JP2003112380A - Shape-memory polymer moldable at low temperature and its structural body - Google Patents
Shape-memory polymer moldable at low temperature and its structural bodyInfo
- Publication number
- JP2003112380A JP2003112380A JP2001345401A JP2001345401A JP2003112380A JP 2003112380 A JP2003112380 A JP 2003112380A JP 2001345401 A JP2001345401 A JP 2001345401A JP 2001345401 A JP2001345401 A JP 2001345401A JP 2003112380 A JP2003112380 A JP 2003112380A
- Authority
- JP
- Japan
- Prior art keywords
- shape
- memory polymer
- low temperature
- structural body
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Orthopedics, Nursing, And Contraception (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【0001】[0001]
【発明が属する技術分野】本発明はリハビリテーション
び矯正用途で使用される低温で型取り可能な形状記憶性
ポリマーとその構造体である。またその構造体は剛性層
と発泡層とから構成される。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a low temperature moldable shape memory polymer and its structure for use in rehabilitation and straightening applications. The structure is composed of a rigid layer and a foam layer.
【0002】[0002]
【従来の技術】整形外科及びリハビリテーションにおい
て、受傷した骨格、靭帯や筋肉などを固定或いは支える
ために一般に使用する商品としては、固定ベルト、包
帯、固定架など数多くあるが、これらの商品は長期に渡
って使用しても皮膚に悪影響が発生せず、又完成した後
でも、局部的に調節が出来、軽く、毒性がない物が要求
されている。この特性に更に要求される事は、製品成形
をする時、迅速に成形でき、高い熱エネルギーの発生を
避け、使用期間中に簡単に着脱でき、また防水性やX線
照射にも耐え、耐磨耗性,耐衝撃性、リサイクル性など
の特性が要求される。2. Description of the Related Art In orthopedics and rehabilitation, there are many fixed belts, bandages, fixed racks and the like which are generally used for fixing or supporting a damaged skeleton, ligament, muscle, etc. There is a demand for a material that does not cause adverse effects on the skin even if it is used over a long period of time, and can be locally adjusted even after completion, is light, and has no toxicity. What is further required for this property is that when molding products, it can be molded quickly, avoids the generation of high thermal energy, can be easily attached and detached during the period of use, and can withstand waterproofing and X-ray irradiation. Characteristics such as wear resistance, impact resistance, and recyclability are required.
【0003】現在使用している材質は,弾性繊維にポリ
マーなどを塗布したり,或いは選ばれた材料を直接に成
形して作った物が多いので上記の特性を全て満足するの
は困難である。そのため、新しい材質の発明は要望され
ている。Since many of the materials currently used are made by coating a polymer or the like on elastic fibers or directly molding a selected material, it is difficult to satisfy all the above characteristics. . Therefore, the invention of a new material is desired.
【0004】[0004]
【発明が解決しようとする課題】本発明の目的は、上記
要求を満たす、リハビリや矯正などに使用する低温で型
取り可能な形状記憶性ポリマーとその構造体を提供する
ことにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a shape memory polymer which can be molded at a low temperature and a structure thereof, which is used for rehabilitation or correction and which satisfies the above requirements.
【0005】[0005]
【課題を解決するための手段】本発明者らは、上記目的
を達成するために鋭意研究を重ねた結果、以下のポリマ
ー及び構造体を用いる事により、上記目的が容易に達成
できることを見出し、本発明に達成したものである。即
ち本発明は、人体の骨格或いは筋肉などを固定または支
えるために使用する形状記憶ポリマーおよびその構造体
に関するものである。Means for Solving the Problems As a result of intensive studies to achieve the above object, the present inventors have found that the above objects can be easily achieved by using the following polymers and structures, The present invention has been achieved. That is, the present invention relates to a shape memory polymer used for fixing or supporting a skeleton or muscle of a human body and a structure thereof.
【0006】その構造体は、80℃以下で軟化し、40
℃以下になると再び硬化しその温度低いほど硬化スピー
ドが早くなる。そのため軟化段階で患部と密着させて、
求める特定な形やサイズに成形することができる・本発
明の形状記憶性ポリマー構造体中の剛性層及び発泡層は
熱可塑性ポリマーで、同種或いは異種物質の組合せによ
り得られる。但し、発泡層は発泡剤による改質が必要
で、その時使用する発泡剤は一般的なものが使用され
る。The structure softens below 80 ° C.
When the temperature falls below ℃, it cures again, and the lower the temperature, the faster the curing speed. Therefore, in the softening stage, it should be brought into close contact with the affected area,
It can be molded into a desired specific shape or size. The rigid layer and the foamed layer in the shape-memory polymer structure of the present invention are thermoplastic polymers and can be obtained by the same kind or a combination of different materials. However, the foaming layer needs to be modified with a foaming agent, and a general foaming agent used at that time is used.
【0007】剛性層は、ヘキサラクトン、ポリウレタ
ン、ポリエン類及び架橋ポリエチレンなどの形状記憶高
分子から組合せられる。例えば、熱可塑性ヘキサラクト
ン類には、ポリ及びε−ヘキサラクトンが挙げられる。
その平均分子量は5,000〜100,000で、好ま
しくは30,000である。ポリウレタンとしては、硬
度の要求に応じてエステル系とエーテル系の2種類が使
用される。その他、ポリエン類としては、トランス−ポ
リイソプレンなどが使用される。The rigid layer is combined from shape memory polymers such as hexalactone, polyurethanes, polyenes and crosslinked polyethylene. For example, thermoplastic hexalactones include poly and ε-hexalactone.
Its average molecular weight is 5,000 to 100,000, preferably 30,000. As the polyurethane, two types of ester type and ether type are used according to hardness requirements. In addition, as the polyene, trans-polyisoprene or the like is used.
【0008】発泡層は、ポリエン類と適当な発泡剤によ
り生成された、生物体に馴染む発泡体であってその発泡
層の比重は0.05〜1.0である。好ましくはポリエ
ン類としてはトランスポリイソプレン、発泡剤として
は、スチレン−イソプレン−スチレンの共重合体が使用
される。 ポリエン類の含有量は20〜80%(wt
%)、発泡剤の含有量は80〜20%(wt%)であ
る。The foam layer is a foam which is made of polyenes and a suitable foaming agent and is compatible with living organisms, and the specific gravity of the foam layer is 0.05 to 1.0. Preferably, transpolyisoprene is used as the polyene and a styrene-isoprene-styrene copolymer is used as the blowing agent. The content of polyenes is 20-80% (wt
%), And the content of the foaming agent is 80 to 20% (wt%).
【0009】剛性層と発泡層は、定法によって接合され
る。例えば、塗布接合法、圧着法、注入法などが利用で
き、製品形態は、板状と筒状に分けられる。The rigid layer and the foam layer are joined by a conventional method. For example, a coating joining method, a pressure bonding method, an injection method, or the like can be used, and the product form is divided into a plate shape and a cylinder shape.
【0010】本発明の、発泡層は皮膚と接触するため、
特殊な処理即ち、抗菌、吸水、パンチングする事により
通気性の表面が形成され、長時間の使用が可能となっ
た。Since the foam layer of the present invention comes into contact with the skin,
A special treatment, that is, antibacterial, water absorption, and punching, formed a breathable surface and enabled long-term use.
【0011】[0011]
【発明の効果】本発明の形状記憶性ポリマー構造体の特
長は、低温で型取り出来ることである。この構造体は各
層の設計により軟化温度は20〜80℃、硬度は、AS
TMD2240 C類 測定値 27である。The feature of the shape-memory polymer structure of the present invention is that it can be molded at a low temperature. This structure has a softening temperature of 20 to 80 ° C. and a hardness of AS depending on the design of each layer.
TMD2240 Class C measurement value 27.
【0012】型取りの方法としては、必要なサイズのポ
リマー構造体を60〜70℃のお湯又は、その他の熱源
中に2〜5分間処理して軟化させた後、熱源から取り出
し、発泡体表面を直接必要な患部に密着させ型取りを行
う。温度が下がれば、必要な形が形成できる。もし必要
があれば、水、空気およびその他の冷却法により、スピ
ードをコントロールすることができる。As a method of patterning, the polymer structure of the required size is treated in hot water of 60 to 70 ° C. or another heat source for 2 to 5 minutes to soften it, and then taken out from the heat source to obtain the foam surface. Make a mold by directly adhering to the required affected area. If the temperature drops, the required shape can be formed. If necessary, speed can be controlled with water, air and other cooling methods.
【0013】本発明品はX線を透過するため、他の材料
に比べると、少量のX線照射で行える。 本発明の構造
体は軽く、硬度や、耐磨耗性に優れている。他の特性と
しては、生体に馴染みが良く、長時間使用することがで
き、また、患者はリハビリ途中での局部的な修正が簡単
に行えるという長所がある。Since the product of the present invention transmits X-rays, it can be performed with a smaller amount of X-ray irradiation than other materials. The structure of the present invention is light, and has excellent hardness and abrasion resistance. Other characteristics are that it is familiar to the living body, can be used for a long time, and that the patient can easily make local corrections during rehabilitation.
フロントページの続き Fターム(参考) 4C098 AA02 BB16 BC01 BC50 DD23 DD25 4F100 AK04A AK28A AK41A AK51A BA02 BA07 CA01B CA02A DJ01B GB66 JK01A JL00 YY00A YY00B Continued front page F term (reference) 4C098 AA02 BB16 BC01 BC50 DD23 DD25 4F100 AK04A AK28A AK41A AK51A BA02 BA07 CA01B CA02A DJ01B GB66 JK01A JL00 YY00A YY00B
Claims (2)
構造体において、構造体は剛性層と発泡層の2層より接
合され、剛性層はヘキサラクトン、ポリエン類、ポリウ
レタン及び架橋ポリエチレンから選ばれた物であり、発
泡層は20〜80%(wt%)のポリエン類と、80〜
20%(wt%)の発泡剤を含み、比重は0.1〜0.
5である。発泡層と剛性層の厚みの比は0.1〜1.0
である。1. A shape memory polymer and structure which can be molded at low temperature, wherein the structure is composed of two layers, a rigid layer and a foam layer, and the rigid layer is selected from hexalactone, polyenes, polyurethane and crosslinked polyethylene. The foam layer contains 20 to 80% (wt%) of polyenes and 80 to 80%.
It contains 20% (wt%) of a foaming agent and has a specific gravity of 0.1 to 0.
It is 5. The thickness ratio of the foam layer and the rigid layer is 0.1 to 1.0.
Is.
は、トランス−ポリイソプレンを主成分とする、熱可塑
性ポリマーである。2. The structure composition according to claim 1, wherein the polyenes are thermoplastic polymers containing trans-polyisoprene as a main component.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001345401A JP2003112380A (en) | 2001-10-05 | 2001-10-05 | Shape-memory polymer moldable at low temperature and its structural body |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001345401A JP2003112380A (en) | 2001-10-05 | 2001-10-05 | Shape-memory polymer moldable at low temperature and its structural body |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2003112380A true JP2003112380A (en) | 2003-04-15 |
Family
ID=19158740
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2001345401A Pending JP2003112380A (en) | 2001-10-05 | 2001-10-05 | Shape-memory polymer moldable at low temperature and its structural body |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2003112380A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012506938A (en) * | 2008-10-31 | 2012-03-22 | ヘルムホルツ−ツェントルム ゲーストハッハト ツェントルム フューア マテリアル−ウント キュンステンフォルシュング ゲーエムベーハー | Article having at least one thermally programmable switching segment for use in contact with a material having a high heat transfer coefficient |
JP2014200653A (en) * | 2013-04-07 | 2014-10-27 | 幸平 秋元 | Mounting fixture of walking assist device |
WO2019033912A1 (en) * | 2017-08-18 | 2019-02-21 | 北京化工大学 | Flexible-rigid integrated composite material having shape memory function, preparation method therefor and use thereof |
CN111234116A (en) * | 2019-12-25 | 2020-06-05 | 青岛科技大学 | Preparation method of trans-polyisoprene-maleic anhydride copolymer and thermoplastic high-strength water-absorbing rubber |
-
2001
- 2001-10-05 JP JP2001345401A patent/JP2003112380A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012506938A (en) * | 2008-10-31 | 2012-03-22 | ヘルムホルツ−ツェントルム ゲーストハッハト ツェントルム フューア マテリアル−ウント キュンステンフォルシュング ゲーエムベーハー | Article having at least one thermally programmable switching segment for use in contact with a material having a high heat transfer coefficient |
JP2014200653A (en) * | 2013-04-07 | 2014-10-27 | 幸平 秋元 | Mounting fixture of walking assist device |
WO2019033912A1 (en) * | 2017-08-18 | 2019-02-21 | 北京化工大学 | Flexible-rigid integrated composite material having shape memory function, preparation method therefor and use thereof |
CN111234116A (en) * | 2019-12-25 | 2020-06-05 | 青岛科技大学 | Preparation method of trans-polyisoprene-maleic anhydride copolymer and thermoplastic high-strength water-absorbing rubber |
CN111234116B (en) * | 2019-12-25 | 2023-04-21 | 青岛科技大学 | Preparation method of trans-polyisoprene-maleic anhydride copolymer and thermoplastic high-strength water-absorbing rubber |
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