WO2019176900A1 - 粘着部材、及びマイクロニードル貼付剤 - Google Patents
粘着部材、及びマイクロニードル貼付剤 Download PDFInfo
- Publication number
- WO2019176900A1 WO2019176900A1 PCT/JP2019/009866 JP2019009866W WO2019176900A1 WO 2019176900 A1 WO2019176900 A1 WO 2019176900A1 JP 2019009866 W JP2019009866 W JP 2019009866W WO 2019176900 A1 WO2019176900 A1 WO 2019176900A1
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- WIPO (PCT)
- Prior art keywords
- patch
- skin
- microneedle
- present
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M37/00—Other apparatus for introducing media into the body; Percutany, i.e. introducing medicines into the body by diffusion through the skin
- A61M37/0015—Other apparatus for introducing media into the body; Percutany, i.e. introducing medicines into the body by diffusion through the skin by using microneedles
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/02—Adhesive bandages or dressings
- A61F13/0246—Adhesive bandages or dressings characterised by the skin-adhering layer
- A61F13/0256—Adhesive bandages or dressings characterised by the skin-adhering layer characterized by the parametric properties of the adhesive
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M37/00—Other apparatus for introducing media into the body; Percutany, i.e. introducing medicines into the body by diffusion through the skin
- A61M37/0015—Other apparatus for introducing media into the body; Percutany, i.e. introducing medicines into the body by diffusion through the skin by using microneedles
- A61M2037/0023—Drug applicators using microneedles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M37/00—Other apparatus for introducing media into the body; Percutany, i.e. introducing medicines into the body by diffusion through the skin
- A61M37/0015—Other apparatus for introducing media into the body; Percutany, i.e. introducing medicines into the body by diffusion through the skin by using microneedles
- A61M2037/0046—Solid microneedles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M37/00—Other apparatus for introducing media into the body; Percutany, i.e. introducing medicines into the body by diffusion through the skin
- A61M37/0015—Other apparatus for introducing media into the body; Percutany, i.e. introducing medicines into the body by diffusion through the skin by using microneedles
- A61M2037/0061—Methods for using microneedles
Definitions
- the present invention relates to an adhesive member.
- the present invention also relates to a patch (microneedle patch) in which a microneedle array is carried on such an adhesive member, an auxiliary tool for puncturing microneedles into the skin, and the like.
- the present invention relates to a microneedle patch excellent in fixation to the skin.
- Transdermal administration of drugs using a microneedle array is a field that has recently been actively studied.
- a number of companies have studied practical manufacturing methods of microneedle arrays (Patent Documents 1 and 2).
- Patent Documents 3 and 4 methods using various devices have been studied (Patent Documents 3 and 4), and a mechanism for puncturing the microneedle into the skin is ejected or pressed by a spring force. The method of pressing and the method of pressing with the force of the hand are being studied.
- the microneedle array that is punctured and affixed by the method of ejecting or pressing with the force of a spring or the method of pressing with the force of a hand may be lifted from the skin due to the repulsive force of the skin.
- the problem is that the injection effect cannot be obtained.
- the microneedle array when the microneedle array is attached by applying tension to the skin, the skin contracts more significantly and the microneedle array is lifted.
- the microneedle array when the skin is tensioned or pulled without applying tension, the microneedle array is ejected or pressed with the force of a spring, or when pressed with the force of a hand to puncture or stick, There is a problem that the microneedle array is lifted due to contraction or elasticity of the skin. Therefore, development of a new patch capable of stably maintaining the microneedle array on the skin has been desired.
- the main subject of this invention is providing the new microneedle patch which was excellent in the fixing property to skin, or the puncture property of a microneedle. Another object is to provide an adhesive member for that purpose.
- the present inventors have studied an adhesive member in a microneedle patch or a support thereof.
- the microneedle array is lifted by the elasticity of the skin, as shown in FIG.
- the microneedle array is lifted by the relaxation of the skin after puncture as shown in FIG. .
- the present inventors have found that if the skin is adhesively fixed with an adhesive member having an appropriate rigidity, the attached microneedle array can be prevented from lifting (see FIG. 2).
- the gist of the present invention is as follows. [1] A pressure-sensitive adhesive member in which a pressure-sensitive pressure-sensitive adhesive is installed on one side of a support and has a rigidity of 1.3 MPa ⁇ mm 4 or more. [2] The pressure-sensitive adhesive member according to the above [1], wherein the rigidity is in a range of 1.3 to 3400 MPa ⁇ mm 4 . [3] The pressure-sensitive adhesive member according to [1], wherein the rigidity is in a range of 1.3 to 1200 MPa ⁇ mm 4 .
- a central portion is open,
- the size of the opening is a size that does not hinder the passage of the macroneedle array or the microneedle patch, and a hollow raised portion that protrudes to the side where the adhesive layer is not installed so as to cover the opening
- An adhesive member [10] A microneedle array, a microneedle patch, or the patch described in [7] or [8] above is installed on the top surface of the hollow inner surface of the raised portion of the adhesive member described in [9]. The patch.
- an auxiliary tool for puncturing the skin with a microneedle In the pressure-sensitive adhesive member according to any one of the above [1] to [6], the central portion is open, An assisting device, wherein the size of the opening is a size that does not hinder the passage of the macroneedle array or the microneedle patch.
- a patch which is combined with the patch according to [8].
- the applicator for moving / applying the microneedle array to the skin or the applicator for extending the skin and moving / applying the microneedle array to the skin has the patch described in [7] or [8] above Microneedle array device installed.
- the patch or device according to the present invention is excellent for puncturing and placing a microneedle or an array thereof in the skin.
- the skin condition of the puncture target of the microneedle varies greatly depending on the age. For example, the elasticity and elasticity of the skin become less elastic and elastic as children, adults, and elderly people become older. Therefore, the puncture property of the microneedle is also greatly affected.
- ADVANTAGE OF THE INVENTION According to this invention, the variation of the puncture property based on the elasticity of skin can be avoided, aiming at the stable puncture property of a microneedle, and the quantitative property of drug administration.
- the phenomenon of the microneedle array floating from the skin based on skin elasticity or skin contraction can be avoided.
- microneedles array
- lifting of the microneedles (array) from the skin due to repulsion in the puncture direction of the skin can be avoided, or the puncture is improved by stretching the skin, and from the skin of the microneedles (array) after being applied Since floating can be avoided, quantitative drug administration by microneedles is possible.
- the state at the time of sticking the conventional microneedle patch to skin is represented.
- (A) represents that when the microneedle patch is applied as it is without stretching the skin, the microneedle array is lifted by the elasticity of the skin.
- (B) represents that when the skin is stretched and the microneedle patch is applied as it is, the skin contracts and the microneedle array rises.
- the upper part shows the microneedle patch
- the lower part shows the skin.
- the upper figure shows that tension is applied by pulling the skin in the direction of the left and right arrows.
- the middle figure shows the microneedle being punctured and inserted while the skin is pulled.
- the figure below shows that the skin has stopped pulling, the skin has shrunk, and the patch is about to shrink.
- the state at the time of sticking the microneedle patch which concerns on this invention on skin is represented.
- A represents that even if the microneedle patch is applied as it is without stretching the skin, the microneedle array does not float due to the elasticity of the skin.
- B represents that even when the skin is stretched and the microneedle patch is applied as it is, the skin contracts and the microneedle array does not float.
- the upper part shows the microneedle patch
- the lower part shows the skin.
- the upper figure shows that tension is applied by pulling the skin in the direction of the left and right arrows.
- the middle figure shows the microneedle being punctured and inserted while the skin is pulled.
- the figure below shows that the skin has stopped pulling, the skin has shrunk, and the patch is about to shrink.
- An example of the patch according to the present invention is shown.
- (A) is a plan view, and (b) is a side view in the longitudinal direction.
- An example of the patch according to the present invention is shown.
- (A) is a plan view, and (b) is a side view in the longitudinal direction.
- An example of the patch according to the present invention is shown. Except (d), it is the perspective view (convex figure) seen from the side where the hollow part rose, (d) is the perspective view (concave figure) seen from the concave side.
- An example of the patch according to the present invention is shown.
- (A) shows the part containing the patch with which the microneedle array is carry
- (B) shows a state in which such a portion is carried in the patch.
- (C) is the perspective view which looked at the said patch from the outside.
- An example of the auxiliary tool which concerns on this invention is shown.
- the usage example of the auxiliary tool which concerns on this invention is shown. It is the plane perspective view which looked at an example of the device concerning the present invention from the top.
- (A) shows two members for skin stretching, and (b) shows four members for skin stretching.
- 1 shows an example of a device according to the present invention.
- (A) is a front view
- (b) is a plan view
- (c) is a front view when a member for stretching the skin is expanded.
- FIG. 1 shows an example of a device according to the present invention.
- A) is a front view
- (b) is a back view (viewed from the microneedle array side)
- (c) is a cross-sectional view taken along the vertical line of (b).
- 1 shows an example of a device according to the present invention.
- A) Left and (b) Left are front views
- (a) Right and (b) Right are plan views, respectively.
- the use schematic of the device which concerns on (a) or (b) of FIG. 11 is shown.
- requiring rigidity is represented.
- An example of the load curve of the result obtained by the three-point bending test is shown.
- the vertical axis represents the load (N), and the horizontal axis represents the deflection (mm).
- the apparatus used in Example 2 is represented.
- the experimental result in Example 2 is represented.
- the vertical axis represents the stress (N) during pressing, and the horizontal axis represents the rigidity (MPa ⁇ mm 4 ).
- An adhesive member according to the present invention (hereinafter referred to as “the present adhesive member”) has a pressure-sensitive adhesive installed on one side of a support and has a rigidity of 1.3 MPa ⁇ mm. 4 or more.
- the “support” in the pressure-sensitive adhesive member of the present invention can be used for medical purposes, as long as the pressure-sensitive pressure-sensitive adhesive is used to form a pressure-sensitive adhesive member and the rigidity is 1.3 MPa ⁇ mm 4 or more.
- a support made of fiber, resin, or metal can be mentioned.
- the fiber support include non-woven fabrics and woven fabrics, and specific examples of the material include chemical fibers such as cotton, rayon, silk, pulp, and polyester.
- the resin support material examples include polyethylene, polypropylene, polyvinyl chloride, acrylic, polyethylene terephthalate, polystyrene, acrylonitrile / butadiene / styrene copolymer, polycarbonate, polyamide, fluororesin, and polybutylene.
- examples include terephthalate and urethane.
- Specific examples of the metal support material include aluminum, stainless steel, and titanium.
- the adhesive member although 1.3 MPa ⁇ mm 4 above, rather like in the range of 1.3 ⁇ 3400MPa ⁇ mm 4, and more preferably in the range of 1.3 ⁇ 1200MPa ⁇ mm 4, 1 More preferably within the range of 3 to 730 MPa ⁇ mm 4 .
- the microneedle array When the microneedle array is supported on an adhesive member having a rigidity lower than 1.3 MPa ⁇ mm 4 to form a microneedle patch, the microneedle array may be lifted off the skin when the patch is applied to the skin.
- the microneedle array When a microneedle array is supported on an adhesive member higher than 3400 MPa ⁇ mm 4 to make a microneedle patch, the microneedle array will not lift from the skin, but the microneedle will not be stressed and will not puncture the skin well. There is a fear. Particularly important in the present invention is that the adhesive member has a rigidity of 1.3 MP ⁇ mm 4 or more.
- the rigidity of the pressure-sensitive adhesive member is appropriately adjusted depending on the material of the support and the pressure-sensitive pressure-sensitive adhesive, manufacturing conditions, thickness, the size and shape of the pressure-sensitive adhesive member, and the like.
- the microneedle array is preferably subjected to a stress of 15N or more, more preferably a stress of 20N or more.
- any medical-use pressure-sensitive adhesive can be used.
- an acrylic pressure-sensitive adhesive made of an acrylic polymer, a styrene block copolymer such as a styrene-isoprene-styrene block copolymer, a styrene-butadiene-styrene block copolymer, polyisoprene, and polyisobutylene.
- Rubber adhesives such as polybutadiene, silicone adhesives such as silicone rubber, dimethylsiloxane base and diphenylsiloxane base, vinyl ether adhesives such as polyvinyl methyl ether, polyvinyl ethyl ether and polyvinyl isobutyl ether, vinyl acetate-ethylene copolymer
- vinyl ether adhesives such as polyvinyl methyl ether, polyvinyl ethyl ether and polyvinyl isobutyl ether, vinyl acetate-ethylene copolymer
- polyester ester adhesives composed of vinyl ester adhesives such as coalescence, carboxylic acid components such as dimethyl terephthalate, dimethyl isophthalate, and dimethyl phthalate, and polyhydric alcohol components such as ethylene glycol. Door can be.
- These pressure-sensitive adhesives may be used alone or in combination of two or more.
- the pressure-sensitive adhesive may be installed on the entire surface of the support or may be installed on a part thereof.
- the pressure-sensitive adhesive layer in a range where the pressure-sensitive pressure-sensitive adhesive is installed on the support is referred to as “pressure-sensitive adhesive layer”.
- the pressure-sensitive adhesive may be divided into two or more and installed on the support. In that case, a plurality of pressure-sensitive adhesive layers exist.
- the planar shape of the pressure-sensitive adhesive member of the present invention is not particularly limited and can be appropriately selected depending on the purpose.
- the basic shape includes a polygon (e.g., a quadrangle, a hexagon, an octagon), a circle, and an ellipse.
- it is a square or a polygon.
- the pressure-sensitive adhesive member of the present invention can be used as a base material for supporting a microneedle array described later.
- the microneedle array is carried on the surface on the pressure-sensitive adhesive layer side of the pressure-sensitive adhesive member of the present invention.
- the central portion is open, the size of the opening is a size that does not hinder the passage of the macroneedle array or the microneedle patch, so as to cover the opening,
- An adhesive member having a hollow raised portion (described later) protruding to the side where the adhesive layer is not provided is also included in the adhesive member of the present invention.
- this pressure-sensitive adhesive member of the present invention is referred to as “the pressure-sensitive adhesive member B of the present invention”.
- the microneedle array is installed on the top surface of the hollow inner surface of the raised portion of the pressure-sensitive adhesive member B of the present invention.
- the “microneedle patch” means a patch in which a microneedle array is supported on an adhesive layer of an adhesive sheet.
- the patch according to the present invention (hereinafter referred to as “the patch of the present invention") has a microneedle array supported on the surface of the pressure-sensitive adhesive layer of the pressure-sensitive adhesive member of the present invention. Yes (inventive patch A).
- the microneedle array, the microneedle patch, or the present patch A is installed on the top surface of the hollow inner surface of the raised portion of the present adhesive member B (the present patch B).
- a microneedle array is a microplate having a number of microneedles (microneedles) installed on a suitable flat plate.
- the microneedle can normally carry a drug.
- the "microneedle array" in the present invention the patch, it is microneedles in the range of 100 ⁇ 1000 .mu.m are installed 50-1000 present / cm 2 on a suitable flat height. If the number of microneedles is large, the amount of drug loaded can be increased.
- a preferred microneedle height is in the range of 120 to 800 ⁇ m, more preferably in the range of 150 to 600 ⁇ m.
- the material of the flat plate on which the microneedles are installed is not particularly limited as long as the microneedles can be stably installed, and specific examples thereof include metals, plastics, and ceramics. Examples thereof include stainless steel, iron, titanium, polyesters, polycarbonates, polystyrenes, polyolefins, polyacryls, polycycloolefins, silicon, polyethylenes, polypropylenes, and polyvinyl chlorides.
- the material of the microneedle array is not particularly limited as long as the microneedle can be punctured into the skin and can carry a drug, and examples thereof include metals, plastics, and ceramics.
- stainless steel, iron, titanium, polyesters, polycarbonates, polystyrenes, polyolefins, polyacryls, polycycloolefins, and silicon can be used.
- polyesters polyglycolic acid-based biodegradable resins, polylactic acid-based biodegradable resins and the like are preferable from the viewpoint of safety because they are gradually decomposed in vivo.
- the tip diameter of the microneedle is usually in the range of 1 to 20 ⁇ m. In order to enhance the effect of smoothly piercing the patient's skin epidermis layer, those having a tip diameter in the range of 1 to 10 ⁇ m are preferable. On the other hand, if the tip diameter exceeds 30 ⁇ m, resistance when puncturing the skin increases, it is difficult to pierce the skin, and the tip tends to deform, which is not preferable.
- the shape of the microneedle can be appropriately selected depending on the purpose, from a conical shape, a pyramid shape, or a shape in which a cone is provided at the center of the truncated cone.
- the planar shape of the microneedle array is not particularly limited and can be appropriately selected according to the purpose.
- the basic shape includes a polygon (e.g., a quadrangle, a hexagon, an octagon), a circle, and an ellipse.
- it is a square or a polygon.
- the pushing force is not particularly limited as long as it is a force necessary for puncturing the microneedle into the skin. If it is too large, pain will be felt when pushing, so it is preferably in the range of 1 to 200N, more preferably in the range of 1 to 100N. Since the pushing force is limited, a microneedle that smoothly pierces even with a small load is required. For example, when the microneedle array is pushed 10 mm from the skin surface, it is preferable that the puncture property is 80% or more (for example, the microneedle penetrates the stratum corneum and is inserted into the skin). Further, when a force of 20 Newton (N) or more is applied to a substrate having a diameter of 10 mm and pressed against the skin, it is preferable that 80% or more of the microneedles exhibit puncture properties.
- N 20 Newton
- microneedle (array) according to the present invention can be manufactured according to a known manufacturing method.
- the microneedles (array) according to the present invention can be produced according to the production methods described in WO2012 / 057345 and WO2013 / 162053.
- the patch A of the present invention is a pressure-sensitive adhesive member of the present invention having a pressure-sensitive adhesive layer on almost the entire surface of one side of a support, and a microneedle array is supported at the center of the pressure-sensitive adhesive layer.
- the patch A of the present invention shown in FIG. 4 is an example of a patch having a pressure-sensitive adhesive layer on a part of the support. In the pressure-sensitive adhesive member of the present invention having a pair of pressure-sensitive adhesive layers on one side of the support, The microneedle array is directly supported on the support between the pair of pressure-sensitive adhesive layers without using the pressure-sensitive adhesive layer.
- the planar shape of the patch A of the present invention is not particularly limited and can be appropriately selected according to the purpose.
- the basic shape includes a polygon (e.g., a quadrangle, a hexagon, an octagon), a circle, and an ellipse.
- a polygon e.g., a quadrangle, a hexagon, an octagon
- a circle e.g., a hexagon, an octagon
- an ellipse e.g., it is a square or a polygon.
- the microneedle array when applied to the skin without stretching the skin, the microneedle array can be prevented from lifting from the skin due to the elasticity of the skin. Further, according to the patch A of the present invention, when the skin is stretched and applied, it is possible to prevent the microneedle array from lifting from the skin due to skin contraction or skin elasticity.
- the patch B of the present invention is one in which the microneedle array, the microneedle patch, or the patch A of the present invention is installed on the top surface of the hollow inner surface of the raised portion of the adhesive member B of the present invention.
- the thing of each aspect shown in FIG. 5 can be mentioned, for example.
- the opening has an effect of the present invention as shown in FIGS. 5 (f) and 5 (g) even in a closed system surrounded by the opening.
- An open system in which a part thereof is open may be used as long as the above is not impaired.
- the patch B of the present invention comprises a base part (41) (corresponding to an adhesive member) including a support and an adhesive layer, and its base part (41). It has a hollow raised part (5) which protrudes to the side where the adhesive layer is not installed so as to cover the opening provided in the center.
- the raised portion (5) includes a top surface (51) and a side wall (52).
- the side wall (52) is a surface connecting the base (41) and the top surface.
- the pressure-sensitive adhesive layer is provided at least on the entire surface or a part of the surface to be applied to the skin of the base portion (41).
- the pressure-sensitive adhesive layer may be further provided on the top surface (51) and / or the side wall (52).
- both the base portion (41) and the raised portion (5) may be constituted by the adhesive member of the present invention.
- the raised part has an appearance as shown in FIG. 5 and is a so-called “housing”.
- the raised part is heated by softening a pre-extruded film or sheet and then molded by adhering to a mold (vacuum molding), or by injecting molten resin into a cavity in the mold (for example, injection molding) ) Can be produced.
- the raised portion may be formed of the same material as the base portion, or may be formed of a different material. Examples of the material suitable for forming the raised portion (housing) include metals and resins, and materials that are flexible and easily bend and deform are more preferable.
- metals such as aluminum and stainless steel; Examples thereof include resins such as polyethylene, polypropylene, polyethylene terephthalate, polystyrene, nylon, acrylic, silicon, and ABS.
- resins such as polyethylene, polypropylene, polyethylene terephthalate, polystyrene, nylon, acrylic, silicon, and ABS.
- a fold or an edge for promoting deformation is formed on the top surface and / or the side wall.
- the raised portion (5) is easily deformed, and the “fold or edge” is formed inside the top surface. It is formed so that the installed microneedle array can be pushed down against the skin.
- “folds and edges” are usually installed radially from the top surface to the side wall.
- processing such as symmetrical installation on the side wall is performed so that the top surface can move vertically with respect to the skin.
- a reinforcing uneven portion is added to increase the strength of the top and the base. It may be.
- the patch B is at 1.3 MPa ⁇ mm 4 or more, preferably in the range of 1.3MPa ⁇ mm 4 ⁇ 3400MPa ⁇ mm 4, more preferably 1.3MPa ⁇ mm 4 ⁇ 1200MPa / mm 4 in the range of, or in the range of 1.3MPa ⁇ mm 4 ⁇ 730MPamm 4.
- Rigidity is appropriately adjusted according to the thickness, material, and shape of the base portion; the material and shape of the raised portion and the side wall; the number and shape of the folds and edges provided on the top surface and / or the side wall; the shape of the opening, etc. be able to.
- a microneedle array can be incorporated on the top surface (51) of the patch B of the present invention.
- the microneedle array is placed directly on the pressure-sensitive adhesive layer constituting the top surface (51).
- the patch B of the present invention may be equipped with a microneedle patch.
- the microneedle patches incorporated in the patch B of the present invention may be collectively referred to as “internal patches”.
- the internal patch can be the patch A of the present invention.
- the patch B of the present invention in which the patch A of the present invention is embedded above the inner surface of the raised portion is preferable.
- the patch B of the present invention is applied to the skin without stretching the skin, if the patch A of the present invention is embedded in the upper surface of the raised portion, the microneedle array from the skin due to the elasticity of the skin. Lifting can be suppressed.
- the patch B of the present invention is affixed by stretching the skin, and then the patch A of the present invention mounted on the inner surface of the raised portion is separated from the patch B of the present invention and fixed to the skin
- the microneedle can be punctured into the skin while maintaining the elongation of the skin, and the floating of the microneedle array from the skin due to skin contraction or skin elasticity can be suppressed.
- the interior patch may be fixed to the top surface (51) with an adhesive or may be fixed, for example, by locking with a locking claw.
- the interior patch is usually fixed to the patch B of the present invention so as to be easily detachable.
- the internal patch When the internal patch is embedded in the patch B of the present invention, after puncturing the microneedle into the skin, the internal patch is usually removed from the patch B of the present invention and applied to the skin.
- the adhesive for fixing the interior patch to the patch B of the present invention is the back side of the interior patch (the surface on which the microneedles do not protrude), and is installed inside the end of the interior patch. Is preferred. By doing so, the transferability of the internal patch to the skin can be improved. This is because, after the skin puncture of the microneedle, when the internal patch is affixed to the skin and removed from the patch B of the present invention, it is peeled off at the extreme end of the adhesive portion fixing the internal patch to the patch B of the present invention. This is because a large force is applied, which becomes a starting point and the internal patch is easily peeled off.
- FIG. 6 shows an example of the case where the interior patch is fixed by the locking claw in the patch B of the present invention.
- (6) is an internal patch having a locking claw.
- the member which latches a latching claw is not restrict
- the locking member such as the locking hole may be directly and integrally installed on the top surface (51) or the side wall (52).
- the patch B of the present invention When the patch B of the present invention is applied and the skin is fixed after stretching the skin, the patch B of the present invention can be fixed without contracting the skin. Further, the top surface and / or the side wall can be deformed (particularly (b) to (e) in FIG. 5), and by the deformation, the top surface advances to the skin surface, and the microneedle can be inserted into the skin.
- the method for spreading the skin is not particularly limited.
- a method of spreading by hand a method of spreading using a suitable jig that can spread the skin, rubber, etc.
- examples thereof include a method of spreading with an elastic body, a method of bending a joint in the direction in which the skin is pulled, and the like.
- the method of moving / inserting the microneedle array into the skin using the patch of the present invention is not particularly limited.
- the microneedle array is injected by hand, using a spring (coiled, plate-shaped, dome-shaped, etc.) or injected. The method of pressing and inserting can be mentioned.
- the patch of the present invention can be applied to humans, but can also be applied to other animals.
- the application site of the patch of the present invention is not particularly limited, and in the case of humans, for example, the inner and outer sides of the forearm, the back of the hand, the inner and outer sides of the upper arm, the shoulders, the back, the legs, the hips, the abdomen, and the chest. be able to.
- the meaning of other terms relating to the patch of the present invention is as defined above.
- auxiliary tool is an auxiliary tool for puncturing the skin with a microneedle.
- the size of the opening is a size that does not hinder the passage of the macroneedle array or the microneedle patch.
- Rigidity of the present invention aid, although 1.3 MPa ⁇ mm 4 or more, preferably in the range of 1.3MPa ⁇ mm 4 ⁇ 3400MPa ⁇ mm 4, more preferably 1.3MPa ⁇ mm 4 ⁇ 1200MPa ⁇ mm 4 in the range of, or in the range of 1.3MPa ⁇ mm 4 ⁇ 730MPa ⁇ mm 4.
- the rigidity is lower than 1.3 MPa ⁇ mm 4
- even if the skin is stretched after the skin is stretched and the skin is fixed with the auxiliary tool the skin contracts, and there is a possibility that the microneedle patch may not be fixed well even if an attempt is made. is there. It is particularly important that the rigidity has 1.3 MP ⁇ mm 4 or more.
- the assisting device of the present invention is usually a ring-shaped member having an opening at the center as shown in FIGS. 7 (a), (b), and (c).
- the shape of the opening is not particularly limited, and is appropriately selected according to the strength and the puncturing operation of the microneedle array.
- the shape of a circle, an ellipse, and a polygon for example, a quadrangle, a pentagon, a hexagon, and an octagon
- a circle and a quadrangle are preferable.
- the assisting tool of the present invention may be in a form that is not ring-shaped and partially missing as shown in FIGS.
- a peripheral wall suspended from the peripheral end as shown in FIG. 7 (e) may be provided, or a curved structure may be provided as shown in FIG. 7 (f).
- the assisting device of the present invention can prevent skin contraction when the microneedle patch is fixed to the skin surface while the skin is stretched. As a result, the attached microneedle array can be prevented from lifting from the skin.
- FIG. 8 shows a usage example of the assisting tool of the present invention shown in FIG. FIG. 8G shows that the size of the opening does not hinder the passage of the microneedle patch (32).
- the microneedle array can be inserted into the stretched skin by pressing and attaching the microneedle array to the skin surface of the opening. Specifically, after the skin is stretched with a constant force, the stretched state of the skin is fixed by sticking the auxiliary tool of the present invention to the skin while the skin is stretched. Then, the microneedle array and the microneedle patch containing the same are inserted from the opening into the fixed stretched skin.
- FIG. 8 (d) shows an opening having a size that the microneedle patch (32) cannot pass through, but does not hinder the passage of the microneedle array.
- the microneedle patch (32) is fixed in advance to the assisting device of the present invention with an adhesive or a fixing jig, the skin is stretched, and the stretched state of the skin is applied by applying the assisting device of the present invention to the skin.
- the microphone needle array can be inserted into the skin by applying pressure to the microphone needle array or moving the microphone needle array to the skin surface.
- a microneedle array or a microneedle patch may be installed in the opening.
- a support member (31) of a microneedle array is installed in the opening, and the microneedle array (3) is placed on the support member (31).
- the support member (31) may be integrally formed with the assisting tool of the present invention, using the same material as that of the assisting tool of the present invention.
- the support member (31) preferably has sufficient flexibility to move to the skin surface. The flexibility is adjusted by appropriately selecting the material, shape or thickness of the support member (31).
- the microneedle patch to be affixed to the skin with the aid of the present invention is preferably the patch A of the present invention.
- the microneedle patch is applied to the skin without stretching the skin, if the microneedle patch is the patch A of the present invention, lifting of the microneedle array from the skin due to the elasticity of the skin can be suppressed. .
- the microneedle patch is the patch A of the present invention, the lifting of the microneedle array from the skin due to skin contraction or skin elasticity can be suppressed.
- the method for expanding the skin is not particularly limited.
- the method for expanding the skin by hand the method for expanding the skin using an appropriate jig that can expand the skin, and the elastic body such as rubber are used. Examples thereof include a method of bending a joint in a direction in which the skin is pulled and expanding.
- the method for moving and inserting the microneedle array into the skin using the assisting device of the present invention is not particularly limited.
- a method of pushing by hand, using a spring (coiled, plate-like, dome-like, etc.) Examples include a method of inserting by injection or pressing.
- the assisting device of the present invention can be applied to humans, but can also be applied to other animals.
- the application site of the assisting device of the present invention is not particularly limited, and in the case of humans, for example, the inside and outside of the forearm, the back of the hand, the inside and outside of the upper arm, the shoulder, back, legs, buttocks, abdomen, chest, etc. be able to.
- the meanings of other terms relating to the assisting device of the present invention are as defined above.
- the device according to the present invention (hereinafter referred to as “device of the present invention”) is an applicator for moving / applying the microneedle array to the skin, or extending the skin to move the microneedle array to the skin.
- the patch A of the present invention is installed in an applicator for attaching.
- the device of the present invention usually includes a part or all of other accessories necessary for drug administration, and can be referred to as a drug administration device.
- the patch A (microneedle array) of the present invention can be effectively applied to the skin. Examples of the “applicator for moving and sticking the microneedle array to the skin” include those shown in FIGS. 5 and 6.
- Examples of the “applicator for stretching the skin and moving and sticking the microneedle array to the skin” include those shown in FIGS. 9 to 12, for example.
- the applicator according to FIGS. 9 to 12 has, in particular, a skin stretching mechanism (9) for stretching the skin and an application mechanism (10) for moving and attaching the microneedle array to the skin.
- the patch A of the present invention is usually engaged or adhered to the applicator or the skin stretching mechanism (9) structurally by means such as fitting, or with an adhesive or the like.
- FIG. 11 the installation method of this invention patch A to the said applicator by an adhesive is illustrated.
- the patch A of the present invention is usually removed from the applicator and stuck to the skin.
- the adhesive for fixing the patch A of the present invention to the applicator is the patch A of the present invention. It is the back side (surface where the microneedle does not protrude), and it is preferable to install inside the end of the patch A of the present invention. By doing so, the transferability of the patch A of the present invention to the skin can be improved.
- the device of the present invention has a structure in which the portion (12) having the patch A of the present invention is not directly adhered or engaged with the applicator or the skin stretching mechanism (9). But you can.
- the part (12) having the patch A of the present invention is placed without being crimped to the skin, and then the part (12) having the patch A of the present invention and the skin stretch. The position is adjusted according to the shape of the functional part (9), and the microneedle array is moved, inserted, and stuck to the skin stretched by the skin stretching mechanism part (9) (see FIG. 13).
- a cut-out structure with both ends cut see the right side of FIG. 12 (a)
- a structure having a hollow portion (13) at both end portions Refer to the right of the figure).
- the position may be adjusted by visual observation.
- the device of the present invention also has a form in which the patch A of the present invention is combined with an applicator that has a hollow raised portion like the patch B of the present invention and can move / paste the microneedle array to the skin. included.
- this invention patch A (it becomes an interior patch) to the said hollow part, it may be fixed with an adhesive or may be physically fixed by the insertion by a protrusion etc.
- the patch A of the present invention is usually removed from the applicator and applied to the skin.
- the adhesive for fixing the patch A of the present invention to the applicator is the back side of the patch A of the present invention.
- the surface on which the microneedles do not protrude is preferably installed on the inner side of the end of the patch A of the present invention.
- the transferability of the patch A of the present invention to the skin can be improved. This is because, when the patch A of the present invention is applied to the skin and removed from the applicator after the puncture of the microneedle, the force peeled off at the extreme end of the adhesive portion fixing the patch A of the present invention to the applicator is greatly applied. This is because the patch of the present invention is easily peeled off.
- the fitting member (7) of the patch A of the present invention (internal patch (6)) needs to have a certain level of rigidity. If the rigidity is not appropriate, the fitting may be weak and may not be fixed.
- the rigid preferably 1.3 MPa ⁇ mm 4 or more, more preferably in the range of 1.3MPa ⁇ mm 4 ⁇ 3400MPa ⁇ mm 4, more preferably in the range of 1.3MPa ⁇ mm 4 ⁇ 1200MPa ⁇ mm 4 Or 1.3 MPa ⁇ mm 4 to 730 MPa ⁇ mm 4 .
- the planar shape is not particularly limited, but has a projection, a depression or a cavity for fitting.
- the adhesive patch is not installed in the portion where each of the patch A of the present invention (inner patch (6)) and the fitting member (7) is fitted, and the patch A of the present invention (inner patch (6)).
- the fitting member (7) are preferably not adhered to each other.
- the fitting member (7) may be adhered or adhered to the raised portion (5) or may be integrated.
- FIG. 6 shows an example of installation by fitting, the fitting shape is not particularly limited.
- the device of the present invention may be provided with an indicator for sensing stress.
- the device of the present invention can be applied to humans, but can also be applied to other animals.
- the application site of the device of the present invention is not particularly limited, and in the case of humans, for example, the inside and outside of the forearm, the back of the hand, the inside and outside of the upper arm, the shoulder, back, legs, buttocks, abdomen, chest, etc. Can do.
- the meanings of other terms relating to the device of the present invention are as defined above.
- Example 1 Correlation between rigidity and floating of tape (patch) (1) Determination of rigidity (1-1) Test method According to Japanese Industrial Standard (JIS K7171), a three-point bending test shown in FIG. The rigidity of the test piece (corresponding to the support of the pressure-sensitive adhesive of the present invention or the patch of the present invention, the same applies hereinafter) was determined.
- the specific test method is as follows. The test piece was placed on two support bases, a force was applied to the central portion with an indenter, the test piece was bent at a constant speed, and the force and deflection applied to the test piece were measured. An example of the load curve of the obtained test results is shown in FIG.
- test pieces with low rigidity were attached to the test piece, and measured as a test piece with a PET sheet together with the PET sheet. And it measured also about the PET sheet single-piece
- Test pieces with low rigidity Micropore (registered trademark, manufactured by 3M), Blenderm (registered trademark, manufactured by 3M), Transpore (registered trademark, manufactured by 3M), Durapore (registered trademark, manufactured by 3M), pore tape (Registered trademark, manufactured by Million)
- the PET tape was obtained by attaching a 0.1 mm-thick double-sided tape (J0990, manufactured by Nitoms) to a PET sheet.
- Rigidity calculation method The rigidity can be calculated by the following equation.
- Rigidity (K) flexural modulus (E) ⁇ secondary moment of inertia (I)
- a bending elastic modulus (E) and a cross-sectional secondary moment (I) are calculated
- the bending stress ( ⁇ i ) is calculated by the following formula 2. Note that F is a value in the deflections s 1 and s 2 calculated by Equation 1 based on the result of the load curve.
- the bending elastic modulus (E f , MPa) can be calculated by the following mathematical formula 3.
- Equation 4 The second moment of inertia (I) can be calculated by the following Equation 4.
- Example 2 Relationship between rigidity and stress applied to microneedle (evaluation of stress applied to microneedle) (1) Creation of human skin model A silicon sheet (15 mm thick) having a hardness of 5 degrees was used as a human skin model. In addition, the stress curve equivalent to the comparison of the elasticity of this model and the elasticity of the skin was drawn.
- a PET plate having a thickness of 10 mm ⁇ 10 mm ⁇ 1 mm was placed as a microneedle array, and a test piece having a hole with a diameter of 8 mm was placed thereon.
- the plunger was placed in contact with the upper surface of the PET plate instead of the microneedle array through the hole of the test piece.
- the lifting part was lowered by 10 mm, and the stress applied to the PET plate as a substitute for the microneedle array was measured.
- the pushing jig attached to the elevating part pushes down the test piece through the spacer, and the PET plate is pushed down by the plunger in synchronization with the test piece being pushed down. Since the load cell is connected to the PET plate via the plunger and is not joined to the test piece, the force that the test piece receives from the human skin model is not measured. Therefore, only the stress applied to the PET plate is measured as the measurement data. In this test, the test piece had no adhesive layer and was a single PET plate.
- the patch of the present invention, the device of the present invention, and the auxiliary tool of the present invention improve the puncture property of the microneedles, can firmly fix the microneedle array to the skin, and dose the drugs quantitatively without waste. Therefore, it is useful as a medicine.
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Abstract
Description
しかし、バネの力で射出あるいは押圧する方法や手の力で押圧する方法によって皮膚を穿刺し貼付されたマイクロニードルアレイは、皮膚の反発力のために、皮膚から浮き上がることが起こり、充分な薬剤の注入効果が得られなくなる現象が問題となっている。特に、マイクロニードルアレイの皮膚穿刺性を向上させるために、皮膚に張力を掛けて引っ張り、マイクロニードルアレイを貼付する場合に、より顕著に皮膚が収縮してマイクロニードルアレイを浮き上がることになる。
本発明の主な課題は、皮膚への固定性ないしマイクロニードルの穿刺性に優れた新たなマイクロニードル貼付剤を提供することである。また、そのための粘着部材を提供することも課題とする。
まず、皮膚を伸張せずにマイクロニードルアレイを貼付すれば、図1(A)に示すように、皮膚の弾性により、マイクロニードルアレイが浮き上がることになる。一方、皮膚を伸張させてマイクロニードルの穿刺性を高めた後に、マイクロニードルアレイを貼付すれば、図1(B)に示すように穿刺後の皮膚の弛緩により、マイクロニードルアレイが浮き上がることになる。
本発明者らは、適度な剛性を備えた粘着部材で皮膚を粘着固定すれば、貼付したマイクロニードルアレイの浮き上がりを防止することができることを見出した(図2参照)。
[1]支持体の片面上に感圧性粘着剤が設置されており、剛性が1.3MPa・mm4以上であることを特徴とする、粘着部材。
[2]剛性が1.3~3400MPa・mm4の範囲内である、上記[1]に記載の粘着部材。
[3]剛性が1.3~1200MPa・mm4の範囲内である、上記[1]に記載の粘着部材。
[4]剛性が1.3~730MPa・mm4の範囲内である、上記[1]に記載の粘着部材。
[5]支持体が樹脂製である、上記[1]~[4]いずれか一項に記載の粘着部材。
[6]マイクロニードルアレイを担持するための、上記[1]~[5]いずれか一項に記載の粘着部材。
[8]貼付剤、粘着剤層、及びマイクロニードルアレイの少なくとも1つの平面形状が、多角形、四角形、円形、又は楕円形である、上記[7]に記載の貼付剤。
かかる開口部の大きさがマクロニードルアレイないしマイクロニードル貼付剤の通過に支障のないサイズであり、当該開口部を覆うように、粘着剤層が設置されていない側に突出した、中空の盛り上がり部を有する、粘着部材。
[10]上記[9]に記載の粘着部材の盛り上がり部の中空内面の天面上に、マイクロニードルアレイ、マイクロニードル貼付剤、又は上記[7]若しくは[8]に記載の貼付剤が設置されている、貼付剤。
[11]前記盛り上がり部の天面及び/又は側壁が変形し、マイクロニードルアレイが皮膚面側に移動可能となっている、上記 [10]に記載の貼付剤。
[12]前記天面及び/又は側壁には、変形を促すための折り目やエッジが形成されている、上記[11]に記載の貼付剤。
上記[1]~[6]いずれか一項に記載の粘着部材において、中央部分が開口しており、
かかる開口部の大きさがマクロニードルアレイないしマイクロニードル貼付剤の通過に支障のないサイズであることを特徴とする、補助具。
[14]上記[13]に記載の補助具の開口部にマイクロニードルアレイないしマイクロニードル貼付剤が設置されるように、当該補助具とマイクロニードルアレイ、マイクロニードル貼付剤、又は上記[7]若しくは[8]に記載の貼付剤とが組み合わされている、貼付剤。
マイクロニードルの穿刺対象の皮膚の状態は年齢により大きく異なっている。例えば、皮膚の伸縮性と弾力性は、子供、大人、老人となるに従い、伸縮性と弾力性が乏しくなって行く。そのため、マイクロニードルの穿刺性も大きな影響を受ける。本発明によれば、マイクロニードルの安定した穿刺性と薬物投与の定量性を図りながら、皮膚の弾力性に基づく穿刺性のバラツキを回避することができる。あるいは本発明によれば、皮膚弾性又は皮膚収縮に基づくマイクロニードルアレイの皮膚からの浮き上がり現象を避けることができる。その結果、マイクロニードルアレイに担持された薬物の必要量の投与が達成できる。即ち、皮膚の穿刺方向への反発によるマイクロニードル(アレイ)の皮膚からの浮き上がりを回避することができ、あるいは皮膚を伸張して穿刺を向上させ、貼付した後のマイクロニードル(アレイ)の皮膚から浮き上がりを回避することができるので、マイクロニードルによる定量的な薬剤投与が可能となる。
本発明に係る粘着部材(以下、「本発明粘着部材」という。)は、支持体の片面上に感圧性粘着剤が設置されており、剛性が1.3MPa・mm4以上であることを特徴とする。
なお、マイクロニードルアレイには15N以上の応力が掛かることが好ましく、20N以上の応力が掛かることがより好ましい。
本発明粘着部材の平面形状は特に制限されず、目的に応じて適宜選択することができる。例えば、基本形状として、多角形(例、四角形、六角形、八角形)、円形、楕円形が挙げられる。好ましくは、四角形ないし多角形である。
また、上記本発明粘着部材において、中央部分が開口しており、かかる開口部の大きさがマクロニードルアレイないしマイクロニードル貼付剤の通過に支障のないサイズであり、当該開口部を覆うように、粘着剤層が設置されていない側に突出した、中空の盛り上がり部(後述)を有する粘着部材も本発明粘着部材に含まれる。以下、かかる本発明粘着部材を「本発明粘着部材B」という。その場合、マイクロニードルアレイは、本発明粘着部材Bの盛り上がり部の中空内面の天面上に設置される。
ここで、「マイクロニードル貼付剤」とは、粘着シートの粘着剤層上にマイクロニードルアレイが担持されている貼付剤を意味する。
本発明に係る貼付剤(以下、「本発明貼付剤」という。)は、本発明粘着部材の粘着剤層側の面に、マイクロニードルアレイが担持されているものである(本発明貼付剤A)。あるいは本発明粘着部材Bの盛り上がり部の中空内面の天面上に、マイクロニードルアレイ、マイクロニードル貼付剤、又は本発明貼付剤Aが設置されているものである(本発明貼付剤B)。
マイクロニードルアレイは、適当な平板上に相当数のマイクロニードル(微小針)が設置されているものである。当該マイクロニードルは、通常、薬剤を担持することができる。
本発明貼付剤における「マイクロニードルアレイ」には、高さが100~1000μmの範囲内のマイクロニードルが適当な平板上に50~1000本/cm2設置されている。マイクロニードルの本数が多ければ薬剤担持量を上げることができる。好ましいマイクロニードルの高さは、120~800μmの範囲内、より好ましくは150~600μmの範囲内である。
マイクロニードルアレイの平面形状は特に制限されず、目的に応じて適宜選択することができる。例えば、基本形状として、多角形(例、四角形、六角形、八角形)、円形、楕円形が挙げられる。好ましくは、四角形ないし多角形である。
本発明貼付剤Aには、本発明粘着部材の粘着剤層側の面に、マイクロニードルアレイが担持されている。具体的には、例えば、図3や図4に示す態様のものを挙げることができる。
図3に示す本発明貼付剤Aは、支持体の片面ほぼ全面に粘着剤層を有する本発明粘着部材において、その粘着剤層上の中央に、マイクロニードルアレイが担持されている。図4に示す本発明貼付剤Aは、支持体の一部に粘着剤層を有する貼付剤の一例であり、支持体の片面の左右に一対の粘着剤層を有する本発明粘着部材において、その一対の粘着剤層の間の支持体上に、粘着剤層を介さず直接マイクロニードルアレイが担持されている。
本発明貼付剤Bは、本発明粘着部材Bの盛り上がり部の中空内面の天面上に、マイクロニードルアレイ、マイクロニードル貼付剤、又は本発明貼付剤Aが設置されているものである。具体的には、例えば、図5に示す各態様のものを挙げることができる。 開口部は、図5(a)~(e)に示されるように、周りが取り囲まれた閉鎖系であっても、図5(f)や(g)に示されるように、本発明の効果を損なわない範囲で、一部が開いている状態の開放系であってもよい。
ある実施態様において、本発明貼付剤Bは図5(a)に示されるように、支持体と粘着剤層とを含む基底部(41)(粘着部材に相当)と、その基底部(41)の中央に設けられた開口部を覆うように、粘着剤層が設置されていない側に突出した、中空の盛り上がり部(5)を有する。盛り上がり部(5)は、天面(51)と、側壁(52)とを含む。側壁(52)は、基底部(41)と天面を繋ぐ面である。粘着剤層は、少なくとも基底部(41)の皮膚に貼付される面の全体又は一部に設けられる。粘着剤層は、更に、天面(51)及び/又は側壁(52)に設けられていてもよい。本発明貼付剤Bは、基底部(41)及び盛り上がり部(5)の両方が本発明粘着部材により構成されていてもよい。
なお、指等での押圧操作により、天面や基底部に不均等な力が掛かった時の変形を防止するため、天面及び基底部の強度を増すために補強用の凹凸部が付加されていてもよい。
ある実施態様において、本発明貼付剤Bには、マイクロニードル貼付剤が内装され得る。以下、本発明貼付剤Bに内装されたマイクロニードル貼付剤を総称して「内装貼付剤」と称する場合がある。内装貼付剤は、本発明貼付剤Aであり得る。そして、通常、当該中空部分の天面及び/又は側壁が変形し、マイクロニードルアレイが皮膚面側に移動可能となっている。
本発明貼付剤を使用するに際して、皮膚を拡げる方法としては特に制限されないが、例えば、手で拡げる方法、皮膚を拡げることができる適当な治具を用いて拡げる方法、ゴムなどの弾性体で拡げる方法、皮膚が引っ張られる方向に関節を曲げて拡げる方法などを挙げることができる。また、本発明貼付剤によるマイクロニードルアレイの皮膚への移動・挿入方法としては特に制限されないが、例えば、手で押し込み方法、バネ(コイル状、板状、ドーム状など)を使用して射出あるいは押圧して挿入する方法などを挙げることができる。
本発明貼付剤に係るその他の用語の意義などについては、前記と同義である。
本発明に係る補助具(以下、「本発明補助具」という。)は、マイクロニードルを皮膚に穿刺するための補助具であって、本発明粘着部材において、中央部分が開口しており、かかる開口部の大きさがマクロニードルアレイないしマイクロニードル貼付剤の通過に支障のないサイズであることを特徴とする。
また、本発明補助具は、本発明の効果を損なわない範囲で、リング状ではない、図7(k)(l)に示すような一部が欠けた形態のものでもよい。
更に、剛性を向上させるために、図7(e)に示されるように周端部から垂設された周壁を設けたり、図7(f)に示されるように湾曲構造を設けてもよい。
本発明補助具に係るその他の用語の意義などについては、前記と同義である。
本発明に係るデバイス(以下、「本発明デバイス」という。)は、マイクロニードルアレイを皮膚に移動・貼付するためのアプリケーター又は皮膚を伸張しマイクロニードルアレイを皮膚に移動・貼付するためのアプリケーターに、本発明貼付剤Aが設置されている。本発明デバイスは、通常、その他にも薬剤投与に必要な付属品の一部又は全部を備えており、薬剤の投与装置ということができる。本発明デバイスに係るアプリケーターにより、本発明貼付剤A(マイクロニードルアレイ)を効果的に皮膚に貼付することができる。
上記「マイクロニードルアレイを皮膚に移動・貼付するためのアプリケーター」としては、例えば、図5や図6に示すような形態のものを挙げることができる。また、上記「皮膚を伸張しマイクロニードルアレイを皮膚に移動・貼付するためのアプリケーター」としては、例えば、図9~12に示すような形態のものを挙げることができる。図9~12に係るアプリケーターは、特に、皮膚を伸張するための皮膚伸張機構部(9)とマイクロニードルアレイを皮膚に移動し貼付するための貼付機構部(10)とを有する。
また,本発明デバイスには、応力を感知するインジケータを備えていてもよい。
本発明デバイスに係るその他の用語の意義などについては、前記と同義である。
(1)剛性の求め方
(1-1)試験方法
日本工業規格(JIS K7171)に準じて、図13に示す3点曲げ試験により、試験片(本発明粘着剤ないし本発明貼付剤の支持体に相当。以下同じ。)の剛性を求めた。具体的な試験方法は、以下の通りである。
試験片を二つの支持台に載せ、中央部分に圧子で力を加え、一定速度でたわませ、試験片に加えた力及びたわみを測定した。得られた試験結果の荷重曲線の一例を図14に示す。
試験速度:1mm/min
支点間距離:12mm
試験片:幅10~20mm、長さ30mm
剛性が低い試験片:マイクロポア(登録商標、スリーエム社製)、ブレンダーム(登録商標、スリーエム社製)、トランスポア(登録商標、スリーエム社製)、デュラポア(登録商標、スリーエム社製)、ポアテープ(登録商標、ミリオン社製)
剛性は、次の式により算出することができる。
剛性(K)=曲げ弾性率(E)×断面2次モーメント(I)
なお、曲げ弾性率(E)及び断面2次モーメント(I)は、以下のようにして求める。
まず、次の数式1から曲げ歪み(εf1=0.0005及びεf2=0.0025)に相当するたわみs1及びs2を算出する。
断面2次モーメント(I)は、次の数式4により算出することができる。
(2-1)評価方法
マイクロニードルアレイの代りとして10mm×10mm×1mm厚のPET板を中央に装着したテープをヒト前腕内側中央付近に、およそ40Nで押圧し前腕に粘着させた。約1分後、テープの浮きの程度を目視で観察した。評価としては、次の基準に従った。
○ = テープの浮きが殆どなく良
◎ = テープの浮きがなく良
各テープ(貼付剤)について、浮きと剛性との相関をまとめた。その結果を表1に示す。
(1)ヒト皮膚モデルの作成
硬度5度のシリコンシート(15mm厚)をヒト皮膚モデルとした。なお、本モデルの弾性と皮膚の弾性を比較したところと同等の応力曲線を描いた。
当該測定は、図16に示すような装置を用いて行った。当該装置の昇降部には、ロードセル、5mmφのプランジャー、10mm×10mm×H20mmのスペーサー、そして押込み治具が取り付けられている。押込み治具は装置昇降部に図16のように取り付けられ、スペーサーには8mmφの貫通穴を設け、ロードセルに接続したプランジャーはその穴を貫通する。
昇降部を10mm降下させ、マイクロニードルアレイの代わりであるPET板に掛かる応力を測定した。
試験速度:60mm/min
図17に示す通り、試験片の剛性が高くなるに従い、PET版(疑似マイクロニードルアレイ)に掛かる応力は減少した。そして、マイクロニードルアレイに15Nの応力以上を掛けるにはPET版(疑似マイクロニードルアレイ)の剛性は、3400MPa・mm4以下であることが必要であり、マイクロニードルアレイに20N以上の応力を掛けるには、PET版(疑似マイクロニードルアレイ)の剛性は、730MPa・mm4以下であることが必要であることが示された。
1 支持体
2 粘着剤層
3 マイクロニードルアレイ
4 粘着部材
41 基底部
5 盛り上がり部
51 天面
52 側壁
6 内装貼付剤
7 嵌め合わせ部材
8 押圧部
9 皮膚伸張機構部
10 貼付機構部
11 粘着部分
12 本発明貼付剤Aを有する部分
13 空洞部
Claims (15)
- 支持体の片面上に感圧性粘着剤が設置されており、剛性が1.3MPa・mm4以上であることを特徴とする、粘着部材。
- 剛性が1.3~3400MPa・mm4の範囲内である、請求項1に記載の粘着部材。
- 剛性が1.3~1200MPa・mm4の範囲内である、請求項1に記載の粘着部材。
- 剛性が1.3~730MPa・mm4の範囲内である、請求項1に記載の粘着部材。
- 支持体が樹脂製である、請求項1~4いずれか一項に記載の粘着部材。
- マイクロニードルアレイを担持するための、請求項1~5いずれか一項に記載の粘着部材。
- 請求項6に記載の粘着部材の粘着剤層側の面に、マイクロニードルアレイが担持されている、貼付剤。
- 貼付剤、粘着剤層、及びマイクロニードルアレイの少なくとも1つの平面形状が、多角形、四角形、円形、又は楕円形である、請求項7に記載の貼付剤。
- 請求項1~6いずれか一項に記載の粘着部材において、中央部分が開口しており、
かかる開口部の大きさがマクロニードルアレイないしマイクロニードル貼付剤の通過に支障のないサイズであり、当該開口部を覆うように、粘着剤層が設置されていない側に突出した、中空の盛り上がり部を有する、粘着部材。 - 請求項9に記載の粘着部材の盛り上がり部の中空内面の天面上に、マイクロニードルアレイ、マイクロニードル貼付剤、又は請求項7若しくは8に記載の貼付剤が設置されている、貼付剤。
- 前記盛り上がり部の天面及び/又は側壁が変形し、マイクロニードルアレイが皮膚面側に移動可能となっている、請求項10に記載の貼付剤。
- 前記天面及び/又は側壁には、変形を促すための折り目やエッジが形成されている、請求項11に記載の貼付剤。
- マイクロニードルを皮膚に穿刺するための補助具であって、
請求項1~6いずれか一項に記載の粘着部材において、中央部分が開口しており、
かかる開口部の大きさがマクロニードルアレイないしマイクロニードル貼付剤の通過に支障のないサイズであることを特徴とする、補助具。 - 請求項13に記載の補助具の開口部にマイクロニードルアレイないしマイクロニードル貼付剤が設置されるように、当該補助具とマイクロニードルアレイ、マイクロニードル貼付剤、又は請求項7若しくは8に記載の貼付剤とが組み合わされている、貼付剤。
- マイクロニードルアレイを皮膚に移動・貼付するためのアプリケーター又は皮膚を伸張しマイクロニードルアレイを皮膚に移動・貼付するためのアプリケーターに、請求項7若しくは8に記載の貼付剤が設置されている、マイクロニードルアレイのデバイス。
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| JP2020506533A JPWO2019176900A1 (ja) | 2018-03-13 | 2019-03-12 | 粘着部材、及びマイクロニードル貼付剤 |
| CN201980018439.8A CN111836662A (zh) | 2018-03-13 | 2019-03-12 | 粘合构件和微针贴剂 |
| ES19768013T ES3034959T3 (en) | 2018-03-13 | 2019-03-12 | Adhesion member and microneedle patch |
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| US20230255279A1 (en) * | 2022-02-11 | 2023-08-17 | Abdallah ALASRAJ | Thighs protector |
| CN116236682A (zh) * | 2022-12-30 | 2023-06-09 | 苏州纳通生物纳米技术有限公司 | 振动透皮贴片和透皮给药贴片组件 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021251464A1 (ja) * | 2020-06-12 | 2021-12-16 | 株式会社メドレックス | アプリケータ、マイクロニードルパッチキット、及び穿刺方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3766537A4 (en) | 2022-05-04 |
| ES3034959T3 (en) | 2025-08-27 |
| CN111836662A (zh) | 2020-10-27 |
| JPWO2019176900A1 (ja) | 2021-03-11 |
| EP3766537B1 (en) | 2025-06-11 |
| EP3766537A1 (en) | 2021-01-20 |
| US20210008360A1 (en) | 2021-01-14 |
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