in view of such a point, and an object thereof is to provide a medical electrode suitable for both defibrillation for adults and defibrillation for children.

The medical electrode of the present invention includes an electrode sheet having an electrode made of a conductive material, a first cover sheet releasably attached to the main surface of the electrode sheet so as to cover the electrode sheet, and the electrode sheet A second cover sheet releasably affixed on the first cover sheet so as to cover the affixed first cover sheet, and the second cover sheet is the first cover sheet An opening that exposes a part of the electrode so that an exposed area of the electrode when peeled from the electrode is smaller than an exposed area of the electrode when the first cover sheet is peeled from the electrode sheet. The structure provided in the coating | coated part of 1 is taken .

The medical electrode of the present invention has a configuration in which the opening portion exposes a central portion of the electrode, and the electrode has a notch shape so that an edge is formed in the central portion .

  According to the present invention, a medical electrode suitable for both defibrillation for adults and defibrillation for children can be provided.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  1A and 1B are perspective views of a main part of a defibrillation electrode according to an embodiment of the present invention, in which FIG. 1A is a side view, FIG. 1B is a top view, and FIG. ) Is a view from the lower surface side.

  The defibrillation electrode has a pad portion 1, and the pad portion 1 has a base material portion 2, an adhesive layer 3, and cover sheets 4 and 5. Furthermore, the defibrillation electrode has a cable 6 and film-like tabs 7 and 8. Although not described in detail in the present embodiment, the defibrillation electrode of the present embodiment has a pair of pad portions 1 like a general defibrillation electrode, and is used for defibrillation. In doing so, these pad portions 1 are connected to the AED via an AED connector (not shown).

  The base material part 2 and the adhesive layer 3 are integrally formed and constitute an electrode sheet. The cover sheet 4 as the first covering portion or cover sheet is detachably attached to the electrode sheet so as to cover the electrode sheet. The cover sheet 5 as the second covering portion or cover sheet is detachably attached to the cover sheet 4 so as to cover the cover sheet 4 attached on the electrode sheet. The cable 6 has one end connected to a metal electrode provided on the electrode sheet, and the other end is provided with an AED connector (not shown). The tab 7 is attached to the cable side end of the cover sheet 4. The cover sheet 4 can be easily peeled by picking the tab 7 and peeling the cover sheet 4 from the electrode sheet. The tab 8 is attached to the tip of the cover sheet 5. The cover sheet 5 can be easily peeled by picking the tab 8 and peeling the cover sheet 5 from the electrode sheet.

  FIG. 2 is an exploded view of essential parts of the defibrillation electrode of FIG.

  The base material part 2 has the base material 2a and the metal electrode 2b. The base material 2a is a planar member formed of a material having flexibility and non-conductivity. The metal electrode 2b is an electrode formed in a film shape from a metal material, and is provided on the main surface of the substrate 2a. An adhesive layer 3 is provided on the main surface of the base material portion 2. The pressure-sensitive adhesive layer 3 has a non-conductive pressure-sensitive adhesive 3a having approximately the same size as the base material 2a, and an opening 3b as an exposing means is formed at the center. The opening 3b is filled with an electrolyte gel 3c. Moreover, the adhesion layer 3 is arrange | positioned on the base material 2a so that the whole region of the metal electrode 2b may be exposed by the opening part 3b as the external shape of the metal electrode 2b was shown with the broken line in the part of the adhesion layer 3 in FIG. . Here, “exposed” means that the metal electrode 2b is not covered with a non-conductive material, and thus can face the patient's body surface only through the electrolyte gel when performing defibrillation. As described, the base material part 2 and the adhesive layer 3 together constitute an electrode sheet.

  The cover sheet 4 is formed of a material having flexibility and non-conductivity, has a planar member 4a having substantially the same size as the electrode sheet, and has an opening 4b as an exposure means at the center. The opening 4b is filled with an electrolyte gel 4c. The cover sheet 4 is attached to the pressure-sensitive adhesive layer 3 of the electrode sheet so as to be peelable. In addition, the cover sheet 4 is arranged on the electrode sheet so that the central portion of the metal electrode 2b is exposed through the opening 4b as shown by the broken line in the cover sheet 4 in FIG. .

  Here, the metal electrode 2b has a notch shape in which an edge is included in the central portion exposed from the opening 4b. In the case of planar metal, the current easily flows on the edge side. Therefore, even if defibrillation is performed in a state where a part of the metal electrode 2b is covered with the cover sheet 4 due to the above-described notch shape, sufficient current can be supplied to the patient. Can be energized.

  The cover sheet 5 is a planar member that is formed of a material having flexibility and non-conductivity and has substantially the same size as the electrode sheet, and is attached to the cover sheet 4 so as to be peelable.

  The cover sheet 5 is an essential configuration when the defibrillation electrode is not used, but is an unnecessary configuration when the defibrillation electrode is used. The purpose of the cover sheet 5 is to maintain the quality of the defibrillation electrode. Therefore, the cover sheet 5 may have a different configuration as long as the purpose can be achieved. For example, it may be a bag-like member that seals the electrode sheet and the cover sheet 4 when not in use and is torn off when in use.

  When the defibrillation electrode having the above configuration is not in use, the pad portion 1 is integrated as shown in FIG. 1, and is preferably packaged and stored for moisture retention such as the electrolyte gels 3c and 4c and the adhesive 3a. Has been.

  In use, the metal electrode 2b is exposed by peeling off the cover sheet 4 or the cover sheet 5 from the electrode sheet.

  Specifically, when the patient is a general adult, or when the patient is a minor but has grown physically enough, the tab 7 is picked and the cover sheet 4 is peeled off from the electrode sheet. At this time, the cover sheet 5 is also peeled off. That is, “peeling the cover sheet 4” means to peel the cover sheet 4 together with the cover sheet 5. When the cover sheet 4 is peeled off, the entire area of the metal electrode 2b is exposed from the opening 3b, so that the entire metal electrode 2b can be opposed to the patient's body surface, and the patient's human body can be passed through a wider area. It can be energized. Thereby, an electric shock can be applied to the entire heart of the patient.

  On the other hand, when the patient is a child, the tab 8 is picked and the cover sheet 5 is peeled off from the cover sheet 4. At this time, the cover sheet 4 remains adhered to the electrode sheet. That is, “peeling the cover sheet 5” means that only the cover sheet 5 is peeled off, leaving the cover sheet 4 on the electrode sheet. When the cover sheet 5 is peeled off, only the central portion of the metal electrode 2b is exposed from the opening 4b, so that only the central portion of the metal electrode 2b can be opposed to the patient's body surface, and through a narrower region. The patient's body can be energized. Thereby, an electric shock can be applied to the entire heart of the patient, and at the same time, an electric shock applied to muscles other than the heart can be reduced.

  As described above, according to the present embodiment, by adopting a configuration in which an adult defibrillation electrode and an infant defibrillation electrode are integrated, either an adult or an infant is used. This eliminates the need to select the device before it is connected to the AED, which is advantageous in terms of ease of handling compared to the case where two separate defibrillation electrodes (ie, for adults and children) are selectively used. .

  Furthermore, according to the present embodiment, since the area where the metal electrode faces the human body is changed by changing the size of the opening, it is possible to switch between adult use and pediatric use with only one electrode. The material cost of the electrode can be reduced.

  Furthermore, according to the present embodiment, since the basic configuration of the existing defibrillation electrode, that is, the configuration in which the electrode sheet surface is protected by the cover sheet, another cover sheet having an opening is interposed, The defibrillation electrode according to the present embodiment can be manufactured without significantly changing the manufacturing process or equipment of the existing defibrillation electrode.

  In the present embodiment, a metal electrode is provided only on one main surface of the substrate, and an opening that defines a larger exposed area and an opening that defines a smaller exposed area are further provided thereon. Although the provided configuration is adopted, other configurations can be adopted. For example, a cover sheet having metal electrodes on both surfaces of a base material and having an opening that exposes only a part of the former metal electrode so that the exposed area of one metal electrode is smaller than the other metal electrode. You may provide on a metal electrode. In this configuration, when the pad portion is configured without using the base material, the pad portion can be configured by using only one metal electrode.

  The embodiment of the present invention has been described above. The above description is an illustration of a preferred embodiment of the present invention, and the scope of the present invention is not limited to this. That is, the description of the configuration of each device and the operation during use of each device is an example, and it is obvious that various modifications and additions to these examples are possible within the scope of the present invention.

The perspective view of the principal part of the defibrillation electrode which concerns on one embodiment of this invention 1 is an exploded view of a main part of a defibrillation electrode according to an embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pad part 2 Base material part 2a Base material 2b Metal electrode 3 Adhesive layer 3a Adhesive 3b, 4b Opening part 3c, 4c Electrolyte gel 4, 5 Cover sheet 4a Planar member

Claims (2)

An electrode sheet having an electrode made of a conductive material;
A first cover sheet releasably attached to the main surface of the electrode sheet so as to cover the electrode sheet;
A second cover sheet releasably affixed on the first cover sheet so as to cover the first cover sheet affixed to the electrode sheet,
The exposed area of the electrode when the second cover sheet is peeled from the first cover sheet is smaller than the exposed area of the electrode when the first cover sheet is peeled from the electrode sheet. An opening for exposing a part of the electrode is provided in the first covering portion.
A medical electrode characterized by that. The opening exposes a central portion of the electrode,
The electrode has a notch shape so that an edge is formed in the central portion.
The medical electrode according to claim 1 .

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