Defibrillation pad

Abstract

To provide a defibrillation pad enabling performing an energization test in a state of being stored in a package, and generating less garbage generated at the execution of defibrillation.SOLUTION: A defibrillation pad includes: first and second electrode pads; a plate-like member formed with peeling surfaces on a front face and a rear face, having the first electrode pad stuck to the front face, and the second electrode pad stuck to the rear face; and a conductive member provided in the plate-like member, and electrically connecting a conductive gel of the first electrode pad and a conductive gel of the second electrode pad, which are stuck to the plate-like member,.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to defibrillation pads for use in performing external defibrillation. [Background technology]

[0002] External defibrillators such as automated external defibrillators (AEDs) have been widely used to restore cardiac function by administering an electric shock to patients suffering from ventricular fibrillation and other specific arrhythmias (ventricular tachycardia, atrial fibrillation, atrial flutter, and supraventricular tachycardia).

[0003] An external defibrillator delivers an electric shock to a patient via a pair of electrode pads attached to the patient's chest, while an AED can automatically deliver an electric shock based on the patient's electrocardiogram obtained through the electrode pads.

[0004] Each electrode pad in the pair includes a sheet-like substrate, an electrode layer formed on the substrate, a conductive gel formed in contact with the electrode layer, and a lead wire connecting the defibrillator to the electrode layer. This allows a defibrillation voltage from the defibrillator to be applied to the conductive gel via the lead wire and the electrode layer. As a result, the defibrillation voltage is applied to the patient from the conductive gel attached to the patient's chest.

[0005] It is also common to periodically check the continuity of defibrillation pads before use. This can detect disconnections or dryness of the defibrillation pads. This continuity check is performed, for example, once a day. For example, a continuity check can be performed by passing a weak current through the defibrillation pads using a defibrillator and measuring the impedance at that time. Alternatively, a continuity check can be performed by measuring the impedance between the pads by outputting an impedance measurement signal to the current-carrying portion of the pad using the defibrillator. Performing such continuity checks can avoid serious problems, such as a malfunction of the defibrillation pads during actual defibrillation, which could prevent defibrillation from being performed.

[0006] There are roughly two methods for storing defibrillation pads used in external defibrillation. The first storage method involves removing defibrillation pads shipped in a package such as an aluminum bag and storing them in a case attached to an external defibrillator (particularly an AED). The second storage method involves storing the pads in a package such as an aluminum bag. Defibrillation pads stored using the second method are described in Patent Document 1, for example.

[0007] In the first storage method, portions of the pair of electrode pads are electrically connected within the case, which allows the periodic conduction check. In the second storage method, portions of the pair of electrode pads are electrically connected within the package by a sheet-like connecting member, which allows the periodic conduction check without removing the electrode pads from the package. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-106914 Summary of the Invention [Problem to be solved by the invention]

[0009] However, the first storage method involves removing the electrode pads from the packaging before storing them, and therefore has the disadvantage of being inferior to the second storage method in terms of preventing the conductive gel on the electrode pads from drying out.

[0010] On the other hand, the second storage method (the configuration described in Patent Document 1) has a total of two release sheets attached to each of a pair of electrode pads, and a sheet-like connecting member that electrically connects the pair of electrode pads. Therefore, when actually performing defibrillation, these need to be peeled off from the electrode pads, which results in the disadvantage that at least two release sheets for each pair of electrode pads are generated as waste.

[0011] The present disclosure has been made in consideration of the above points, and provides a defibrillation pad that allows continuity to be confirmed while contained in a package and that generates little waste when defibrillation is performed. [Means for solving the problem]

[0012] One aspect of the defibrillation pad of the present disclosure comprises: First and second electrode pads; a plate-like member having release surfaces formed on its front and back surfaces, the first electrode pad being attached to the front surface and the second electrode pad being attached to the back surface; a conductive member provided on the plate-like member and electrically connecting the conductive gel of the first electrode pad and the conductive gel of the second electrode pad attached to the plate-like member; Equipped with. [Effects of the Invention]

[0013] According to the present disclosure, it is possible to realize a defibrillation pad that allows continuity to be checked while it is contained in a package and that generates little waste when defibrillation is performed. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. 1 is a perspective view showing the overall configuration of a defibrillation pad according to an embodiment. [Figure 2] Diagram showing the electrode pads in use [Figure 3] FIG. 2 is a perspective view of a plate-shaped member showing the appearance of the plate-shaped member; [Figure 4] A side view of the plate-shaped member seen from the +Z direction [Figure 5] FIG. 1 is a perspective view of a plate-shaped member, showing a portion of the plate-shaped member in an expanded state; [Figure 6] A perspective view showing the state of the defibrillation pads when checking continuity. DETAILED DESCRIPTION OF THE INVENTION

[0015] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings.

[0016] FIG. 1 is a perspective view showing the overall configuration of a defibrillation pad 100 according to an embodiment of the present disclosure.

[0017] Defibrillation pad 100 mainly comprises a pair of electrode pads 110, 120 and a plate-like member 130 to which the electrode pads 110, 120 are attached. Defibrillation pad 100 also comprises a connector 150 connected to a defibrillator (FIG. 2), and a lead wire 140 having one end connected to electrode pads 110, 120 and the other end connected to connector 150.

[0018] 2 shows the electrode pads 110, 120 in use. The electrode pads 110, 120 are attached to predetermined positions on the chest of a patient 300. The connector 150 is connected to a defibrillator 200. This causes a voltage to be applied from the defibrillator 200 to the electrode pads 110, 120, and a current corresponding to that voltage flows through the heart, thereby achieving defibrillation. Note that if the defibrillator 200 has a pacing function in addition to a defibrillation function, pacing therapy can also be performed via the defibrillation pads 110, 120.

[0019] Continuing the explanation, returning to Figure 1, the electrode pads 110 and 120 each have a conductive gel 11 (although only the conductive gel 11 of the electrode pad 120 is shown in Figure 1, the electrode pad 110 also has a conductive gel 11), and a voltage from the defibrillator 200 is applied to the conductive gel 11 of the electrode pads 110 and 120 via the lead wire 140 and an electrode layer (not shown).

[0020] In this embodiment, the configuration of the electrode pads 110, 120 is not particularly limited and will be described briefly. The electrode pads 110, 120 have an electrode layer (not shown) formed on a sheet-like substrate 12, and a conductive gel 11 provided on the electrode layer. The lead wire 140 and the electrode layer are electrically connected, so that electricity from the lead wire 140 is supplied to the conductive gel 11 via the electrode layer. However, the configuration of the electrode pads 110, 120 is not limited to this.

[0021] At the time of product shipment, the electrode pads 110, 120, the plate-shaped member 130, and part of the lead wire 140 are contained in a sealed state in a package 1 such as an aluminum bag indicated by the dashed line in the figure. In Fig. 1, the electrode pads 110, 120 are shown separated from the plate-shaped member 130 to make the configuration of the defibrillation pad 100 easier to understand, but in reality, the electrode pads 110, 120 are contained in the package 1 in a state where they are attached to both sides of the plate-shaped member 130, as shown in Fig. 6.

[0022] During defibrillation, the user removes the electrode pads 110, 120 and the plate-shaped member 130 from the package 1. The electrode pads 110, 120 are then peeled off from the plate-shaped member 130 and attached to predetermined positions on the chest of the patient 300.

[0023] The size of the plate-shaped member 130 in the YZ plane is slightly larger than the size in the YZ plane of the conductive gel 11 of each of the electrode pads 110, 120. This allows the electrode pads 110, 120 to be attached to the plate-shaped member 130 without the conductive gel 11 of the electrode pads 110, 120 protruding.

[0024] The defibrillation pad 100 of this embodiment is characterized mainly by the configuration of the plate-like member 130, so the plate-like member 130 will be described in detail below.

[0025] Figure 3 is an oblique view of plate-shaped member 130 showing the appearance of plate-shaped member 130, Figure 4 is a side view of plate-shaped member 130 seen from the +Z direction, and Figure 5 is an oblique view of plate-shaped member 130 showing a portion of plate-shaped member 130 expanded.

[0026] 3 and 4, the plate-shaped member 130 has a plate-shaped base material 131, a release plate 132 fixed to the front surface of the base material 131, and a release plate 133 fixed to the back surface of the base material 131. For the sake of explanation, the surface of the plate-shaped member 130 seen from the +X direction is called the front surface of the plate-shaped member 130, and the surface of the plate-shaped member 130 seen from the -X direction is called the back surface of the plate-shaped member 130.

[0027] The base material 131 is an insulating plate and serves as a core material for the plate-like member 130. In this embodiment, the base material 131 is made of ABS resin material with a thickness of 1 mm. The base material 131 may also be made of, for example, a foam material.

[0028] The release plates 132 and 133 are respectively fixed to the front and back sides of the base material 131 by adhesive 134. The exposed surfaces 132a and 133a of the release plates 132 and 133 are subjected to a release treatment by being coated with, for example, a silicone-based release agent. In this manner, the exposed surfaces 132a and 133a of the release plates 132 and 133 are release surfaces. This allows the user to easily peel the electrode pads 110 and 120 attached to the exposed surfaces 132a and 133a from the plate-shaped member 130 during defibrillation.

[0029] The release plate 132 has an opening 132b formed therethrough that penetrates the thickness thereof, and the release plate 133 has an opening 133b formed therethrough that penetrates the thickness thereof.

[0030] The base material 131 is provided with a conductive member 131a, which electrically connects the conductive gel 11 of the electrode pad 110 and the conductive gel 11 of the electrode pad 120, both of which are attached to the plate-like member 130. The conductive member 131a is a strip-shaped member wound around the surface of the base material 131 so as to cover the openings 132b and 133b from the base material 131 side. The conductive member 131a is fixed to the base material 131 with an adhesive 134.

[0031] As a result, the conductive member 131a electrically connects the conductive gel 11 of the electrode pad 110 at the position of the opening 132b and the conductive gel 11 of the electrode pad 120 at the position of the opening 133b. That is, the conductive gel 11 of the electrode pad 110 is in contact with the conductive member 131a at the position of the opening 132b due to compressive deformation. Similarly, the conductive gel 11 of the electrode pad 120 is in contact with the conductive member 131a at the position of the opening 133b due to compressive deformation. In this way, the conductive gel 11 of the electrode pad 110 and the conductive gel 11 of the electrode pad 120 are electrically connected via the conductive member 131a.

[0032] The resistance value of the conductive member 131a when the electrode pads 110, 120 are electrically connected is preferably selected to be outside the range of the resistance value of the human body when the two electrode pads 110, 120 are attached to the chest of the patient 300. By doing so, it is possible to determine that the conductive member 131a does not attach the electrode pads to the human body and that the electrode pads 110, 120 are electrically connected, thereby more appropriately checking whether the electrode pads 110, 120 are in a storage state suitable for defibrillation.

[0033] In other words, if the resistance value of the conductive member 131a is set within the range of the resistance value of the human body, the defibrillator 200 may recognize the electrode pads 110, 120 as being attached to the human body even when the electrode pads 110, 120 are in a stored state, and may be able to perform defibrillation. In consideration of this, in this embodiment, the resistance value of the conductive member 131a is set to a value outside the range of the human body's resistance value (generally said to be about 50 to 100 Ω for an adult), more preferably to a value exceeding the range of the human body's resistance value. This ensures that the electrode pads 110, 120 are electrically connected (in a state where they can be electrically connected) and that it is clear that the electrode pads 110, 120 are not attached to the human body (in a stored state).

[0034] The size of the openings 132b and 133b should be selected taking into consideration the conformability of the conductive gel 11. Specifically, if the openings 132b and 133b are large, the contact area between the conductive gel 11 and the conductive member 131a increases. As a result, the bonding strength between the conductive gel 11 and the conductive member 131a increases, and when the electrode pads 110 and 120 are peeled off from the plate-like member 130, the conductive gel 11 may be torn off by the conductive member 131a. On the other hand, if the openings 132b and 133b are too small, the contact area between the conductive gel 11 and the conductive member 131a may become small, or the conductive gel 11 may not reach the conductive member 131a. As a result, it may become impossible to check the electrical continuity. In this embodiment, the size of the openings 132b and 133b is approximately 10 to 15 mm.

[0035] The conductivity of the conductive member 131a is set to be the same or approximately the same as the conductivity of the electrode layer (not shown) provided between the substrate 12 and the conductive gel 11 of the electrode pads 110 and 120. For example, the conductive member 131a is made of the same material as the electrode layer (not shown) of the electrode pads 110 and 120. Generally, tin (Sn) or the like is used for the electrode layer of the electrode pads 110 and 120. In this embodiment, silver (Ag) is used for the electrode layer of the electrode pads 110 and 120, so it is preferable to use silver (Ag) or the like as the material for the surface of the conductive member 131a.

[0036] By doing this, when checking conductivity, polarization is less likely to occur in the conductive gel 11 located between the electrode layer of the electrode pads 110, 120 and the conductive member 131a, thereby suppressing discoloration of the electrode layer and conductive gel 11 of the defibrillation pads 110, 120 due to polarization.

[0037] In this embodiment, the conductive member 131a is formed by printing conductive carbon on the surface of PET (Poly Ethylene Terephthalate). The conductivity of the conductive carbon differs from that of the electrode pads 110 and 120, but the carbon does not become carbon ions and does not bond with chloride ions, thereby preventing discoloration of the conductive gel 11. Compared to using the same material as the electrode layers of the electrode pads 110 and 120, this has the advantage of preventing discoloration of the electrode layers of the defibrillation pads 110 and 120 and the conductive gel 11 due to polarization using a cheaper material.

[0038] In this embodiment, the conductive member 131a has a width of 15 mm and a length of 210 mm. The wider the conductive member 131a, the smaller the resistance value of the conductive member 131a. Therefore, by adjusting the width of the conductive member 131a, the resistance value between the conductive gels 11 of the two electrode pads 110 and 120 can be easily adjusted.

[0039] In the above configuration, continuity check of defibrillator pad 100 is performed by defibrillator 200 in the state shown in Fig. 6. Electrode pads 110, 120 are attached to both sides of plate-like member 130 stored in package 1. A predetermined test voltage is applied to electrode pads 110, 120 via lead wire 140 from defibrillator 200 in continuity check mode.

[0040] As a result, a current flows between the electrode pads 110 and 120 via the conductive member 131a of the plate-shaped member 130. The defibrillator 200 calculates the impedance of the electrode pads 110 and 120 based on the current value at this time, and determines based on this impedance whether the electrode pads 110 and 120 are in a storage state suitable for defibrillation. In other words, if the conductive gel 11 of the electrode pads 110 and 120 dries out or if there is a poor connection between the lead wire 140 or the terminal portion (not shown), the impedance increases. Therefore, the defibrillator 200 can determine based on the impedance whether the electrode pads 110 and 120 are in a storage state suitable for defibrillation.

[0041] When using the defibrillation pads 100 for defibrillation, the user first removes the electrode pads 110, 120 from the package 1 while they are still attached to the plate-like member 130. Next, the user peels the electrode pads 110, 120 from both sides of the plate-like member 130. Next, the user attaches the electrode pads 110, 120 to predetermined positions on the chest of the patient 300, and defibrillation power is supplied from the defibrillator 200 to the electrode pads 110, 120.

[0042] The only waste generated at this time is the plate-like member 130, in addition to the packaging body 1. This makes it possible to reduce the amount of waste generated during defibrillation compared to, for example, Patent Document 1.

[0043] As described above, this embodiment includes first and second electrode pads 110, 120, a plate-like member 130 having release surfaces on its front and back surfaces, with the first electrode pad 110 attached to its front surface and the second electrode pad 120 attached to its back surface, and a conductive member 131a provided on the plate-like member 130 and electrically connecting the conductive gel 11 of the first electrode pad 110 attached to the plate-like member 130 with the conductive gel 11 of the second electrode pad 120.

[0044] This allows for continuity check while the pad is contained in the packaging 1, and also allows for the realization of a defibrillation pad 100 that generates little waste when defibrillation is performed.

[0045] Furthermore, according to the embodiment, the conductive member 131a is configured as a band-shaped member that wraps around the surface of the base material 131 so as to pass through at least the openings 132b and 133b and close each of the openings 132b and 133b from the base material 131 side. This fixes the conductive member 131a to the base material 131, preventing changes in the resistance value of the conductive member 131a due to movement of the conductive member 131a. This improves the reliability of the continuity check. In particular, vibration of the conductive member 131a can lead to the defibrillator 200 falsely identifying the occurrence of ventricular fibrillation, but this can be prevented with the configuration of the present embodiment.

[0046] 1, 4, and 5, according to the embodiment, the openings 132b and 133b are formed at approximately the center in the surface direction of the peeling plates 132 and 133, respectively, so that it becomes possible to check the state of the electrode pads 110 and 120 at approximately the center. As a result, the reliability of the check can be improved compared to checking the state of the electrode pads 110 and 120 at an offset position.

[0047] The above-described embodiments are merely examples of specific embodiments of the present invention, and the technical scope of the present invention should not be construed as being limited by these embodiments. In other words, the present invention can be embodied in various forms without departing from the gist or main characteristics thereof.

[0048] In the above-described embodiment, the case where the conductive member 131a is wound around the base material 131 so as to make one full turn around the base material 131 has been described, but this is not limited thereto, and the conductive member 131a may be wound around the base material 131 so as to make one half turn around the base material 131.

[0049] In the above embodiment, a strip-shaped conductive member 131a is provided as a conductive member that electrically connects the conductive gel 11 of the electrode pad 110 and the conductive gel 11 of the electrode pad 120, but the present disclosure is not limited to this. For example, a rod-shaped conductive member that linearly connects the openings 132b and 133b may be provided.

[0050] However, in the embodiment, a strip-shaped conductive member 131a is employed, and by adjusting the width and length of the conductive member 131a, it is possible to make the resistance value of the conductive member 131a outside the range of the resistance value of the human body (approximately 50 to 100 Ω) when the two electrode pads 110, 120 are attached to the chest of the patient 300.

[0051] In the above-described embodiment, the plate-shaped member 130 includes a base material 131, release plates 132 and 133 fixed to both sides thereof, and openings 132b and 133b formed in the release plates 132 and 133, and the conductive member 131a electrically connects the conductive gel 11 of the electrode pad 110 at the position of the opening 132b with the conductive gel 11 of the electrode pad 120 at the position of the opening 133b. However, the plate-shaped member and conductive member of the present disclosure are not limited to this. In short, in the present disclosure, the plate-shaped member may have release surfaces on the front and back surfaces, and may have a first electrode pad attached to the front surface and a second electrode pad attached to the back surface. The conductive member may be provided on the plate-shaped member and electrically connect the conductive gel of the first electrode pad attached to the plate-shaped member with the conductive gel of the second electrode pad. [Industrial Applicability]

[0052] The present disclosure is broadly applicable to defibrillation pads used in performing external defibrillation. [Explanation of symbols]

[0053] 1 package 11 Conductive gel 12, 131 Base material 100 defibrillator pads 110, 120 electrode pads 130 Plate-shaped member 132, 133 Peeling plate 132a, 133a Exposed surface (peeling surface) 132b, 133b opening 134 Adhesive 200 Defibrillator

Claims

1. First and second electrode pads; a plate-like member having release surfaces formed on its front and back surfaces, the first electrode pads being attached to the front surface and the second electrode pads being attached to the back surface; a conductive member provided on the plate-like member and electrically connecting the conductive gel of the first electrode pad and the conductive gel of the second electrode pad attached to the plate-like member; A defibrillation pad comprising:

2. The plate-like member is A plate-shaped substrate; a first release plate fixed to the front surface side of the base material, the exposed surface of which is subjected to a release treatment to form the release surface; a second release plate fixed to the back surface side of the base material, the exposed surface of which is subjected to a release treatment to form the release surface; a first opening formed in the first release plate; a second opening formed in the second release plate; Equipped with the conductive member electrically connects the conductive gel of the first electrode pad at the position of the first opening and the conductive gel of the second electrode pad at the position of the second opening; 10. The defibrillation pad of claim 1.

3. the conductive member is a strip-shaped member wound around the surface of the base material so as to cover at least the first opening and the second opening from the base material side; 3. The defibrillation pad of claim 2.

4. The conductive member includes conductive carbon.

3. The defibrillation pad of claim 1 or 2.

5. The resistance value of the conductive member is outside the range of the resistance value of the human body.

10. The defibrillation pad of claim 1.

6. the first opening and the second opening are formed at approximately the center positions in the surface direction of the first release plate and the second release plate, respectively; 3. The defibrillation pad of claim 2.

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