Puncture aid

Abstract

To provide a technology for making it possible to stably puncture a puncture planned part of skin with a puncture needle.SOLUTION: A puncture aid 1 is used for binding a puncture planned part 3 of skin 2 and its peripheral part in puncturing the skin 2 with a puncture needle 5. The puncture aid 1 comprises a holding unit 10 for holding the skin 2 and a skin extension unit 40 for extending the skin 2. The holding unit 10 has a first notch 23 into which the puncture needle 5 is to be inserted, the notch positioned on a first surface 21a of a first holding body unit 21 in contact with the skin 2 held by the holding unit 10. In puncturing the skin 2 with the puncture needle 5, the skin extension unit 40 extends the puncture planned part 3 of the skin 2 toward the side opposite to the first notch 23's surface on which the skin extension unit 40 is in contact with the skin.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a puncture aid. [Background technology]

[0002] A puncture assisting device used to restrain the site on the skin to be punctured and its surrounding area when puncturing the skin with a puncture needle is disclosed in, for example, Patent Document 1. This puncture assisting device includes a clamping portion that clamps the skin. The clamping portion has an insertion portion into which the puncture needle is inserted, at a skin contact surface that comes into contact with the skin clamped by the clamping portion. When puncturing the skin with the puncture needle, the puncture assisting device is used to restrain the site on the skin to be punctured that is clamped by the clamping portion and its surrounding area. This suppresses deformation of the area on the skin to be punctured and makes it easier for the puncture needle inserted into the insertion portion to puncture the site on the skin to be punctured. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2018 / 012617 Summary of the Invention [Problem to be solved by the invention]

[0004] When a puncture needle is inserted into a site on the skin to be punctured, if the site on the skin to be punctured elastically deforms, the restoring force that attempts to return the site on the skin to its original shape before elastic deformation may make it difficult for the puncture needle to puncture or may even be pushed back, making it difficult to stably insert the puncture needle into the site on the skin to be punctured. Therefore, there is a need for a puncture aid that enables the puncture needle to stably puncture the site on the skin to be punctured.

[0005] An object of the present invention is to provide a puncture aid that enables a puncture needle to stably puncture a site in the skin to be punctured. [Means for solving the problem]

[0006] The present invention is a puncture aid used to restrain the site to be punctured on the skin and its surrounding area when puncturing the skin with a puncture needle. One embodiment of the puncture assisting device of the present invention comprises a clamping portion that clamps the skin and a skin stretching portion that stretches the skin. In one embodiment of the puncture assisting device of the present invention, the clamping section has an insertion section, into which the puncture needle is inserted, on a skin contact surface that comes into contact with the skin clamped by the clamping section. In one embodiment of the puncture aid of the present invention, when the puncture needle is inserted into the skin, the skin stretching portion stretches the intended puncture site of the skin in the direction opposite to the surface of the insertion portion where the skin stretching portion contacts the skin. Other features, advantages and embodiments of the present invention are described below. [Effects of the Invention]

[0007] The puncture assisting device of the present invention allows the puncture needle to be stably inserted into the intended puncture site in the skin. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view of a first embodiment of a puncture assisting device of the present invention. [Figure 2] 2 is a perspective view showing the state in which the puncture aid shown in FIG. 1 is used, and is a perspective view showing the puncture aid in the state shown in FIG. [Figure 3] Figure 3 is a diagram showing the use state of the puncture assisting device shown in Figure 1, and is a cross-sectional view along the thickness direction of the skin, schematically showing the state in which the skin is clamped between the first clamping part and the second clamping part. [Figure 4] Figure 4 is a diagram showing the state in which the skin stretching unit has been moved toward the skin from the state shown in Figure 3, and is a cross-sectional view schematically showing the state in which the area of ​​the skin to be punctured has been stretched by the skin stretching unit. [Figure 5] FIG. 5 is a perspective view of a second embodiment of the puncture assisting device of the present invention. [Figure 6]FIG. 6 is a view of the puncture aid shown in FIG. 5, which corresponds to FIG. [Figure 7] FIG. 7 is a view corresponding to FIG. 4 showing another embodiment of the puncture assisting device of the present invention. [Figure 8] FIG. 8 is a perspective view of still another embodiment of the puncture assisting device of the present invention. [Figure 9] FIG. 9 is a perspective view of the puncture assisting device shown in FIG. 8 in a closed state. DETAILED DESCRIPTION OF THE INVENTION

[0009] The present invention will be described below based on preferred embodiments with reference to the drawings. In the following description of the drawings, the same or similar parts are designated by the same or similar reference numerals. The drawings are basically schematic, and the ratios of the dimensions may differ from those of the actual ones.

[0010] First Embodiment 1 to 4 show a puncture aid 1 according to a first embodiment of the present invention. The puncture aid 1 is used to restrain a site 3 of the skin 2 to be punctured and its surrounding area when a puncture needle 5 is inserted into the skin 2. In FIG. 2, the skin 2 is shown imaginarily by a two-dot chain line. In this embodiment, the puncture needle 5 that is inserted into the site 3 of the skin 2 to be punctured is a microneedle.

[0011] As shown in FIGS. 1 and 2, the puncture assisting tool 1 includes a clamping section 10 and a skin stretching section 40. The clamping section 10 clamps the skin 2. The skin stretching section 40 stretches the skin 2. The clamping section 10 includes a first clamping section 20 and a second clamping section 30. The puncture assisting tool 1 also includes a movable section 50 and a rotation shaft 60.

[0012] The first clamping unit 20 has a first clamping body 21 and a first support portion 22. The first clamping body 21 is shaped like a rectangular flat plate. The first clamping body 21 is shaped like a thin plate. The short side of the first clamping body 21 is the width direction of the first clamping body 21. The first support portion 22 protrudes from a first end portion 211, which is one end portion of the first clamping body 21 in the longitudinal direction. In this embodiment, the first clamping unit 20 has a pair of first support portions 22. The pair of first support portions 22 protrude in the longitudinal direction of the first clamping body 21 from both ends in the width direction of the first clamping body 21 at the first end portion 211 of the first clamping body 21. The pair of first support portions 22 are rotatably supported by a rotation shaft 60. Therefore, the first clamping unit 20 is rotatable around the rotation shaft 60 .

[0013] The first clamping unit 20 has a first notch 23. The first notch 23 is formed in a second end 212, which is the other end in the longitudinal direction of the first clamping main body 21. The second end 212 of the first clamping main body 21 is an end of the first clamping unit 20 located on the opposite side from the rotation shaft 60. The first notch 23 is open to the second end 212 of the first clamping main body 21. Therefore, the first notch 23 is open to the end of the first clamping unit 20 located on the opposite side from the rotation shaft 60. The first notch 23 penetrates the first clamping main body 21 in the thickness direction of the first clamping main body 21.

[0014] The first cutout 23 has a pair of first side surfaces 23a and a first connecting surface 23b. The pair of first side surfaces 23a extend from the second end 212 of the first clamping main body 21 in the longitudinal direction of the first clamping main body 21. The pair of first side surfaces 23a are flat surfaces parallel to each other. The first connecting surface 23b connects the ends of the pair of first side surfaces 23a opposite the second end 212 of the first clamping main body 21. The first connecting surface 23b is a curved surface that convexly extends away from the second end 212 of the first clamping main body 21.

[0015] The second clamping unit 30 has a second clamping body 31 and a second support portion 32. The second clamping body 31 is shaped like a rectangular flat plate. The second clamping body 31 is shaped like a thin plate. The short side of the second clamping body 31 is the width direction of the second clamping body 31. The second support portion 32 protrudes from a first end portion 311, which is one end portion of the second clamping body 31 in the longitudinal direction. In this embodiment, the second clamping unit 30 has a pair of second support portions 32. The pair of second support portions 32 protrude in the longitudinal direction of the second clamping body 31 from positions at the first end portion 311 of the second clamping body 31 that are spaced a predetermined distance from both ends of the second clamping body 31 in the width direction. The pair of second support portions 32 are rotatably supported by a rotation shaft 60. Therefore, the second clamping unit 30 is rotatable around the rotation shaft 60 .

[0016] The second clamping unit 30 has a second notch 33. The second notch 33 is formed in a second end 312, which is the other end in the longitudinal direction of the second clamping main body 31. The second end 312 of the second clamping main body 31 is an end of the second clamping unit 30 located on the opposite side from the rotation shaft 60. The second notch 33 is open to the second end 312 of the second clamping main body 31. Therefore, the second notch 33 is open to the end of the second clamping unit 30 located on the opposite side from the rotation shaft 60. The second notch 33 penetrates the second clamping main body 31 in the thickness direction of the second clamping main body 31.

[0017] The second cutout 33 has a pair of second side surfaces 33a and a second connecting surface 33b. The pair of second side surfaces 33a extend from the second end 312 of the second clamping main body 31 in the longitudinal direction of the second clamping main body 31. The pair of second side surfaces 33a are flat surfaces parallel to each other. The second connecting surface 33b connects the ends of the pair of second side surfaces 33a opposite the second end 312 of the second clamping main body 31. The second connecting surface 33b is a curved surface that convexly extends away from the second end 312 of the second clamping main body 31.

[0018] The longitudinal length of the first clamping body portion 21 and the longitudinal length of the second clamping body portion 31 are the same. The width of the first clamping body portion 21 and the width of the second clamping body portion 31 are the same. The first clamping portion 20 and the second clamping portion 30 are rotatable about a rotation axis 60 in directions toward and away from each other. When the first clamping portion 20 and the second clamping portion 30 move toward each other, the first clamping body portion 21 and the second clamping body portion 31 can overlap each other. When the first clamping body portion 21 and the second clamping body portion 31 are overlapped with each other, the first notch 23 and the second notch 33 overlap each other. Specifically, a pair of first side surfaces 23a of the first cutout 23 and a pair of second side surfaces 33a of the second cutout 33 overlap each other, and a first connecting surface 23b of the first cutout 23 and a second connecting surface 33b of the second cutout 33 overlap each other.

[0019] As shown in FIGS. 3 and 4 , the first surface 21a, which is the surface of the first clamping main body 21 facing the second clamping main body 31, and the first surface 31a, which is the surface of the second clamping main body 31 facing the first clamping main body 21, are skin contact surfaces that come into contact with the skin 2 clamped by the clamping unit 10. The first cutout 23 is an insertion portion into which the puncture needle 5 is inserted. Therefore, the clamping unit 10 has an insertion portion into which the puncture needle 5 is inserted on the first surface 21a of the first clamping main body 21, which is the skin contact surface that comes into contact with the skin 2 clamped by the clamping unit 10. Therefore, the first clamping unit 20 has an insertion portion. The insertion portion is the first cutout 23 that opens at the end of the first clamping unit 20 located on the opposite side from the rotation axis 60. The second clamping unit 30 clamps the skin 2 together with the first clamping unit 20.

[0020] 1 and 2, the movable section 50 has a movable main body section 51 and a movable support section 52. The skin stretching section 40 is provided on the movable section 50. The movable section 50 is disposed on the opposite side of the second clamping section 30 from the first clamping section 20. Therefore, the movable section 50 is disposed in a position where it sandwiches the second clamping section 30 together with the first clamping section 20. Therefore, the second clamping section 30 is disposed between the first clamping section 20 and the skin stretching section 40.

[0021] The movable main body part 51 is in the shape of a rectangular flat plate. The movable main body part 51 is in the shape of a thin plate. The short side direction of the movable main body part 51 is the width direction of the movable main body part 51. The width of the movable main body part 51 is smaller than the width of the first clamping main body part 21 and the width of the second clamping main body part 31. The movable support part 52 protrudes from one end of the movable main body part 51 in the longitudinal direction. The movable support part 52 is rotatably supported by a rotation shaft 60. The movable part 50 is rotatable around the rotation shaft 60.

[0022] One of the pair of first support sections 22, one of the pair of second support sections 32, the movable support section 52, the other of the pair of second support sections 32, and the other of the pair of first support sections 22 are arranged side by side in this order in the axial direction of the rotation shaft 60. The pair of first support sections 22, the pair of second support sections 32, and the movable support section 52 are rotatably supported on the rotation shaft 60, and thus the first clamping section 20, the second clamping section 30, and the movable section 50 are supported rotatably around the rotation shaft 60. Therefore, the first clamping section 20, the second clamping section 30, and the skin stretching section 40 are rotatable around the rotation shaft 60.

[0023] The skin stretching unit 40 protrudes from the other longitudinal end of the movable main body unit 51 toward the second clamping unit 30. The skin stretching unit 40 has a rectangular prism shape. As shown in FIG. 2 , the skin stretching unit 40 penetrates the second notch 33 when the skin stretching unit 40 moves in a direction approaching the second clamping unit 30. Therefore, the second notch 33 is a penetration portion through which the skin stretching unit 40 penetrates when the skin stretching unit 40 moves in a direction approaching the second clamping unit 30. Therefore, a penetration portion is formed in the second clamping unit 30. The penetration portion is the second notch 33 that opens at the end of the second clamping unit 30 located on the opposite side from the rotation axis 60.

[0024] 4, skin stretching unit 40 rotates about rotation axis 60, passes through second notch 33, and stretches site 3 to be punctured of skin 2 clamped between first clamping unit 20 and second clamping unit 30 toward first notch 23, entering inside first notch 23. Therefore, when puncturing needle 5 punctures skin 2, skin stretching unit 40 stretches site 3 to be punctured of skin 2 in first notch 23 toward first surface 21a of first clamping main body unit 21, i.e., the side opposite to the surface where skin stretching unit 40 comes into contact with the skin.

[0025] The contact area 41 of the skin stretching part 40 with the skin 2 is formed, for example, by a urethane sheet. The hardness of the contact area 41 of the skin stretching part 40 with the skin 2 is preferably A10 or more, more preferably A15 or more, and even more preferably A20 or more. The hardness of the contact area 41 of the skin stretching part 40 with the skin 2 is preferably A90 or less, more preferably A80 or less, and even more preferably A50 or less. The hardness of the contact portion can be measured using a durometer type A in accordance with JIS K 6253-3.

[0026] When puncturing the skin 2 with the puncture needle 5, the puncture assist device 1 of this embodiment is used. As shown in FIG. 3 , first, the skin 2 is clamped between the first clamping unit 20 and the second clamping unit 30 to restrict movement of the skin. Then, as shown in FIG. 4 , the skin stretching unit 40 is moved toward the second clamping unit 30 and penetrates the second notch 33, thereby stretching the site 3 of the skin 2 to be punctured toward the side opposite to the surface of the skin stretching unit 40 that contacts the skin in the first notch 23. In this state, the puncture needle 5 inserted into the first notch 23 is punctured into the site 3 of the skin 2 to be punctured.

[0027] The skin stretching portion 40 stretches the site 3 of the skin 2 to be punctured toward the side opposite to the surface where the skin stretching portion 40 contacts the skin in the first cutout 23. This makes it difficult for the site 3 of the skin 2 to be punctured to elastically deform when the puncture needle 5 inserted into the first cutout 23 punctures the skin 2. This avoids the problem of the site 3 of the skin 2 to be punctured being elastically deformed when the puncture needle 5 punctures the site 3 of the skin 2, making it difficult for the puncture needle 5 to puncture the skin 2 or being pushed back by a restoring force that attempts to restore the site 3 of the skin 2 to its original shape before the elastic deformation. As a result, the puncture needle 5 can stably puncture the site 3 of the skin 2 to be punctured.

[0028] Furthermore, after the skin 2 is clamped between the first clamping unit 20 and the second clamping unit 30, the skin stretching unit 40 can be moved in a direction approaching the second clamping unit 30 and penetrated through the second notch 33, thereby stretching the site 3 of the skin 2 to be punctured toward the side opposite to the surface where the skin stretching unit 40 contacts the skin in the first notch 23. Therefore, the stretched state of the site 3 of the skin 2 to be punctured can be stabilized.

[0029] By rotating at least one of the first clamping unit 20 and the second clamping unit 30 around the rotation axis 60, the first clamping unit 20 and the second clamping unit 30 are brought closer to each other and the skin 2 is clamped between the first clamping unit 20 and the second clamping unit 30. This configuration of the puncture assist tool 1 is suitable as a configuration for clamping the skin 2 between the first clamping unit 20 and the second clamping unit 30. Furthermore, in this configuration of the puncture assist tool 1, the skin stretching unit 40 rotates around the rotation axis 60 and passes through the second notch 33, stretching the site 3 to be punctured of the skin 2 clamped between the first clamping unit 20 and the second clamping unit 30 towards the first notch 23 and entering the inside of the first notch 23. At this time, because second notch 33 is open at the end of second clamping unit 30 located on the opposite side from rotation axis 60, skin stretching unit 40 can easily penetrate second notch 33. Furthermore, because first notch 23 is open at the end of first clamping unit 20 located on the opposite side from rotation axis 60, skin stretching unit 40 can easily enter inside first notch 23. Therefore, site 3 of skin 2 to be punctured can easily be stretched by skin stretching unit 40.

[0030] The hardness of the contact area 41 of the skin stretching portion 40 with the skin 2 is not less than A10 and not more than A90. Accordingly, when the puncture needle 5 punctures the site 3 of the skin 2 that is stretched by the skin stretching portion 40 toward the side opposite to the surface where the skin stretching portion 40 contacts the skin in the first cutout 23, the skin stretching portion 40 can stably support the site 3 of the skin 2 that is to be punctured. As a result, the puncture needle 5 can more stably puncture the site 3 of the skin 2. Specifically, by setting the hardness of the contact area 41 of the skin stretching portion 40 with the skin 2 within the above-mentioned range, the puncture performance is not reduced during puncture, damage to the puncture needle 5, including microneedles, can be suppressed, and the skin 2 can be clamped without damaging the skin 2 when clamped and with little pain.

[0031] By appropriately changing the hardness of the contact area 41 of the skin 2 in the skin stretching portion 40, stable puncture can be performed even if the puncture speed when the puncture needle 5 punctures the intended puncture area 3 of the skin 2 is slow.

[0032] According to the puncture assisting tool 1 of this embodiment, for example, the first clamping part 20 and the second clamping part 30 can be operated with the thumb and index finger of the operator, and the skin stretching part 40 can be operated with the middle finger. Therefore, the operator can operate the puncture assisting tool 1 with one hand, making it easy for the operator to perform the puncture operation by himself.

[0033] Second Embodiment Next, a preferred second embodiment of the puncture assisting device of the present invention will be described. Regarding the second embodiment, only the differences from the first embodiment will be described. The second embodiment is similar to the first embodiment except for the points not specifically described, and the description of the first embodiment applies as appropriate. The puncture assisting device of the second embodiment is configured such that the second clamping portion of the first embodiment is omitted. Furthermore, in the puncture assisting device of the second embodiment, the movable portion functions as the second clamping portion.

[0034] 5 and 6, the clamping section 10 of the puncture assisting tool 1 of the second embodiment has a first clamping section 20 and a movable section 50 as a second clamping section. Therefore, the second clamping section includes a skin stretching section 40. The movable section 50 clamps the skin 2 together with the first clamping section 20. The first clamping section 20 and the movable section 50 are rotatable about a rotation axis 60.

[0035] First notch 23 is a notch that opens at the end of first clamping unit 20 located on the opposite side from rotation axis 60. As movable unit 50 rotates around rotation axis 60, skin stretching unit 40 stretches site 3 to be punctured on skin 2 toward first notch 23, and enters the inside of first notch 23.

[0036] 6, when puncturing needle 5 punctures skin 2, first clamping unit 20 and movable unit 50 clamp skin 2, and at the same time, skin stretching unit 40 stretches site 3 of skin 2 to be punctured toward the side opposite to the surface where skin stretching unit 40 contacts the skin in first cutout 23. This simplifies the process of puncturing skin 2 with puncturing needle 5.

[0037] By rotating at least one of the first clamping unit 20 and the movable unit 50 around the rotation axis 60, the first clamping unit 20 and the movable unit 50 are brought closer to each other, and the skin 2 is sandwiched between the first clamping unit 20 and the movable unit 50. This configuration of the puncture assist tool 1 is suitable for sandwiching the skin 2 between the first clamping unit 20 and the movable unit 50. In addition, in this configuration of the puncture assist tool 1, as the movable unit 50 rotates around the rotation axis, the skin stretching unit 40 stretches the site 3 of the skin 2 to be punctured toward the first notch 23 and enters the inside of the first notch 23. At this time, because the first notch 23 is open at the end of the first clamping unit 20 opposite the rotation axis 60, the skin stretching unit 40 can easily enter the inside of the first notch 23. Therefore, the site 3 of the skin 2 to be punctured can be easily stretched by the skin stretching unit 40.

[0038] Other embodiments of the puncture assisting device of the present invention are shown in Figure 7 and subsequent figures. In the other embodiments described below, configurations that differ from the above-described embodiment will be mainly described, and similar configurations will be assigned the same reference numerals and description thereof will be omitted. For configurations that are not specifically described in the embodiments described below, the description of the above-described embodiment will be applied as appropriate.

[0039] 7, in the puncture assisting device 1 of the second embodiment, the width of the movable part 50 may be the same as the width of the first clamping part 20. This makes it possible to increase the contact area of ​​the movable part 50 with the skin 2 when the first clamping part 20 and the movable part 50 are brought closer to each other to clamp the skin 2 between them. Therefore, the skin 2 can be stably clamped by the first clamping part 20 and the movable part 50.

[0040] 8 and 9, the first clamping section 20 and the second clamping section 30 of the puncture assisting device 1 may be configured as a pair of clamping pieces like clothespins, and the pair of clamping pieces may be configured to be biased by a spring in a direction in which they approach each other. This allows the first clamping section 20 and the second clamping section 30 to clamp the skin 2 more stably.

[0041] The present invention has been described above based on its preferred embodiments, but the present invention is not limited to the above embodiments and can be modified as appropriate within the scope of the invention.

[0042] For example, in the above embodiment, the first notch 23 that opens at the end of the first clamping unit 20 located on the opposite side from the rotation axis 60 is used as the insertion portion into which the puncture needle 5 is inserted, but this is not limited to this. For example, a through-hole that penetrates the first clamping main body unit 21 in the thickness direction of the first clamping main body unit 21 may also be used as the insertion portion into which the puncture needle 5 is inserted.

[0043] For example, in the above embodiment, first cutout 23 has a shape including a pair of first side surfaces 23a and first connecting surface 23b, but this is not limited to this. In short, the shape of first cutout 23 is not particularly limited as long as skin stretching section 40 can rotate about rotation axis 60 to stretch site 3 of skin 2 to be punctured toward first cutout 23 and enter the inside of first cutout 23.

[0044] For example, in the above embodiment, the second notch 33 that opens at the end of the second clamping unit 30 opposite the rotation axis 60 is used as the penetration portion through which the skin stretching unit 40 penetrates when the skin stretching unit 40 moves in a direction approaching the second clamping unit 30, but this is not limited to this. For example, a through hole that penetrates the second clamping main body unit 31 in the thickness direction of the second clamping main body unit 31 may be used as the penetration portion.

[0045] For example, in the above embodiment, the second cutout 33 has a shape including a pair of second side surfaces 33a and a second connecting surface 33b, but is not limited to this. In short, the shape of the second cutout 33 is not particularly limited as long as the skin stretching unit 40 can pass through the second cutout 33 when the skin stretching unit 40 moves in a direction approaching the second clamping unit 30.

[0046] For example, in the above embodiment, at least one of the first clamping unit 20 and the second clamping unit 30 is rotated about the rotation axis 60 to bring the first clamping unit 20 and the second clamping unit 30 closer to each other and sandwich the skin 2 between them, but this is not limiting. For example, the first clamping unit 20 and the second clamping unit 30 may be moved parallel to each other to bring them closer to each other and sandwich the skin 2 between them.

[0047] For example, in the above embodiment, the first clamping body 21 of the first clamping unit 20 is in the shape of a rectangular flat plate, but this is not limited thereto. In short, the shape of the first clamping unit 20 is not particularly limited as long as the first clamping unit 20 has an insertion portion into which the puncture needle 5 is inserted.

[0048] For example, in the above embodiment, second clamping unit 30 has second clamping body 31 in the shape of a rectangular flat plate, but this is not limited thereto. In short, as long as second clamping unit 30 can clamp skin 2 together with first clamping unit 20, the shape of second clamping unit 30 is not particularly limited.

[0049] For example, in the above embodiment, the movable main body 51 of the movable part 50 is in the shape of a rectangular flat plate, but this is not limited thereto. In short, the shape of the movable part 50 is not particularly limited as long as the movable part 50 is provided with the skin stretching part 40 and is rotatable around the rotation axis 60.

[0050] For example, in the above embodiment, the puncture needle 5 inserted into the intended puncture site 3 of the skin 2 was a microneedle, but this is not limited to this. For example, the puncture needle 5 inserted into the intended puncture site 3 of the skin 2 may be an injection needle that is thicker and longer than a microneedle. In this specification, the term "microneedle" refers to a fine needle with a diameter and / or length of micrometer size, i.e., less than 1 mm. There are no particular limitations on the type of microneedle that can be applied to the present invention, and it may be, for example, any of hollow, solid, and dissolving types. [Explanation of symbols]

[0051] 1 Puncture aid 2 skin 3. Planned puncture site 5 Puncture needle 10 Clamping part 20 First clamping part 23 First notch (insertion part) 30 Second clamping part 33 Second notch (through hole) 40 Skin stretching section 41 Contact area 60 Rotating Axis

Claims

1. A puncture assisting device used to restrain the intended puncture site and its surrounding area when puncturing the skin with a puncture needle, The device includes a clamping section that clamps the skin and a skin stretching section that stretches the skin, the clamping unit has an insertion portion into which the puncture needle is inserted, on a skin contact surface that comes into contact with the skin clamped by the clamping unit; the skin stretching portion stretches the site of the skin to be punctured toward the opposite side to the surface of the insertion portion where the skin stretching portion comes into contact with the skin when the puncture needle is punctured into the skin; the clamping unit includes a first clamping unit having the insertion unit, and a second clamping unit disposed between the first clamping unit and the skin stretching unit and configured to clamp the skin together with the first clamping unit, The second clamping portion has a through-hole formed therein, When the skin stretching portion moves in a direction approaching the second clamping portion, the skin stretching portion penetrates the penetration portion, The first clamping portion, the second clamping portion, and the skin stretching portion are rotatable around a rotation axis, the insertion portion is a first notch that is open at an end portion of the first clamping portion that is located on the opposite side to the rotation shaft, the through-hole portion is a second notch that is open at an end portion of the second clamping portion that is located on the opposite side from the rotation shaft, The skin stretching portion rotates around the rotation axis, penetrates the second notch, stretches the area of ​​the skin to be punctured, which is clamped between the first clamping portion and the second clamping portion, toward the first notch, and enters inside the first notch.

2. A puncture aid used to restrain the intended puncture site and its surrounding area when inserting a puncture needle into the skin, The device includes a clamping section that clamps the skin and a skin stretching section that stretches the skin, the clamping unit has an insertion portion into which the puncture needle is inserted, on a skin contact surface that comes into contact with the skin clamped by the clamping unit; the skin stretching portion stretches the site of the skin to be punctured toward the opposite side to the surface of the insertion portion where the skin stretching portion comes into contact with the skin when the puncture needle is punctured into the skin; the clamping unit includes a first clamping unit having the insertion unit and a second clamping unit configured to clamp the skin together with the first clamping unit, the second clamping portion includes the skin stretching portion, The puncture assisting device, wherein the first clamping portion and the second clamping portion are rotatable about a rotation axis.

3. A puncture aid used to restrain the intended puncture site and its surrounding area when inserting a puncture needle into the skin, The device includes a clamping section that clamps the skin and a skin stretching section that stretches the skin, the clamping unit has an insertion portion into which the puncture needle is inserted, on a skin contact surface that comes into contact with the skin clamped by the clamping unit; the skin stretching portion stretches the site of the skin to be punctured toward the opposite side to the surface of the insertion portion where the skin stretching portion comes into contact with the skin when the puncture needle is punctured into the skin; the clamping unit includes a first clamping unit having the insertion unit and a second clamping unit configured to clamp the skin together with the first clamping unit, the second clamping portion includes the skin stretching portion, The puncture assisting tool, wherein the insertion portion is a notch that opens at an end portion in the longitudinal direction of the first clamping portion.

4. the first clamping unit and the second clamping unit are rotatable about a rotation axis, the notch is located on the opposite side of the first clamping portion from the rotation axis, The puncture assisting device according to claim 3 , wherein the skin stretching portion stretches the intended puncture site toward the notch and enters inside the notch as the second clamping portion rotates around the rotation axis.

5. The puncture assisting tool according to any one of claims 1 to 4, wherein the hardness of the portion of the skin stretching portion that comes into contact with the skin is A10 or more and A90 or less.

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