JPH06197948A - Artificial prosthesis - Google Patents

Artificial prosthesis

Info

Publication number
JPH06197948A
JPH06197948A JP5000178A JP17893A JPH06197948A JP H06197948 A JPH06197948 A JP H06197948A JP 5000178 A JP5000178 A JP 5000178A JP 17893 A JP17893 A JP 17893A JP H06197948 A JPH06197948 A JP H06197948A
Authority
JP
Japan
Prior art keywords
prosthesis
fabric
filament
artificial
olefin
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
Application number
JP5000178A
Other languages
Japanese (ja)
Inventor
Hiroshi Nagai
博史 永井
Hiroki Oharai
裕樹 小原井
Makoto Takahashi
誠 高橋
Yuzo Ezaki
祐造 江崎
Yoshihito Takano
良仁 高野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Terumo Corp
Original Assignee
Terumo Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Terumo Corp filed Critical Terumo Corp
Priority to JP5000178A priority Critical patent/JPH06197948A/en
Publication of JPH06197948A publication Critical patent/JPH06197948A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To obtain a prosthesis which is elastic and with stands embedding in vivo for a long time by making it up of knit fabric, woven fabric, a braided matter, nonwoven fabric comprising an olefin elastomer filament or a composite thereof. CONSTITUTION:A structural body comprising a filament indicates knit fabric, woven fabric, a braided matter, nonwoven fabric or the like and plain fabrics, knit goods or the like are available. The diameter of the filament is preferably in a range of 0.005mmphi-1mmphi. The body is not specifically limited only if the material thereof is a biologically stable olefin elastomer and is, for example, a composite material comprising olefin rubber such as ethylene propylene rubber or isoprene isobutylene rubber, polypropylene or polyethylene. The structural body is made of the material of such a type to acquire softness, stability in vivo and tissue infiltration property. A prosthesis thus obtained is effective with no deterioration even in embedding for a long time without causing inflammation, hypertrophy and the like at a part to be implanted.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、人工血管、人工気管等
に使用される生体用補綴物に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bioprosthesis used for artificial blood vessels, artificial trachea and the like.

【0002】[0002]

【従来の技術】人工血管、人工気管等の長期埋入用補綴
物は、現在さまざまな材料が用いられているが、その多
くは弾性を有さない材料を用いているため、移植部位に
おいて生体側と補綴物とのコンプライアンスミスマッチ
による炎症、肥厚などが見られる等の問題があった。こ
のため柔軟性を有する材料として、ウレタン等の材料が
検討されてきたが、これらの材料は生体内に埋入される
と経時的に分解をおこし、物性が低下してしまうために
長期の埋殖用の材料として用いることはできなかった。
2. Description of the Related Art Prostheses for long-term implantation such as artificial blood vessels and artificial trachea currently use various materials, but most of them do not have elasticity, so they are used at the implantation site. There were problems such as inflammation and thickening due to compliance mismatch between the side and the prosthesis. For this reason, materials such as urethane have been studied as flexible materials, but these materials decompose over time when implanted in the living body, and their physical properties deteriorate, so long-term implantation is not possible. It could not be used as a material for breeding.

【0003】また、生体内に埋入した補綴物が、長期に
わたり生体適合性を保つためには、材料内に組織が侵入
し速やかに器質化される方が好ましい。このため、ポリ
テトラフルオロエチレンの多孔体、ポリエチレンテレフ
タレートの編織物など、連通した孔を有し組織の侵入を
容易にする補綴物が用いられているが、いずれも柔軟性
に問題がある。このように、柔軟性、生体内安定性を有
し、組織侵入性を持つ材料からなる補綴物が切望されて
いた。
In order to maintain the biocompatibility of the prosthesis implanted in the living body for a long period of time, it is preferable that the tissue penetrates into the material and is quickly organized. For this reason, a prosthesis such as a porous material of polytetrafluoroethylene or a knitted fabric of polyethylene terephthalate, which has communicating holes and facilitates the invasion of tissues, is used, but there is a problem in flexibility. As described above, a prosthesis made of a material having flexibility, in-vivo stability, and tissue invasion has been earnestly desired.

【0004】[0004]

【発明が解決しようとする課題】本発明は、弾性を持
ち、かつ長期の生体内埋入に耐え得る補綴物を提供する
ことを目的とする。
SUMMARY OF THE INVENTION It is an object of the present invention to provide a prosthesis having elasticity and capable of withstanding long-term implantation in a living body.

【0005】[0005]

【問題を解決のための手段】本発明者らは鋭意研究を行
った結果、以下の本発明により問題が解決できることを
見いだした。本発明は、実質的な本体がオレフィン系エ
ラストマーフィラメントの構造体(編物、織物、組物、
不織布など)からなる人工補綴物である。また、本発明
は上記オレフィン系エラストマーが、エチレンもしくは
プロピレンとαオレフィンとの共重合体である人工補綴
物である。また、本発明は、上記人工補綴物を用いた人
工気管、人工血管、人工靭帯、ブラットアクセス用グラ
フトである。
[Means for Solving the Problem] As a result of intensive studies, the present inventors have found that the following invention can solve the problem. The present invention, the substantial body is a structure of olefinic elastomer filaments (knit, woven, braided,
It is an artificial prosthesis made of non-woven fabric. The present invention is also an artificial prosthesis in which the olefin elastomer is a copolymer of ethylene or propylene and an α-olefin. The present invention also provides an artificial trachea, an artificial blood vessel, an artificial ligament, and a brat access graft using the above artificial prosthesis.

【0006】以下本発明の生体埋入用補綴物を実施態様
に基づき詳細に説明する。本発明で言う生体埋入用補綴
物とは人工血管補綴用パッチ、人工気管補綴用パッチ等
のパッチ類、人工血管、人工気管、人工靭帯、人工心
臓、人工皮膚、人工皮膚用シート、ブラットアクセス用
グラフト、ステント(人工血管、人工気管、人工食道等
用)などがあるが、本発明の有効性はこれらに限定され
るものではなく、生体器官の補綴物の全てにわたるもの
である。本発明で言うコンプライアンスとは、下式で定
義されるものである。
The prosthesis for bioimplantation of the present invention will be described below in detail based on embodiments. The term “bioimplantation prosthesis” used in the present invention refers to patches such as artificial blood vessel prosthetic patch, artificial tracheal prosthetic patch, artificial blood vessel, artificial trachea, artificial ligament, artificial heart, artificial skin, artificial skin sheet, and brat access. Grafts, stents (for artificial blood vessels, artificial trachea, artificial esophagus, etc.) and the like, but the effectiveness of the present invention is not limited to these, and extends to all prostheses of living organs. The compliance referred to in the present invention is defined by the following formula.

【0007】[0007]

【式1】 C=(ΔV/ΔP・V0)×100 [%/mmHg] (式1) (式中、Cはコンプライアンス、V0は内圧100mmHg
の時の体積、ΔV/ΔPは内圧100mmHgの時の圧力変
化に対する体積変化の割合を示す。)
[Formula 1] C = (ΔV / ΔP · V 0 ) × 100 [% / mmHg] (Formula 1) (In the formula, C is compliance, V 0 is internal pressure 100 mmHg
The volume when ΔV / ΔP is the ratio of the volume change to the pressure change when the internal pressure is 100 mmHg. )

【0008】フィラメントからなる構造体とは織物、編
物、組物、不織布などを示す。織り方、編み方、組み方
はとくに限定されない。平織り、メリヤス編み、などが
ある。フィラメントの径は0.005mmφ〜1mmφの範
囲が好ましく、特に、0.05mmφ〜0.3mmφの範囲が
好ましい。
The structure made of filaments means woven fabric, knitted fabric, braid, non-woven fabric and the like. The weaving method, knitting method, and assembling method are not particularly limited. There are plain weave and knitting. The filament diameter is preferably in the range of 0.005 mmφ to 1 mmφ, and particularly preferably in the range of 0.05 mmφ to 0.3 mmφ.

【0009】本発明は、実質的に、本体がオレフィン系
エラストマーフィラメントからなる構造体であれば良
く、部分的に補強等のために他の弾性を有さない材料が
用いてあったり、表面に生体適合性材料等がコーティン
グしてあっても構わない。また該材質は生体安定性のオ
レフィン系エラストマーであれば特に限定されるもので
はない。生体安定性のオレフィン系エラストマーとし
て、エチレンプロピレンゴム、ブチルゴム等のオレフィ
ン系ゴムとポリプロピレン、ポリエチレンからなる複合
材料、エチレンやプロピレンとαオレフィンとの共重合
体(JSR.EP;日本合成ゴム(株)、タフマー;三井
石油化学(株))、スチレンとαオレフィン(クレイト
ン;シェル(株))との共重合体等が挙げられる。本発明
で言うαオレフィンとしてプロピレン、1−ブテン、ブ
ダジエン、イソプレンなどが挙げられる。部分的に水素
添加してあってもかまわない。該材質で構造体を形成す
ることにより柔軟性、生体内安定性、組織侵入性を得る
ことができる。
In the present invention, the main body is essentially a structure comprising an olefin elastomer filament, and other non-elastic material is used for partial reinforcement or the like, or the surface thereof is A biocompatible material or the like may be coated. The material is not particularly limited as long as it is a biostable olefin elastomer. As a bio-stable olefin elastomer, a composite material consisting of polypropylene, polyethylene and an olefin rubber such as ethylene propylene rubber and butyl rubber, a copolymer of ethylene and propylene and α-olefin (JSR.EP; Japan Synthetic Rubber Co., Ltd.) , Tuffmer; Mitsui Petrochemical Co., Ltd., and copolymers of styrene and α-olefin (Kraton; Shell Co., Ltd.). Examples of the α-olefin used in the present invention include propylene, 1-butene, budadiene, isoprene and the like. It may be partially hydrogenated. By forming a structure with the material, flexibility, in vivo stability, and tissue invasion can be obtained.

【0010】以下、本発明の実施例を具体的に説明す
る。
Embodiments of the present invention will be specifically described below.

【実施例】【Example】

(実施例1)ポリオレフィン系エラストマーのモノフィ
ラメント(0.1mmφ、タフマーA4090、三井石油化学
(株))を用いてメリヤス編みのチューブ(内径5mmφ、
長さ8cm)を作製した。これに牛血を用いてプレクロッ
トを行い、片方を閉じた後、シリンジポンプにてウシの
ACD血を送液し内圧の変化を測定した。送液量と内圧
変化よりコンプライアンスは0.15であった。
(Example 1) Monofilament of polyolefin elastomer (0.1 mmφ, Tuffmer A4090, Mitsui Petrochemical
Knitting tube (inner diameter 5 mmφ,
A length of 8 cm) was produced. This was pre-clotted with bovine blood, and after closing one side, bovine ACD blood was delivered by a syringe pump to measure changes in internal pressure. The compliance was 0.15 based on the change in the amount of liquid sent and the change in internal pressure.

【0011】(比較例1)市販のポリエステル製人工血
管を用いて実施例1と同様の実験を行ったところコンプ
ライアンスは 0.06であった。人の血管のコンプライ
アンスは 0.1〜0.8であるから、実施例1の方が生
体に近似したコンプライアンスを有していることがわか
る。
Comparative Example 1 The same experiment as in Example 1 was carried out using a commercially available polyester artificial blood vessel, and the compliance was 0.06. Since the compliance of human blood vessels is 0.1 to 0.8, it can be seen that Example 1 has a compliance closer to that of a living body.

【0012】(実施例2)エチレン−αオレフィン共重
合体であるタフマー A4090(三井石油化学(株))を用
い、ヒートプレスにより幅30mm、長さ120mm、厚さ
0.3mm の移植片を作製した。この移植片をイヌの皮下
に埋入し、1ヶ月後、6ヶ月後にそれぞれ移植片を取り
出し、JIS K7113 に基づき引張強度を調べ
た。結果を表1に示す。また、移植片の周囲の組織反応
を病理標本を作製し観察したところ、炎症反応等は、低
炎症性材料と言われているポリエチレンテレフタレート
と同等の低いものであった。
Example 2 Using Tuffmer A4090 (Mitsui Petrochemical Co., Ltd.), which is an ethylene-α-olefin copolymer, a graft having a width of 30 mm, a length of 120 mm and a thickness of 0.3 mm was prepared by heat pressing. did. This graft was embedded under the skin of dogs, and the graft was taken out after 1 month and 6 months, and the tensile strength was examined according to JIS K7113. The results are shown in Table 1. In addition, when a pathological specimen was prepared and observed for the tissue reaction around the graft, the inflammatory reaction and the like were as low as those of polyethylene terephthalate, which is said to be a low inflammatory material.

【0013】(実施例3)プロピレン−αオレフィン共
重合体であるタフマー XR110T(三井石油化学(株))を
用いて実施例2と同様の実験を行った。結果を表1に示
す。移植片の周囲に炎症反応は実施例2と同様の低いも
のであった。
Example 3 The same experiment as in Example 2 was conducted using Tufmer XR110T (Mitsui Petrochemical Co., Ltd.), which is a propylene-α olefin copolymer. The results are shown in Table 1. The inflammatory response around the implant was as low as in Example 2.

【0014】(比較例2)ポリウレタンエラストマー
(ペレセン2363:ダウケミカル日本(株))を用いて実施
例2と同様の実験を行った。結果を表1に示す。
Comparative Example 2 The same experiment as in Example 2 was conducted using a polyurethane elastomer (Peresen 2363: Dow Chemical Japan Co., Ltd.). The results are shown in Table 1.

【0015】[0015]

【表1】 [Table 1]

【0016】表1に示したように実施例2、3の材料は
皮下埋入後6ヶ月でもその物性に変化は無かったが、比
較例2では物性の低下が認められ、オレフィン系エラス
トマーが生体内安定性に優れていることがわかる。この
ように、オレフィン系エラストマーフィラメントで作製
した構造体を用いることにより、生体に近いコンプライ
アンスを有し、生体内安定性、組織親和性に優れた補綴
物を提供することができる。
As shown in Table 1, the physical properties of the materials of Examples 2 and 3 did not change even after 6 months from the subcutaneous implantation, but in Comparative Example 2, the physical properties were deteriorated, and the olefin elastomer was produced. It can be seen that the internal stability is excellent. As described above, by using the structure made of the olefin elastomer filament, it is possible to provide a prosthesis having compliance close to that of a living body, excellent in-vivo stability, and excellent in tissue affinity.

【0017】[0017]

【発明の効果】以上、詳述したように、本発明により得
られるオレフィン系エラストマーフィラメントよりなる
構造体(織物、編物、不織布など)は、弾性を有し生体
安定性に優れているので、移植部位での炎症、肥厚等を
起こさず、長期埋入しても劣化しない補綴物として有効
である。
As described above in detail, the structure (woven fabric, knitted fabric, non-woven fabric, etc.) made of the olefin elastomer filaments obtained by the present invention has elasticity and is excellent in biostability. It is effective as a prosthesis that does not cause inflammation or thickening at the site and does not deteriorate even after long-term implantation.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 江崎 祐造 神奈川県足柄上郡中井町井ノ口1500番地 テルモ株式会社内 (72)発明者 高野 良仁 神奈川県足柄上郡中井町井ノ口1500番地 テルモ株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yuzo Ezaki 1500 Inoguchi, Nakai-cho, Ashigarakami-gun, Kanagawa Terumo Corporation (72) Yoshihito Takano 1500 Inoguchi, Nakai-cho, Ashigagami-gun, Kanagawa Terumo Corporation

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 オレフィン系エラストマーフィラメント
より成る、編物、織物、組物、不織布またはこれらの複
合体により構成される生体埋入用人工補綴物。
1. A bioimplantable artificial prosthesis composed of a knitted fabric, a woven fabric, a braided fabric, a non-woven fabric, or a composite of the olefin elastomer filaments.
JP5000178A 1993-01-05 1993-01-05 Artificial prosthesis Pending JPH06197948A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5000178A JPH06197948A (en) 1993-01-05 1993-01-05 Artificial prosthesis

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5000178A JPH06197948A (en) 1993-01-05 1993-01-05 Artificial prosthesis

Publications (1)

Publication Number Publication Date
JPH06197948A true JPH06197948A (en) 1994-07-19

Family

ID=11466758

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5000178A Pending JPH06197948A (en) 1993-01-05 1993-01-05 Artificial prosthesis

Country Status (1)

Country Link
JP (1) JPH06197948A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0742021A2 (en) * 1995-04-27 1996-11-13 Terumo Kabushiki Kaisha Puncture resistant medical material
JP2004337307A (en) * 2003-05-14 2004-12-02 Toyota Motor Corp Artificial skin
JP2005270397A (en) * 2004-03-25 2005-10-06 Tomoyuki Yamaya Artificial organ
JP2008501069A (en) * 2004-05-14 2008-01-17 ダウ・コーニング・アイルランド・リミテッド Coating composition
JP2011212464A (en) * 1998-06-17 2011-10-27 Fidia Advanced Biopolymers Srl Three-dimensional prosthesis containing hyaluronic acid derivative and process for their preparation

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0742021A2 (en) * 1995-04-27 1996-11-13 Terumo Kabushiki Kaisha Puncture resistant medical material
EP0742021B1 (en) * 1995-04-27 2002-01-02 Terumo Kabushiki Kaisha Puncture resistant medical material
JP2011212464A (en) * 1998-06-17 2011-10-27 Fidia Advanced Biopolymers Srl Three-dimensional prosthesis containing hyaluronic acid derivative and process for their preparation
JP2004337307A (en) * 2003-05-14 2004-12-02 Toyota Motor Corp Artificial skin
JP2005270397A (en) * 2004-03-25 2005-10-06 Tomoyuki Yamaya Artificial organ
JP2008501069A (en) * 2004-05-14 2008-01-17 ダウ・コーニング・アイルランド・リミテッド Coating composition
JP2014132111A (en) * 2004-05-14 2014-07-17 Dow Corning Ireland Ltd Coating composition

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