WO2015068702A1 - アプリケータ - Google Patents
アプリケータ Download PDFInfo
- Publication number
- WO2015068702A1 WO2015068702A1 PCT/JP2014/079272 JP2014079272W WO2015068702A1 WO 2015068702 A1 WO2015068702 A1 WO 2015068702A1 JP 2014079272 W JP2014079272 W JP 2014079272W WO 2015068702 A1 WO2015068702 A1 WO 2015068702A1
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- WO
- WIPO (PCT)
- Prior art keywords
- protrusion
- piston plate
- microneedle
- skin
- applicator
- Prior art date
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Classifications
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- 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
- 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
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- 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
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- 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
- One aspect of the present invention relates to an applicator for transferring an active ingredient into the body through the skin by puncturing the skin.
- an applicator that holds a microneedle array having a large number of microneedles coated with a drug or the like at the tip by a latch mechanism or the like is known (see Patent Documents 1 to 5).
- the latch mechanism By releasing the latch mechanism and causing the microneedle array held by the applicator to collide with the skin, the microneedle pierces the skin, and the active ingredient contained in the drug or the like passes through the skin to the animal (for example, human) To the body.
- the microneedle array collides with the skin due to the opening of the latch mechanism, the microneedle array may bounce off the skin due to the elastic force of the skin. In that case, the microneedle once punctured into the skin may come off from the skin and affect the transfer of the active ingredient into the body.
- an object of one aspect of the present invention is to provide an applicator that can sufficiently transfer an active ingredient into the body.
- An applicator is an applicator for transferring an active ingredient into the body through the skin by puncturing the skin with a microneedle, and includes a first protrusion and at least one second
- the protrusion is provided with a piston plate provided on one main surface, the microneedle is disposed on the surface of the first protrusion, and the second protrusion is in a state of being separated from the first protrusion. It arrange
- At least one second protrusion is disposed around the first protrusion in a state of being separated from the first protrusion. Therefore, even if the first protrusion collides with the skin and undulations occur in the skin (even if the skin undulates), the undulations are weakened by the second protrusions. Moreover, it becomes difficult for the piston plate to bounce off the skin. Therefore, the microneedle once punctured into the skin is likely to stay in the skin. As a result, the active ingredient can be sufficiently transferred into the body.
- the second projecting portion may be provided with an adhesive substance having adhesiveness in at least a part of the surface thereof.
- the adhesive substance tries to stick to the skin. Therefore, the rebound from the skin of the piston plate can be further suppressed.
- the piston plate is provided with a plurality of second protrusions, and the plurality of second protrusions may be disposed so as to surround the first protrusion.
- the second protrusion may have an annular shape that surrounds the entire periphery of the first protrusion.
- the portion between the first protrusion and the second protrusion may constitute a recess that is recessed from the surface of these protrusions.
- the swell of the skin can be absorbed in the recess. Therefore, the rebound from the skin of the piston plate can be further suppressed.
- An applicator is an applicator for transferring an active ingredient into the body through the skin by puncturing the skin of the microneedle, and the microneedle array in which the microneedle is provided in a predetermined region
- a piston plate that transmits an impact force to the microneedle array when one of the main surfaces collides, and the piston plate is provided on one of the main surfaces and is separated from a predetermined region of the microneedle array.
- At least one protrusion is disposed so as to surround the microneedle array.
- At least one protrusion is provided on one main surface of the piston plate so as to surround the microneedle array in a state of being separated from a predetermined region of the microneedle array. It has been. Therefore, even if the piston plate collides with the microneedle array arranged on the skin in advance and the skin is swelled (even if the skin is undulated), the swell is weakened by the protrusion. Moreover, it becomes difficult for the piston plate to bounce off the skin. Therefore, the microneedle once punctured into the skin is likely to stay in the skin. As a result, the active ingredient can be sufficiently transferred into the body.
- At least one protrusion may be provided with an adhesive substance having adhesiveness in at least a part of the surface thereof.
- the adhesive substance tries to stick to the skin. Therefore, the rebound from the skin of the piston plate can be further suppressed.
- the piston plate is provided with a plurality of protrusions, and the plurality of protrusions may be arranged so as to surround the microneedle array.
- the protruding portion may have an annular shape surrounding the entire periphery of the microneedle array.
- the portion between the predetermined region of the microneedle array and the protruding portion may constitute a recessed portion that is recessed from the surface of the predetermined region and the protruding portion.
- the swell of the skin can be absorbed in the recess. Therefore, the rebound from the skin of the piston plate can be further suppressed.
- An applicator according to another aspect of the present invention is an applicator for transferring an active ingredient into the body through the skin by puncturing the skin of the microneedle, and the microneedle region where the microneedle is located and at least one protrusion And a projecting portion is arranged around the microneedle region in a state of being separated from the microneedle region.
- At least one protrusion is disposed around the microneedle region in a state of being separated from the microneedle region. Therefore, even if the surface on which the microneedles are provided collides with the skin and the skin undulates (even if the skin undulates), the undulation is weakened by the protrusion. Moreover, it becomes difficult for the piston plate to bounce off the skin. Therefore, the microneedle once punctured into the skin is likely to stay in the skin. As a result, the active ingredient can be sufficiently transferred into the body.
- microneedle region in this aspect of the present invention is a concept corresponding to the “first projecting portion” in the application of the priority claim of the present application, and “at least one projecting portion” "At least one second protrusion” in the base application.
- a first protrusion is provided in the microneedle region, at least one protrusion is at least one second protrusion, a microneedle is disposed on the surface of the first protrusion, and the second protrusion May be arranged around the first protrusion in a state of being separated from the first protrusion.
- the second projecting portion may be provided with an adhesive substance having adhesiveness in at least a part of the surface thereof.
- the adhesive substance tries to stick to the skin. Therefore, the rebound from the skin of the piston plate can be further suppressed.
- the piston plate is provided with a plurality of second protrusions, and the plurality of second protrusions may be disposed so as to surround the first protrusion.
- the second protrusion may have an annular shape that surrounds the entire periphery of the first protrusion.
- the portion between the first protrusion and the second protrusion may constitute a recess that is recessed from the surface of these protrusions.
- the swell of the skin can be absorbed in the recess. Therefore, the rebound from the skin of the piston plate can be further suppressed.
- the height difference between the tip surface of the at least one protrusion and the tip of the microneedle protruding outward from the tip surface may be 0 mm or more. Puncture performance can be improved by setting the height difference in this way.
- the height difference may be 0 to 1.0 mm. Puncture performance can be improved by setting the height difference in this way.
- the value D / F may be 0.0 to 1.4, where D is the height difference and F is the average length of the microneedles. Puncture performance can be improved by setting the height difference in this way.
- the value D / F may be 1.0 to 1.4. Puncture performance can be improved by setting the height difference in this way.
- an applicator capable of sufficiently transferring an active ingredient into the body can be provided.
- FIG. 1 is a perspective view of the applicator according to this embodiment as viewed from above.
- FIG. 2 is a perspective view of the applicator according to this embodiment as viewed from below.
- FIG. 3 is a front view of the applicator according to the present embodiment.
- FIG. 4 is a rear view of the applicator according to the present embodiment.
- FIG. 5 is a plan view of the applicator according to the present embodiment.
- FIG. 6 is a bottom view of the applicator according to the present embodiment.
- FIG. 7 is a right side view of the applicator according to the present embodiment.
- FIG. 8 is a left side view of the applicator according to the present embodiment.
- 9 is a cross-sectional view taken along line IX-IX in FIG. FIG.
- FIG. 10 is an exploded perspective view of the applicator according to the present embodiment.
- FIG. 11 is a top view of the applicator according to the present embodiment, showing a state before operation in a state where the lid is removed.
- FIG. 12 is a top view showing the main body.
- FIG. 13 is a perspective view of the piston plate as viewed from above.
- FIG. 14 is a perspective view of the piston plate as viewed from below.
- FIG. 15 is a plan view of the piston plate.
- FIG. 16 is a bottom view of the piston plate.
- FIG. 17 is a front view of the piston plate.
- 18 is a cross-sectional view taken along line XVIII-XVIII in FIG. 19 is a cross-sectional view taken along line XIX-XIX in FIG.
- FIG. 20 is a perspective view partially showing the microneedle array.
- 21 is a cross-sectional view taken along line XXI-XXI in FIG.
- FIG. 22 is a cross-sectional view showing a conical coil spring.
- FIG. 23 is a perspective view showing the lower surface side of the release member.
- FIG. 24 is a cross-sectional view showing a state after the operation of the applicator according to the present embodiment.
- FIG. 25 is a top view showing a state after the operation with the lid portion removed in the applicator according to the present embodiment.
- 26 is a sectional view taken along line XXVI-XXVI in FIG.
- FIG. 27 is a diagram for explaining how the piston plate collides with the skin.
- FIG. 28 is a diagram showing another example of the piston plate.
- FIG. 29 is a diagram showing another example of the piston plate.
- FIG. 30 is a diagram illustrating another example of the piston plate.
- FIG. 31 is a diagram showing another example of the piston plate.
- FIG. 32 is a view showing another example of the piston plate.
- FIG. 33 is a diagram illustrating another example of the coil spring.
- FIG. 34 is a perspective view partially showing a microneedle array according to a modification.
- FIG. 35 is a diagram for explaining the embodiment.
- FIG. 36 is a diagram schematically showing a part of the piston and the microneedle array in the example.
- FIG. 37 is a graph showing the results of the example.
- FIG. 38 is a graph showing the results of the example.
- FIG. 39 is a graph showing the results of the example.
- FIG. 40 is a graph showing the results of the example.
- FIG. 41 is a graph showing the results of the example.
- FIG. 42 is a graph showing the results of the example.
- the applicator A is a device for transferring an active ingredient such as a drug into the animal body through the skin of an animal such as a human by puncturing the skin of a microneedle 32 (described later in detail).
- the applicator A includes a housing 10, a piston plate 20, a microneedle array 30, a conical coil spring 40, and a release member 50.
- the housing 10 includes a main body 12 having a cylindrical shape whose central axis extends in the vertical direction, and a lid 14 disposed on the upper end side of the main body 12. .
- the housing 10 has a strength capable of maintaining the biasing force of the conical coil spring 40 (described in detail later).
- a material of the housing 10 in addition to a synthetic or natural resin material such as polycarbonate resin, ABS resin, polystyrene, polypropylene, polyacetal (POM), etc., silicon, silicon dioxide, ceramic, metal (stainless steel, titanium, nickel, Molybdenum, chromium, cobalt, etc.) can be exemplified.
- glass fibers, carbon fibers, and the like may be added to the resin material.
- Applicator A is desirable to have a shape that is easy to hold and is easy to apply (easy to puncture) microneedles 32 (described later) to the skin of animals (including humans). Therefore, the outer shape of the main body 12 may be other than a cylindrical shape, and may be, for example, a polygonal shape or rounded.
- the surface of the main body 12 may be provided with a recess or a step.
- the surface of the main body 12 may be roughened by forming fine grooves on the surface of the main body 12 or providing a coating layer that is difficult to slip.
- a through hole may be formed in the main body portion 12 for the purpose of reducing air resistance and reducing weight.
- the main body 12 includes a cylindrical outer wall 12a, an inner inner walls 12b 1 to 12b 4 having an arc shape, outer outer walls 12c 1 to 12c 4 having an arc shape, And a bottom wall 12d having an annular shape.
- a flange member 12e having an annular shape is provided at the position near the upper end (closer to the lid portion 14) of the outer peripheral surface of the outer wall 12a.
- the eaves member 12e protrudes outward from the outer peripheral surface of the outer wall 12a.
- a notch 12f extending in the circumferential direction is provided between the upper end of the outer wall 12a and the flange member 12e.
- the inner inner walls 12b 1 to 12b 4 are located on the inner side of the outer wall 12a and on the circumference having the same radius.
- the inner inner walls 12b 1 to 12b 4 are arranged in this order in a clockwise direction when viewed from the upper end side (the lid part 14 side) of the main body part 12 with a constant interval in the circumferential direction.
- the inner inside wall 12b 1 and the inner interior wall 12b 2 are spaced at predetermined intervals in the circumferential direction
- the inner inside wall 12b 2 and the inner interior wall 12b 3 are spaced apart at predetermined intervals in the circumferential direction
- the inner inner wall 12b 4 are separated from each other at a predetermined interval in the circumferential direction
- the inner inner wall 12b 4 and the inner inner wall 12b 1 are separated from each other at a predetermined interval in the circumferential direction.
- the circle formed by the inner inner walls 12b 1 to 12b 4 can be set to be approximately the same as or slightly larger than the outer diameter of the main body 20a (described later) of the piston plate 20.
- the diameter of the circle formed by the inner inner walls 12b 1 to 12b 4 may be smaller on the lower side (the bottom wall 12d side) than on the upper side (the lid portion 14 side), or in the vertical direction (the direction of the central axis of the main body 12). ) May be set so as to gradually decrease toward the lower side. In this case, when the piston plate 20 moves from the upper side to the lower side, the posture of the piston plate 20 is easily maintained.
- the interval between the inner inner walls adjacent in the circumferential direction is the same as the width of the protrusions 20c 1 to 20c 4 (described later) of the piston plate 20, or the width of the protrusions 20c 1 to 20c 4 Can be set to be slightly larger.
- the central axis of the inner inner walls 12b 1 to 12b 4 substantially coincides with the central axis of the outer wall 12a (main body portion 12), but it does not have to coincide.
- the upper end of the inner inner wall 12b 1 that is closer to the inner inner wall 12b 4 is cut away. More specifically, in the vertical direction (center axis direction of the main body portion 12), the inner interior wall 12b 1 has a first portion 12b 11 of the same level as the position of the upper end of the outer wall 12a located in the upper end position of the upper end Has a second portion 12b 12 closer to the bottom wall 12d than the first portion 12b 11 . That is, a step is formed in the circumferential direction between the first portion 12b 11 and the second portion 12b 12 .
- the inner inner wall 12b 1 and the outer wall 12a are connected by a connecting wall 12g 1 to enhance the rigidity of both.
- Position of the upper end of the connecting wall 12 g 1 is a position comparable to the upper end of the first portion 12b 11.
- the inner inner wall 12b 1 , the outer wall 12a and the connecting wall 12g 1 can be integrally formed.
- the upper end of the inner inner wall 12b 2 that is closer to the inner inner wall 12b 1 is cut away.
- the upper end of the inner inner wall 12b 3 and the portion near the inner inner wall 12b 2 are cut out.
- the upper end of the inner inner wall 12b 4 that is closer to the inner inner wall 12b 3 is cut away.
- the configuration of the inner inner walls 12b 2 to 12b 4 is the same as that of the inner inner wall 12b 1 .
- the inner inner wall 12b 2 has first and second portions 12b 21 and 12b 22 .
- the inner inner wall 12b 3 has first and second portions 12b 31 and 12b 32 .
- the inner inner wall 12b 4 has first and second portions 12b 41 and 12b 42 .
- the connecting walls 12g 2 to 12g 4 connect the inner inner walls 12b 2 to 12b 4 and the outer wall 12a, respectively.
- the outer inner walls 12c 1 to 12c 4 are located between the outer wall 12a and the inner inner walls 12b 1 to 12b 4 on the circumference of the same radius.
- the difference between the radius of the circle formed by the outer inner walls 12c 1 to 12c 4 and the radius of the circle formed by the inner inner walls 12b 1 to 12b 4 , that is, the depth of the grooves G1 to G4 (described later) is determined by the protrusion of the piston plate 20 It can be set to be approximately the same as the protruding length of 20c 1 to 20c 4 (described later) or slightly longer than the protruding length of the protrusions 20c 1 to 20c 4 .
- the outer inner walls 12c 1 to 12c 4 are arranged in this order in a clockwise direction when viewed from the upper end side (the lid portion 14 side) with a constant interval in the circumferential direction. That is, the outer inner wall 12c 1 and the outer interior wall 12c 2 are spaced at predetermined intervals in the circumferential direction, the outer interior wall 12c 2 and the outer inner wall 12c 3 are spaced apart at predetermined intervals in the circumferential direction, the outer inner wall 12c 3 the outer inner wall 12c 4 are spaced at predetermined intervals in the circumferential direction, are spaced at predetermined intervals in the circumferential direction and the outer inner wall 12c 4 and the outer inner wall 12c 1.
- the side portions of the outer inner wall 12c 1 are connected to the side portions of the inner inner walls 12b 1 and 12b 2 , respectively.
- the outer inner wall 12c 1 and the inner inner walls 12b 1 and 12b 2 can be integrally formed. Therefore, a groove portion G1 extending in the vertical direction is formed on the inner peripheral surface of the main body portion 12 by the outer inner wall 12c 1 and the inner inner walls 12b 1 and 12b 2 . That is, the groove G1 is adjacent to the second portion 12b 22 of the inner interior wall 12b 2.
- the position of the upper end of the outer inner wall 12c 1 is a position comparable to the upper end of the outer wall 12a.
- the outer inner wall 12c 1 and the outer wall 12a are connected by a connecting wall 12 g 5, the rigidity of both is enhanced.
- Position of the upper end of the connecting wall 12 g 5 is a position comparable to the upper end of the outer inner wall 12c 1.
- the outer inner wall 12c 1 , the outer wall 12a and the connecting wall 12g 5 can be integrally formed.
- the outer inner walls 12c 2 to 12c 4 are configured in substantially the same manner as the outer inner wall 12c 1 . Accordingly, a groove portion G2 extending in the vertical direction is formed on the inner peripheral surface of the main body portion 12 by the outer inner wall 12c 2 and the inner inner walls 12b 2 and 12b 3 . By the outer inner wall 12c 3 and the inner inner walls 12b 3 and 12b 4 , a groove portion G3 extending in the vertical direction is formed on the inner peripheral surface of the main body portion 12. By the outer inner wall 12c 3 and the inner inner walls 12b 3 and 12b 4 , a groove portion G3 extending in the vertical direction is formed on the inner peripheral surface of the main body portion 12.
- groove G2 is adjacent to the second portion 12b 32 of the inner interior wall 12b 3.
- Groove G3 is adjacent to the second portion 12b 42 of the inner interior wall 12b 4.
- the groove part G4 is adjacent to the second portion 12b 12 of the inner inner wall 12b 1 .
- the outer inner walls 12c 3 and 12c 4 are different from the outer inner wall 12c 1 in the position of their upper ends. Specifically, in the vertical direction, the position of the upper end of the outer inner wall 12c 3 is substantially the same as the position of the upper end of the second portion 12b 42 of the adjacent inner inner wall 12b 4 . That is, the upper end of the outer inner wall 12c 3 is located on the bottom wall 12d toward the upper end of the outer wall 12a. The position of the upper end of the outer inner wall 12c 4 is also similar to the position of the upper end of the outer inner wall 12c 3.
- connecting wall 12 g 7 Similar to the connecting wall 12 g 5, respectively connecting wall 12 g 6 ⁇ 12 g 8 couples the outer inner wall 12c 2 ⁇ 12b 4 and the outer wall 12a.
- Connecting wall 12 g 7 it differs from the connecting wall 12 g 5 position of the upper end. Specifically, the position of the upper end of the connecting wall 12 g 7 is located on the bottom wall 12d nearer position of the upper end of the outer inner wall 12c 3. Accordingly, when the cross sections of the outer inner wall 12c 3 , the connecting wall 12g 7 and the outer wall 12a are viewed, the connecting wall 12g 7 is a recessed portion.
- the bottom wall 12d is connected to the lower end of the outer wall 12a, the lower ends of the inner inner walls 12b 1 to 12b 4 , the lower ends of the outer inner walls 12c 1 to 12c 4 , and the lower ends of the connecting walls 12g 1 to 12g 8 .
- the outer diameter of the bottom wall 12d is approximately the same as the diameter of the outer peripheral surface of the outer wall 12a.
- the inner diameter of the bottom wall 12d is approximately the same as the diameter of the circle formed by the inner peripheral surfaces of the inner inner walls 12b 1 to 12b 4 . Therefore, the lower ends of the grooves G1 to G4 are closed by the bottom wall 12d (see FIGS. 9 and 12).
- the lid portion 14 has a circular top plate 14a and a cylindrical member 14b extending downward from the periphery of the top plate 14a.
- the height of the cylindrical member 14b can be set to be approximately the same as the length from the flange member 12e to the upper end of the outer wall 12a.
- the cylindrical member 14b is provided with a notch 14c extending in the circumferential direction.
- the length of the notch part 14c can be set to the same length as the notch part 12f of the outer wall 12a.
- the lid portion 14 is attached to the main body portion 12.
- the lid 14 is attached to the main body 12 in a state in which the lid 14 is positioned with respect to the main body 12 so that the notch 14c of the lid 14 and the notch 12f of the outer wall 12a coincide. Is called. Therefore, a through hole H (see FIG. 10) that communicates the inside and outside of the housing 10 is formed by the notches 12f and 14c.
- a method of attaching the lid portion 14 and the main body portion 12 a method of adhering the cylindrical member 14b of the lid portion 14 and the flange member 12e of the main body portion 12 using an adhesive or an adhesive sheet may be employed.
- a method of mechanically engaging (for example, providing an engaging claw in the cylindrical member 14b and providing an engaging hole in the flange member 12e and fitting the engaging claw and the engaging hole together) may be adopted.
- the lid 14 and the main body 12 may be pressure-bonded (for example, the diameter of the cylindrical member 14b of the lid 14 is set smaller than the outer diameter of the main body 12 and the lid 14 is pushed into the main body 12).
- a method may be adopted, or a method of welding the lid portion 14 and the main body portion 12 (for example, heating and melting the cylindrical member 14b and the flange member 12e and then cooling and integrating them) is adopted. May be.
- the piston plate 20 is accommodated in the main body 12 and is movable in the vertical direction along the central axis of the main body 12 in the main body 12.
- the material of the piston plate 20 may be the same as the material of the housing 10 or the material of the microneedle array 30 (described later).
- the piston plate 20 includes a disk-shaped main body 20a and a cylindrical member 20b extending upward from the periphery of the main body 20a.
- an opening, a groove, a through hole, or the like may be formed in the main body 20a.
- a protrusion or the like may be provided on the upper surface of the main body 20a (the surface on the side where the conical coil spring 40 is disposed).
- the inner diameter of the cylindrical member 20b is set to be larger than the maximum diameter D1 (described later) of the conical coil spring 40. If the cylindrical member 20b can exhibit a function as a stopper that does not fall off the piston plate 20 when the conical coil spring 40 moves in the radial direction, the height of the cylindrical member 20b is not particularly limited. For example, when it is desired to reduce the height of the applicator A as much as possible, the height of the cylindrical member 20b can be set to the thickness of the metal wire constituting the conical coil spring 40. When the stopper of the conical coil spring 40 is unnecessary, the piston plate 20 may not have the cylindrical member 20b.
- ⁇ 20c 4 are provided.
- the protrusions 20c 1 to 20c 4 are arranged in this order in the clockwise direction when viewed from above (the upper surface side of the piston plate 20 on which the conical coil spring 40 is placed) with a constant interval in the circumferential direction.
- the protrusions 20c 1 to 20c 4 have a quadrangular prism shape in the present embodiment.
- the protrusions 20c 1 to 20c 4 are movable along the extending direction in the grooves G1 to G4, respectively. Therefore, the piston plate 20 can be guided in the vertical direction along the extending direction of the groove portions G1 to G4 (the axial direction of the main body portion 12).
- the protrusions 20c 1 to 20c 4 are movable in the horizontal direction above the second portions 12b 22 , 12b 32 , 12b 42 , and 12b 12 in a state where the protrusions 20c 1 to 20c 4 are positioned on the upper ends of the grooves G1 to G4, respectively. Therefore, the protrusions 20c 1 to 20c 4 can be placed on the upper ends of the second portions 12b 22 , 12b 32 , 12b 42 , and 12b 12 adjacent to the groove portions G1 to G4, respectively.
- the upper ends of the second portions 12b 12 to 12b 42 of the inner inner walls 12b 1 to 12b 4 may extend so as to be parallel to the horizontal plane in the circumferential direction, or may be inclined with respect to the horizontal plane in the circumferential direction. .
- the height as the second portion 12b 12 ⁇ 12b 42 is directed into the groove G1 ⁇ G4 adjacent is high, may be the upper end of the second portion 12b 12 ⁇ 12b 42 is tilted.
- a plurality of ribs 24 extending in the vertical direction are provided on the peripheral edge (outer peripheral surface) of the piston plate 20.
- the rib 24 has a semi-cylindrical shape (a shape corresponding to one side portion obtained by dividing the cylinder into two parts along a plane along its central axis). In this embodiment, the rib 24 is reduced in diameter as it goes downward.
- a plurality of protrusions (second protrusions, four protrusions in the present embodiment) 20d 1 to 20d extending downward from the periphery of the main body 20a. 4 is provided on the lower surface (surface opposite to the upper surface) of the main body 20a. 4 is provided.
- the protrusions 20d 1 to 20d 4 have an arc shape when viewed from below, and are located on the circumference of the same radius.
- the protrusions 20d 1 to 20d 4 are arranged in this order in the counterclockwise direction when viewed from below, with a constant interval in the circumferential direction.
- the projecting portions 20d 1 and the protruding portion 20d 2 are spaced at predetermined intervals in the circumferential direction
- the protruding portions 20d 2 and the protrusion 20d 3 are spaced apart at predetermined intervals in the circumferential direction
- the protruding portion 20d 3 and the projecting portion 20d 4 are spaced at predetermined intervals in the circumferential direction
- the projecting portions 20d 4 and the projecting portions 20d 1 are spaced at predetermined intervals in the circumferential direction.
- the microneedle array 30 includes a disk-shaped substrate 31 and a disk-shaped protrusion provided on one main surface (lower surface) of the substrate 31. And a plurality of microneedles 32 projecting from the surface of the projecting portion 33.
- the substrate 31 is a base for supporting the protruding portion 33.
- the outer diameter of the substrate 31 can be set to be approximately the same as or slightly smaller than the inner diameter of the circle formed by the protrusions 20d 1 to 20d 4 . Therefore, the microneedle array 30 can be arranged inside the protrusions 20d 1 to 20d 4 .
- the outer diameter of the substrate 31 can be set to be larger than the outer diameter of the protruding portion 33.
- the other main surface (upper surface) of the substrate 31 is attached to the lower surface of the main body 20a of the piston plate 20 (see FIG. 9). That is, the microneedle array 30 is integrated with the piston plate 20.
- a method of attaching the substrate 31 to the piston plate 20 a method of mechanically integrating the substrate 31 and the piston plate 20 may be adopted, or the substrate 31 and the piston plate 20 may be used using an adhesive, an adhesive sheet, or the like. You may employ
- the microneedle array 30 and the piston plate 20 are bonded by an adhesive sheet 34.
- the surface of the protrusion 33 (the installation surface of the microneedle) is located outward (downward) from the surfaces of the protrusions 20d 1 to 20d 4 . . Since the substrate 31 protrudes outward (downward) from the protrusion 33 in the radial direction, when the microneedle array 30 is attached to the piston plate 20, the protrusion 33 and the protrusions 20d 1 to 20d 4 are It is separated. A portion between the projecting portion 33 and the projecting portions 20d 1 to 20d 4 forms a recess 35 that is recessed from the surface of the projecting portions 20d 1 to 20d 4 , 33.
- the portion to which the microneedle array 30 is attached is a microneedle region where the microneedles 32 are located.
- the “microneedle region (where the microneedle is located)” is a portion of the piston plate, in which the microneedle is directly or indirectly disposed on the piston plate.
- the microneedles 32 are not directly provided on the lower surface of the main body 20 a, but the microneedle array 30 including the microneedles 32 is attached to the lower surface of the main body 20 a of the piston plate 20. Therefore, the microneedle region in the present embodiment is a region where the microneedles 32 are indirectly arranged on the piston plate 20.
- the microneedles 32 are arranged in a staggered pattern (alternately) on the surface of the substrate 31 at substantially equal intervals.
- the microneedle 32 is a structure that becomes narrower from the base part connected to the projecting part 33 toward the tip part.
- a coating C made of an active ingredient may be applied on the substrate 31, the protrusion 33, and / or the microneedle 32.
- the coating C is a coating agent (coating liquid) containing an active ingredient and purified water and / or a coating carrier, which is fixed to a part of or the entire surface of the substrate 31, the protrusion 33 and / or the microneedle 32. It has been That is, the coating C is integrated with the microneedle 32.
- the degree of integration can be set as appropriate.
- the coating C may be flowable on the surface of the microneedle 32, or the coating C may exhibit a function as a needle. It may be solidified.
- “Fixed” refers to maintaining a state in which the coating liquid adheres almost uniformly to the object. Immediately after coating, the coating solution is fixed in a dry state by a known drying method such as air drying, vacuum drying, freeze drying, or a combination thereof.
- the active ingredient used in the present embodiment is not particularly limited, and is an antioxidant, a free radical scavenger, a moisturizer, a depigmenting agent, a fat regulator, an ultraviolet reflector, a wetting agent, an antibacterial agent, an antiallergic agent, Anti-acne, anti-aging agent, anti-wrinkle agent, bactericidal agent, analgesic agent, anti-cough agent, anti-itch agent, local anesthetic agent, anti-hair loss agent, hair growth aid, hair growth inhibitor, anti-dandruff agent, antihistamine agent, keratin Solubilizers, anti-inflammatory agents, anti-infectives, antiemetics, anticholinergics, vasoconstrictors, vasodilators, trauma healing aids, peptides, polypeptides, proteins, body odor inhibitors, antiperspirants, emollients , Tanning agent, whitening agent, antifungal agent, antitussive agent, lotion, vitamin, amino acid, amino
- the conical coil spring 40 is accommodated in the main body 12 as shown in FIGS. 9 and 10. Specifically, the conical coil spring 40 is disposed between the piston plate 20 and the lid portion 14, and is sandwiched between the upper surface of the piston plate 20 and the lower surface of the lid portion 14. As shown in FIGS. 9, 10 and 22, the conical coil spring 40 is formed by winding a metal wire having a circular cross section in a spiral shape so as to have a conical shape when viewed from the side. is there. In this embodiment, the conical coil spring 40 does not overlap when viewed from the center line direction of the conical coil spring 40. Examples of the metal wire include stainless steel wire, piano wire (iron wire), and copper wire. Of these, stainless steel wire is particularly difficult to rust.
- the small diameter side of the conical coil spring 40 is in contact with the lid portion 14 and the large diameter side of the conical coil spring 40 is in contact with the piston plate 20 side.
- Parameters relating to the energy of the piston plate 20 that is actuated by the biasing force of the conical coil spring 40 include a transverse elastic coefficient, a wire diameter (d in FIG. 22), a maximum diameter (D1 in FIG. 22), a minimum diameter (D2 in FIG. 22), Examples include the total number of turns, the weight of the conical coil spring 40, the total weight of the piston plate 20 and the microneedle array 30, the free height (h in FIG. 22), the contact height, the pitch angle, and the pitch.
- the release member 50 includes an inner part 50a located inside the main body part 12, an outer part 50b located outside the main body part 12, and an inner part 50a and an outer part. It has the connection part 50c which connects the part 50b.
- the inner part 50a is a flat plate having an arc shape. Diameter of the inner portion 50a is larger than the diameter of the inner interior wall 12b 1 ⁇ 12b 4, smaller than the diameter of the outer wall 12a. In the completed state of the applicator A, the inner portion 50a is located between the outer wall 12a and the inner inner walls 12b 1 to 12b 4 (see FIG. 11).
- the inner portion 50a is placed on the outer inner walls 12c 3 and 12c 4 having a low height and the connecting walls 12g 3 , 12g 4 , 12g 7 and 12g 8 having a low height. (See the figure).
- the inner portion 50a is integrally provided with a protruding portion 50d that protrudes in the radial direction from the inner edge toward the central axis.
- the protrusion 50d is a flat plate having a rectangular shape.
- the protrusion 50d is on the circumference having the same radius as the inner inner walls 12b 1 to 12b 4 , and the first portion 12b 31 of the inner inner wall 12b 3 and the first of the inner inner wall 12b 4 are the same. is located between the portion 12b 41 (see FIG. 11).
- the inner portion 50a is integrally provided with a protrusion 50e protruding downward from the lower surface thereof.
- the protrusion 50e has an arc shape having the same degree of curvature as the inner portion 50a, and extends along the inner portion 50a.
- ridges 50e is positioned between the outer inner wall 12c 3 and the outer wall 12a.
- the height of the protrusion 50e is set to be smaller than the depth of the recess formed by the outer inner wall 12c 3 , the connecting wall 12g 7 and the outer wall 12a so as not to prevent the movement of the release member 50 described later in the circumferential direction. It is preferable.
- the outer portion 50b is a curved plate extending in the circumferential direction along the outer peripheral surface of the main body 12, and has an arcuate cross section.
- a plurality of protrusions extending along the vertical direction are provided on the outer surface of the outer portion 50b.
- the plurality of protrusions are arranged side by side along the circumferential direction. Therefore, the outer peripheral surface of the outer portion 50b is uneven in the circumferential direction.
- the outer peripheral surface of the outer portion 50b may be embossed or roughened instead of the plurality of protrusions.
- the outer peripheral surface of the outer portion 50b may not be particularly processed.
- the connecting part 50c is a flat plate having a rectangular shape.
- the connecting part 50c protrudes in the radial direction from the outer edge of the inner part 50a toward the side opposite to the central axis.
- the connecting portion 50 c is exposed to the outer peripheral surface of the main body portion 12 through the through hole H.
- the width of the connecting portion 50 c is set smaller than the opening width of the through hole H so that the connecting portion 50 c (release member 50) can move in the extending direction of the through hole H.
- each part of the applicator A (the housing 10, the piston plate 20, the microneedle array 30, the conical coil spring 40, and the release member 50) is prepared.
- a coating C is applied in advance to the microneedles 32 of the prepared microneedle array 30.
- the microneedle array 30 is attached to the lower surface of the piston plate 20.
- the inner portion 50a of the release member 50 is connected to the outer inner walls 12c 3 and 12c 4 and the connection wall so that the protruding portion 50d of the release member 50 is positioned on the first portion 12b 41 of the inner inner wall 12b 4 . 12 g 3, placed on the 12g 4, 12g 7, 12g 8 ( see FIG. 11). Accordingly, the release member 50 (the connecting portion 50c) is located on one end side of the through hole H.
- the protrusions 20c 1 of the piston plate 20 is positioned on the second portion 12b 22 of the inner interior wall 12b 2, the projections 20c 2 of the piston plate 20 on the second portion 12b 32 of the inner interior wall 12b 3 position and, on the second portion 12b 42 of the inner interior wall 12b 4, and positioned protrusion 20c 3 of the piston plate 20 is between the protruding portion 50d and the groove G3 release member 50, the inner interior wall 12b 1 as projection 20c 4 of the piston plate 20 on the second portion 12b 12 is positioned, placing the piston plate 20 to the body portion 12 (see drawing).
- a second portion 12b 42 width is preferably larger than the total width of the projecting portion 50d and the width of the protrusion 20c 4.
- the conical coil spring 40 is placed on the upper surface of the piston plate 20 so that the large diameter side of the conical coil spring 40 is on the lower side and the small diameter side is on the upper side. If it does in this way, when mounting the conical coil spring 40 on the piston plate 20, the conical coil spring 40 stands up stably, and it becomes easy to manufacture the applicator A1.
- the lid part 14 is attached to the main body part 12 so that the notch part 12f of the main body part 12 and the notch part 14c of the lid part 14 coincide.
- the protrusion 20c 1 ⁇ 20c 4 are placed on the second section 12b 12 ⁇ 12b 42 of the inner interior wall 12b 1 ⁇ 12b 4, respectively, the conical coil spring 40 is attached to the lid portion 14 to the main body portion 12 Is compressed, the piston plate 20 is not pushed downward by the conical coil spring 40. That is, the piston plate 20 is locked to the housing 10 (main body portion 12). Accordingly, as shown in FIG.
- the piston plate 20 is held in the retracted position on the lid portion 14 side in the main body portion 12 with the conical coil spring 40 being compressed by the lid portion 14 and the piston plate 20. Is done. In this way, the state in which the piston plate 20 is locked to the housing 10 (main body portion 12) and the conical coil spring 40 is compressed by the lid portion 14 and the piston plate 20 is hereinafter referred to as a “locking state”.
- locking the piston plate 20 to the housing 10 (main body portion 12) at the retracted position is also referred to as cocking.
- the metal wires constituting the conical coil spring 40 do not overlap when viewed from the center line direction of the conical coil spring 40, the piston plate 20 is locked (cocked) with the casing 10.
- the conical coil spring 40 sandwiched between 20 and the lid portion 14 has a height approximately equal to the wire diameter (see FIG. 9).
- the applicator A is positioned so that the microneedle 32 is directed to the skin at a location where a drug or the like is to be applied.
- the release member 50 is slid to the other end side of the through hole H while maintaining this positioned state (see FIG. 24). Accordingly, the protruding portion 50d of the release member 50, a protrusion 20c 3 of the piston plate 20 pushes toward the groove portion G3. Along with this, the piston plate 20 rotates.
- the upper end of the second portion 12b since adjacent an end of the lid portion 14 side of the groove G1 (the upper end portion of the groove G1), the piston plate 20 rotates, the protrusions 20c 1 second portions slides on the upper end of 12b 22 and reaches the groove G1.
- the upper end of the second portion 12b 32 since adjacent an end of the lid portion 14 side of the groove G2 (the upper end portion of the groove G2), the piston plate 20 rotates, the protrusions 20c 2 second portion The upper end of 12b 32 is slid to reach the groove G2.
- the piston plate 20 moves along the groove portions G1 to G4 (the central axis of the main body portion 12) toward the outside (skin) in the main body portion 12,
- the microneedle array 30 collides with the skin S (see FIGS. 26 and 27A).
- the piston plate 20 is prevented from jumping out of the housing 10 (main body portion 12).
- the speed of the microneedle 32 (piston plate 20) at this time may be 4 m / s to 30 m / s, 4 m / s to 15 m / s, or 7 m / s to 15 m / s.
- the microneedles 32 are configured to collide with the skin S at a speed of 4 m / s to 30 m / s, the microneedles 32 can be appropriately punctured into the skin S, so that drugs and the like can be sufficiently introduced into the body of the animal. Can be migrated to.
- FIG. 27A shows a state in which the piston plate 200 in which the protrusions 20d 1 to 20d 4 are not provided on the lower surface (the surface opposite to the upper surface) of the main body 20a collides with the skin S. ing.
- the protrusions 20d 1 to 20d 4 are arranged around the protrusion 33 in a state of being separated from the protrusion 33. Therefore, the protrusion 33 collides with the skin S even when waviness in the skin S (even if undulations in the skin), the undulation is weakened by protrusions 20d 1 ⁇ 20d 4 (see FIG. 27 (b) ). Further, it is difficult for the piston plate 20 to rebound from the skin S. Therefore, the microneedle once punctured into the skin S is likely to stay in the skin S. As a result, the active ingredient can be sufficiently transferred into the body.
- FIG. 27B shows a state when the piston plate 20 according to the present embodiment collides with the skin S.
- the portion between the protrusion 33 and the protrusions 20d 1 to 20d 4 constitutes a recess 35 that is recessed from the surface of the protrusions 20d 1 to 20d 4 , 33. Therefore, the undulation (propagation of vibration) of the skin S can be absorbed in the recess 35. Therefore, the rebound from the skin S of the piston plate 20 can be further suppressed.
- protrusions 20d 1 ⁇ 20d 4 forms a node of vibration by being pressed against the skin, part of the skin surrounded by the protrusions 20d 1 ⁇ 20d 4 ( It is inferred that the vibration surface between the nodes absorbs vibration energy in the concave portion 35 and the skin region corresponding to the microneedle region).
- the skin S is punctured by the applicator A simply by sliding the release member 50 by the user. Therefore, no matter who uses the applicator A, the urging force of the conical coil spring 40 is transmitted to the microneedle 32 through the piston plate 20, and the skin S is punctured by the microneedle 32 with a constant impact force. S can be punctured reliably (reproducibility of puncture increases)
- the microneedle 32 punctures the skin S
- the active ingredient of the coating C adhering to the microneedle 32 is administered into the body, and the active ingredient moves into the body through the skin S.
- the release state 50 releases the locked state in which the piston plate 20 is locked to the housing 10.
- the urging force of the conical coil spring 40 acts on the piston plate 20, and the piston plate 20 moves along the groove portions G1 to G4 in the main body portion 12 to reach the position where it acts on the skin S. Therefore, it is not necessary to attach a member such as a shaft extending in the axial direction of the main body 12 (the height direction of the applicator A) to the piston plate 20.
- the conical coil spring 40 is used to apply a biasing force to the piston plate 20.
- the conical coil spring 40 has a very small height during compression. As described above, the height of the applicator A itself can be reduced, and the weight of the applicator A can be reduced.
- the release member 50 is located on the side (outer peripheral surface) of the housing 10 (main body portion 12), the release member 50 is in the axial direction of the main body portion 12 (applicator A). Extending in the height direction). Therefore, the height of the applicator A itself can be further reduced.
- the protrusions 20d 1 to 20d 4 may be provided with an adhesive substance 60 having adhesive properties in at least a part of the surface thereof.
- the adhesive material 60 include acrylic, synthetic rubber, and silicon.
- FIG. 28 is a diagram illustrating a state in which the adhesive substance 60 is provided over the entire surface of the protrusions 20d 1 to 20d 4 .
- FIG. 28A shows a cross section of the piston plate 20, and
- FIG. 28B shows a bottom surface of the piston plate 20.
- FIG. 29 is a diagram illustrating a state in which the adhesive substance 60 is provided in a partial region of the surface of the protrusions 20d 1 to 20d 4 .
- FIG. 29A shows a state in which the adhesive substance 60 is provided on a part of the surface of each of the protrusions 20d 1 to 20d 4 for each of the protrusions 20d 1 to 20d 4 .
- FIG. 29B shows a state where the adhesive substance 60 is provided on a part of the surface of at least one of the protrusions 20d 1 to 20d 4 (in the figure, the protrusions 20d 1 and 20d 3 ). ing.
- the piston plate 20 includes the adhesive substance 60
- the adhesive substance 60 tries to stick to the skin. Therefore, the rebound from the skin S of the piston plate 20 can be further suppressed.
- the piston plate 20 has the four protrusions 20d 1 to 20d 4. However, as shown in FIG. 30, the piston plate 20 may have at least one protrusion. .
- FIG. 30A shows a state where two projecting portions 20d 5 and 20d 6 having an arc shape are provided on the lower surface (surface opposite to the upper surface) of the main body 20a. These protrusions 20d 5 and 20d 6 face each other and are located on the circumference of the same radius.
- FIG. 30B shows a state in which two through holes 20e are formed in each of the protrusions 20d 1 to 20d 4 .
- FIG. 30C and 30D both show a state in which one projecting portion 20d having an annular shape is provided on the lower surface (surface opposite to the upper surface) of the main body 20a.
- the width of the protrusion 20d shown in FIG. 30 (d) is set larger than the width of the protrusion shown in FIG. 30 (c).
- FIG. 31A shows a piston plate 20 disposed on the lower surface of the main body 20a at a predetermined interval so that a plurality of columnar protrusions (six protrusions in the figure) 20d surround the microneedle array 30.
- Show. 31 (b) and 31 (c) show how the outer shape of the piston plate 20 has a square shape and a triangular shape, respectively.
- the outer shape of the piston plate 20 is not limited to a circle, and may take various shapes other than a circle.
- the shape of the projecting portion 20d may correspond to the outer shape of the piston plate 20, or may be different from the outer shape of the piston plate 20.
- the outer shape of the microneedle array 30 may correspond to the shape of the protruding portion 20 d surrounding the microneedle array 30, or may be different from the shape of the protruding portion 20 d surrounding the microneedle array 30.
- 31D and 31E show the piston plate 20 on which a plurality of microneedle arrays 30 can be arranged.
- a protrusion 20d having a lattice shape is provided on the lower surface of the main body 20a of the piston plate 20, and four rectangular recesses surrounded by the main body 20a and the protrusion 20d are formed. ing.
- the microneedle array 30 is disposed in each recess.
- FIG. 31 (e) is a further modification of FIG. 31 (d), and each recess has a circular shape.
- the piston plate 20 and the microneedle array 30 are integrated.
- the piston plate 20 shown in FIGS. 13 to 19 and the microneedle array 30 shown in FIGS. It may be a body.
- the microneedle array 30 is placed on the skin S, the applicator A is placed on the skin S so as to face the microneedle array 30, and then the applicator A is operated. By doing so, the piston plate 20 collides with the microneedle array 30 on the skin S, and the skin S is punctured.
- the applicator A and the microneedle array 30 face each other so that the protruding portions 20d 1 to 20d 4 can surround the microneedle array 30 when the piston plate 20 collides with the microneedle array 30 on the skin S. Arrange.
- the microneedle array 30 is integrated with the piston plate 20.
- the microneedle 32 may be integrally formed on the lower surface of the piston plate 20.
- the piston plate 20 has projecting portions 20d 1 to 20d 4 and a projecting portion 21.
- the protruding portion 21 is located inside the protruding portions 20d 1 to 20d 4 . That is, the protrusion 21 is surrounded by the protrusions 20d 1 to 20d 4 .
- the surface of the projecting portion 21 is positioned outward from the surface of the protrusions 20d 1 ⁇ 20d 4.
- the protrusion 21 and the protrusions 20d 1 to 20d 4 are separated from each other.
- a portion between the projecting portion 21 and the projecting portions 20d 1 to 20d 4 constitutes a recess 22 that is recessed from the surface of the projecting portions 20d 1 to 20d 4 , 33.
- the main body 20a of the piston plate 20 can be regarded as the substrate of the microneedle array. That is, it can be seen that the microneedle array behaves as the piston plate 20.
- the surface of the protrusion 33 (the installation surface of the microneedle) is located outward (downward) from the surfaces of the protrusions 20d 1 to 20d 4 , but the surface of the protrusion 33 and the protrusion The positional relationship with the surface of 20d 1 to 20d 4 is not limited to this.
- the surface of the protrusion 33 and the surface of the protrusions 20d 1 to 20d 4 may be located at substantially the same height, or the surface of the protrusions 20d 1 to 20d 4 is more than the surface of the protrusion 33. It may be located outward (downward).
- the tip of the microneedle 32 may be located outward (downward) from the surface of the projecting portions 20d 1 to 20d 4 .
- the microneedles 32 are arranged on the surface of the substrate 31 in a staggered pattern (alternately) at substantially equal intervals.
- the density of the microneedles 32 on the substrate 31 may be different.
- the density of the microneedles 32 may be higher in the vicinity of the center than the peripheral side of the substrate 31 or may be higher in the peripheral side than the vicinity of the center of the substrate 31.
- the heights of the microneedles 32 may all be the same or different.
- the height of the microneedles 32 in the vicinity of the center may be made higher than the periphery of the substrate, or the microneedles 32 in the periphery of the substrate near the center. The height may be increased.
- a conical coil spring 41 in which both end portions are cut flat so as to be along a virtual plane orthogonal to the center line may be used.
- the end portion on the small diameter side of the conical coil spring 41 is in contact with the partition wall 10 a, and the end portion on the large diameter side of the conical coil spring 41 is in contact with the piston plate 20. Therefore, when the conical coil spring 41 is configured in this way, the contact area between the partition wall 10a and the piston plate 20 and the conical coil spring 41 is increased. Therefore, the conical coil spring 41 can be stably disposed in the housing 10.
- the conical coil spring 40 is used to apply the biasing force to the piston P, but a non-linear coil spring having another shape may be used.
- a non-linear coil spring having another shape examples include a drum-shaped coil spring 42 (see FIG. 33B) and a barrel-shaped coil spring 43 (see FIG. 33C).
- a cylindrical coil spring 44 shown in FIG. 33 (d) may be used.
- the metal wires constituting the conical coil spring 40 are not overlapped when viewed from the extending direction of the center line of the conical coil spring 40, but the metal wires are overlapped when viewed from the extending direction of the center line.
- a conical coil spring 40 in which a wire is wound may be used. In either case, the free height h of the conical coil spring 40 can be set to be smaller than a value obtained by multiplying the wire diameter d and the total number of turns.
- a rotational force is applied to the piston plate (rotating the piston plate) to release the locking (cocking) of the piston plate to the housing (main body).
- the force applied to the piston plate when releasing the locking of the piston plate is not limited to the rotational force.
- the piston plate may be unlocked by moving the piston plate in the horizontal direction with respect to the housing (main body portion).
- the piston plate locked to the housing (main body) via the locking member stays in place, and the locking of the piston plate is released by moving or rotating the locking member in the horizontal direction. You may let them.
- the microneedle array 30 includes the protruding portion 33.
- the microneedle array 30 ⁇ / b> A includes a disk-shaped substrate 31 and a plurality of microneedles 32 provided on the surface of the substrate 31. Similar to the above embodiment, the outer diameter of the substrate 31 is set to be approximately the same as or slightly smaller than the inner diameter of the circle formed by the protrusions 20d 1 to 20d 4 . Therefore, the microneedle array 30A is disposed inside the protrusions 20d 1 to 20d 4 .
- the substrate 31 and the protrusions 20d 1 to 20d 4 are separated from each other, and a portion between the surface of the substrate 31 on which the microneedles 32 are provided (a microneedle installation surface) and the protrusions 20d 1 to 20d 4 is the surface. Further, a recess that is recessed from both of the surfaces of the protrusions 20d 1 to 20d 4 may be formed.
- the microneedle array 30 ⁇ / b> A is integrated with the piston plate 20 by being attached to the lower surface of the main body 20 a of the piston plate 20.
- the needle length of the microneedle array 30A may be set so that the tip of the microneedle 32 protrudes downward from the protrusions 20d 1 to 20d 4 .
- the portion to which the microneedle array 30A is attached is a microneedle region where the microneedles 32 are located.
- the microneedles 32 are not directly provided on the lower surface of the main body 20a, but a microneedle array 30A including the microneedles 32 is attached to the lower surface of the main body 20a of the piston plate 20. Therefore, the microneedle region in this modification is a region where the microneedles 32 are indirectly arranged on the piston plate 20.
- the microneedles may be provided on the lower surface (main surface) of the main body of the piston plate, that is, on the piston plate itself.
- the microneedle region in this modification is a region where the microneedles 32 are directly arranged on the main surface of the piston plate.
- the microneedle region and the protrusion are recessed from both the microneedle region and the surface of the protrusion. A recess may be formed.
- the microneedle array 30A and the piston plate 20 may be separate.
- the microneedle array 30A is placed on the skin, and the applicator A is placed on the skin so as to face the microneedle array 30A. Collides with the microneedle array 30A on the skin S, and the skin S is punctured.
- the applicator A and the microneedle array 30A are arranged so that the protrusions 20d 1 to 20d 4 can surround the microneedle array 30A when the piston plate 20 collides with the microneedle array 30A on the skin S. Arrange.
- the cross-sectional shape of the protrusions 20d 1 to 20d 4 along the radial direction of the piston plate 20 is not limited, and may be, for example, a rectangle, a circle, an ellipse, a semicircle, a triangle, or another polygon.
- the protrusions 20d 1 to 20d 4 may be formed softer than the other parts of the piston plate 20, for example, the protrusions 20d 1 to 20d 4 are formed of a material softer than the material of the other parts of the piston plate 20. May be.
- the protrusions 20d 1 to 20d 4 may be used for purposes other than improving the puncture performance. For example, in order to ensure the sterility of the microneedle, the protrusions or a combination of the protrusions and other components May be adopted.
- the height difference (the height difference D shown in FIG. 36) between the tip surface of the protruding portion of the piston plate and the tip of the microneedle may be 0 mm or greater than 0 mm.
- the lower limit of the height difference may be, for example, 0 mm, 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, or 1 mm.
- the upper limit of the height difference is, for example, 10 mm, 9 mm, 8 mm, 7 mm, 6 mm, 5 mm, 4 mm, 3 mm, 2 mm, 1.9 mm, 1.8 mm, 1.7 mm, 1.6 mm, 1.5 mm, 1.4 mm.
- Puncture performance can be improved by setting the height difference in this way.
- the value obtained by D / F is, for example, 0.0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0. It may be 8, 0.9, or 1.0.
- the upper limit of the value D / F is, for example, 3.0, 2.9, 2.8, 2.7, 2.6, 2.5, 2.4, 2.3, 2.2, 2.1, It may be 2.0, 1.9, 1.8, 1.7, 1.6, 1.5, 1.4, 1.3, 1.2, 1.1, or 1.0. Puncture performance can be improved by setting the value D / F indicating the ratio of the height difference to the average length of the microneedles in this way.
- Example 1 The applicator A according to the present embodiment (Example 1), the piston plate 20 of the applicator A changed to the mode shown in FIG. 28 (Example 2), and the piston plate of the applicator A are illustrated.
- the puncture performance was evaluated using a modified example (comparative example) shown in 27 (a). That is, in Example 1, the piston plate 20 had the protruding portions 20d 1 to 20d 4 .
- Example 2 had the same configuration as Example 1 except that the piston plate 20 had the adhesive substance 60 in addition to the protrusions 20d 1 to 20d 4 . Comparative Example, except that the piston plate 20 is protruded portions 20d 1 ⁇ 20d 4 did not have both also adhesive material 60 was the same structure as in Example 1.
- the evaluation of the puncture performance is performed by administering ovalbumin (OVA) to the rabbit skin using the microneedle array 30 and determining the migration rate of OVA to the rabbit skin. Based on.
- the migration rate is the ratio of the amount of OVA administered to the rabbit skin out of the amount of OVA (coating C) adhered to the microneedle 32.
- the total weight of the operating portion composed of the piston plate 20, the microneedle array 30 and the conical coil spring 40 was set to 1.2 g.
- the area of the substrate 31 in the microneedle array 30 was 1.13 cm 2 .
- the number of microneedles 32 in the microneedle array 30 was 640.
- the density of the microneedles 32 in the microneedle array 30 was 565 / cm 2 .
- the height of each microneedle 32 of the microneedle array 30 was 500 ⁇ m.
- the coating range when OVA was applied to the microneedles 32 was about 180 ⁇ m including the apex of the microneedles 32.
- the initial content of OVA coated on the microneedles 32 was 80 ⁇ g.
- the OVA was administered to the rabbit skin by placing the applicator on the rabbit skin and operating the applicator to puncture the microneedle 32 into the rabbit skin.
- OVA was extracted by immersing the microneedle array 30 peeled from the rabbit skin in phosphate buffered saline (PBS), and the amount of migration was determined by subtracting the amount of OVA extracted from the initial content, The transfer rate was determined from the ratio of the transfer amount to the initial content.
- PBS phosphate buffered saline
- Such administration of OVA to the rabbit skin was repeated three times, and the average value and standard deviation of the migration rate were calculated three times.
- the speed of the operating portion during the operation of the applicator was measured using a laser displacement meter (LK-H150 manufactured by Keyence Corporation).
- FIG. 35A shows the implementation conditions and results of Examples 1 and 2 and the comparative example
- FIG. 35B shows the results of Examples 1 and 2 and the comparative example as a bar graph.
- FIG. 35 according to Example 1, it was possible to realize a high transition rate as compared with the comparative example, and it was confirmed that the puncture performance was improved.
- FIG. 35 according to Example 2, it was possible to realize a higher transition rate compared to Example 1, and it was confirmed that the puncture performance was further improved.
- the parameters are the height A of the protrusion, the width B of the protrusion, the distance C between the protrusion and the substrate of the microneedle array (the width of the recess), the tip surface of the protrusion and the microneedle.
- reference numeral 20d indicates one or a plurality of protrusions
- reference numerals 30, 31, and 32 indicate a microneedle array, a substrate, and a microneedle, respectively
- reference numeral 90 indicates an adhesive layer.
- Height A is the distance between the surface of the piston plate on which the microneedle array is placed and the tip surface of the protrusion.
- the width B is the length of the protrusion along the radial direction of the piston.
- the distance C is the length between the side surface of the protrusion and the side surface of the substrate.
- the average value was adopted because the heights of the individual microneedles are not necessarily the same.
- FIG. 37 is a graph showing the relationship between the height A, the height difference D, and the D / F ratio, and the transfer rate (%) of the active ingredient to the skin of the hairless rat.
- the average length F of the microneedles was 0.5 mm
- the thickness of the substrate was 0.7 mm
- the thickness of the adhesive layer was 0.1 mm.
- Fluorescein was used as the active ingredient, and the application time of the microneedle array was 5 minutes.
- the width B was 0.7 mm
- the distance C was 0.55 mm
- the distance E was 1.55 mm. From this verification, it was found that the puncture performance tends to improve when the height A is 0.6 mm or more (the height difference D is 0.7 mm or less). It was also found that good puncture performance can be obtained even when the height difference D is 0 mm.
- FIG. 38 is a graph showing the relationship between the height A, the height difference D, and the D / F ratio, and the transfer rate (%) of the active ingredient to human skin.
- the average length F of the microneedles was 0.5 mm
- the thickness of the substrate was 0.7 mm
- the thickness of the adhesive layer was 0.1 mm.
- OVA and Red No. 40 were used as active ingredients, and the application time of the microneedle array was 5 minutes.
- the width B was 2.09 mm
- the distance C was 0.55 mm
- the distance E was 1.55 mm. From this verification, even when the active ingredient and the administration target were changed, a correlation was found between the height A and the puncture performance as in FIG.
- FIG. 39 is a graph showing the relationship between the height A, the height difference D, and the D / F ratio, and the transfer rate (%) of the active ingredient to the skin of the hairless rat.
- the average length F of the microneedles was 0.5 mm
- the thickness of the substrate was 0.7 mm
- the thickness of the adhesive layer was 0.1 mm.
- Fluorescein was used as the active ingredient, and the application time of the microneedle array was 5 minutes.
- the width B was 2.09 mm
- the distance C was 0.55 mm
- the distance E was 1.55 mm. From this verification, even when the width B was changed, a correlation was recognized between the height A and the puncture performance as in FIG.
- the average length F of the microneedles was 0.5 mm, the thickness of the substrate was 0.7 mm, and the thickness of the adhesive layer was 0.1 mm. Fluorescein was used as the active ingredient, and a microneedle array was applied to the skin of hairless rats for 5 minutes.
- the width B was 0.7 mm, the distance C was 0.55 mm, and the distance E was 1.55 mm.
- the migration rate of the active ingredient was measured when the height A (and the height difference D) was 0.1 mm (1.2 mm) and 0.6 mm (0.7 mm).
- the transition rate is 49.4% when the height A is 0.1 mm (the height difference D is 1.2 mm), and when the height A is 0.6 mm (the height difference D is 0.7 mm). It was 88.9%.
- the location of the active ingredient after administration was observed with a fluorescence microscope, when the height A was 0.1 mm (the height difference D was 1.2 mm), the puncture was non-uniform and the active ingredient was in the skin. It was found that it remained on the surface.
- the height A was 0.6 mm (the height difference D was 0.7 mm) the puncture was uniform and the active ingredient did not remain much on the skin surface. From this, it was found that the uniformity of the puncture and the transfer rate are improved by appropriately selecting the height A (or the height difference D).
- FIG. 40 is a graph showing the relationship between the height A, the height difference D, and the D / F ratio, and the transfer rate (%) of the active ingredient to human skin.
- the average length F of the microneedles was 0.5 mm, and the thickness of the substrate was 0.7 mm.
- Lidocaine was used as the active ingredient, and the application time of the microneedle array was 5 minutes.
- the width B was 2.09 mm, the distance C was 0.55 mm, and the distance E was 1.55 mm.
- the height A was set to 0.6 mm or 0.8 mm, and the height difference D was adjusted by changing the thickness of the adhesive layer. From this verification, it was suggested that the height difference D is important for improving the puncture performance.
- FIG. 41 is a graph showing the relationship between the width B and the transfer rate (%) of the active ingredient to the skin of hairless rats.
- the average length F of the microneedles was 0.5 mm
- the thickness of the substrate was 0.7 mm
- the thickness of the adhesive layer was 0.1 mm.
- Fluorescein was used as the active ingredient, and the application time of the microneedle array was 5 minutes.
- the height A was 0.6 mm
- the distance C was 0.55 mm
- the height difference D was 0.7 mm
- the distance E was 1.55 mm.
- the width B was set to 2.09 mm and 0.7 mm. From this verification, it was found that the width B does not affect the puncture performance.
- FIG. 42 is a graph showing the relationship between the distance C and the transfer rate (%) of the active ingredient to the skin of hairless rats.
- the average length F of the microneedles was 0.5 mm
- the thickness of the substrate was 0.7 mm
- the thickness of the adhesive layer was 0.1 mm.
- Fluorescein was used as the active ingredient, and the application time of the microneedle array was 5 minutes.
- the height A was 0.6 mm
- the width B was 0.7 mm
- the height difference was 0.7 mm.
- the distance C was set to 0.55 mm and 1.94 mm.
- the distance E was 1.55 mm and 2.94 mm. From this verification, it was found that the distance C does not affect the puncture performance.
- the distance between the side wall of the housing and the protrusion (the width B is fixed, so the sum of the distance and the distance C is constant) does not affect the puncture performance.
- the present invention can be defined as follows.
- An adhesive substance having adhesiveness is provided on at least a part of the surface of the second protrusion.
- the piston plate is provided with a plurality of the second protrusions, The applicator according to item 1 or 2, wherein the plurality of second protrusions are arranged so as to surround the first protrusion.
- the portion between the first protrusion and the second protrusion constitutes a recess that is recessed from the surface of these protrusions, according to any one of items 1 to 4. applicator.
- An applicator for transferring an active ingredient through the skin by puncturing the skin with a microneedle A piston plate that transmits an impact force to the microneedle array when one main surface collides with the microneedle array provided in a predetermined region of the microneedle;
- the piston plate is provided on the one main surface and has at least one projecting portion disposed so as to surround the microneedle array in a state of being separated from the predetermined region of the microneedle array.
- applicator (Item 7) Item 7.
- Item 6 wherein the protruding portion is provided with an adhesive substance having adhesiveness in at least a partial region of the surface thereof.
- the piston plate is provided with a plurality of the protrusions, The applicator according to item 6 or 7, wherein the plurality of protrusions are arranged so as to surround the microneedle array.
- the portion between the predetermined region of the microneedle array and the protruding portion constitutes a recessed portion that is recessed from the surface of the predetermined region and the protruding portion. Applicator according to item.
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Abstract
Description
図1~図10を参照して、第1実施形態に係るアプリケータAの構成を説明する。説明中、「上」との語は図1、図2~図4、図7~図10、図13及び図17~図19の上方向に対応しており、「下」との語は図1、図2~図4、図7~図10、図13及び図17~図19の下方向に対応している。すなわち、上下方向は、アプリケータAの高さ方向に対応している。
続いて、アプリケータAの製造方法について説明する。まず、上記したアプリケータAの各部品(筐体10、ピストン板20、マイクロニードルアレイ30、円錐コイルばね40及び解除部材50)を用意する。用意したマイクロニードルアレイ30のマイクロニードル32には、予めコーティングCが施されている。次に、マイクロニードルアレイ30をピストン板20の下面に取り付ける。
続いて、アプリケータAの使用方法について説明する。まず、皮膚のうち薬剤等を適用したい箇所に、マイクロニードル32が皮膚に向かうようにアプリケータAを位置決めする。この位置決めされた状態を保持したまま、解除部材50を貫通孔Hの他端側にスライドさせる(図24参照)。これにより、解除部材50の突出部50dが、ピストン板20の突起20c3を溝部G3に向けて押す。これに伴い、ピストン板20が回転する。
ところで、本実施形態のピストン板20とは異なり、突出部20d1~20d4が設けられていないピストン板200を用いた場合、マイクロニードルアレイ30が皮膚Sに衝突すると、皮膚Sがマイクロニードルアレイ30によって大きく窪みうる(図27(a)参照)。そのため、皮膚Sの弾性力により、マイクロニードルアレイ30が皮膚Sから跳ね返ってしまうことがある。そうすると、いったん皮膚Sに穿刺されたマイクロニードル32が皮膚Sから抜けてしまい、活性成分の体内への移行に影響を与えうる。なお、図27(a)は、本体20aの下面(上面とは反対側の面)に突出部20d1~20d4が設けられていないピストン板200が、皮膚Sに衝突したときの様子を示している。
以上、本発明の実施形態について詳細に説明したが、本発明は上記した実施形態に限定されるものではない。例えば、図28または図29に示されるように、突出部20d1~20d4には、その表面の少なくとも一部の領域に、接着性を有する接着性物質60が設けられていてもよい。接着性物質60としては、例えばアクリル、合成ゴム又はシリコンが挙げられる。図28は、突出部20d1~20d4の表面の全域に接着性物質60が設けられている様子を示す図である。図28(a)はピストン板20の断面を示しており、図28(b)はピストン板20の底面を示している。図29は、突出部20d1~20d4の表面の一部の領域に接着性物質60が設けられている様子を示す図である。図29(a)は、突出部20d1~20d4のそれぞれについて、突出部20d1~20d4の表面の一部に接着性物質60が設けられている様子を示している。図29(b)は、突出部20d1~20d4のうちの少なくとも一つ(同図では突出部20d1,20d3)の表面の一部に接着性物質60が設けられている様子を示している。上記のように、ピストン板20が接着性物質60を備えていると、ピストン板20が皮膚Sに衝突したときに、接着性物質60が皮膚に貼り付こうとする。従って、ピストン板20の皮膚Sからの跳ね返りをより抑制することができる。
図37は、高さA、高低差D、およびD/F比と、ヘアレスラットの皮膚への活性成分の移行率(%)との関係を示すグラフである。マイクロニードルの平均長さFを0.5mmとし、基板の厚さを0.7mmとし、粘着層の厚さを0.1mmとした。活性成分にはフルオレセインを用い、マイクロニードルアレイの適用時間は5分とした。幅Bは0.7mmとし、距離Cは0.55mmとし、距離Eは1.55mmとした。この検証より、高さAが0.6mm以上(高低差Dが0.7mm以下)の場合に穿刺性能が向上する傾向があることがわかった。また、高低差Dが0mmである場合にも良好な穿刺性能が得られることもわかった。
図38は、高さA、高低差D、およびD/F比と、ヒトの皮膚への活性成分の移行率(%)との関係を示すグラフである。マイクロニードルの平均長さFを0.5mmとし、基板の厚さを0.7mmとし、粘着層の厚さを0.1mmとした。活性成分にはOVAおよび赤色40号を用い、マイクロニードルアレイの適用時間は5分とした。幅Bは2.09mmとし、距離Cは0.55mmとし、距離Eは1.55mmとした。この検証より、活性成分および投与対象物を変えても、図37と同様に、高さAと穿刺性能との間に相関が認められた。
図39は、高さA、高低差D、およびD/F比と、ヘアレスラットの皮膚への活性成分の移行率(%)との関係を示すグラフである。マイクロニードルの平均長さFを0.5mmとし、基板の厚さを0.7mmとし、粘着層の厚さを0.1mmとした。活性成分にはフルオレセインを用い、マイクロニードルアレイの適用時間は5分とした。幅Bは2.09mmとし、距離Cは0.55mmとし、距離Eは1.55mmとした。この検証より、幅Bを変えても、図37と同様に、高さAと穿刺性能との間に相関が認められた。
マイクロニードルの平均長さFを0.5mmとし、基板の厚さを0.7mmとし、粘着層の厚さを0.1mmとした。活性成分にはフルオレセインを用い、ヘアレスラットの皮膚にマイクロニードルアレイを5分間適用した。幅Bは0.7mmとし、距離Cは0.55mmとし、距離Eは1.55mmとした。高さA(および高低差D)を0.1mm(1.2mm)とした場合と0.6mm(0.7mm)とした場合とで活性成分の移行率を測定した。その結果、移行率は、高さAが0.1mm(高低差Dが1.2mm)のときには49.4%であり、高さAが0.6mm(高低差Dが0.7mm)のときには88.9%であった。また、投与後の活性成分の所在を蛍光顕微鏡で観察したところ、高さAが0.1mm(高低差Dが1.2mm)の場合には穿刺が不均一であり、かつ活性成分が皮膚の表面に残っていることが分かった。一方、高さAが0.6mm(高低差Dが0.7mm)の場合には穿刺が均一であり、かつ活性成分が皮膚の表面にあまり残らなかった。このことから、高さA(または高低差D)を適切に選択することで、穿刺の均一性と移行率とが向上することがわかった。
図40は、高さA、高低差D、およびD/F比と、ヒトの皮膚への活性成分の移行率(%)との関係を示すグラフである。マイクロニードルの平均長さFを0.5mmとし、基板の厚さを0.7mmとした。活性成分にはリドカインを用い、マイクロニードルアレイの適用時間は5分とした。幅Bは2.09mmとし、距離Cは0.55mmとし、距離Eは1.55mmとした。高さAは0.6mmまたは0.8mmに設定し、高低差Dは粘着層の厚みを変えることで調整した。この検証より、高低差Dが穿刺性能の向上にとって重要であることが示唆された。
図41は、幅Bと、ヘアレスラットの皮膚への活性成分の移行率(%)との関係を示すグラフである。マイクロニードルの平均長さFを0.5mmとし、基板の厚さを0.7mmとし、粘着層の厚さを0.1mmとした。活性成分にはフルオレセインを用い、マイクロニードルアレイの適用時間は5分とした。高さAは0.6mmとし、距離Cは0.55mmとし、高低差Dは0.7mmとし、距離Eは1.55mmとした。幅Bは2.09mmおよび0.7mmに設定した。この検証より、幅Bは穿刺性能に影響しないことがわかった。
図42は、距離Cと、ヘアレスラットの皮膚への活性成分の移行率(%)との関係を示すグラフである。マイクロニードルの平均長さFを0.5mmとし、基板の厚さを0.7mmとし、粘着層の厚さを0.1mmとした。活性成分にはフルオレセインを用い、マイクロニードルアレイの適用時間は5分とした。高さAは0.6mmとし、幅Bは0.7mmとし、高低差は0.7mmとした。距離Cは0.55mmおよび1.94mmに設定した。距離Eは1.55mmおよび2.94mmとした。この検証より、距離Cは穿刺性能に影響しないことがわかった。また、筐体の側壁と突出部との間の距離(幅Bが固定されているので、この距離と距離Cとの和は一定である)も穿刺性能に影響しない。
(項目1)
マイクロニードルの皮膚への穿刺により皮膚を通して活性成分を体内に移行するためのアプリケータであって、
第1の突出部と、少なくとも一つの第2の突出部とが一方の主面に設けられたピストン板を備え、
前記第1の突出部の表面には前記マイクロニードルが配置され、
前記第2の突出部は、前記第1の突出部とは離間した状態で前記第1の突出部の周囲に配置されている、アプリケータ。
(項目2)
前記第2の突出部には、その表面の少なくとも一部の領域に接着性を有する接着性物質が設けられている、項目1に記載のアプリケータ。
(項目3)
前記ピストン板には前記第2の突出部が複数設けられており、
複数の前記第2の突出部は、前記第1の突出部を囲むように配置されている、項目1又は2に記載のアプリケータ。
(項目4)
前記第2の突出部は、前記第1の突出部の周囲の全体を囲む環状を呈する、項目1又は2に記載のアプリケータ。
(項目5)
前記第1の突出部と、前記第2の突出部との間の部分は、これらの突出部の表面よりも窪んだ凹部を構成している、項目1~4のいずれか一項に記載のアプリケータ。
(項目6)
マイクロニードルの皮膚への穿刺により皮膚を通して活性成分を体内に移行するためのアプリケータであって、
前記マイクロニードルが所定の領域に設けられたマイクロニードルアレイに一方の主面が衝突することにより前記マイクロニードルアレイに衝撃力を伝達するピストン板を備え、
前記ピストン板は、前記一方の主面に設けられると共に、前記マイクロニードルアレイの前記所定の領域とは離間した状態で前記マイクロニードルアレイを囲みうるように配置された、少なくとも一つの突出部を有する、アプリケータ。
(項目7)
前記突出部には、その表面の少なくとも一部の領域に接着性を有する接着性物質が設けられている、項目6に記載のアプリケータ。
(項目8)
前記ピストン板には前記突出部が複数設けられており、
複数の前記突出部は、前記マイクロニードルアレイを囲みうるように配置されている、項目6又は7に記載のアプリケータ。
(項目9)
前記突出部は、前記マイクロニードルアレイの周囲の全体を囲む環状を呈する、項目6又は7に記載のアプリケータ。
(項目10)
前記マイクロニードルアレイの前記所定の領域と、前記突出部との間の部分は、前記所定の領域及び前記突出部の表面よりも窪んだ凹部を構成している、項目6~9のいずれか一項に記載のアプリケータ。
Claims (15)
- マイクロニードルの皮膚への穿刺により皮膚を通して活性成分を体内に移行するためのアプリケータであって、
前記マイクロニードルが位置するマイクロニードル領域と少なくとも一つの突出部とが一方の主面に設けられたピストン板を備え、
前記突出部は、前記マイクロニードル領域とは離間した状態で前記マイクロニードル領域の周囲に配置されている、アプリケータ。 - 前記マイクロニードル領域に第1の突出部が設けられ、前記少なくとも一つの突出部が少なくとも一つの第2の突出部であり、
前記第1の突出部の表面には前記マイクロニードルが配置され、
前記第2の突出部は、前記第1の突出部とは離間した状態で前記第1の突出部の周囲に配置されている、請求項1に記載のアプリケータ。 - 前記第2の突出部には、その表面の少なくとも一部の領域に接着性を有する接着性物質が設けられている、請求項2に記載のアプリケータ。
- 前記ピストン板には前記第2の突出部が複数設けられており、
複数の前記第2の突出部は、前記第1の突出部を囲むように配置されている、請求項2又は3に記載のアプリケータ。 - 前記第2の突出部は、前記第1の突出部の周囲の全体を囲む環状を呈する、請求項2又は3に記載のアプリケータ。
- 前記第1の突出部と、前記第2の突出部との間の部分は、これらの突出部の表面よりも窪んだ凹部を構成している、請求項2~5のいずれか一項に記載のアプリケータ。
- 前記少なくとも一つの突出部の先端面と、該先端面よりも外方に突出する前記マイクロニードルの先端との高低差が0mm以上である、
請求項1~6のいずれか一項に記載のアプリケータ。 - 前記高低差が0~1.0mmである、
請求項7に記載のアプリケータ。 - 前記高低差をDとし、前記マイクロニードルの平均長さをFとして、値D/Fが0.0~1.4である、
請求項7または8に記載のアプリケータ。 - 前記値D/Fが1.0~1.4である、
請求項9に記載のアプリケータ。 - マイクロニードルの皮膚への穿刺により皮膚を通して活性成分を体内に移行するためのアプリケータであって、
前記マイクロニードルが所定の領域に設けられたマイクロニードルアレイに一方の主面が衝突することにより前記マイクロニードルアレイに衝撃力を伝達するピストン板を備え、
前記ピストン板は、前記一方の主面に設けられると共に、前記マイクロニードルアレイの前記所定の領域とは離間した状態で前記マイクロニードルアレイを囲みうるように配置された、少なくとも一つの突出部を有する、アプリケータ。 - 前記突出部には、その表面の少なくとも一部の領域に接着性を有する接着性物質が設けられている、請求項11に記載のアプリケータ。
- 前記ピストン板には前記突出部が複数設けられており、
複数の前記突出部は、前記マイクロニードルアレイを囲みうるように配置されている、請求項11又は12に記載のアプリケータ。 - 前記突出部は、前記マイクロニードルアレイの周囲の全体を囲む環状を呈する、請求項11又は12に記載のアプリケータ。
- 前記マイクロニードルアレイの前記所定の領域と、前記突出部との間の部分は、前記所定の領域及び前記突出部の表面よりも窪んだ凹部を構成している、請求項11~14のいずれか一項に記載のアプリケータ。
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ES2756574T3 (es) | 2020-04-27 |
JP6215343B2 (ja) | 2017-10-18 |
US20160263363A1 (en) | 2016-09-15 |
EP3067088A4 (en) | 2017-10-25 |
US10086183B2 (en) | 2018-10-02 |
JPWO2015068702A1 (ja) | 2017-03-09 |
TWI636805B (zh) | 2018-10-01 |
EP3067088A1 (en) | 2016-09-14 |
TW201532637A (zh) | 2015-09-01 |
EP3067088B1 (en) | 2019-09-04 |
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