JP3568756B2 - Vascular prosthesis fitting - Google Patents

Vascular prosthesis fitting Download PDF

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Publication number
JP3568756B2
JP3568756B2 JP29495897A JP29495897A JP3568756B2 JP 3568756 B2 JP3568756 B2 JP 3568756B2 JP 29495897 A JP29495897 A JP 29495897A JP 29495897 A JP29495897 A JP 29495897A JP 3568756 B2 JP3568756 B2 JP 3568756B2
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Japan
Prior art keywords
blood vessel
artificial blood
connecting device
living
cylindrical member
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Expired - Fee Related
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JP29495897A
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Japanese (ja)
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JPH11113937A (en
Inventor
寛幸 浅野
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Piolax Inc
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Piolax Inc
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Description

【0001】
【発明の属する技術分野】
本発明は、生体血管の一部を人工血管で置き換える際に、人工血管と生体血管との接続に利用される人工血管用接続具に関する。
【0002】
【従来の技術】
従来より、例えば胸部疾患の一つである大動脈瘤の治療において、ポリエステル繊維の織物等からなる人工血管により、その病巣部分を置き換える手術が行われている。この手術においては、人工血管と生体血管とを血液等の漏れがないように確実に接続すると共に、術後においては人工血管が生体血管と自然に一体化するように生体適合性が求められる。
【0003】
このような手術において、人工血管と生体血管とを接続するための接続具として、例えば特開平6−319755号公報には、合成樹脂製の中空体からなり、管状無孔質体からなる人工血管との接続部、外周側が肉厚の中央部、及び管状多孔質体からなる生体血管との吻合部を有することを特徴とする人口血管用接続具が開示されている。
【0004】
この人工血管用接続具を使用する際には、前記吻合部を生体血管内に挿入して両者を縫着すると共に、前記接続部を人工血管内に挿入して外側から全体を縫合糸で縛るか、又は、人工血管の押圧力で抜け止めするようにしている。
【0005】
【発明が解決しようとする課題】
しかしながら、特開平6−319755号の人工血管用接続具では、吻合部において生体血管と縫着できるようにするため、比較的軟らかい合成樹脂を使用しなければならず、縫合作業等に対する十分な剛性を維持できない可能性がある。また、人工血管との接続部は管状無孔質体からなり、生体血管との吻合部は多孔質体ではあっても、生体組織等が入り込みにくい構造であるので、術後の生体組織との一体化が進行しにくいという問題があった。更に、生体血管と接続具とを縫着する構造であるため、柔軟な生体血管との間に隙間が生じやすく、血液の漏れが生じやすいという問題があった。
【0006】
したがって、本発明の目的は、人工血管と生体血管との接続個所における剛性を十分に維持することができ、生体血管と自然に一体化できて、かつ、生体血管及び人工血管との接続個所からの血液の漏出を少なくすることができる人工血管用接続具を提供することにある。
【0007】
【課題を解決するための手段】
上記目的を達成するため、本発明の第1は、人工血管と生体血管とを接続するための人工血管用接続具において、耐腐食性の金属材料により一体に形成された中空の円筒部材からなり、該円筒部材の周壁には、複数の貫通孔が形成され、該円筒部材の外周には、周方向に沿った少なくとも1つの周方向溝が形成されていることを特徴とする人工血管用接続具を提供するものである。
【0008】
本発明の第2は、第1の発明において、前記貫通孔が、該円筒部材の一方の端部に近接した部分に、より多く形成されている人工血管用接続具を提供するものである。
【0009】
本発明の第3は 第1及び第2の発明にいて、前記円筒部材が、一方の端部に向けてテーパ状に拡開された形状をなす人工血管用接続具を提供するものである。
【0010】
【作用】
(発明の作用)
本発明によれば、人工血管用接続具を人工血管の端部内周に挿入する。人工血管用接続具の貫通孔に糸を通して、接続具と人工血管とを縫合する。この人工血管の端部を生体血管の端部内周に挿入し、人工血管用接続具の外周に人工血管を介して生体血管を配置する。生体血管の外周を糸で縛り付け、このとき糸で縛った部分を接続具の周方向溝に嵌合させる。その結果、生体血管と人工血管とが抜けることなくしっかりと接続される。また、人工血管用接続具の貫通孔は、生体組織がこの孔を通して接続具の内周に形成されるのを助け、人工血管及び接続具と、生体血管との一体化を促進する。
【0011】
(各クレームの作用)
本発明の第2によれば、前記貫通孔が、前記円筒部材の一方の端部に近接しており、かつ、その他の部分より数が多くなっているため、円筒部材の端部と人工血管の端部とを、縫合糸の縫い目間隔を短くして確実に縫合できる。
【0012】
本発明の第3によれば、前記円筒部材の一方の端部が、テーパ状に拡開された形状になっているため、接続具を人工血管の端部内周に挿入して縫合した後、接続具及び人工血管の端部を生体血管の内部に挿入したとき、接続具の上記拡径された端部によって、人工血管及び接続具を生体血管から抜けにくくすることができる。
【0013】
【発明の実施の形態】
図1〜3には、本発明による人工血管用接続具の一実施形態が示されている。図1は同接続具の斜視図、図2は同接続具を人工血管内に配置して縫着した状態を示す断面図、図3は同接続具を縫着した人工血管を生体血管に接続した状態を示す断面図である。
【0014】
図1に示すように、この人工血管用接続具10は、耐腐食性の金属材料からなる円筒部材11から基本的に構成されている。この金属材料としては、Ti、SUS、Pt、Au、又はこれらの合金などが好ましく使用される。前記円筒部材11の直径は12mm〜24mmが好ましく、長さは10mm〜30mmが好ましく、厚さは0.2mm〜2mmが好ましい。
【0015】
前記円筒部材11には、その周壁12を貫通する複数の貫通孔13a…13a及び13b…13bが形成されている。このうち、円筒部材11の一方の端部の周方向に並んで形成された貫通孔13a…13aは、縫合糸を通して人工血管20の端部に縫合するのに用いられる。また、残りの貫通孔13b…13bは、生体組織が接続具10の内周にも形成されるのを助ける。
【0016】
前記貫通孔13a…13a,13b…13bの内径は、1mm〜3mmが好ましく、特に生体組織を形成するための貫通穴13b…13bは、前記周壁12全面に略均等に配置されていることが好ましい。
【0017】
前記貫通孔の内径が1mmより小さいと、縫合糸を通す作業がしにくくなると共に、生体組織の形成に寄与しにくくなる。
【0018】
また、円筒部材11の周壁12の表面には、周方向に沿った周方向溝14…14が設けられている。周方向溝14は、少なくとも1つあればよいが、好ましくは軸方向に所定間隔で複数列に形成される。周方向溝14は、独立した環状の溝を複数配列してもよいが、1本又は2本以上の螺旋状の溝を所定ピッチで連続して形成してもよい。
【0019】
周方向溝14の幅は0.5mm〜5mmが好ましく、その深さは0.5mm〜2mmが好ましい。
【0020】
なお、接続具10の表面、例えば外周、内周等には、生体親和性を高める物質がコーティングされていてもよい。この生体親和性物質としては、ゼラチン、コラーゲン、フッ素樹脂、親水性ポリマー等が好ましく使用される。
【0021】
前記人工血管20には、可撓性、柔軟性に富み、形状保持性に優れ、良好な生体適合性、抗血栓性を有する材質であればよい。例えば、ポリエチレンテレフタレート等の繊維による管状の織物、不織布や、ポリテトラフルオロエチレン樹脂の多孔質体からなるチューブなどが好ましく使用される。人工血管20の大きさは適用箇所に応じて任意に設定すればよい。
【0022】
続いて、本発明による人工血管用接続具の使用方法について説明する。
図2に示すように、人工血管20の端部内周に本接続具10を挿入し、前記円筒部材11の縫合用の貫通孔13a…13aが形成された方の端部が、人工血管20の端部21に位置するように配置する。そして、前記各縫合用の貫通孔13aに縫合糸15…15を通して本接続具10を人工血管20の前記端部21内周に縫着する。これらの作業は、手術開始前に行って、予め本接続具10が縫着された人工血管20を用意しておくことが望ましい。
【0023】
次に、図3に示すように、本接続具10が縫着された人工血管20の前記端部21を生体血管30の端部31内に挿入する。その際、接続具10全体が生体血管30内に収容されるように、人工血管20の端部21と、生体血管30の端部31との位置を調整する。続いて、この生体血管30の外周を縫合糸16…16により縛り付ける。そして、縫合糸16…16で縛り付けた部分を、接続具10の円筒部材11の各周方向溝14に嵌合させる。
【0024】
このように縫合糸16で縛り付けた部分を周方向溝14に嵌合させることにより、生体血管30と人工血管20が互いに密接して抜けにくくなる。加えて、接続具10の円筒部材11は金属部材からなるので、前記縛り付けによる押圧力に対して十分な剛性を保つことができる。このため、生体血管30と人工血管20とを、血液の流通に必要な内径を確保しつつ互いにしっかりと接続でき、生体血管30と人工血管20との接続作業を確実に行うことできる。
【0025】
また、生体血管30の外周を縫合糸16…16により縛り付けて、人工血管20の外周に密接させるようにしたので、生体血管30と人工血管20の接続箇所から血液が漏出するのをより確実に防止できる。更に、術後には、前記貫通孔13a…13a,13b…13bを通して生体組織が前記円筒部材11の内壁にも形成されるため、本接続具10及び人工血管20が自然に生体血管30と一体化するのを促進でき、良好な術後経過を得ることができる。
【0026】
図4には、本発明による人工血管用接続具の別の実施形態が示されている。なお、図1〜3に示した実施例と実質的に同一部分には同符号を付してその説明を省略することにする。
この人工血管用接続具40は、一方の端部41aが他方の端部41bよりも拡径されたテーパ状の円筒部材41を有している。
【0027】
また、円筒部材41の一方の端部外周に沿って設けられた縫合用の貫通孔43aは、他の貫通孔13bに比べて、孔径がやや小さくされ、しかも配列間隔を短くして多数形成されている。なお、円筒部材41の周壁42には、前記実施例と同様に周方向溝14が所定間隔で形成されている。その他の構成は、前記実施例と同様である。
【0028】
この人工血管用接続具40は、前記実施例と同様な方法で使用される。すなわち、接続具40を人工血管の内部に挿入し、縫合用の貫通孔43aが形成された端部を人工血管の端部内周に位置させ、この貫通孔43aに縫合糸を通して、接続具40を人工血管の内周に縫着する。このとき、貫通孔43aが配列間隔を短くして多数形成されているので、縫い目の数を多くして接続具を人工血管にしっかりと縫着することができる。
【0029】
次に、接続具40を縫着した人工血管を生体血管内に挿入し、生体血管の外周を縫合糸で縛り付けて、縛った部分を円筒部材41の周壁42の周方向溝14に嵌合させる。このとき、接続具40は、一方の端部41aが広がったテーパ状をなし、その端部41a側から生体血管内に挿入されるため、生体血管の外周を縛り付けた後に、接続具40及び人工血管が生体血管から一層抜けにくくなる。
【0030】
【発明の効果】
以上説明したように、本発明によれば、接続具が耐腐食性の金属の円筒部材からなるため、生体血管を縛り付ける際の押圧力に十分に対抗できる剛性が付与される。また、この円筒部材に環状の周方向溝が周設されているため、生体血管の外周を縛り付けるときに、縛り付けた部分を上記周方向溝に嵌合させることにより、生体血管の内壁を人工血管の外壁に密着させて抜けることなくしっかりと接続させ、生体血管と人工血管との接合箇所から血液が漏出するのを防止できる。更に、この円筒部材に複数の貫通孔が形成されているため、術後に、この貫通孔を通して生体組織の形成を促し、本接続具と人工血管とが生体血管に一体化するのを促進できるようになる。
【図面の簡単な説明】
【図1】本発明による人工血管用接続具の一実施形態を示す斜視図である。
【図2】同接続具を人工血管内に配置して縫着した状態を示す断面図である。
【図3】同接続具を内周に縫着した人工血管を生体血管内に挿入し、生体血管の外周を縛り付けて接続した状態を示す断面図である。
【図4】本発明による人工血管用接続具の別の実施形態を示す斜視図である。
【符号の説明】
10、40 人工血管用接続具
11、41 円筒部材
12、42 周壁
13a,13b 貫通孔
14 周方向溝
20 人工血管
30 生体血管
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a connecting device for an artificial blood vessel used for connecting an artificial blood vessel to a living blood vessel when a part of the living blood vessel is replaced with an artificial blood vessel.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, for example, in the treatment of an aortic aneurysm, which is one of the thoracic diseases, an operation of replacing a lesion portion with an artificial blood vessel made of polyester fiber fabric or the like has been performed. In this operation, biocompatibility is required so that the artificial blood vessel and the living blood vessel are securely connected so as not to leak blood or the like, and after the operation, the artificial blood vessel is naturally integrated with the living blood vessel.
[0003]
In such an operation, as a connecting tool for connecting an artificial blood vessel and a living blood vessel, for example, Japanese Patent Application Laid-Open No. 6-319755 discloses an artificial blood vessel made of a hollow body made of a synthetic resin and made of a tubular nonporous body. A connecting device for an artificial blood vessel is disclosed, which has a connecting portion with an inner wall, a central portion having a thicker outer peripheral side, and an anastomotic portion with a living blood vessel made of a tubular porous body.
[0004]
When using this artificial blood vessel connecting device, the anastomotic portion is inserted into a living blood vessel and both are sewn together, and the connecting portion is inserted into an artificial blood vessel and the whole is tied from outside with a suture thread. Alternatively, it is prevented from coming off by the pressing force of the artificial blood vessel.
[0005]
[Problems to be solved by the invention]
However, in the artificial blood vessel connecting device disclosed in JP-A-6-319755, a relatively soft synthetic resin must be used in order to be able to sew the living blood vessel at the anastomosis portion, and sufficient rigidity for suturing operation or the like is required. May not be maintained. In addition, the connection with the artificial blood vessel is made of a tubular non-porous body, and the anastomosis with the living blood vessel is a porous body, but it has a structure that does not allow the penetration of living tissue and the like. There was a problem that integration was difficult to progress. Furthermore, because of the structure in which the living blood vessel and the connecting tool are sewn, there is a problem that a gap is easily formed between the flexible living blood vessel and blood leaks easily.
[0006]
Therefore, an object of the present invention is to sufficiently maintain the rigidity at the connection point between the artificial blood vessel and the living blood vessel, to be able to integrate naturally with the living blood vessel, and from the connection point between the living blood vessel and the artificial blood vessel. It is an object of the present invention to provide an artificial blood vessel connecting device capable of reducing blood leakage.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, a first aspect of the present invention is a connecting device for an artificial blood vessel for connecting an artificial blood vessel and a living blood vessel, which comprises a hollow cylindrical member integrally formed of a corrosion-resistant metal material. A plurality of through holes are formed in a peripheral wall of the cylindrical member, and at least one circumferential groove extending in a circumferential direction is formed in an outer periphery of the cylindrical member. Tools.
[0008]
According to a second aspect of the present invention, there is provided the artificial blood vessel connecting device according to the first aspect, wherein the through-hole is formed more in a portion near one end of the cylindrical member.
[0009]
A third aspect of the present invention is the first or second aspect of the present invention, which provides a connection device for an artificial blood vessel in which the cylindrical member has a shape that is tapered toward one end.
[0010]
[Action]
(Action of the Invention)
According to the present invention, the artificial blood vessel connecting device is inserted into the inner circumference of the end of the artificial blood vessel. The connecting device and the artificial blood vessel are sutured by passing a thread through the through hole of the connecting device for artificial blood vessel. The end of the artificial blood vessel is inserted into the inner periphery of the end of the living blood vessel, and the living blood vessel is arranged on the outer periphery of the artificial blood vessel connecting device via the artificial blood vessel. The outer periphery of the living blood vessel is tied with a thread, and the portion tied with the thread at this time is fitted into the circumferential groove of the connector. As a result, the living blood vessel and the artificial blood vessel are firmly connected without falling off. In addition, the through-holes of the artificial blood vessel connecting device help the living tissue to be formed on the inner periphery of the connecting device through the holes, and promote integration of the artificial blood vessel and the connecting device with the living blood vessel.
[0011]
(Effect of each claim)
According to the second aspect of the present invention, since the through hole is close to one end of the cylindrical member and is larger in number than the other portion, the end of the cylindrical member and the artificial blood vessel Can be reliably sewn with the stitches of the sutures shortened.
[0012]
According to the third aspect of the present invention, since one end of the cylindrical member has a shape that is expanded in a tapered shape, the connector is inserted into the inner periphery of the end of the artificial blood vessel and sutured. When the ends of the connecting device and the artificial blood vessel are inserted into the living blood vessel, the artificial blood vessel and the connecting device can be hardly removed from the living blood vessel due to the enlarged end of the connecting device.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
1 to 3 show an embodiment of the artificial blood vessel connecting device according to the present invention. FIG. 1 is a perspective view of the connecting device, FIG. 2 is a cross-sectional view showing a state in which the connecting device is arranged in an artificial blood vessel and sewn, and FIG. It is sectional drawing which shows the state which carried out.
[0014]
As shown in FIG. 1, the artificial blood vessel connecting device 10 is basically constituted by a cylindrical member 11 made of a corrosion-resistant metal material. As the metal material, Ti, SUS, Pt, Au, or an alloy thereof is preferably used. The diameter of the cylindrical member 11 is preferably 12 mm to 24 mm, the length is preferably 10 mm to 30 mm, and the thickness is preferably 0.2 mm to 2 mm.
[0015]
The cylindrical member 11 has a plurality of through holes 13a... 13a and 13b. Of these, the through holes 13a... 13a formed in the circumferential direction at one end of the cylindrical member 11 are used for suturing to the end of the artificial blood vessel 20 through a suture. The remaining through holes 13b... 13b help the living tissue to be formed also on the inner periphery of the connecting device 10.
[0016]
13b are preferably 1 mm to 3 mm in inner diameter, and in particular, the through holes 13b... 13b for forming a living tissue are preferably arranged substantially uniformly over the entire surface of the peripheral wall 12. .
[0017]
When the inner diameter of the through hole is smaller than 1 mm, it is difficult to pass a suture and it is difficult to contribute to the formation of a living tissue.
[0018]
Further, on the surface of the peripheral wall 12 of the cylindrical member 11, circumferential grooves 14... 14 are provided along the circumferential direction. At least one circumferential groove 14 may be provided, but is preferably formed in a plurality of rows at predetermined intervals in the axial direction. A plurality of independent annular grooves may be arranged in the circumferential groove 14, but one or two or more spiral grooves may be formed continuously at a predetermined pitch.
[0019]
The width of the circumferential groove 14 is preferably 0.5 mm to 5 mm, and the depth thereof is preferably 0.5 mm to 2 mm.
[0020]
The surface of the connection device 10, for example, the outer periphery, the inner periphery, or the like, may be coated with a substance that enhances biocompatibility. As the biocompatible substance, gelatin, collagen, fluororesin, hydrophilic polymer and the like are preferably used.
[0021]
The artificial blood vessel 20 may be made of a material that is flexible and flexible, has excellent shape retention, and has good biocompatibility and antithrombotic properties. For example, a tubular woven or nonwoven fabric made of fibers such as polyethylene terephthalate, or a tube made of a porous body of polytetrafluoroethylene resin is preferably used. The size of the artificial blood vessel 20 may be arbitrarily set according to the application location.
[0022]
Next, a method of using the artificial blood vessel connecting device according to the present invention will be described.
As shown in FIG. 2, the connecting device 10 is inserted into the inner periphery of the end of the artificial blood vessel 20, and the end of the cylindrical member 11 where the through-holes 13 a. It is arranged so as to be located at the end 21. Then, the connecting device 10 is sewn to the inner periphery of the end portion 21 of the artificial blood vessel 20 by passing the sutures 15... 15 through the respective through holes 13 a for suturing. It is desirable that these operations be performed before the operation is started, and that the artificial blood vessel 20 to which the connecting device 10 is sewn be prepared in advance.
[0023]
Next, as shown in FIG. 3, the end 21 of the artificial blood vessel 20 to which the present connecting device 10 is sewn is inserted into the end 31 of the living blood vessel 30. At this time, the positions of the end 21 of the artificial blood vessel 20 and the end 31 of the living blood vessel 30 are adjusted so that the entire connector 10 is housed in the living blood vessel 30. Subsequently, the outer periphery of the living blood vessel 30 is bound with sutures 16. Then, the portions tied with the sutures 16... 16 are fitted into the respective circumferential grooves 14 of the cylindrical member 11 of the connector 10.
[0024]
By fitting the portion tied up with the suture 16 into the circumferential groove 14 in this manner, the living blood vessel 30 and the artificial blood vessel 20 are in close contact with each other and are hardly removed. In addition, since the cylindrical member 11 of the connecting device 10 is made of a metal member, sufficient rigidity can be maintained against the pressing force due to the binding. For this reason, the living blood vessel 30 and the artificial blood vessel 20 can be firmly connected to each other while securing the inner diameter required for blood circulation, and the connection work between the living blood vessel 30 and the artificial blood vessel 20 can be reliably performed.
[0025]
In addition, the outer periphery of the living blood vessel 30 is tied with the sutures 16... 16 so as to be in close contact with the outer periphery of the artificial blood vessel 20, so that leakage of blood from the connection point between the living blood vessel 30 and the artificial blood vessel 20 is more reliably achieved. Can be prevented. Further, after the operation, the living tissue is also formed on the inner wall of the cylindrical member 11 through the through holes 13a, 13a, 13b, 13b, so that the connecting device 10 and the artificial blood vessel 20 are naturally integrated with the living blood vessel 30. Can be promoted, and a good postoperative course can be obtained.
[0026]
FIG. 4 shows another embodiment of the artificial blood vessel connecting device according to the present invention. The same parts as those in the embodiment shown in FIGS. 1 to 3 are denoted by the same reference numerals, and description thereof will be omitted.
The artificial blood vessel connecting device 40 has a tapered cylindrical member 41 whose one end 41a is larger in diameter than the other end 41b.
[0027]
Further, the through-holes 43a for suturing provided along the outer periphery of one end of the cylindrical member 41 have a slightly smaller hole diameter than the other through-holes 13b, and are formed in large numbers with a shorter arrangement interval. ing. The circumferential grooves 14 are formed at predetermined intervals on the peripheral wall 42 of the cylindrical member 41 as in the above-described embodiment. Other configurations are the same as those of the above embodiment.
[0028]
This artificial blood vessel connecting device 40 is used in the same manner as in the above embodiment. That is, the connecting tool 40 is inserted into the artificial blood vessel, the end where the through-hole 43a for suturing is formed is located on the inner periphery of the end of the artificial blood vessel, and the connecting tool 40 is passed through the through-hole 43a by passing a suture. Sew on the inner circumference of the artificial blood vessel. At this time, since a large number of through holes 43a are formed with a short arrangement interval, the number of stitches can be increased and the connecting device can be securely sewn to the artificial blood vessel.
[0029]
Next, the artificial blood vessel to which the connecting tool 40 is sewn is inserted into the living blood vessel, the outer circumference of the living blood vessel is tied with a suture, and the tied part is fitted into the circumferential groove 14 of the peripheral wall 42 of the cylindrical member 41. . At this time, the connecting tool 40 has a tapered shape in which one end 41a is widened and is inserted into the living blood vessel from the end 41a side. Blood vessels are less likely to fall out of living blood vessels.
[0030]
【The invention's effect】
As described above, according to the present invention, since the connecting device is formed of the corrosion-resistant metal cylindrical member, rigidity sufficient to withstand the pressing force when binding the living blood vessel is provided. Further, since an annular circumferential groove is provided around the cylindrical member, when the outer periphery of the living blood vessel is tied, the inner wall of the living blood vessel is formed by fitting the tied portion into the circumferential groove. And tightly connected to the outer wall of the blood vessel without falling off, thereby preventing blood from leaking from the joint between the living blood vessel and the artificial blood vessel. Furthermore, since a plurality of through-holes are formed in the cylindrical member, the formation of living tissue can be promoted through the through-holes after the operation, and the integration of the present connecting device and the artificial blood vessel into the living blood vessel can be promoted. Become like
[Brief description of the drawings]
FIG. 1 is a perspective view showing one embodiment of a connecting device for an artificial blood vessel according to the present invention.
FIG. 2 is a cross-sectional view showing a state in which the connecting device is placed in an artificial blood vessel and sewn.
FIG. 3 is a cross-sectional view showing a state in which an artificial blood vessel having the connecting device sewn on the inner circumference is inserted into a living blood vessel, and the outer circumference of the living blood vessel is tied and connected.
FIG. 4 is a perspective view showing another embodiment of the artificial blood vessel connecting device according to the present invention.
[Explanation of symbols]
10, 40 Artificial blood vessel connecting device 11, 41 Cylindrical member 12, 42 Peripheral wall 13a, 13b Through hole 14 Circumferential groove 20 Artificial blood vessel 30 Living blood vessel

Claims (3)

人工血管と生体血管とを接続するための人工血管用接続具において、耐腐食性の金属材料により一体に形成された中空の円筒部材からなり、該円筒部材の周壁には、複数の貫通孔が形成され、該円筒部材の外周には、周方向に沿った少なくとも1つの周方向溝が形成されていることを特徴とする人工血管用接続具。In an artificial blood vessel connecting device for connecting an artificial blood vessel and a living blood vessel, the artificial blood vessel connecting tool is formed of a hollow cylindrical member integrally formed of a corrosion-resistant metal material, and a plurality of through holes are formed in a peripheral wall of the cylindrical member. A connection device for an artificial blood vessel, wherein at least one circumferential groove is formed along an outer circumference of the cylindrical member. 前記貫通孔は、該円筒部材の一方の端部に近接した部分に、より多く形成されている請求項1記載の人工血管用接続具。The connecting device for an artificial blood vessel according to claim 1, wherein the through hole is formed more in a portion close to one end of the cylindrical member. 前記円筒部材が、一方の端部に向けてテーパ状に拡開された形状をなす請求項1又は2記載の人工血管用接続具。The artificial blood vessel connecting device according to claim 1, wherein the cylindrical member has a shape expanded in a tapered shape toward one end.
JP29495897A 1997-10-13 1997-10-13 Vascular prosthesis fitting Expired - Fee Related JP3568756B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012213517A (en) * 2011-03-31 2012-11-08 Mitsubishi Heavy Ind Ltd Inflow conduit and auxiliary artificial heart

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EP1982658A1 (en) * 2007-04-16 2008-10-22 Corlife GbR Vessel connector and kit with applicator for surgery
DE102008039523B4 (en) * 2008-08-23 2011-06-16 S & C Systems Gmbh Blood vessel connection for a vascular prosthesis
CN102499791A (en) * 2011-11-18 2012-06-20 姬尚义 Artery connecting lantern ring and artery connector
CN105434083B (en) * 2015-12-25 2018-08-03 江苏省人民医院 A kind of Easy manual's blood vessel fast joint structure and the application in its artificial blood vessel
CN109091187A (en) * 2017-06-20 2018-12-28 张健 A kind of attachment device of operation artificial blood vessel and aorta and truncus brachiocephalicus blood vessel
TWI739118B (en) * 2018-06-28 2021-09-11 高峰 Support ring for aortic anastomosis

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012213517A (en) * 2011-03-31 2012-11-08 Mitsubishi Heavy Ind Ltd Inflow conduit and auxiliary artificial heart

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