JP2006095158A - Tool for preserving electrode for medical use - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tool for preserving an electrode for medical use which suppresses the loss of a water-soluble component contained on the adhesive surface of a conductive adhesive layer in the electrode for medical use when the electrode for medical use is preserved, stably keeps various characteristics such as an electric characteristic, removes foreign substances, which are attached onto the adhesive surface of the conductive adhesive layer so as to be the cause of deterioration in adhesive strength by repetitive usage, by transferring, and recovers the adhesive strength. <P>SOLUTION: The tool comprises not less than one base bodies 11; and hydrophobic adhering layers 12 which are arranged in the base bodies 11, having the adhering strength which is larger than that on the adhesive surface of the conductive adhesive layers 31. In the tool, the hydrophobic adhering layer 12 is used as the one which is not welded onto the adhesive layer of the conductive adhesive layer 31, does not absorb the water-soluble component, holds the electrode 30 for medical use on the adhering surface, and removes the foreign substances, which are attached onto the adhesive surface of the conductive adhesive layer 31, by transferring them onto the adhering surface. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a medical electrode storage device. More specifically, during storage of a medical electrode (for example, a low frequency treatment device electrode), water-soluble components (electrolytic salt, moisturizer, plasticizer, etc.) contained in the adhesive surface of the conductive adhesive layer in the medical electrode. It is possible to suppress loss and stably maintain various characteristics such as electrical characteristics, and impurities (such as, for example, adhered to the adhesive surface of the conductive adhesive layer that cause a decrease in adhesive strength due to repeated use) The present invention relates to a medical electrode storage device that can remove foreign substances such as detached epidermal cells and dust by transfer and restore adhesive strength.

  Medical electrodes (for example, low-frequency treatment device electrodes) are used repeatedly, but when the medical electrodes are peeled off the skin, epidermal cells, dust, etc. adhere to the adhesive surface of the conductive adhesive layer of the medical electrodes. There was a problem that the adhesive strength was lowered. For this reason, commercially available low-frequency therapeutic device electrodes (for example, OMRON Healthcare, trade name: Long Life Pad, Matsushita Electric Works, trade name: Long Use Pad) are electrically conductive adhesive layers in medical electrodes. The adhesive surface was washed with water, dried and reused. However, if the adhesive surface of the conductive adhesive layer is washed with water in this way, water-soluble components (electrolytic salt, moisturizer, plasticizer, etc.) contained in this adhesive surface will flow out, and electrical characteristics will be generated each time the water is washed. However, there is a problem that the flexibility, moisture retention and the like are deteriorated.

  In addition, as a means of recovering the adhesive strength of the adhesive surface of the conductive adhesive layer that has been reduced due to repeated use, the uppermost layer having the adhesive surface with reduced adhesive strength can be obtained by laminating the conductive adhesive layer in multiple layers. There has been proposed a method of peeling a conductive adhesive layer to expose a new adhesive surface (see Patent Documents 1 and 2). However, these methods have a problem in that it is necessary to laminate expensive conductive adhesives in multiple layers, and the manufacturing process becomes complicated, resulting in an increase in production cost.

In addition, as a medical electrode storage tool, the medical electrode is stored and stored in a storage flat plate in which the surface and the back surface of the substrate are subjected to non-adhesive processing or a pair of recesses formed on the surface and the back surface of the substrate. At present, only plastic storage containers are used.
JP 2001-259044 A JP 2004-107378 A

  The present invention has been made in order to solve the above-described problems, and the aqueous solution contained in the adhesive surface of the conductive adhesive layer in the medical electrode when the medical electrode (for example, a low-frequency treatment device electrode) is stored. It is possible to suppress the loss of adhesive components (electrolytic salts, moisturizers, plasticizers, etc.) and to maintain various characteristics such as electrical characteristics stably, as well as conductivity that causes a decrease in adhesive strength due to repeated use. The purpose of the present invention is to provide a medical electrode storage device that can remove impurities (for example, foreign substances such as detached epidermal cells and dust) adhering to the adhesive surface of the adhesive layer and restore the adhesive force. And

  In order to achieve the above object, the present invention provides the following medical electrode storage device.

[1] A medical electrode storage device used for storing a pair of medical electrodes having a conductive adhesive layer containing a water-soluble component, wherein the medical electrode storage device includes one or more substrates and the surface and / or the back surface of the substrate. And a hydrophobic adhesive layer having a higher adhesive force than the adhesive surface of the conductive adhesive layer, and the hydrophobic adhesive layer is not fused to the adhesive surface of the conductive adhesive layer. In addition, the medical electrode is held on the adhesive surface without absorbing the water-soluble component, and impurities adhering to the adhesive surface of the conductive adhesive layer are transferred onto the adhesive surface and removed. Medical electrode storage tool capable of.

[2] The surface area of the adhesive surface of the hydrophobic adhesive layer is not less than the surface area of the adhesive surface of the conductive adhesive layer and not more than the surface area of the surface and / or the back surface of the substrate. Medical electrode storage tool.

[3] The hydrophobic adhesion layer further includes a flexible substrate having one surface adhered to the hydrophobic adhesive layer and another surface subjected to a treatment not adhered to the hydrophobic adhesive layer, One or more of the adherends constituted by attaching a layer to one surface of the flexible substrate expose the adhesive surface of the uppermost hydrophobic adhesive layer on the surface and / or the back surface of the substrate. Single layer or multilayer lamination with an adhesive layer or double-sided tape interposed between the other surface of the lowermost flexible substrate and the surface and / or back surface of the substrate. The medical electrode storage device according to [1] or [2], wherein the medical electrode is disposed and fixed as a body.

[4] One or two recesses, each of which has an edge protruding in the vertical direction from the front surface and / or the back surface on the outer peripheral portion, and is configured by the front surface and / or the back surface and the edge portion. The medical electrode storage device according to [3], wherein the laminated body of the sticking body is housed and fixed in a state where the laminated body is housed.

[5] At each end of the sticking body, a gripping part is formed to enable easy peeling of the sticking bodies one by one from the upper layer side of the laminate, and The medical electrode storage device according to [4], wherein the outer peripheral shape and the edge have a shape corresponding to the accommodation of the grip portion.

[6] A portion where the hydrophobic adhesive layer is not provided or an adhesive surface of the hydrophobic adhesive layer on a region corresponding to the grip portion on the flexible base material constituting the sticking body. The medical electrode storage device according to [5], which has a portion covered with a non-adhesive member.

[7] Any one of [1] to [6], wherein a peeling member is disposed on the exposed adhesive surface of the hydrophobic adhesive layer or the exposed adhesive surface of the hydrophobic adhesive layer of the laminate. Medical electrode storage tool.

[8] The medical electrode storage device according to [7], wherein the peeling member has a notch for peeling to facilitate peeling.

  According to the present invention, in addition to the above [1] to [8], the medical electrode storage tool according to the following [9] to [13] is preferable.

[9] Any of the above [1] to [8], wherein the hydrophobic adhesive layer has a peel angle of 180 degrees with respect to the polypropylene plate, and an adhesive force in a peel test of a peel rate of 300 mm / min is 50 to 1000 g / 25 mm. A medical electrode storage device according to claim 1.

[10] The medical electrode storage device according to any one of [1] to [9], wherein the hydrophobic adhesive layer has a water absorption rate of Ringer's solution with respect to its own weight of 20% by mass or less.

[11] The medical electrode storage device according to any one of [1] to [10], wherein the hydrophobic adhesive layer contains an adhesive of natural rubber or synthetic rubber, acrylic, or urethane.

[12] The medical electrode storage device according to any one of [1] to [11], wherein the base is made of a plastic, metal, ceramic film or plate member, or natural paper or synthetic paper.

[13] The medical electrode storage device according to any one of [1] to [12], wherein the flexible base material is a polyolefin, polyester, or polyamide film.

  According to the present invention, water-soluble components (electrolytic salts, moisturizers, plasticizers, etc.) contained in the adhesive surface of the conductive adhesive layer in the medical electrode during storage of the medical electrode (for example, a low-frequency treatment device electrode). It is possible to suppress loss and stably maintain various characteristics such as electrical characteristics, and impurities (such as, for example, adhered to the adhesive surface of the conductive adhesive layer that cause a decrease in adhesive strength due to repeated use) There is provided a medical electrode storage device that can remove foreign substances such as detached epidermal cells and dust by transfer and restore adhesive strength.

  Hereinafter, the best mode for carrying out the present invention will be specifically described with reference to the drawings.

  As shown in FIGS. 1A and 1B, the medical electrode storage device according to the first embodiment of the present invention includes a conductive adhesive layer 31 containing a water-soluble component (see FIG. 3B). Is a medical electrode storage device 10 used for storing a pair of medical electrodes 30 (see FIGS. 2 and 3B), including one or more base bodies 11, a surface of the base body 11, and And / or a hydrophobic adhesive layer 12 having a higher adhesive force than the adhesive surface of the conductive adhesive layer 31 disposed on the back surface, and the hydrophobic adhesive layer 12 melts with the adhesive surface of the conductive adhesive layer 31. Without wearing or absorbing water-soluble components, the medical electrode 30 is held on the adhesive surface, and impurities (not shown) adhering to the adhesive surface of the conductive adhesive layer 31 are removed. It is characterized in that it can be transferred onto the adhesive surface and removed. In this case, the two hydrophobic adhesive layers 12 are disposed on the front surface and the back surface of the substrate 11 corresponding to the pair of medical electrodes 30. FIG. 1B shows a case where one substrate is provided.

  As shown in FIGS. 3A and 3B, the medical electrode storage device 10 according to the first embodiment of the present invention holds the medical electrode 30 on the adhesive surface of the hydrophobic adhesive layer 12. Can be saved. In that case, the foreign substance adhering to the adhesion surface of the electroconductive adhesion layer 31 in the medical electrode 30 can be transferred and removed on the adhesion surface.

  As shown in FIG. 3B, in the case of the present embodiment, the surface area of the adhesive surface of the hydrophobic adhesive layer 12 is equal to or larger than the surface area of the adhesive surface of the conductive adhesive layer 31, and the surface and / or the back surface of the substrate 11 is used. The surface area is less than or equal to the surface area. With this configuration, the hydrophobic adhesive layer 12 can always come into contact with the entire adhesive surface of the conductive adhesive layer 31 when the medical electrode 30 is stored (the adhesive surface of the conductive adhesive layer 31). The contaminants adhering to the entire surface can be transferred onto the adhesive surface and removed), and the effects of the present invention are fully exhibited.

  Further, as shown in FIGS. 4 (a) and 4 (b), instead of the configuration in which the hydrophobic adhesive layer 12 is simply disposed on the base body 11 (see FIG. 1 (b)), it is attached to the hydrophobic adhesive layer 12. A flexible base material 13 having one surface to be attached and the other surface subjected to a treatment that does not stick to the hydrophobic adhesive layer 12 (for example, a back surface treatment in a single-sided tape will be described later); One or more of the sticking bodies 14 formed by sticking the hydrophobic adhesive layer 12 to one surface of the flexible base material 13 are on the front surface and / or the back surface of the base body 11 (see FIG. 3B). An adhesive layer (transfer tape) with the adhesive surface of the uppermost hydrophobic adhesive layer 12 exposed and between the other surface of the lowermost flexible substrate 13 and the surface and / or the back surface of the substrate 11. Or a double-sided tape (not shown) and disposed as a single-layer or multilayer laminate, It is preferably one that is a constant. In this case, in order to realize reliable fixing, it is preferable that the other surface of the lowermost flexible base material 13 is not subjected to the above-described back surface treatment. The double-sided tape means that an adhesive layer is disposed on both sides of a predetermined base material, and the transfer tape means that both sides of the adhesive layer are protected by a peeling member. (At the time of arrangement and fixing, the peeling member is peeled off and the adhesive layer portion is used). In addition, the above-mentioned adhesive layer or double-sided tape is disposed so as to be in a range not more than the surface area of the front surface and / or the back surface of the substrate 11 and not less than the surface area of the adhesive surface of the conductive adhesive layer 31. If comprised in this way, the new adhesion surface of the hydrophobic contact bonding layer 12 can be easily exposed by peeling off the uppermost sticking body 14 with which the adhesive force fell, and it is used for a long time as a storage container. Is possible.

  As shown in FIGS. 5 (a), (b), (c), and (d), the medical electrode storage device 20 according to the second embodiment of the present invention has a base 21 on its outer periphery. The laminated body 15 of the sticking body 14 has one or two concave portions 23 each having an edge portion 22 projecting in the vertical direction from the front surface and / or the back surface, and configured by the front surface and / or the back surface and the edge portion 22. (15a, 15b) (see FIGS. 4 (a), (b)) is disposed and fixed in a state where it is stored. In this case, the arrangement and fixing of the laminated body 15 to the base body 11 can be performed by interposing an adhesive layer or a double-sided tape (not shown) as in the case shown in FIG. In addition, without using the laminated body 15 (15a, 15b) of the sticking body 14, the substrate 21 (the substrate 11 in the case of FIG. 1B) is hydrophobic as in the case shown in FIG. 1B. Only the adhesive layer 12 may be provided. 5 (a), (b), and (c), when two recesses 23 are configured corresponding to a pair of medical electrodes 30 (see FIGS. 2 and 3 (b)). FIG. 5C shows a case where the laminated body 15a is removed and only the laminated body 15b is accommodated in order to show the shape of the recess 23. FIG. With this configuration, the positioning of the hydrophobic adhesive layer 12 on the substrate 21 and the positioning of the medical electrode 30 during storage are accurate and easy, and the portability is improved and the handling becomes easy. Thus, the effects of the present invention are fully exhibited.

  In the present embodiment, the case where the sticking body 14 is laminated on the base 21 as a multi-layer laminated body 15 (15 (a), 15 (b)) is shown, but FIG. As shown, it is possible to easily peel the sticking bodies 14 one by one from the upper layer side of the laminate 15 (15 (a), 15 (b)) at each end of the sticking body 14. A gripping portion 16 is formed, and the outer peripheral portion and the edge portion 22 of the base body 21 have a shape corresponding to the storage of the gripping portion 16, and the flexible base material 13 constituting the sticking body 14 (FIG. 4 ( a) (see FIG. 4 (a)) in the region corresponding to the gripping portion 16 above or the adhesive surface of the hydrophobic adhesive layer 12 on the non-adhesive member. It is preferable to have a portion covered with (not shown). By comprising in this way, peeling from the laminated body 15 (15 (a), 15 (b)) of the sticking body 14 becomes easy, and usability improves.

  Although not shown, a release member is disposed on the exposed adhesive surface of the hydrophobic adhesive layer 12 or the exposed adhesive surface of the laminate 15 (15 (a), 15 (b)). Preferably, the peeling member has a peeling notch (so-called kiss cut) for facilitating peeling. By comprising in this way, while becoming easy to handle, peeling of a peeling member becomes easy.

  As shown in FIGS. 6A and 6B, the medical electrode storage tool 20 according to the second embodiment of the present invention is a laminate 15 of an adhesive body 14 (see FIG. 4A). It can be preserved by holding the medical electrode 30 on the adhesive surface of the uppermost hydrophobic adhesive layer 12 (see FIG. 4A) of (15a, 15b). In that case, the foreign substance adhering to the adhesion surface of the electroconductive adhesion layer 31 (refer FIG. 3) in the medical electrode 30 can be transcribe | transferred and removed on the adhesion surface.

  Hereinafter, each component used for the preservation | save tool of the medical electrode of this invention and the manufacturing method of the preservation | save tool of the medical electrode of this invention are demonstrated concretely.

  The substrate used in the present invention is not particularly limited as long as it has a certain degree of rigidity so that a medical electrode (for example, a low-frequency treatment device electrode) is not bent or wrinkled. And films made of metal, ceramics, or plate-like members, or natural paper or synthetic paper. About what has an edge part, a plastic molded product is preferable from the surface of a moldability. Among plastics, a thermoplastic resin is more preferable, and specifically, polyethylene, polypropylene, polyvinyl chloride, ABS resin, polyester, polytetrafluoroethylene (for example, product name: Teflon (registered trademark) manufactured by DuPont), etc. Can be mentioned. The thickness of the substrate is preferably 0.05 to 5 mm, more preferably 0.1 to 3 mm.

  The hydrophobic adhesive layer used in the present invention has higher adhesive force than the adhesive surface of the conductive adhesive layer in the medical electrode. Here, the “hydrophobic adhesive layer” means that the adhesive layer has a property of weak affinity with water, and is further fused to the adhesive surface of the conductive adhesive layer in the medical electrode. It also means that it has the property of holding the medical electrode on its adhesive surface without absorbing water-soluble components. As described above, the hydrophobic adhesive layer used in the present invention has an adhesive force and hydrophobicity that are higher than the above-mentioned predetermined values, so that it does not fuse with the adhesive surface of the conductive adhesive layer in the medical electrode. In addition, the medical electrode can be held on the adhesive surface without absorbing water-soluble components, and impurities adhering to the adhesive surface of the conductive adhesive layer can be transferred onto the adhesive surface and removed. .

  As described above, the hydrophobic adhesive layer has predetermined adhesive strength and hydrophobicity as characteristics, and an index of the characteristics will be described below.

  Regarding the adhesive strength, the adhesive strength in the peel test of the hydrophobic adhesive layer with respect to the polypropylene plate of 180 degrees and the peel speed of 300 mm / min is preferably 50 to 1000 g / 25 mm, and preferably 100 to 300 g / 25 mm. More preferably. If it is less than 50 g / 25 mm, impurities adhering to the adhesive surface of the conductive adhesive layer may not be transferred onto the adhesive surface and removed sufficiently. If it exceeds 1000 g / 25 mm, the adhesive force is too great, and it may be difficult to remove the medical electrode. In this case, it is assumed that the conductive adhesive layer in the medical electrode has an adhesive strength of 20 to 200 g / 25 mm (the same applies hereinafter). As such a conductive adhesive layer having adhesive force, for example, trade name: Technogel conductive adhesive manufactured by Sekisui Chemical Co., Ltd. can be mentioned.

  Regarding the “property not to be fused with the adhesive surface of the conductive adhesive layer” of the hydrophobic property, for example, after bonding the adhesive surface of the hydrophobic adhesive layer and the adhesive surface of the conductive adhesive layer, 1 It is preferable that the adhesive force in the peel test of the hydrophobic adhesive layer after the passage of time with respect to the adhesive surface of the conductive adhesive layer is 180 degrees and the peel rate is 300 mm / min is 500 g / 25 mm or less. More preferably, it is 25 mm or less. If it exceeds 500 g / 25 mm, the adhesive surface of the conductive adhesive layer may be fused. In addition, since the above-mentioned value varies depending on the type of the hydrophobic adhesive layer and the conductive adhesive layer, the value is limited to the above-mentioned value as long as it can be peeled without causing cohesive failure of each layer. is not.

  Among the hydrophobic properties, for example, “the property of not absorbing water-soluble components”, for example, the water absorption rate of the Ringer's solution with respect to its own weight of the hydrophobic adhesive layer is preferably 20% by mass or less, and 10% by mass. More preferably, it is as follows. When it exceeds 20 mass%, a water-soluble component may be absorbed and the electrical characteristics etc. of a conductive adhesion layer may be reduced.

  Examples of such a hydrophobic adhesive layer include those containing a natural rubber or synthetic rubber adhesive, an acrylic adhesive, or a urethane adhesive. Specifically, acrylic adhesives used in US 3M, trade name: # 1522DC and # 1521 tape, or synthetic rubber adhesives used in US 3M, trade name: # 9877 tape. Agents and the like can be mentioned as suitable examples.

  As an adhesive layer (transfer tape) or double-sided tape that interposes in order to arrange and fix the laminate of the adherend used in the present invention on the front surface and / or back surface of the substrate, the laminate is securely disposed. As long as it can be fixed, there is no particular limitation, and a widely used one can be used as appropriate.

  As a flexible base material used for this invention, what consists of a film of polyolefin, polyester, or polyamide can be mentioned, for example. The thickness of the flexible substrate is preferably 0.01 to 1 mm, and more preferably 0.03 to 0.1 mm.

  In the present invention, a hydrophobic adhesive layer or a laminate is disposed and fixed on the front surface and / or back surface of the substrate. The method will be described below.

  As shown in FIG. 1 (b), there is no particular limitation on the method for disposing and fixing only the hydrophobic adhesive layer on the surface and / or the back surface of the substrate. For example, the adhesive (solvent base, An emulsion base or a hot melt base may be applied directly on the substrate (specifically, roll coating, screen coating, knife coating, etc.).

  As shown in FIG. 4 (b), the method for disposing and fixing the hydrophobic adhesive layer as a single layer or a multilayer laminate on the surface and / or back surface of the substrate is as described above. In addition, the above-mentioned adhesive may be applied on a flexible member to obtain an adhesive, and the obtained adhesive may be laminated to form a laminate. Using an adhesive tape (single-sided tape) coated with one adhesive on one side of the flexible substrate, this is laminated to form a laminate, and an adhesive layer (may be a transfer tape) or both sides For example, the tape may be disposed and fixed on the substrate. In addition, since the conductive adhesive in the medical electrode is used by being affixed to the skin, it is preferable to use a hydrophobic adhesive layer whose safety has been confirmed (for example, an adhesive for surgical tape). . In addition, it is preferable to apply | coat the back surface processing agent which does not stick with a hydrophobic contact bonding layer on the back surface of the single-sided tape as an adhesion body. Examples of such back treatment agents include various treatment agents such as silicone, urethane, and fluorine. When the single-sided tape is disposed in multiple layers on the front surface and / or back surface of the substrate, it is particularly preferable to apply a back surface treatment agent.

  When the hydrophobic adhesive layer or laminate is disposed and fixed on the front and back surfaces (both sides) of the substrate, the aforementioned peeling is applied to both adhesive surfaces in order to protect both adhesive surfaces of the hydrophobic adhesive layer in advance. It is preferable to arrange a member. Further, in order to facilitate the peeling of the peeling member, a peeling notch is formed in the peeling agent (kiss cut treatment), or one side as a non-adhesive member on a part of the adhesive surface of the hydrophobic adhesive layer end It is preferable to form a tab portion to which a tape or a peeling member is bonded. The tab portion is preferably formed in a size and position that does not hinder the adhesive surface of the hydrophobic adhesive layer. As another example of the tab portion, when producing a single-sided tape, the hydrophobic adhesive layer is pattern-coated on the base material and has a portion where the hydrophobic adhesive layer is not formed, and the hydrophobic adhesive layer is not formed. It is good also as what is laminated | stacked so that parts may mutually oppose and the hydrophobic contact bonding layer is not formed.

  The medical electrode is stored by the storage device obtained as described above. First, the peeling member on the adhesive surface of the hydrophobic adhesive layer is removed, and the already used medical electrode (for example, a low frequency treatment device electrode). This is performed by pasting together the adhesive surface of the conductive adhesive layer facing the exposed adhesive surface of the hydrophobic adhesive layer. Next, when the medical electrode is reused, if the medical electrode is detached (peeled off) from the adhesive surface of the hydrophobic adhesive layer, impurities (for example, detachment epidermis) attached to the adhesive surface of the conductive adhesive layer Foreign matter such as cells and dust) is transferred to the adhesive surface of the hydrophobic adhesive layer, and the adhesive force of the adhesive surface of the conductive adhesive layer is restored.

  In addition, when using the multilayer laminated body of an adhesive body, when the foreign material adhering to the adhesive surface of an electroconductive adhesive layer cannot fully be removed, the single-sided tape (adhesive body) of the uppermost layer of a laminated body is used. Remove (peel) and use a new single-sided tape with a hydrophobic adhesive layer exposed. Although there is no restriction | limiting in particular as the number of lamination | stacking of a laminated body, According to the number of lamination | stacking, the frequency | count of repeated use of a conductive adhesive will increase.

  EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples, but the present invention is not limited to these examples.

Example 1
A polyethylene film having a thickness of 0.075 mm is used as a substrate, and an acrylic adhesive as a hydrophobic adhesive layer is used for medical purposes, which will be described later, because the surface area of both surfaces of the substrate is slightly smaller than the surface area of the substrate. A surface having a thickness of 0.11 mm, applied to a range slightly larger than the adhesive surface of the conductive adhesive layer in the electrode so as to have a thickness of 0.04 mm, and further subjected to kiss-cut treatment as a peeling member A release tool having a silicone release agent disposed thereon was bonded to the adhesive surface of the hydrophobic adhesive layer to obtain a storage device. The adhesive strength of the hydrophobic adhesive layer with respect to the polypropylene plate at 180 ° and the peel rate at a peel rate of 300 mm / min is 700 g / 25 mm, and the peel angle with respect to the adhesive surface of the conductive adhesive layer is 180 °. The adhesive strength in the peeling test at a peeling rate of 300 mm / min was 140 g / 25 mm, and the water absorption rate of the Ringer's solution with respect to its own weight was 8% by mass. Using this storage device, the following skin adhesive force measurement test of a low frequency treatment device electrode (made by OMRON Healthcare, trade name: Long Life Pad) was performed as a medical electrode, and the degree of recovery was evaluated. .

(Skin adhesion measurement test and evaluation of its recovery)
As an electrode having an initial adhesive force, an unused low-frequency treatment device electrode (this electrode is referred to as electrode A) is prepared. Next, peel off both peeling members of the storage device, and use the low frequency treatment device electrode (this two electrodes are referred to as electrode B) that has been used 30 times, one on one side of the hydrophobic adhesive layer and the other on the other side. Paste one and store for 12 hours, then remove from the storage device (the two electrodes at this time are referred to as electrodes C), and the skin adhesive strength of the low frequency treatment device electrodes of electrode A, electrode B and electrode C (units) G) is measured by a 180 degree peel test (speed of 300 mm / min.). The degree of recovery is used as an index for recovering the adhesive strength by comparing the skin adhesive strength between the electrode C and the electrode A. In addition, the measurement result of each skin adhesive force of the electrode A and the electrode B is an average value of each of the two electrodes A and the two electrodes B.

  As a result, the electrode A was 130 g, the electrode B was 65 g, and the electrode C was 145 g. The measurement of the skin adhesive strength slightly varied depending on the skin condition, but the skin adhesive strength of the electrode C increased more than the skin adhesive strength of the electrode A. As described above, the skin adhesive strength of the electrode C increased more than the skin adhesive strength (initial skin adhesive strength) of the unused electrode A. In the case of the unused electrode A, the conductive adhesive was used to protect the surface. In the case of the electrode C, the silicone release agent in the release member disposed above was transferred to the conductive adhesive and reduced its skin adhesive strength. In the case of the electrode C, it was stored in a storage device for 12 hours and then released. In this case, it is considered that the silicone release agent transferred to the conductive pressure-sensitive adhesive in addition to the impurities could be transferred to the adhesive surface of the hydrophobic adhesive layer and removed. Further, it was confirmed by visual observation that impurities (foreign matter) adhering to the conductive adhesive layer were transferred to the entire adhesive surface of the hydrophobic adhesive layer after the electrode was detached.

(Example 2)
In place of the kiss-cut process for facilitating the peeling of the peeling member in Example 1, an adhesive tape (trade name: # 1525LSC polyethylene, manufactured by 3M USA) coated with an acrylic adhesive on the surface of the polyethylene film was used. A storage device with further ease of peeling was obtained in the same manner as in Example 1 except that the tab portion was formed by sticking to the adhesive surface at the end of the hydrophobic adhesive layer.

(Example 3)
A polyethylene film having a thickness of 0.23 mm was used as the substrate, and an adhesive tape in which an acrylic adhesive was applied to the surface of a polyethylene flexible substrate as a laminate (US 3M, trade name: # 1525 LSC polyethylene). That is, the end portion of the peeling member in the adhesive tape is kiss-cut to leave the peeling member as a tab portion, and the remaining peeling member is peeled off (only the uppermost hydrophobic adhesive layer is not peeled off) The back surface of the flexible base material of the lowermost adhesive tape of the laminated body is laminated with a transfer tape (manufactured by 3M, USA) using a laminate of 10 layers of adhesive tape with the tab portions facing each other. , Product name: # 1524), attached to the substrate, cut to a size slightly larger than the outer dimensions of the low frequency treatment device electrode (trade name: Long Life Pad, manufactured by OMRON Healthcare) A storage device with improved usability was obtained by adopting a laminate structure having a hydrophobic adhesive layer. Thereafter, a skin adhesiveness measurement test was conducted in the same manner as in Example 1 except that the storage treatment time was reduced from 12 hours to 1 hour, and the degree of recovery was evaluated.

  As a result, the electrode A was 145 g, the electrode B was 90 g, and the electrode C was 130 g. The measurement of the skin adhesive force slightly varied depending on the skin condition, but the skin adhesive force of the electrode C was sufficiently recovered to the skin adhesive force of the electrode A even though the storage time was shortened to 1 hour. Further, it was confirmed by visual observation that impurities (foreign matter) adhering to the conductive adhesive layer were transferred to the entire adhesive surface of the hydrophobic adhesive layer after the electrode was detached.

Example 4
As a base, a container made of ABS resin having a thickness of 2 mm and having an edge with a height of 2.5 mm from the front surface and the back surface on the outer periphery is used as a low-frequency treatment device electrode (trade name: Long, manufactured by OMRON Healthcare). The one produced by injection molding so as to have a shape slightly larger than the outer dimension of the life pad) was used. In addition, as a laminate, a laminate of 30 adhesive tapes coated with an acrylic adhesive on the surface of a polyethylene flexible base material (trade name: # 5900 sole mat, manufactured by 3M USA) was used. This laminate has a tab portion in which a part of the adhesive surface of the end portion of the hydrophobic adhesive layer is an unapplied portion. For this reason, the uncoated part was cut | disconnected so that it might become the same shape and the same dimension as the outer peripheral part inner side of a base | substrate. Since a double-sided tape for affixing and fixing to the floor is bonded to the bottom layer of the laminate (made by US 3M, trade name: # 5900 sole mat), the base material is peeled off the double-sided tape peeling member. The storage device was obtained by pasting on both sides of the laminate, and the number of laminated bodies was as large as 30 and the usability was further improved. Thereafter, a skin adhesiveness measurement test was conducted in the same manner as in Example 1 except that the storage treatment time was reduced from 12 hours to 3 hours, and the degree of recovery was evaluated.

  As a result, the electrode A was 130 g, the electrode B was 80 g, and the electrode C was 140 g. Although the measurement of skin adhesive strength varies slightly depending on the skin condition, the skin adhesive strength of the electrode C increased more than the skin adhesive strength of the electrode A, although the storage time was shortened to 3 hours. This is for the same reason as in the first embodiment. Further, it was confirmed by visual observation that impurities (foreign matter) adhering to the conductive adhesive layer were transferred to the entire adhesive surface of the hydrophobic adhesive layer after the electrode was detached.

(Comparative Example 1)
In Example 4, instead of the laminate, Example 4 except that a release member (manufactured by Teijin DuPont, trade name: A-50 liner film) in which a silicone release agent was applied to one side of a polyester film was attached to a substrate. In the same manner as described above, a skin adhesiveness measurement test was performed to evaluate the degree of recovery.

  As a result, the electrode A was 140 g, the electrode B was 80 g, and the electrode C was 70 g. The measurement of the skin adhesive strength slightly varied depending on the skin condition, but the skin adhesive strength of the electrode C did not recover to the skin adhesive strength of the electrode A.

  The medical electrode storage device of the present invention is particularly effectively used in various medical fields that require a medical electrode (for example, a low-frequency treatment device electrode) that can be used repeatedly.

BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing which shows typically 1st embodiment of the storage device of the medical electrode of this invention, Fig.1 (a) is a whole perspective view, FIG.1 (b) is A in FIG.1 (a). FIG. It is a perspective view which shows a medical electrode typically. 2 is an explanatory view schematically showing a state in which the medical electrode shown in FIG. 2 is stored in the medical electrode storage device shown in FIG. 1, FIG. 3 (a) is an overall perspective view, and FIG. FIG. 4 is a sectional view taken along line BB in FIG. It is explanatory drawing which shows typically the laminated body used for this invention, Fig.4 (a) is a whole perspective view, FIG.4 (b) is CC sectional view taken on the line in Fig.4 (a). It is explanatory drawing which shows typically 2nd Embodiment of the storage device of the medical electrode of this invention, Fig.5 (a) is a whole perspective view, FIG.5 (b) is D in FIG.5 (a). -D sectional drawing, FIG.5 (c) is a perspective view which shows the state which removed the laminated body of one side, FIG.5 (d) is a perspective view which shows the holding part of the sticking body in a laminated body. FIG. 6 is an explanatory view schematically showing a state in which the medical electrode shown in FIG. 2 is stored in the medical electrode storage device shown in FIG. 5. FIG. 6 (a) is an overall perspective view, and FIG. 6 (b) is It is the EE sectional view taken on the line in Fig.6 (a).

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Medical electrode preservation | save tool (1st Embodiment), 11 ... Base | substrate, 12 ... Hydrophobic adhesive layer, 13 ... Flexible base material, 14 ... Adhering body, 15 (15a, 15b) ... Lamination | stacking Body, 16 ... gripping part, 20 ... medical electrode storage tool (second embodiment), 21 ... base, 22 ... edge, 23 ... recess, 30 ... medical electrode, 31 ... conductive adhesive layer.

Claims (8)

A medical electrode storage tool used for storing a pair of medical electrodes having a conductive adhesive layer containing a water-soluble component,
One or more substrates, and a hydrophobic adhesive layer disposed on the front surface and / or back surface of the substrate, having a higher adhesive force than the adhesive surface of the conductive adhesive layer,
The hydrophobic adhesive layer holds the medical electrode on the adhesive surface without fusing with the adhesive surface of the conductive adhesive layer, and does not absorb the water-soluble component. A medical electrode storage device capable of transferring and removing impurities adhering to the adhesive surface of the adhesive layer on the adhesive surface.   The medical electrode according to claim 1, wherein the surface area of the adhesive surface of the hydrophobic adhesive layer is not less than the surface area of the adhesive surface of the conductive adhesive layer and not more than the surface area of the surface and / or the back surface of the substrate. Storage tool.   And further comprising a flexible substrate having one surface adhered to the hydrophobic adhesive layer and another surface subjected to a treatment not adhered to the hydrophobic adhesive layer, wherein the hydrophobic adhesive layer is In a state where one or more of the sticking bodies constituted by sticking to one surface of the flexible base material, the adhesive surface of the uppermost hydrophobic adhesive layer is exposed on the front surface and / or back surface of the substrate. And, in a state where an adhesive layer or a double-sided tape is interposed between the other surface of the lowermost flexible substrate and the surface and / or back surface of the substrate, as a single layer or multilayer laminate, The medical electrode storage device according to claim 1 or 2, wherein the medical electrode storage device is disposed and fixed.   The base has an edge protruding in the vertical direction from the front surface and / or the back surface on the outer periphery thereof, and the one or two recesses constituted by the front surface and / or the back surface and the edge, The medical electrode storage device according to claim 3, wherein the medical electrode storage device according to claim 3 is disposed and fixed in a state where the laminated body of the sticking bodies is housed.   At each end of the sticking body, a gripping part is formed to enable easy peeling of the sticking bodies one by one from the upper layer side of the laminate, and the outer peripheral shape of the base body and The medical electrode storage device according to claim 4, wherein the edge portion has a shape corresponding to the storage of the grip portion.   A portion where the hydrophobic adhesive layer is not disposed or an adhesive surface of the hydrophobic adhesive layer is non-adhesive in a region corresponding to the grip portion on the flexible base material constituting the sticking body. The medical electrode storage device according to claim 5, which has a portion covered with a member.   The medical electrode storage according to any one of claims 1 to 6, wherein a peeling member is disposed on an exposed adhesive surface of the hydrophobic adhesive layer or an exposed adhesive surface of the hydrophobic adhesive layer of the laminate. Tools.   The medical electrode storage device according to claim 7, wherein the peeling member has a peeling notch for facilitating peeling.

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