JPH0624587B2 - Artificial blood vessel - Google Patents
Artificial blood vesselInfo
- Publication number
- JPH0624587B2 JPH0624587B2 JP62315379A JP31537987A JPH0624587B2 JP H0624587 B2 JPH0624587 B2 JP H0624587B2 JP 62315379 A JP62315379 A JP 62315379A JP 31537987 A JP31537987 A JP 31537987A JP H0624587 B2 JPH0624587 B2 JP H0624587B2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- blood vessel
- artificial blood
- crimping
- needle
- 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.)
- Expired - Fee Related
Links
Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D3/00—Woven fabrics characterised by their shape
- D03D3/02—Tubular fabrics
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2509/00—Medical; Hygiene
- D10B2509/06—Vascular grafts; stents
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、熱可塑性樹脂繊維の編織物よりなる人工血
管、殊にポリエステル繊維、即ち、ポリエチレンテレフ
タレート紡糸繊維より編織したチューブに、クリンプ加
工を施し、剛性、縫合性などの所特性を改良した人工血
管に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention provides an artificial blood vessel made of a knitted fabric of a thermoplastic resin fiber, particularly a polyester fiber, that is, a tube knitted from a polyethylene terephthalate spun fiber, which is crimped. The present invention relates to an artificial blood vessel which has been subjected to treatment and has improved properties such as rigidity and sutureability.
人工血管は、歴史的にはポリアミド或いはアクリル系繊
維を用いた編織物も過去において用いられてきた。現在
ではポリエステル或いは四弗化ポリエチレンを素材とす
る人工血管が主に提供されている。Historically, artificial blood vessels have also been used as knitted fabrics using polyamide or acrylic fibers. At present, artificial blood vessels made of polyester or polyethylene tetrafluoride are mainly provided.
現行の人工血管に要求される条件は多岐にわたり、例え
ば、毒性のないこと、異物反応がないこと、耐久性があ
り劣化しないこと、適度の弾性があること、抗血栓性が
あること、器質化治癒が良好であること、縫合し易いこ
と、各種の形態のものが作製できこと、漏血が少ないこ
と、感染抵抗性があることなどの多くの条件が挙げられ
る。There are various conditions required for the current artificial blood vessels, such as no toxicity, no foreign body reaction, durable and not deteriorated, moderate elasticity, antithrombotic property, organizing There are many conditions such as good healing, easy suturing, preparation of various forms, low blood leakage, and resistance to infection.
素材としては、上記した各種の熱可塑性樹脂が使用され
てきたが、その中では、ポリエステル系合成繊維が、化
学的に安定で耐久性が大きく、組織反応が少ないので、
代用血管として多く用いられ、管状の平織りとメリヤス
編みのものが用いらており、例えば、１〜３デニール
〔９０００ｍの長さの糸の重さ（単位ｇ）〕のモノフィ
ラメントを、数十〜数百本束ねた糸をチュープ状に編織
したものなどが挙げられる。これらチューブからなる人
工血管は、平滑な管壁構造では、体内での屈曲或いは外
圧により織れ曲り（キンク現象）により、内腔が閉塞す
ることがあり、それを防止するためクリンプ加工と呼ば
れる襞付け工程を経て製品とされている。（製品は所謂
蛇腹状チューブとなる） このクリンプ加工に関しては、例えば、米国特許第３３
３７６７３号明細書に、丸棒表面に布製のチューブを嵌
め込み、チューブの上から糸を等間隔に螺旋状に巻き付
け、そのままチューブを軸方向に圧縮して縮めることに
より襞を形成し、加熱して熱セットする技術が開示され
ている。As the material, the above-mentioned various thermoplastic resins have been used, but among them, polyester-based synthetic fibers are chemically stable and have a large durability, and since there is little tissue reaction,
It is often used as a substitute blood vessel, and tubular plain weave and knitted knit are used. For example, a monofilament having a denier of 1 to 3 denier [yarn weight of 9000 m (unit: g)] is tens to several tens. For example, a yarn obtained by knitting 100 bundled yarns in a tube shape may be used. Artificial blood vessels consisting of these tubes have a smooth tube wall structure, and the internal lumen may become blocked due to bending (kinking phenomenon) in the body due to bending or external pressure in the body, and to prevent this, it is called a crimping process. It is made into a product through the process. (The product is a so-called bellows-shaped tube.) Regarding this crimping process, for example, US Pat.
In No. 37673, a cloth tube is fitted on the surface of a round bar, threads are spirally wound on the tube at equal intervals, and the tube is axially compressed and compressed to form folds and heated. Techniques for heat setting are disclosed.
しかし、従来、クリンプ加工を施された人工血管は、殊
に、平織りに代表される織布を素材とする場合、仕上が
り製品の剛性が高くなる（製品が固い）という問題があ
る。人工血管の剛性が高い場合、生体の血管と連結する
ため使用する縫合針が貫通する際、大きな抵抗があり、
縫合操作が容易でない。又、縫合操作に於いては、人工
血管の端部を曲げる必要があるが、曲げに要する力が大
であって、手術手技が難しく、生体血管に大きな力を付
加し、血管壁を損傷することもある。However, conventionally, a crimped artificial blood vessel has a problem that the rigidity of a finished product is high (the product is hard), particularly when a woven cloth represented by plain weave is used as a material. If the artificial blood vessel has high rigidity, there is a great resistance when the suture needle used to connect with the blood vessel of the living body penetrates,
The sewing operation is not easy. In addition, in the suturing operation, it is necessary to bend the end of the artificial blood vessel, but the force required for bending is large and the surgical procedure is difficult, and a large force is applied to the living blood vessel, damaging the blood vessel wall. Sometimes.
この様に、従来のクリンプ加工を施した人工血管の剛性
が高いのは、前記織布製の人工血管は、一般に、胸部や
腹部の大径血管に適用されることが多く、出血を抑える
ために織りの目を細かくしてあることに加え、クリンプ
部の形状、構造が適切ではなかったことによる。即ち、
従来製品のクリンプ部は、襞の一辺の長さが短く、深さ
が浅く、且つ、襞の頂点間の間隔が短い、所謂細かい襞
を有する人工血管である。具体には、例えば、人工血管
の径に関わりなく、襞の一辺の長さが０．５〜１mm程度
であり、且つ、頂点間隔が極めて小となる様強く押し縮
められた人工血管である。そのため剛性が高くなること
に加え、更に、移植後、体内で経時的に伸長して蛇行を
生ずる原因ともなる。In this way, the rigidity of the conventional crimped artificial blood vessel is high because the woven artificial blood vessel is generally applied to large-diameter blood vessels in the chest and abdomen to suppress bleeding. In addition to having a fine weave, the shape and structure of the crimp part were not appropriate. That is,
The crimp portion of the conventional product is an artificial blood vessel having a so-called fine fold, in which the length of one side of the fold is short, the depth is shallow, and the interval between the vertices of the fold is short. Specifically, for example, the artificial blood vessel has a length of one side of the folds of about 0.5 to 1 mm regardless of the diameter of the artificial blood vessel and is strongly compressed so that the apex interval is extremely small. Therefore, in addition to increasing the rigidity, it also causes a meandering due to time-dependent expansion in the body after transplantation.
本発明は、長さ方向の伸展性及び高度のキンク抵抗性を
有し、加重によって偏平化した状態から、加重を除いた
時の口径復元性に富み、且つ、柔軟性に富み、縫合操作
が容易で、更に、経時的な伸びの少ない人工血管に関す
る。The present invention has extensibility in the length direction and a high degree of kink resistance, and is rich in caliber restoration when the weight is removed from the state of being flattened by weighting, and rich in flexibility, and suturing operation is easy. The present invention relates to an artificial blood vessel which is easy and has little elongation over time.
即ち、本発明は、熱可塑性樹脂繊維を編織してなるチュ
ーブであって、該チューブは螺旋状にクリンプ加工され
ており、チューブ内径Ｘ（mm）とクリンプ高さＹ（mm）
(Y≧1)とが、 1/20(X+11)≦Ｙ≦1/8(X+2) の関係を有し、且つ、クリンプ加工前のチューブ長さＬ
O(mm) とクリンプ加工後のチューブ長さＬ(mm)とが、 0.15≦L/LO≦0.75 の関係を有するチューブからなる人工血管に関する。That is, the present invention relates to a tube formed by weaving a thermoplastic resin fiber, the tube being spirally crimped, and having a tube inner diameter X (mm) and a crimp height Y (mm).
(Y ≧ 1) and 1/20 (X + 11) ≦ Y ≦ 1/8 (X + 2), and the tube length L before crimping
The present invention relates to an artificial blood vessel composed of a tube in which O (mm) and a tube length L (mm) after crimping have a relationship of 0.15 ≦ L / L O ≦ 0.75.
本発明の人工血管では、上記チューブ内径とクリンプ高
さとの関係及びクリンプ加工前とクリンプ加工後のチュ
ーブ長さの比が極めて重要である。クリンプ高さが限定
範囲未満であると、キンク現象を生じ易く、人工血管の
閉塞と招き易い。限定範囲を越える場合は、内腔の凹凸
が大きくなり、血液の滞留が生じて、血栓が多量に形成
され、人工血管が閉塞し易くなる。又、クリンプ加工前
後のチュープ長さの比が、限定範囲未満では、キンク現
象は生じ難くなるが、人工血管の剛性が高くなり、縫合
操作が困難となる。更に、移植後、体内での経時的な伸
長が大となる。限定範囲を越える場合は、キンク現象が
生じ易くなり、人工血管の閉塞を招く。クリンプ加工前
後のチューブ長さの比（L/LO）は、０．４０〜０．６５
であるものがより好ましい。In the artificial blood vessel of the present invention, the relationship between the inner diameter of the tube and the crimp height and the ratio of the tube length before crimping and after crimping are extremely important. If the crimp height is less than the limited range, the kink phenomenon is likely to occur and the artificial blood vessel is likely to be blocked. When the amount exceeds the limited range, the irregularity of the lumen becomes large, blood retention occurs, a large amount of thrombus is formed, and the artificial blood vessel is easily blocked. Further, if the ratio of the tube lengths before and after crimping is less than the limited range, the kink phenomenon is less likely to occur, but the rigidity of the artificial blood vessel becomes high, and the suturing operation becomes difficult. Furthermore, after the transplantation, the time-dependent elongation in the body becomes large. If the amount exceeds the limited range, the kink phenomenon is likely to occur, resulting in occlusion of the artificial blood vessel. The ratio of crimping around the tube length (L / L O) is 0.40 to 0.65
Is more preferable.
熱可塑性樹脂繊維を形成する熱可塑性樹脂としては、ポ
リエチレン、ポリプロピレンなどのポリオレフィン、ポ
リアミド、ポリウレタン、ポリエステルなどが挙げられ
る。特に、化学的に安定で耐久性が大きく、組織反応の
少ないポリエステル、特に、ポリエチレンテレフタレー
トが好適である。０これら熱可塑性樹脂を用いて通常の
方法で得られる０．５〜５デニール程度のモノフィラメ
ント数十〜数百本を撚った糸を、縦糸及び横糸として編
織した布によってチューブを形成する。Examples of the thermoplastic resin forming the thermoplastic resin fiber include polyolefin such as polyethylene and polypropylene, polyamide, polyurethane, polyester and the like. In particular, polyester that is chemically stable, has high durability, and has little tissue reaction, particularly polyethylene terephthalate is preferable. 0 A tube is formed from a cloth obtained by weaving tens to hundreds of monofilaments of about 0.5 to 5 denier obtained by a usual method using these thermoplastic resins as warp and weft.
クリンプ加工は、上記チューブを、表面を充分に研磨し
たネジ棒に嵌装し、ネジ溝に沿って適宜の糸を巻き付
け、そのままの状態で加温熱処理して熱セットすること
により実施する。巻き付けは、チューブがネジの形状に
ほぼ一致して変形する程度に、充分な張力を加えて行
う。The crimping process is carried out by fitting the above-mentioned tube into a threaded rod whose surface has been sufficiently polished, winding an appropriate thread along the thread groove, and heat-setting it by heating it in that state. The wrapping is performed by applying sufficient tension so that the tube is deformed substantially in conformity with the shape of the screw.
チューブ表面に巻き付ける糸は、熱セット時の加温に対
する耐熱性と巻き付け張力に抗する強度を有し、チュー
ブを変質させないものであれば特に限定はされないが、
チューブを形成する素材と同じ材料からなる糸を用いる
のが好ましい。The yarn wound around the tube surface is not particularly limited as long as it has heat resistance against heating during heat setting and strength against winding tension and does not deteriorate the tube.
It is preferable to use a thread made of the same material as the material forming the tube.
ネジ棒の材質は限定はされないが、嵌装されるチューブ
に変質などの悪影響を及ぼさず、熱セット時の加温に対
して耐熱性があるものであればよい。入手のし易さ、価
格なども考慮すればステンレススチール製のネジ棒が好
適である。The material of the screw rod is not limited, but may be any one as long as it does not adversely affect the tube to be fitted such as deterioration and has heat resistance against heating during heat setting. A screw rod made of stainless steel is suitable in consideration of availability and price.
本発明の人工血管のクリンプの形状は、ほぼ使用される
ネジ棒のネジ溝と一致するものとなる。従って、ネジ棒
のネジ溝の深さ、ピッチは極めて重要であり、目的とす
るクリンプ形状に合わせて選択される。The shape of the crimp of the artificial blood vessel of the present invention substantially matches the thread groove of the threaded rod used. Therefore, the depth and pitch of the thread groove of the threaded rod are extremely important and are selected according to the intended crimp shape.
以下に実施例によって本発明を更に詳しく説明する。The present invention will be described in more detail below with reference to examples.
実施例１ １．０デニールのポリエチレンテレフタレート繊維を撚
糸して、縦糸として５０デニール、横糸として１００デ
ニールの糸を得た。この糸を用いて平織りチューブを作
製した。このチューブを偏平にして織り幅を計測したと
ころ、チューブ径は２０．２mmφであった。Example 1 A polyethylene terephthalate fiber having a denier of 1.0 was twisted to obtain a yarn having a denier of 50 denier and a weft of 100 denier. A plain weave tube was produced using this yarn. When this tube was flattened and the weaving width was measured, the tube diameter was 20.2 mmφ.
このチューブを水洗後、表面を充分に研磨した外径２０
mmφのステンレススチール製のＩＳＯ一般用メートルネ
ジに嵌装し、その上からネジ溝に沿って、ポリエチレン
製の糸を１kgの張力で巻き付けた後、１７０℃の温度で
３０分間加温し、熱セットを行った。熱セット後、チュ
ーブをネジ棒から抜き取り、メタノール及び水で洗浄
し、乾燥した。After washing this tube with water, the outer diameter was 20
It is fitted into a stainless steel ISO general-purpose metric screw of mmφ, and a polyethylene thread is wound along the thread groove from above with a tension of 1 kg, then heated at 170 ° C for 30 minutes and heated. I made the set. After heat setting, the tube was pulled out from the threaded rod, washed with methanol and water, and dried.
得られたクリンプ付き人工血管の内径は１８．０mm、ク
リンプ高さは２．０であった。又、クリンプ加工前後の
チューブ長さを比は０．５５であった。The resulting crimped artificial blood vessel had an inner diameter of 18.0 mm and a crimp height of 2.0. The ratio of tube length before and after crimping was 0.55.
この人工血管を１５cm長さを取って、その両端を持っ
て、直径４mmの円筒に密着させて曲げ、キンク現象を観
察したが、キンク現象は全く生じなかった。This artificial blood vessel was taken 15 cm in length, held at both ends thereof, and closely adhered to a cylinder having a diameter of 4 mm to bend it, and the kink phenomenon was observed, but the kink phenomenon did not occur at all.
又、血管縫合用の丸針３−０を、上記人工血管の断端か
ら３mmの位置に刺したところ、針は容易に貫通した。更
に、この人工血管を偏平とし、２枚重なった部分に針を
等してみたが、それでも針は容易に貫通した。断端をピ
ンセットで挟んで折り返す操作も容易であった。When a circular needle 3-0 for suturing a blood vessel was pierced at a position 3 mm from the stump of the artificial blood vessel, the needle easily penetrated. Furthermore, when this artificial blood vessel was made flat and a needle was made to be equal to the overlapping portion of the two sheets, the needle easily penetrated. It was easy to pinch the stump with tweezers and fold it back.
経時的な伸びについて促進試験するため、１３２℃の高
圧蒸気滅菌を１５分間行った後の伸びを測定したとこ
ろ、３．１％以下で伸びは極めて少なかった。In order to perform an accelerated test for elongation over time, the elongation was measured after high-pressure steam sterilization at 132 ° C. for 15 minutes, and the elongation was 3.1% or less, which was extremely small.
実施例２ １．３デニールのポリエチレンテレフタレート繊維を撚
糸して、縦糸として９４デニール、横糸として１８８デ
ニールの糸を得た。実施例１と同様にして織り幅を計測
したところ、チューブ径は１４．２mmφであった。Example 2 A 1.3 denier polyethylene terephthalate fiber was twisted to obtain 94 denier warp and 188 denier weft. When the weaving width was measured in the same manner as in Example 1, the tube diameter was 14.2 mmφ.
このチューブを水洗後、表面を充分に研磨した外径１４
mmφのステンレススチール製のＩＳＯ一般用メートルネ
ジに嵌装し、両端をL/LOが0.70となるように引っ張った
状態で固定し、その上からネジ溝に沿って、ポリエステ
ル製の糸を１kgの張力で巻き付けた後、１７０℃の温度
で４０分間加温し、熱セットを行った。熱セット後、チ
ューブをネジ棒から抜き取り、メタノール及び水で洗浄
し、乾燥した。After rinsing this tube with water, the outer diameter of which was thoroughly polished 14
fitted stainless steel ISO general purpose metric screws mm [phi], and fixed in a state where both ends L / L O is pulled so as to be 0.70 along the thread groove thereon, 1 kg of yarn made of a polyester After wrapping with the tension of, the temperature was heated at 170 ° C. for 40 minutes to perform heat setting. After heat setting, the tube was pulled out from the threaded rod, washed with methanol and water, and dried.
得られたクリンプ付き人工血管の内径は１２．２mm、ク
リンプ高さは１．３であった。The resulting crimped artificial blood vessel had an inner diameter of 12.2 mm and a crimp height of 1.3.
この人工血管を１５cm長さ取って、その両端を付き合わ
せた円弧状としては、キンク現象を観察したが、キンク
現象は全く生じなかった。A kink phenomenon was observed when the artificial blood vessel had a length of 15 cm and had an arcuate shape in which both ends thereof were abutted, but the kink phenomenon did not occur at all.
又、血管縫合用の丸針３−０を、上記人工血管の断端か
ら３mmの位置に刺したところ、針は容易に貫通した。更
に、この人工血管を偏平とし、２枚重なった部分に針を
通してみたが、それでも針は容易に貫通した。断端をピ
ンセットで挟んで折り返す操作も容易であった。When a circular needle 3-0 for suturing a blood vessel was pierced at a position 3 mm from the stump of the artificial blood vessel, the needle easily penetrated. Furthermore, when this artificial blood vessel was flattened and a needle was passed through the overlapping portion of the two sheets, the needle still easily penetrated. It was easy to pinch the stump with tweezers and fold it back.
経時的な伸びについて促進試験するため、１３２℃の高
圧蒸気滅菌を１５分間行った後の伸びを測定したとこ
ろ、０．５％以下で伸びは極めて少なかった。In order to perform an accelerated test for the elongation over time, the elongation was measured after high-pressure steam sterilization at 132 ° C. for 15 minutes, and the elongation was 0.5% or less, which was extremely small.
比較例１ 実施例２と同様にしてチューブを成形し、このチューブ
を水洗後、表面を充分に研磨した外径１４mmφのステン
レススチール製の表面平滑な棒に嵌装し、直径０．５mm
のポリエステル糸を、０．５mmの間隔で螺旋状に巻き付
けた。次いで、両端からチューブを押し縮めて襞を形成
した。襞がチューブ全体に形成されるまで強く押し縮め
たまま、１７０℃の温度で４０分間加温し、熱セットを
行った。熱セット後、チューブをネジ棒から抜き取り、
メタノール及び水で洗浄し、乾燥した。Comparative Example 1 A tube was molded in the same manner as in Example 2, the tube was washed with water, and then fitted on a surface-polished stainless steel rod having an outer diameter of 14 mmφ and a diameter of 0.5 mm.
The polyester yarn of was wound spirally at intervals of 0.5 mm. The tube was then compressed from both ends to form a fold. Heat setting was performed by heating for 40 minutes at a temperature of 170 ° C. while strongly compressing until folds were formed on the entire tube. After heat setting, pull out the tube from the threaded rod,
It was washed with methanol and water and dried.
得られたクリンプ付き人工血管の内径は１２．０mmであ
った。又、クリンプ高さは０．２５mm、クリンプ加工前
後のチューブ長さの比は０．１３であり、何れも極めて
小さいものであった。The inner diameter of the obtained crimped artificial blood vessel was 12.0 mm. The crimp height was 0.25 mm and the tube length ratio before and after crimping was 0.13, which were all extremely small.
この人工血管を１５cm長さ取って、その両端を付き合わ
せて円弧状として、キンク現象を観察したが、キンク現
象は全く生じなかった。A 15 cm length of this artificial blood vessel was taken, and both ends thereof were attached to each other to form an arc shape, and the kink phenomenon was observed, but the kink phenomenon did not occur at all.
しかし、細かな襞が密に存在するため、血管縫合用の丸
針３−０を、上記人工血管の断端から３mmの位置に刺し
たところ、針を貫通させるには極めて大きな力を要し
た。更に、この人工血管を偏平とし、２枚重なった部分
に針を通してみたところ、針は貫通しなかった。However, since the fine folds are densely present, when a circular needle 3-0 for suturing a blood vessel was pierced at a position 3 mm from the stump of the artificial blood vessel, an extremely large force was required to penetrate the needle. . Further, when the artificial blood vessel was flattened and a needle was passed through the overlapping portion of the two sheets, the needle did not penetrate.
経時的な伸びについて促進試験をするため、１３２℃の
高圧蒸気滅菌を１５分間行った後の伸びを測定したとこ
ろ、２２％であって極めて大であった。In order to carry out an accelerated test for elongation over time, the elongation after high-pressure steam sterilization at 132 ° C. for 15 minutes was measured and found to be 22%, which was extremely large.
比較例２ 実施例１と同じチューブを用いて、実施例１と同じネジ
棒を使用し、同様の熱セットを行って、クリンプ付きチ
ューブを形成した。Comparative Example 2 The same tube as in Example 1 was used, the same screw rod as in Example 1 was used, and the same heat setting was performed to form a crimped tube.
このチューブを、外径１８cmの表面平滑な丸棒に乾燥
し、クリンプ加工前後のチューブ長さの比（L/LO）が
０．７７となるように、両端から押し縮めて固定し、１
７０℃の温度で４０分間熱セットを行った。得られたク
リンプ付き人工血管のクリンプ高さは１．３mmであっ
た。This tube was dried on a round rod with an outer diameter of 18 cm and the surface was smoothed, and was pressed and fixed from both ends so that the ratio of the tube length before and after crimping (L / L 2 O ) was 0.77.
Heat setting was performed at a temperature of 70 ° C. for 40 minutes. The crimp height of the obtained artificial blood vessel with crimp was 1.3 mm.
この人工血管を１５cm長さ取り、その両端を持って、直
径４cmの円筒に密着させて曲げ、耐キンク性を観察した
ところ、人工血管の内腔は殆ど潰れて残らない状態とな
った。This artificial blood vessel having a length of 15 cm was held, held at both ends thereof, and brought into close contact with a cylinder having a diameter of 4 cm and bent, and the kink resistance was observed.
本発明の人工血管は、熱可塑性樹脂繊維製の布からなる
クリンプ加工を施した人工血管であり、特定のクリンプ
形状とすることにより、柔軟で、縫合針の通りが良く、
経時的な伸びの少ない人工血管である。The artificial blood vessel of the present invention is a crimped artificial blood vessel made of a thermoplastic resin fiber cloth, and by having a specific crimp shape, it is flexible and can be easily passed through a suture needle,
It is an artificial blood vessel with little elongation over time.
Claims (2)
であって、該チューブは螺旋状にクリンプ加工されてお
り、チューブ内径Ｘ（mm）とクリンプ高さＹ（mm）(Y≧
1)とが、 1/20(X+11)≦Y ≦1/8(X+2) の関係を有し、且つ、クリンプ加工前のチューブ長さＬ
O(mm) とクリンプ加工後のチューブ長さＬ(mm)とが、 0.15≦L/LO≦0.75 の関係を有するチューブからなる人工血管。1. A tube obtained by weaving a thermoplastic resin fiber, wherein the tube is spirally crimped, and the tube inner diameter X (mm) and the crimp height Y (mm) (Y ≧
1) has a relationship of 1/20 (X + 11) ≦ Y ≦ 1/8 (X + 2), and the tube length L before crimping
An artificial blood vessel comprising a tube in which O (mm) and a tube length L (mm) after crimping have a relationship of 0.15 ≦ L / L O ≦ 0.75.
トである特許請求の範囲第(1)項記載の人工血管。2. The artificial blood vessel according to claim 1, wherein the thermoplastic resin is polyethylene terephthalate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62315379A JPH0624587B2 (en) | 1987-12-15 | 1987-12-15 | Artificial blood vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62315379A JPH0624587B2 (en) | 1987-12-15 | 1987-12-15 | Artificial blood vessel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01155860A JPH01155860A (en) | 1989-06-19 |
| JPH0624587B2 true JPH0624587B2 (en) | 1994-04-06 |
Family
ID=18064698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62315379A Expired - Fee Related JPH0624587B2 (en) | 1987-12-15 | 1987-12-15 | Artificial blood vessel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0624587B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018066476A1 (en) | 2016-10-07 | 2018-04-12 | 東レ株式会社 | Tubular fabric |
| CN113456293A (en) * | 2020-03-31 | 2021-10-01 | 脉通医疗科技(嘉兴)有限公司 | Preparation method of artificial blood vessel and artificial blood vessel |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7000649B2 (en) | 2002-03-20 | 2006-02-21 | Terumo Kabushiki Kaisha | Woven tubing for stent type blood vascular prosthesis and stent type blood vascular prosthesis using the tubing |
| US7063721B2 (en) | 2002-03-20 | 2006-06-20 | Terumo Kabushiki Kaisha | Woven tubing for stent type blood vascular prosthesis and stent type blood vascular prosthesis using the tubing |
| WO2006054799A1 (en) * | 2004-11-19 | 2006-05-26 | Teijin Limited | Cylindrical member and process for producing the same |
| JP6188514B2 (en) * | 2013-09-25 | 2017-08-30 | テルモ株式会社 | Bellows-like lumen structure |
| JP6423054B2 (en) * | 2017-08-01 | 2018-11-14 | テルモ株式会社 | Bellows-like lumen structure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3337673A (en) * | 1958-07-31 | 1967-08-22 | Us Catheter & Instr Corp | Uniformly corrugated prosthesis and process of making same |
| JPS5270597A (en) * | 1975-12-08 | 1977-06-11 | Meadox Medicals Inc | Annularly crimped tubular artificial corrector and method of producing same |
-
1987
- 1987-12-15 JP JP62315379A patent/JPH0624587B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3337673A (en) * | 1958-07-31 | 1967-08-22 | Us Catheter & Instr Corp | Uniformly corrugated prosthesis and process of making same |
| JPS5270597A (en) * | 1975-12-08 | 1977-06-11 | Meadox Medicals Inc | Annularly crimped tubular artificial corrector and method of producing same |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018066476A1 (en) | 2016-10-07 | 2018-04-12 | 東レ株式会社 | Tubular fabric |
| US11371172B2 (en) | 2016-10-07 | 2022-06-28 | Toray Industries, Inc. | Tubular woven fabric |
| CN113456293A (en) * | 2020-03-31 | 2021-10-01 | 脉通医疗科技(嘉兴)有限公司 | Preparation method of artificial blood vessel and artificial blood vessel |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01155860A (en) | 1989-06-19 |
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