WO2015125859A1 - Deformed nail correction tool, and nail correction method - Google Patents

Deformed nail correction tool, and nail correction method Download PDF

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Publication number
WO2015125859A1
WO2015125859A1 PCT/JP2015/054598 JP2015054598W WO2015125859A1 WO 2015125859 A1 WO2015125859 A1 WO 2015125859A1 JP 2015054598 W JP2015054598 W JP 2015054598W WO 2015125859 A1 WO2015125859 A1 WO 2015125859A1
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nail
nail plate
wire
correction jig
plate
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PCT/JP2015/054598
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French (fr)
Japanese (ja)
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香 塩之谷
江藤　学
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香 塩之谷
江藤　学
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Priority to JP2016504156A priority Critical patent/JPWO2015125859A1/en
Publication of WO2015125859A1 publication Critical patent/WO2015125859A1/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
    • A61F5/01—Orthopaedic devices, e.g. splints, casts or braces
    • A61F5/11—Devices for correcting deformities of the nails

Definitions

  • the present invention relates to a nail correction jig for correcting deformed nails such as wound nails and ingrown nails.
  • Physiological correction to restore the deformed nail plate is effective for treating deformed nails.
  • a plate-shaped piece made of a shape memory alloy or a shape memory resin is adhered to the surface of the wound nail with an adhesive, and the environmental temperature is raised to a predetermined temperature or more, thereby causing the plate-shaped piece.
  • a method of repairing by the restoring force of the above has been proposed (Patent Document 1).
  • Patent Document 1 since operation, such as a heating, is required at the time of application, it is complicated.
  • Patent Document 2 As a wire-like material, a super elastic wire using a Ni—Ti alloy is known (Patent Document 2). However, since the superelastic wire made of the Ni—Ti alloy of Patent Document 2 has a high elastic modulus, the nail may be chipped. In addition, Ni—Ti alloy contains nickel and there is concern about allergic symptoms. Desorption is required when undergoing an MRI (magnetic resonance image) examination. Further, since Ni—Ti alloy has low rollability, it is not easy to process the cross section during use.
  • MRI magnetic resonance image
  • JP 08-215227 A JP 09-253111
  • An object of the present invention is to provide a nail correction jig capable of correcting deformed nails safely and with less pain in a short period of time and without inducing onset of intractable allergies.
  • a nail correction jig for correcting a deformed nail which is integrally formed of a polymer material, has elasticity, and has a needle shape at one end thereof.
  • the needle-like tip of the wire part is inserted from the back side of the nail plate to the front side of the hole of the nail plate, and moves until the locking part is locked to the back side of the nail plate along the nail bed.
  • the needle-like tip of the wire part is inserted from the front side of the nail plate to the back side with respect to the second hole formed at the other end in the width direction of the nail plate, and the middle part of the wire part is nail plate
  • the wire part exposed on the back side of the nail plate was bent along the back side of the nail plate. Nail correcting jig its dimensions to be mounted to cut Chi extra portion and elasticity, characterized in that it is optimized is provided.
  • the polymer material is a shape memory polymer.
  • it is preferable to have a Young's modulus of 30 to 75 GPa.
  • the wire portion preferably has a diameter of 0.35 to 0.4 mm.
  • the locking portion has the same thickness as the diameter of the wire portion. Moreover, it is preferable that the said latching
  • a nail correction method for correcting a deformed nail which is integrally formed of a polymer material, has elasticity, and has a wire-shaped portion formed with a needle-like tip at one end thereof.
  • nail correction method characterized by having a are provided.
  • two or more nail correctors are used.
  • FIG. 1 is a side view showing a nail correction jig according to an embodiment of the present invention.
  • FIG. 2 is also a plan view.
  • FIG. 3 is a cross-sectional view taken along line AA in FIG.
  • FIGS. 4A and 4B are side views showing an example in the case where the wire portion is used by being deformed.
  • FIG. 5 is a schematic diagram showing a deformed claw.
  • FIG. 6 is a schematic diagram for explaining a method of mounting the nail correction jig according to the present embodiment.
  • ⁇ Deformation nail correction jig ⁇ 1 to 3 are a side view, a plan view, and a cross-sectional view taken along a line AA in FIG. 1, respectively, showing a deformed nail correction jig 1 according to an embodiment of the present invention.
  • the nail correction jig 1 is formed by injection molding with a polymer material, has elasticity, has a wire portion 2 formed with a needle-like tip 2a at one end, and a flat shape formed at the other end of the wire portion 2. And a locking portion 3 having a shape.
  • the nail correction jig 1 is formed of a polymer material, preferably a shape memory polymer, such as a norbornene polymer, a trans polyisoprene polymer, a sterene-ptagen polymer, or a urethane polymer. More preferably, it is integrally injection-molded with a urethane-based polymer.
  • a shape memory polymer has a two-phase structure of a stationary phase for preventing the fluidity of a resin and a softening / curing reversible phase in which softening and curing reversibly occur with a change in temperature.
  • the melting temperature of the stationary phase (referred to as TF) is higher than the melting temperature of the reversible phase (referred to as TR).
  • TR melting temperature of the reversible phase
  • a shape memory polymer can be deformed into an arbitrary shape by heating to a temperature T (TR ⁇ T ⁇ TF) at which the stationary phase does not melt and only the reversible phase melts, and an external force is applied in this state (secondary shaping) ).
  • T a temperature at which the stationary phase does not melt and only the reversible phase melts
  • secondary shaping an external force is applied in this state
  • T a temperature at which only the reversible phase melts by heating
  • the polymer exhibits a rubbery characteristic and becomes a stable state, and the original shape (primary shaping shape) is obtained.
  • Shape memory polymers develop a shape memory / recovery phenomenon through such a process. The expression principle of such a shape memory / recovery phenomenon varies depending on the type (product) of the shape memory polymer.
  • the nail correction jig uses the shape fixability of the shape memory polymer to shape the wire portion into a predetermined shape (primary shaping or secondary shaping) and has a melting temperature TR equal to or lower than the reversible phase.
  • the nail is corrected by utilizing the property of recovering the original shape even when it is deformed in a rigid state at the temperature.
  • the shape In use, it may be used in a straight line as shown in FIG. 1, or has a curvature as shown in FIG. 4 (a) when heated to the melting temperature of the stationary phase or the melting temperature of the reversible phase.
  • the shape may be deformed into a special shape as shown in FIG. 4B, and the shape may be fixed by cooling to the reversible phase melting temperature or lower in this state.
  • the deformed nail correction jig 1 of the present invention since it is formed of a shape memory polymer material having a large deformation tolerance, the shape can be easily adjusted as appropriate according to the degree of deformation of the nail.
  • shape memory alloy is known as a material that exhibits a shape memory function. Shape memory polymers and shape memory alloys have the same name “shape memory” but differ in material properties. When the shape recovers, the “alloy” is hardened by heating, whereas the “polymer” is hard at low temperatures (glass state) and soft when heated (rubber state).
  • shape memory polymers When compared with shape memory alloys, the features of shape memory polymers are as follows.
  • a drawback of shape memory polymers is that the shape recovery force is only about one-tenth that of alloys, but nail correction is preferable for preventing nail damage.
  • it is possible to make different applications from shape memory alloys by taking advantage of its features, such as processing and coloring the wire portion into various shapes to make accessories and preventing allergies.
  • the wire portion 2 it is preferable to prepare the wire portion having various thicknesses and to have a thickness that can obtain the most desirable autonomous correction / reduction force according to the symptom.
  • the diameter of the wire portion 2 is not particularly limited, but is preferably about 0.35 to 0.4 mm.
  • the length of the correction jig 1 can be adjusted by cutting according to the size of the toenails, but is generally 30 mm to 40 mm in consideration of ease of work.
  • the shape of the locking portion 3 is preferably the same as the diameter of the wire portion 2 (about 0.35 to 0.4 mm). Since this locking part 3 stays on the back side of the nail, it is not preferable because it will press the skin if it is thick. Further, the width of the locking portion 3 (corresponding to the diameter in the case of a disk) is about 2 to 3 mm. (Curvature of needle-like member)
  • the wire portion 2 of the deformed nail correction jig 1 shown in the figure is linear, but as described above, the shape below the transformation temperature (primary shaping or secondary shaping) is formed into a desired shape. For example, as shown in FIGS. 4A and 4B, it may be a curved line (having a curvature) instead of a straight line.
  • the polymer material used for the deformed nail correction jig of this embodiment preferably has a Young's modulus of 30 to 75 GPa. More preferably, it is 35 to 65 GPa.
  • the Young's modulus is measured according to JIS Z 2280 (Young's modulus of metal material). Since the elasticity (Young's modulus) of the nail correction jig is lower than that of the shape memory alloy, no unnecessary pain is given to the patient.
  • (Mounting and fixing method) 5 and 6 are process diagrams showing how to use the nail correction jig.
  • the first and second holes 4a and 4b are formed at one end and the other end of the nail plate in the width direction.
  • tip 2a of the said wire rod part 2 is penetrated in the 1st hole 4a from the back side of the said nail plate
  • the needle-like tip 2a of the wire portion 2 is inserted from the front side of the nail plate back to the back side with respect to the second hole 4b formed at the other end in the width direction of the nail plate, and the middle portion of the wire portion 2 Is moved along the surface of the nail plate, and the portion of the wire portion 2 exposed on the back side of the nail plate is bent along the back side of the nail plate, and then the surplus portion is cut.
  • Two or more correction jigs 1 may be used at the same time.
  • Installation / correction time When the deformed nail correction jig of the present invention is used to correct deformed nails, the pain disappears in most cases with a single attachment. Although it depends on the severity, it is desirable to wear it for about a year to prevent recurrence. Compared to the case of using Ni-Ti alloy, it is less likely to damage adjacent flaws and can be treated aesthetically. Furthermore, it does not need to be removed when performing MRI, and does not cause symptoms such as allergies.
  • the present invention is not limited to the above-described embodiment, and various modifications can be made without changing the gist of the invention.

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  • Health & Medical Sciences (AREA)
  • Nursing (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Abstract

[Solution] A nail correction tool for correcting deformed nails, the nail correction tool being integrally formed by means of a polymer material, and being provided with an elastic wire rod part on which a needle-like tip is formed on one end, and a flat latching part which is formed on the other end of the wire rod part, wherein: the needle-like tip of the wire rod part is inserted into a first hole, which is formed on one end in the width direction of a nail plate, in the direction from the rear side to the front side of the nail plate, and the surface of the latching part is moved along a nail bed until the latching part latches onto the rear side of the nail plate; the needle-like tip of the wire rod part is inserted into a second hole, which is formed on the other end in the width direction of the nail plate, in the direction from the front side to the rear side of the nail plate and is moved until the middle part of the wire rod part reaches the surface of the nail plate; and the wire rod part that exposes from the rear side of the nail plate is bent along the rear side of the nail plate and the excessive portion of the wire rod part is cut. The shape, size, and elasticity of the present invention is optimized so that same can be attached as mentioned above.

Description

変形爪矯正用治具及び爪矯正方法Deformed nail correction jig and nail correction method
　本発明は巻き爪や陥入爪等の変形爪を矯正するための爪矯正用治具に関するものである。 The present invention relates to a nail correction jig for correcting deformed nails such as wound nails and ingrown nails.
　変形爪とは母趾に発生する巻き爪、陥入爪等をいう。変形爪は、重篤なものになると、爪甲の外側縁が皮膚に食い込み、炎症や化膿を起こす。この炎症や化膿により、周囲の軟部組織の発赤、腫脹、疼痛の悪循環を来たし、更に病的肉芽が形成され、浸出液、膿の排出もみられる。このため、変形爪に対しては、早期の治療が肝要である。 ”Deformed nails are wound nails, ingrown nails, etc. that occur on the mother's heel. When deformed nails become severe, the outer edges of the nail plate bite into the skin, causing inflammation and suppuration. This inflammation and suppuration caused a vicious cycle of redness, swelling, and pain in the surrounding soft tissues, and pathological granulation was formed, and exudate and pus were discharged. For this reason, early treatment is essential for deformed nails.
　変形爪の治療は、変形した爪甲をもとに戻すための物理的矯正が有効である。この矯正方法としては、例えば形状記憶合金又は形状記憶樹脂からなる板状片を巻き爪の表面に接着剤で貼着させておき、環境温度を所定の温度以上に上昇させることによって、板状片の復元力により直す方法等が提案されている（特許文献１）。しかしながら、特許文献１では適用時に加熱等の操作が必要なことから、煩雑である。 Physiological correction to restore the deformed nail plate is effective for treating deformed nails. As this correction method, for example, a plate-shaped piece made of a shape memory alloy or a shape memory resin is adhered to the surface of the wound nail with an adhesive, and the environmental temperature is raised to a predetermined temperature or more, thereby causing the plate-shaped piece. A method of repairing by the restoring force of the above has been proposed (Patent Document 1). However, in patent document 1, since operation, such as a heating, is required at the time of application, it is complicated.
　又、針金状の素材としては、Ｎｉ－Ｔｉ合金を用いる超弾性ワイヤが知られている（特許文献２）。しかしながら、特許文献２のＮｉ－Ｔｉ合金からなる超弾性ワイヤは高い弾性率を有するので、爪が欠けたりすることがある。又、Ｎｉ－Ｔｉ合金にはニッケルが含まれ、そのアレルギー症状に懸念がある。また、ＭＲＩ（磁気共鳴画像）検査を受ける際には脱着を求められる。更にＮｉ－Ｔｉ合金は圧延性が低いので、使用時に断面を加工するのが容易ではない。 As a wire-like material, a super elastic wire using a Ni—Ti alloy is known (Patent Document 2). However, since the superelastic wire made of the Ni—Ti alloy of Patent Document 2 has a high elastic modulus, the nail may be chipped. In addition, Ni—Ti alloy contains nickel and there is concern about allergic symptoms. Desorption is required when undergoing an MRI (magnetic resonance image) examination. Further, since Ni—Ti alloy has low rollability, it is not easy to process the cross section during use.
特開平０８－２１５２２７JP 08-215227 A 特開平０９－２５３１１１JP 09-253111
　以上のように、従来の矯正具によれば、簡便、安全かつ短期間で変形爪の治療をすることが必ずしも容易ではなかった。本発明の目的は、簡単な方法で短期間に、かつ難治性アレルギーの発症を誘発せず安全に疼痛を少なく変形爪を矯正することができる爪矯正用治具を提供することである。 As described above, according to conventional correction tools, it is not always easy to treat deformed nails simply, safely and in a short period of time. An object of the present invention is to provide a nail correction jig capable of correcting deformed nails safely and with less pain in a short period of time and without inducing onset of intractable allergies.
　上記目的を解決するため、本発明の第一の主要な観点によれば、変形爪を矯正する爪矯正用治具であって、ポリマー材料により一体成形され、弾性を有しその一端に針状先端が成形されてなる線材部とこの線材部の他端に成形された扁平形状の係止部とを備え、前記線材部および係止部が、爪甲の幅方向一端に形成された第１の孔に対し、上記線材部の前記針状先端を前記爪甲の裏側から表側方向に挿通させ、上記係止部がその表面を爪床に沿わせて爪甲の裏側に係止するまで移動させると共に、爪甲の幅方向他端に形成された第２の孔に対し、上記線材部の前記針状先端を前記爪甲の表側から裏側方向に挿通させ、線材部の中途部が爪甲の表面に沿うまで移動させると共に、爪甲の裏側に露出した線材部を爪甲の裏側に沿わせて折曲したのち余剰部分を切断するように装着されるべくその寸法及び弾性が最適化されていることを特徴とする爪矯正用治具が提供される。 In order to solve the above object, according to a first main aspect of the present invention, there is provided a nail correction jig for correcting a deformed nail, which is integrally formed of a polymer material, has elasticity, and has a needle shape at one end thereof. A wire rod portion formed at the tip and a flat locking portion formed at the other end of the wire rod portion, the wire rod portion and the locking portion being formed at one end in the width direction of the nail plate The needle-like tip of the wire part is inserted from the back side of the nail plate to the front side of the hole of the nail plate, and moves until the locking part is locked to the back side of the nail plate along the nail bed. In addition, the needle-like tip of the wire part is inserted from the front side of the nail plate to the back side with respect to the second hole formed at the other end in the width direction of the nail plate, and the middle part of the wire part is nail plate The wire part exposed on the back side of the nail plate was bent along the back side of the nail plate. Nail correcting jig its dimensions to be mounted to cut Chi extra portion and elasticity, characterized in that it is optimized is provided.
　この発明の一実施形態によれば、前記ポリマー材料は、形状記憶ポリマーである。この場合、３０～７５ＧＰａのヤング率を有するものであることが好ましい。また、前記線材部は、０．３５～０．４ｍｍの直径を有するものであることが好ましい。 According to one embodiment of the present invention, the polymer material is a shape memory polymer. In this case, it is preferable to have a Young's modulus of 30 to 75 GPa. The wire portion preferably has a diameter of 0.35 to 0.4 mm.
　この発明の他の一の実施形態によれば、前記係止部は、上記線材部の径と同じ厚さを有するものである。また、前記係止部は、上記線材部の径よりも大きい幅を有することが好ましい。その場合、前記係止部の幅は２～３ｍｍであることが望ましい。 According to another embodiment of the present invention, the locking portion has the same thickness as the diameter of the wire portion. Moreover, it is preferable that the said latching | locking part has a width | variety larger than the diameter of the said wire part. In that case, the width of the locking portion is preferably 2 to 3 mm.
　この発明の第２の主要な観点によれば、変形爪を矯正する爪矯正方法であって、ポリマー材料により一体成形され、弾性を有しその一端に針状先端が成形されてなる線材部とこの線材部の他端に成形された扁平形状の係止部とを備えた爪矯正具を用意する工程と、爪甲の幅方向一端に形成された第１の孔に対し、上記線材部の前記針状先端を前記爪甲の裏側から表側方向に挿通させ、上記係止部がその表面を爪床に沿わせて爪甲の裏側に係止するまで移動させる工程と、爪甲の幅方向他端に形成された第２の孔に対し、上記線材部の前記針状先端を前記爪甲の表側から裏側方向に挿通させ、線材部の中途部が爪甲の表面に沿うまで移動させる工程と、爪甲の裏側に露出した線材部を爪甲の裏側に沿わせて折曲したのち余剰部分を切断する工程と、を有することを特徴とする爪矯正方法が提供される。 According to a second main aspect of the present invention, there is provided a nail correction method for correcting a deformed nail, which is integrally formed of a polymer material, has elasticity, and has a wire-shaped portion formed with a needle-like tip at one end thereof. A step of preparing a nail correction tool provided with a flat-shaped locking portion formed at the other end of the wire portion, and a first hole formed at one end in the width direction of the nail plate, Inserting the needle-shaped tip from the back side of the nail plate in the front direction and moving the locking part along the nail bed until it is locked to the back side of the nail plate; and the width direction of the nail plate A step of inserting the needle-like tip of the wire portion from the front side of the nail plate to the back side with respect to the second hole formed at the other end and moving the middle portion of the wire portion along the surface of the nail plate. Then, bend the wire part exposed on the back side of the nail plate along the back side of the nail plate and then cut the excess part If, nail correction method characterized by having a are provided.
　この発明の一の実施形態によれば、前記爪矯正具を２本以上使用するものである。 According to one embodiment of the present invention, two or more nail correctors are used.
　この発明の特徴には、上記以外のものでも、以下の実施形態の記載及び図面から当業者によって理解されるものも含まれるものである。 The features of the present invention include those other than those described above and those understood by those skilled in the art from the description of the following embodiments and the drawings.
図１は、この発明の一実施形態に係る爪矯正用治具を示す側面図である。FIG. 1 is a side view showing a nail correction jig according to an embodiment of the present invention. 図２は、同じく平面図である。FIG. 2 is also a plan view. 図３は、図1中のＡ－Ａ線に沿う断面図である。FIG. 3 is a cross-sectional view taken along line AA in FIG. 図４（ａ）、（ｂ）は、線材部を変形させて使用する場合の例を示す側面図である。FIGS. 4A and 4B are side views showing an example in the case where the wire portion is used by being deformed. 図５は、変形爪を示す模式図である。FIG. 5 is a schematic diagram showing a deformed claw. 図６は、本実施形態に係る爪矯正用治具の装着方法を説明するための模式図である。FIG. 6 is a schematic diagram for explaining a method of mounting the nail correction jig according to the present embodiment.
　以下、添付した図面を参照して本発明の一実施形態を説明する。 Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.
　≪変形爪矯正用治具≫
　図１～３は、それぞれ、本発明の実施の一形態にかかる変形爪矯正用治具１を示す側面図、平面図、及び図１のＡ－Ａ断面に沿う断面図である。 ≪Deformation nail correction jig≫
1 to 3 are a side view, a plan view, and a cross-sectional view taken along a line AA in FIG. 1, respectively, showing a deformed nail correction jig 1 according to an embodiment of the present invention.
　この爪矯正用治具１は、ポリマー材料により射出一体成形され、弾性を有しその一端に針状先端２ａが成形されてなる線材部２と、この線材部２の他端に成形された扁平形状の係止部３とを備える。
（材質）
　上記爪矯正用治具１は、ポリマー材料、好ましくは、形状記憶ポリマー、例えば、ノルポルネン系ポリマー、トランスポリイソプレン系ポリマー、ステレンープタジェン系ポリマー、ウレタン系ポリマーで成形されている。また、さらに好ましくは、ウレタン系ポリマーで一体射出成形されている。 The nail correction jig 1 is formed by injection molding with a polymer material, has elasticity, has a wire portion 2 formed with a needle-like tip 2a at one end, and a flat shape formed at the other end of the wire portion 2. And a locking portion 3 having a shape.
(Material)
The nail correction jig 1 is formed of a polymer material, preferably a shape memory polymer, such as a norbornene polymer, a trans polyisoprene polymer, a sterene-ptagen polymer, or a urethane polymer. More preferably, it is integrally injection-molded with a urethane-based polymer.
　一般に、形状記憶ポリマーは、樹脂の流動性を防ぐための固定相と、温度変化に伴い軟化と硬化が可逆的におこる軟化/硬化可逆相の二相構造よりなる。固定相の溶融温度(ＴＦとする)は可逆相の溶融温度(ＴＲとする)よりも高く、可逆相・固定相ともに溶融する温度条件にすると、成形加工が可能となる。成形加工後に放冷すると固定相が固化して成形品の形状を保つようになり、さらに冷却すると可逆相も固化して完全にリジッドなものとなる。この状態の成形品形状が原型(１次賦形)として記憶される。 
　一般に、形状記憶ポリマーは、固定相は溶融せず可逆相のみが溶融する温度Ｔ(ＴＲ<Ｔ<ＴＦ)に加熱し、この状態で外力を加えると任意の形状に変形できる(２次賦形)。２次賦形した後に冷却するとその状態に保たれる。次に、２次賦形された成形品を加熱により可逆相のみが溶融する温度Ｔ以上に加熱すると、ポリマーは、ゴム状特性を示して安定状態となり、原形(１次賦形の形状)を回復する。形状記憶ポリマーはこのようなプロセスによって、形状記憶/回復現象を発現する。このような形状記憶/回復現象の発現原理は形状記憶ポリマーの種類(製品)によって異なる。 In general, a shape memory polymer has a two-phase structure of a stationary phase for preventing the fluidity of a resin and a softening / curing reversible phase in which softening and curing reversibly occur with a change in temperature. The melting temperature of the stationary phase (referred to as TF) is higher than the melting temperature of the reversible phase (referred to as TR). When allowed to cool after molding, the stationary phase solidifies and maintains the shape of the molded product, and when further cooled, the reversible phase also solidifies and becomes completely rigid. The shape of the molded product in this state is stored as a prototype (primary shaping).
In general, a shape memory polymer can be deformed into an arbitrary shape by heating to a temperature T (TR <T <TF) at which the stationary phase does not melt and only the reversible phase melts, and an external force is applied in this state (secondary shaping) ). When cooled after secondary shaping, it is kept in that state. Next, when the molded product subjected to secondary shaping is heated to a temperature T or higher at which only the reversible phase melts by heating, the polymer exhibits a rubbery characteristic and becomes a stable state, and the original shape (primary shaping shape) is obtained. Recover. Shape memory polymers develop a shape memory / recovery phenomenon through such a process. The expression principle of such a shape memory / recovery phenomenon varies depending on the type (product) of the shape memory polymer.
　この爪矯正用治具は、形状記憶ポリマーの形状固定性を利用して上記線材部を所定の形状（１次賦形若しくは２次賦形）に成形すると共に、上記可逆相の溶融温度ＴＲ以下の温度のリジッドな状態における変形を受けても元の形状を回復する性質を利用して爪の矯正を行うものである。 The nail correction jig uses the shape fixability of the shape memory polymer to shape the wire portion into a predetermined shape (primary shaping or secondary shaping) and has a melting temperature TR equal to or lower than the reversible phase. The nail is corrected by utilizing the property of recovering the original shape even when it is deformed in a rigid state at the temperature.
　なお、使用に際しては、図１に示すように直線状のまま使用しても良いし、固定相の溶融温度若しくは可逆相の溶融温度に加熱して図４（ａ）に示すような曲率を有する形状や、図４（ｂ）に示すような特殊形状に変形させこの状態で可逆相溶融温度以下に冷却して形状を固定するようにしても良い。この発明の変形爪矯正用治具１によれば、変形許容度が大きい形状記憶ポリマー材料により形成されているから、爪の変形度合に応じて適宜形状を調整することが容易に行える。 In use, it may be used in a straight line as shown in FIG. 1, or has a curvature as shown in FIG. 4 (a) when heated to the melting temperature of the stationary phase or the melting temperature of the reversible phase. The shape may be deformed into a special shape as shown in FIG. 4B, and the shape may be fixed by cooling to the reversible phase melting temperature or lower in this state. According to the deformed nail correction jig 1 of the present invention, since it is formed of a shape memory polymer material having a large deformation tolerance, the shape can be easily adjusted as appropriate according to the degree of deformation of the nail.
　なお、形状記憶機能を発現する材料としては、形状記憶ポリマーの他に「形状記憶合金」が知られている。形状記憶ポリマーと形状記憶合金とは「形状記憶」という名は同じであるが、材料特性は異なる。形状回復する際、「合金」は加熱により硬化するのに対して、「ポリマー」は低温で硬く(ガラス状態)、加熱すると軟らかくなる(ゴム状態)という点で、特性上の相違がある。 In addition to the shape memory polymer, “shape memory alloy” is known as a material that exhibits a shape memory function. Shape memory polymers and shape memory alloys have the same name “shape memory” but differ in material properties. When the shape recovers, the “alloy” is hardened by heating, whereas the “polymer” is hard at low temperatures (glass state) and soft when heated (rubber state).
　形状記憶合金と比較した場合、形状記憶ポリマーの特徴として、下記の事項がある。形状記憶ポリマーの欠点として、形状回復力が合金の１０分の１程度しかないことが挙げられるが、爪矯正の場合には爪の破損を防止するためには好ましい。また、線材部を様々な形状に加工・着色してアクセサリ化できる、アレルギーを防止できる、など、その特徴を生かして形状記憶合金とは異なる応用をすることが可能である。 When compared with shape memory alloys, the features of shape memory polymers are as follows. A drawback of shape memory polymers is that the shape recovery force is only about one-tenth that of alloys, but nail correction is preferable for preventing nail damage. In addition, it is possible to make different applications from shape memory alloys by taking advantage of its features, such as processing and coloring the wire portion into various shapes to make accessories and preventing allergies.
　（１）複雑形状に加工できる
　（２）形状回復率が大きい (合金は最大７％に対し、ポリマーでは４００～５００％）
　（３）軽量である(合金の１０分の１程度)
　（４）着色できる
　（５）低価格である(合金の１０分の１程度)
（形状：針状部材の長さと太さ、断面形状）
　線材部２としては、太さが種々のものを準備しておき、症状にあわせて最も望ましい自律的な矯正整復力が得られる太さのものを用いることが好ましい。例えば、線材部２の径は、特に限定されないが、０．３５～０．４ｍｍ程度であることが好ましい。本矯正用治具１の長さは、足爪のサイズに応じて切断することによって調整することができるが、概ね、作業のしやすさを考慮して３０ｍｍ～４０ｍｍである。 (1) Can be processed into complex shapes (2) Large shape recovery rate (up to 7% for alloys, 400 to 500% for polymers)
(3) Light weight (about 1/10 of the alloy)
(4) Can be colored (5) Low cost (about 1/10 of the alloy)
(Shape: length and thickness of needle-like member, cross-sectional shape)
As the wire portion 2, it is preferable to prepare the wire portion having various thicknesses and to have a thickness that can obtain the most desirable autonomous correction / reduction force according to the symptom. For example, the diameter of the wire portion 2 is not particularly limited, but is preferably about 0.35 to 0.4 mm. The length of the correction jig 1 can be adjusted by cutting according to the size of the toenails, but is generally 30 mm to 40 mm in consideration of ease of work.
　上記係止部３の形状は、厚さが上記線材部２の径と同じ（０．３５～０．４ｍｍ程度）であることが好ましい。この係止部３は、爪の裏側にとどまるので、厚くては皮膚を圧迫することになるため、好ましくない。
　また、係止部３の幅（円盤状の場合には直径に該当）は２～３ｍｍ程度である。
（針状部材の曲率）
　図に示した変形爪矯正用治具１の線材部２は直線状であるが、前述したように変態温度以下の形状（１次賦形若しくは２次賦形）は所望の形状に形成されていることが好ましく、例えば図４（ａ）、（ｂ）に示すように、直線状ではなく曲線状であっても（曲率を有していても）よい。
（弾性率）
　この実施形態の変形爪矯正用治具に用いられるポリマー材料は、好ましくは３０～７５ＧＰａのヤング率を有する。より好ましくは３５～６５ＧＰａである。ヤング率は、ＪＩＳ Ｚ ２２８０（金属材料のヤング率）に従って測定したものである。この爪矯正用治具の弾性（ヤング率）は形状記憶合金のそれよりも低くいので、患者に無用の痛みを与えることがない。
（装着固定方法）
　図５、図６は、この爪矯正用治具の使用方法を示した工程図である。 The shape of the locking portion 3 is preferably the same as the diameter of the wire portion 2 (about 0.35 to 0.4 mm). Since this locking part 3 stays on the back side of the nail, it is not preferable because it will press the skin if it is thick.
Further, the width of the locking portion 3 (corresponding to the diameter in the case of a disk) is about 2 to 3 mm.
(Curvature of needle-like member)
The wire portion 2 of the deformed nail correction jig 1 shown in the figure is linear, but as described above, the shape below the transformation temperature (primary shaping or secondary shaping) is formed into a desired shape. For example, as shown in FIGS. 4A and 4B, it may be a curved line (having a curvature) instead of a straight line.
(Elastic modulus)
The polymer material used for the deformed nail correction jig of this embodiment preferably has a Young's modulus of 30 to 75 GPa. More preferably, it is 35 to 65 GPa. The Young's modulus is measured according to JIS Z 2280 (Young's modulus of metal material). Since the elasticity (Young's modulus) of the nail correction jig is lower than that of the shape memory alloy, no unnecessary pain is given to the patient.
(Mounting and fixing method)
5 and 6 are process diagrams showing how to use the nail correction jig.
　この爪矯正用治具１の装着は、まず、爪甲の幅方向一端及び他端に第１、第２の孔４ａ、４ｂを形成する。そして、第１の孔４ａに対し、上記線材部２の前記針状先端２ａを前記爪甲の裏側から表側方向に挿通させ、上記係止部３がその表面を爪甲の裏側に沿わせてそこに係止するまで移動させる。ついで、爪甲の幅方向他端に形成された第２の孔４ｂに対し、上記線材部２の前記針状先端２ａを前記爪甲の表側から裏側方向に挿通させ、線材部２の中途部が爪甲の表面に沿うまで移動させると共に、爪甲の裏側に露出した線材部２の部分を爪甲の裏側に沿わせて折曲したのち余剰部分を切断するものである。 First, the first and second holes 4a and 4b are formed at one end and the other end of the nail plate in the width direction. And the said needle-like front-end | tip 2a of the said wire rod part 2 is penetrated in the 1st hole 4a from the back side of the said nail plate | board to the front side direction, and the said latching | locking part 3 has the surface along the back side of a nail plate | board. Move until locked. Next, the needle-like tip 2a of the wire portion 2 is inserted from the front side of the nail plate back to the back side with respect to the second hole 4b formed at the other end in the width direction of the nail plate, and the middle portion of the wire portion 2 Is moved along the surface of the nail plate, and the portion of the wire portion 2 exposed on the back side of the nail plate is bent along the back side of the nail plate, and then the surplus portion is cut.
　また、この矯正用治具１は、同時に２本以上用いてもよい。
（装着・矯正時間）
本発明の変形爪矯正用治具は変形爪の矯正にあたり、1度の装着で疼痛はほとんどの症例で消失する。重症度にもよるが、再発を防ぐためには1年ほど装着を行うことが望ましい。Ni-Ti合金を用いた場合に比して、隣接趾を傷つけることも少なく、美的に治療することができる。さらには、MRI撮影を行う際にはずす必要もなく、アレルギーなどの症状を起こすこともない。 Two or more correction jigs 1 may be used at the same time.
(Installation / correction time)
When the deformed nail correction jig of the present invention is used to correct deformed nails, the pain disappears in most cases with a single attachment. Although it depends on the severity, it is desirable to wear it for about a year to prevent recurrence. Compared to the case of using Ni-Ti alloy, it is less likely to damage adjacent flaws and can be treated aesthetically. Furthermore, it does not need to be removed when performing MRI, and does not cause symptoms such as allergies.
　なお、この発明は上記一実施形態に限定されるものではなく、発明の要旨を変更しない範囲で種々変形可能である。 The present invention is not limited to the above-described embodiment, and various modifications can be made without changing the gist of the invention.
　１…変形爪矯正用治具
　２ａ…針状先端
　２…線材部
　３…係止部
　４ａ…第１の孔
　４ｂ…第２の孔 DESCRIPTION OF SYMBOLS 1 ... Deformation nail correction jig 2a ... Needle-shaped tip 2 ... Wire part 3 ... Locking part 4a ... 1st hole 4b ... 2nd hole

Claims (9)

  1. 　変形爪を矯正する爪矯正用治具であって、
    　ポリマー材料により一体成形され、弾性を有しその一端に針状先端が成形されてなる線材部とこの線材部の他端に成形された扁平形状の係止部と
    　を備え、
    　前記線材部および係止部が、
    　　爪甲の幅方向一端に形成された第１の孔に対し、上記線材部の前記針状先端を前記爪甲の裏側から表側方向に挿通させ、上記係止部がその表面を爪床に沿わせて爪甲の裏側に係止するまで移動させると共に、爪甲の幅方向他端に形成された第２の孔に対し、上記線材部の前記針状先端を前記爪甲の表側から裏側方向に挿通させ、線材部の中途部が爪甲の表面に沿うまで移動させると共に、爪甲の裏側に露出した線材部を爪甲の裏側に沿わせて折曲したのち余剰部分を切断するように装着されるべくその寸法及び弾性が最適化されている
    　ことを特徴とする爪矯正用治具。     A nail correction jig for correcting deformed nails,
    A wire part formed integrally with a polymer material, having elasticity and having a needle-like tip formed at one end thereof, and a flat locking part formed at the other end of the wire part,
    The wire portion and the locking portion are
    With respect to the first hole formed at one end in the width direction of the nail plate, the needle-like tip of the wire portion is inserted from the back side of the nail plate to the front side, and the locking portion has its surface along the nail bed. And move the needle-like tip of the wire portion from the front side of the nail plate to the back side with respect to the second hole formed at the other end in the width direction of the nail plate. So that the middle part of the wire part is moved along the surface of the nail plate, and the wire part exposed on the back side of the nail plate is bent along the back side of the nail plate and then the excess part is cut. Nail correction jig characterized in that its size and elasticity are optimized to be mounted.
  2. 　請求項１記載の爪矯正用治具において、
    　前記ポリマー材料は、形状記憶ポリマーである
    　ことを特徴とする爪矯正用治具。     The nail correction jig according to claim 1,
    The nail correction jig, wherein the polymer material is a shape memory polymer.
  3. 　請求項１記載の爪矯正用治具において、
    　前記線材部は、３０～７５ＧＰａのヤング率を有するものである
    　ことを特徴とする爪矯正用治具。     The nail correction jig according to claim 1,
    The nail correction jig, wherein the wire portion has a Young's modulus of 30 to 75 GPa.
  4. 　請求項１記載の爪矯正用治具において、
    　前記線材部は、０．３５～０．４ｍｍの直径を有するものである
    　ことを特徴とする爪矯正用治具。     The nail correction jig according to claim 1,
    The nail correction jig, wherein the wire portion has a diameter of 0.35 to 0.4 mm.
  5. 　請求項１記載の爪矯正用治具において、
    　前記係止部は、上記線材部の径と同じ厚さを有するものである
    　ことを特徴とする爪矯正用治具。     The nail correction jig according to claim 1,
    The nail correction jig, wherein the locking portion has the same thickness as the diameter of the wire portion.
  6. 　請求項１記載の爪矯正用治具において、
    　前記係止部は、上記線材部の径よりも大きい幅を有するものである
    　ことを特徴とする爪矯正用治具。     The nail correction jig according to claim 1,
    The said nail | claw part has a width | variety larger than the diameter of the said wire part, The nail correction jig | tool characterized by the above-mentioned.
  7. 　請求項１記載の爪矯正用治具において、
    　前記係止部の幅は２～３ｍｍである
    　ことを特徴とする爪矯正用治具。     The nail correction jig according to claim 1,
    The nail correction jig, wherein the width of the locking portion is 2 to 3 mm.
  8. 　変形爪を矯正する爪矯正方法であって、
    　ポリマー材料により一体成形され、弾性を有しその一端に針状先端が成形されてなる線材部とこの線材部の他端に成形された扁平形状の係止部とを備えた爪矯正具を用意する工程と、
    　爪甲の幅方向一端に形成された第１の孔に対し、上記線材部の前記針状先端を前記爪甲の裏側から表側方向に挿通させ、上記係止部がその表面を爪床に沿わせて爪甲の裏側に係止するまで移動させる工程と、
    　爪甲の幅方向他端に形成された第２の孔に対し、上記線材部の前記針状先端を前記爪甲の表側から裏側方向に挿通させ、線材部の中途部が爪甲の表面に沿うまで移動させる工程と、
    　爪甲の裏側に露出した線材部を爪甲の裏側に沿わせて折曲したのち余剰部分を切断する工程と、
    　を有することを特徴とする爪矯正方法。     A nail correction method for correcting deformed nails,
    A nail corrector is provided, which is made of a polymer material and has an elastic wire part with a needle-like tip formed at one end and a flat locking part formed at the other end of the wire part. And a process of
    With respect to the first hole formed at one end in the width direction of the nail plate, the needle-like tip of the wire portion is inserted from the back side of the nail plate to the front side, and the locking portion has its surface along the nail bed. And moving it until it is locked to the back of the nail plate,
    With respect to the second hole formed at the other end in the width direction of the nail plate, the needle-like tip of the wire portion is inserted from the front side to the back side of the nail plate, so that the middle portion of the wire portion is on the surface of the nail plate A process of moving it along,
    Cutting the excess portion after bending the wire portion exposed on the back side of the nail plate along the back side of the nail plate; and
    A nail correction method comprising:
  9. 　請求項８記載の爪矯正方法において、
    　前記爪矯正治具を２本以上使用するものであることを特徴とする爪矯正方法。     The nail correction method according to claim 8,
    2. A nail correction method, wherein two or more nail correction jigs are used.
PCT/JP2015/054598 2014-02-19 2015-02-19 Deformed nail correction tool, and nail correction method WO2015125859A1 (en)

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Cited By (1)

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WO2016158825A1 (en) * 2015-03-31 2016-10-06 旭化成株式会社 Polyimide film, polyimide varnish, product using polyimide film, and laminate

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Publication number Priority date Publication date Assignee Title
JPH08215227A (en) * 1995-02-08 1996-08-27 Hidekazu Machida Invaginated nail correcting tool
JP2010220986A (en) * 2009-03-19 2010-10-07 Junichi Otani Ingrown nail preventing implement 2
JP2012170510A (en) * 2011-02-17 2012-09-10 Kikuzo Okada Deformed nail corrector

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08215227A (en) * 1995-02-08 1996-08-27 Hidekazu Machida Invaginated nail correcting tool
JP2010220986A (en) * 2009-03-19 2010-10-07 Junichi Otani Ingrown nail preventing implement 2
JP2012170510A (en) * 2011-02-17 2012-09-10 Kikuzo Okada Deformed nail corrector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016158825A1 (en) * 2015-03-31 2016-10-06 旭化成株式会社 Polyimide film, polyimide varnish, product using polyimide film, and laminate
US11078378B2 (en) 2015-03-31 2021-08-03 Asahi Kasei Kabushiki Kaisha Polyimide film, polyimide varnish, and product and layered product using the polyimide film

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