【０００１】0001
【産業上の利用分野】本発明は、血管や気管や食道等の
人体の管の目的箇所に人工血管その他の媒体を導入する
ための装置に関する発明である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for introducing an artificial blood vessel or other medium into a target site of a blood vessel, trachea, esophagus, or other body tube.
【０００２】0002
【従来の技術】現在、例えば、大動脈瘤の治療に当たっ
ては、人工血管を移植することにより行われているのが
現状である。つまり、手術により大動脈瘤に侵されてい
る血管部分を切断除去し、この切断除去した部分に人工
血管を縫合等の手術により接続して移植を行っていた。2. Description of the Related Art Currently, for example, aortic aneurysm is treated by transplanting an artificial blood vessel. In other words, the blood vessel portion affected by the aortic aneurysm is surgically cut and removed, and an artificial blood vessel is connected to the cut and removed portion using sutures or other surgical procedures for transplantation.
【０００３】ところで、大動脈瘤の治療に当たり、上記
のように手術により人工血管を移植する方法は危険率が
高いという問題がある。特に破裂に対する緊急手術はそ
の救命率が落ちるものであり、また、解離性動脈瘤は手
術が難しくて死亡率が高いという問題がある。そこで、
本発明者は手術無しに施工するために用いる人工血管を
開発し、既に特願平２ー３４２４７号として出願してい
る。この人工血管は、人工血管の両端部に弾性を有する
折り曲げ自在なリング状線材部を設けて構成したもので
あり、この人工血管を折り畳んでカテーテル内に挿入し
、例えば足の付け根の股動脈に穿刺して大動脈瘤等の血
管の患部までカテーテルの先端部を送り込み、カテーテ
ルに変形性を有する押し棒を挿入して押し棒によりカテ
ーテル内に折り畳んで挿入した人工血管を押し出してリ
ング状線材部の弾性復元力により復元させて人工血管を
筒状に保形して人工血管の両端部を大動脈瘤などの患部
両側の血管壁に密着させ、血管内部に人工血管を固定さ
せるようにしていた。また、上記のようにして人工血管
を目的位置に残すと、カテーテルは引き抜くものである
。By the way, in the treatment of aortic aneurysms, the method of surgically transplanting an artificial blood vessel as described above has a problem in that the risk rate is high. In particular, emergency surgery for ruptured aneurysms has a low survival rate, and dissecting aneurysms are difficult to operate and have a high mortality rate. Therefore,
The present inventor has developed an artificial blood vessel to be used for construction without surgery, and has already filed an application as Japanese Patent Application No. 2-34247. This artificial blood vessel is constructed by providing elastic ring-shaped wire parts at both ends of the artificial blood vessel, and is folded and inserted into a catheter, for example, into the femoral artery at the base of the leg. The tip of the catheter is punctured and sent to the affected area of the blood vessel such as an aortic aneurysm, a deformable push rod is inserted into the catheter, and the artificial blood vessel that has been folded and inserted into the catheter is pushed out by the push rod, and the ring-shaped wire portion is pushed out. The artificial blood vessel was restored using elastic restoring force to maintain its cylindrical shape, and both ends of the artificial blood vessel were brought into close contact with the blood vessel walls on both sides of an affected area such as an aortic aneurysm, thereby fixing the artificial blood vessel inside the blood vessel. Further, if the artificial blood vessel is left at the target position as described above, the catheter is pulled out.
【０００４】0004
【発明が解決しようとする課題】ところが、上記した人
工血管を装着しようとする血管の患部まで移送して開放
する場合、カテーテル内に人工血管を折り畳んで挿入す
るのが困難であり、また、正確に挿入されていないと押
し棒で簡単且つ正確に押し出すことができないという問
題があり、また、押し棒で押しながら移送するので、押
し棒の先端で人工血管を破損する恐れがあるという問題
があった。[Problems to be Solved by the Invention] However, when transferring the above-mentioned artificial blood vessel to the affected area of the blood vessel to which it is to be inserted and opening it, it is difficult to fold and insert the artificial blood vessel into the catheter, and it is difficult to accurately insert the artificial blood vessel into the catheter. If the artificial blood vessel is not inserted, there is a problem that it will not be possible to push it out easily and accurately with the push rod.Also, since the artificial blood vessel is transferred while being pushed with the push rod, there is a problem that the tip of the push rod may damage the artificial blood vessel. Ta.
【０００５】本発明は、上記した従来例の問題点に鑑み
て発明したものであって、その目的とするところは、血
管や気管や食道等の人体の管の目的箇所に人工血管その
他の媒体を破損することなく簡単且つ確実に移送し、目
的箇所で放出することができ、また、人体の管の内壁の
破損を防止でき、更にまた、カテーテルを併用する時に
はカテーテル内に簡単に媒体を入れることができる人体
に媒体を導入する装置を提供するにある。[0005] The present invention was invented in view of the problems of the conventional art described above, and its purpose is to insert artificial blood vessels or other media into target locations of human body tubes such as blood vessels, tracheas, and esophagus. The medium can be easily and reliably transferred without damage and released at the desired location, and the inner wall of the human body can be prevented from being damaged.Furthermore, when a catheter is used in conjunction with the catheter, the medium can be easily inserted into the catheter. An object of the present invention is to provide a device for introducing a medium into the human body.
【０００６】[0006]
【課題を解決するための手段】本発明の人体に媒体を導
入する装置は、先端部付近に側面窓部１を有したチュー
ブ２と、チューブ２内に挿入されたワイヤー３と、一端
部が側面窓部１付近に固着され且つチューブ２に外嵌さ
れた人体に導入すべき媒体に挿通して側面窓部１におい
てワイヤー３に巻かれる紐４とで構成される。[Means for Solving the Problems] A device for introducing a medium into a human body according to the present invention includes a tube 2 having a side window 1 near its tip, a wire 3 inserted into the tube 2, and a wire 3 having one end. The cord 4 is fixed near the side window 1, is inserted into the medium to be introduced into the human body, and is wound around a wire 3 at the side window 1, which is fitted around the tube 2.
【０００７】また、チューブ２の先端部に柔軟な案内筒
５を連続して設けた構成としてもよいものである。また
、短いチューブ２の先端部に柔軟な短い案内筒５を連続
して設けると共にチューブ２の後端部に柔軟な長い後部
筒６を連続して設けた構成としてもよいものである。[0007] Furthermore, a flexible guide cylinder 5 may be continuously provided at the distal end of the tube 2. Alternatively, a short flexible guide tube 5 may be continuously provided at the distal end of the short tube 2, and a flexible long rear tube 6 may be continuously provided at the rear end of the tube 2.
【０００８】[0008]
【作用】本発明においては、チューブ２に移送しようと
する媒体（例えば人工血管７）を外嵌し、紐４を媒体に
通し、側面窓部１部分においてワイヤー３に紐４を巻い
てワイヤー３により媒体を保持した状態で、チューブ２
を直接あるいはカテーテル８内に挿入した状態で血管９
や気管や食道等の人体の管に差し込んで人体の管の目的
の位置（患部２６）に至らせ、この位置でワイヤー３を
チューブ２に対して引くことで、ワイヤー３の先端が紐
４から外れて紐４による媒体の保持が解除され、この状
態でチューブ２を引くことでチューブ２が媒体から抜け
て媒体を目的箇所に残したままチューブ２を引き抜くこ
とができることになる。カテーテル８内に挿入した場合
には、カテーテル８内にチューブ２を挿入すると紐４に
引かれてチューブ２と共に媒体がカテーテル８内に挿入
されるものであり、カテーテル８を血管や気管や食道等
の人体の管に差し込んで人体の管の目的の位置（患部２
６）に至らせ、この位置でチューブ２をカテーテル８に
対して押すことで紐４に引かれて媒体がカテーテル８の
先端から目的の位置に放出され、この状態でワイヤー３
をチューブ２に対して引くことで、ワイヤー３の先端が
紐４から外れて紐４による媒体の保持が解除され、この
状態でチューブ２を少し引くことでチューブ２が媒体か
ら抜けて媒体を目的箇所に残すことができ、その後、カ
テーテル８を引き抜くものである。[Operation] In the present invention, the medium to be transferred (for example, the artificial blood vessel 7) is fitted onto the tube 2, the string 4 is passed through the medium, and the string 4 is wound around the wire 3 in the side window portion 1. While holding the medium by the tube 2
into the blood vessel 9 directly or by inserting it into the catheter 8.
By inserting the wire 3 into a tube in the human body such as the trachea or esophagus and reaching the target position (affected area 26) of the tube in the human body, and pulling the wire 3 against the tube 2 at this position, the tip of the wire 3 separates from the string 4. When it comes off, the holding of the medium by the string 4 is released, and by pulling the tube 2 in this state, the tube 2 comes off from the medium, and the tube 2 can be pulled out while leaving the medium at the target location. When inserted into the catheter 8, when the tube 2 is inserted into the catheter 8, it is pulled by the string 4 and the medium is inserted into the catheter 8 along with the tube 2, and the catheter 8 is inserted into the blood vessel, trachea, esophagus, etc. Insert it into the human body tube and place it in the desired position of the human body tube (affected area 2).
6), and by pushing the tube 2 against the catheter 8 at this position, the medium is pulled by the string 4 and released from the tip of the catheter 8 to the desired position, and in this state, the wire 3
By pulling against the tube 2, the tip of the wire 3 comes off the string 4, and the holding of the medium by the string 4 is released. In this state, by pulling the tube 2 a little, the tube 2 comes out from the medium and the medium is removed. The catheter 8 can be left in place, and the catheter 8 can then be withdrawn.
【０００９】また、チューブ２の先端部に案内筒５を連
続して設けた構成としたものにおいては、チューブ２を
人体の管内で移動する際に案内筒５の柔軟性によって人
体の管の内壁を傷つけることなく管に沿って移動が可能
となる。また、短いチューブ２の先端部に短い案内筒５
を連続して設けると共にチューブ２の後端部に長い後部
筒６を連続して設けたものにおいては、人体の管に挿入
するに当たり、管の屈曲に対して柔軟な案内筒５及び後
部筒６が容易に沿ってスムーズに移動でき、また案内筒
５及び後部筒６の柔軟さにより人体の管の内壁の破損を
防止することができる。[0009] In addition, in a configuration in which a guide tube 5 is continuously provided at the distal end of the tube 2, when the tube 2 is moved within the human body, the flexibility of the guide tube 5 causes the inner wall of the human body to be moved. can be moved along the tube without damaging the tube. In addition, a short guide tube 5 is attached to the tip of the short tube 2.
In the case where a long rear tube 6 is continuously provided at the rear end of the tube 2, the guide tube 5 and the rear tube 6 are flexible against bending of the tube when inserted into a human body tube. The guide tube 5 and the rear tube 6 can be moved easily and smoothly, and the inner wall of the human body tube can be prevented from being damaged due to the flexibility of the guide tube 5 and the rear tube 6.
【００１０】0010
【実施例】以下本発明を添付図面に示す実施例に基づい
て詳述する。図１には本発明の人体に媒体を導入する装
置の一実施例が示してある。チューブ２は金属製または
金属以外の柔軟な材料で形成してあって変形性を有して
いる。このチューブ２の先端部付近には側面窓部１が開
口してある。チューブ２の側面窓部１の近傍には紐４の
一端部が固着してある。チューブ２内にはワイヤー３が
挿入してある。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail based on embodiments shown in the accompanying drawings. FIG. 1 shows an embodiment of the device for introducing a medium into the human body according to the invention. The tube 2 is made of metal or a flexible material other than metal and has deformability. A side window 1 is opened near the tip of the tube 2. One end of a string 4 is fixed near the side window 1 of the tube 2. A wire 3 is inserted into the tube 2.
【００１１】上記のような構成の人体に媒体を導入する
装置は人体の管の目的位置（患部２６）に移送するのに
使用するのであるが、以下、媒体が人工血管７であり、
人体の管が血管９である場合について本発明の上記装置
の使用例を説明する。人工血管７は図２に示すように、
布、フイルム等により可撓性ある筒状に形成してあり、
この人工血管７にはフレーム３２を取付けて円筒形状を
保持してある。このフレーム３２は人工血管７の両端部
に挿着した弾性を有するリング状線材部１０と、両側の
リング状線材部１０間に架設した連結線材部１１で構成
してあり、必要に応じて両リング状線材部１０間に中間
リング状線材部１２を介在するものである。そして、上
記フレーム３２は立体構造をしている。ここで連結線材
部１１の一例を示すと、連結線材部１１は連結前は略円
状となった弾性線材を用い、この円状となった連結線材
部１１を図３のように両側のリング状線材部１０の間に
配置して固着し、同様にしてリング状線材部１０の周方
向に複数個連結線材部１１を配置して固着し、更に、両
側のリング状線材部１０間に弾性を有する中間リング状
線材部１２を配置して構成してある。中間リング状線材
部１２は部分的に人工血管７に固着し、この中間リング
状線材部１２が上記両側のリング状線材部１０間に架設
した複数の連結線材部１１の外側に位置させて元来円状
であった連結線材部１１を押さえることで図２、図３の
ように楕円状に強制的に変形させてあり、このことによ
り楕円状が円状に戻ろうとする弾性復元力が蓄積される
ことになり、この弾性力が人工血管７を折り曲げても元
の筒状に復元させるばね力となっている。なお、実施例
では連結線材部１１は人工血管７に直接固着しないが、
必要に応じて部分的に固着することも可能である。なお
、図２、図３の実施例では一部の中間リング状線材部１
２（図２、図３において３つの中間リング状線材部１２
のうち真ん中のもの）は連結線材部１１の内側に位置し
て連結線材部１１が人工血管７の内部に食い込まないよ
う保持している。ここで、連結線材部１１と中間リング
状線材部１２とは非固着となっている。上記リング状線
材部１０、連結線材部１１、中間リング状線材部１２は
いずれも弾性復元力が優れた柔軟な材質のもの、例えば
チタンニッケル合金針金等が使用されるが、勿論これに
のみ限定されるものではない。また、リング状線材部１
０、連結線材部１１、中間リング状線材部１２の径は人
工血管７の径に対応して約２０ｍｍ〜３０ｍｍ程度に設
定してある。また、人工血管７の長さは患部に移植すべ
き長さに応じて適宜長さが選択される。上記両端部にリ
ング状線材部１０を装着した人工血管７の一端部の開口
縁の対向する２箇所に糸などにより引っ掛け用輪１３が
形成してある。なお、必要に応じて人工血管７の他端部
の開口縁の対向する２箇所に同様にして糸などにより引
っ掛け用輪１３ａを設けてもよい。この場合、引っ掛け
用輪１３ａの位置は引っ掛け用輪１３に対して人工血管
７の周方向において９０°ずれて位置している。The device configured as described above for introducing a medium into the human body is used to transfer the medium to the target position (affected area 26) in a tube of the human body.Hereinafter, the medium is an artificial blood vessel 7,
An example of the use of the above-mentioned device of the present invention will be described in the case where the vessel in the human body is a blood vessel 9. As shown in FIG. 2, the artificial blood vessel 7 is
It is formed into a flexible cylindrical shape from cloth, film, etc.
A frame 32 is attached to this artificial blood vessel 7 to maintain its cylindrical shape. This frame 32 is composed of an elastic ring-shaped wire section 10 inserted into both ends of the artificial blood vessel 7, and a connecting wire section 11 installed between the ring-shaped wire sections 10 on both sides. An intermediate ring-shaped wire portion 12 is interposed between the ring-shaped wire portions 10. The frame 32 has a three-dimensional structure. Here, to show an example of the connecting wire rod section 11, the connecting wire rod section 11 uses an elastic wire rod that is approximately circular in shape before connection, and the connecting wire rod section 11 that has become circular is connected to rings on both sides as shown in FIG. A plurality of connecting wire rod parts 11 are similarly arranged and fixed in the circumferential direction of the ring-shaped wire rod part 10, and further, elastic It is configured by arranging an intermediate ring-shaped wire rod portion 12 having a diameter. The intermediate ring-shaped wire rod section 12 is partially fixed to the artificial blood vessel 7, and the intermediate ring-shaped wire rod section 12 is positioned outside the plurality of connecting wire rod sections 11 installed between the ring-shaped wire rod sections 10 on both sides. By pressing the connecting wire portion 11, which had previously been circular, it is forcibly deformed into an elliptical shape as shown in FIGS. 2 and 3, and as a result, an elastic restoring force is accumulated that tends to return the elliptical shape to a circular shape. This elastic force acts as a spring force that restores the artificial blood vessel 7 to its original cylindrical shape even if it is bent. Note that in the embodiment, the connecting wire portion 11 is not directly fixed to the artificial blood vessel 7;
It is also possible to partially fix it if necessary. In addition, in the embodiments shown in FIGS. 2 and 3, some of the intermediate ring-shaped wire rod parts 1
2 (in FIGS. 2 and 3, three intermediate ring-shaped wire rod parts 12
The middle one) is located inside the connecting wire portion 11 and is held so that the connecting wire portion 11 does not cut into the inside of the artificial blood vessel 7. Here, the connecting wire portion 11 and the intermediate ring-shaped wire portion 12 are not fixed together. The ring-shaped wire rod section 10, the connecting wire rod section 11, and the intermediate ring-shaped wire rod section 12 are all made of flexible materials with excellent elastic restoring force, such as titanium-nickel alloy wire, but are of course limited to these materials. It is not something that will be done. In addition, the ring-shaped wire rod part 1
0. The diameters of the connecting wire portion 11 and the intermediate ring-shaped wire portion 12 are set to approximately 20 mm to 30 mm, corresponding to the diameter of the artificial blood vessel 7. Further, the length of the artificial blood vessel 7 is appropriately selected depending on the length to be transplanted to the affected area. Hooking loops 13 are formed with thread or the like at two opposing locations on the opening edge of one end of the artificial blood vessel 7 with the ring-shaped wire rod portions 10 attached to both ends. Note that, if necessary, hooking rings 13a may be similarly provided at two opposing locations on the opening edge of the other end of the artificial blood vessel 7 using thread or the like. In this case, the position of the hook ring 13a is shifted from the hook ring 13 by 90° in the circumferential direction of the artificial blood vessel 7.
【００１２】しかして、上記の構成の人工血管７を図４
のようにチューブ２に外嵌し、図５のように紐４を人工
血管７の前端部に位置する引っ掛け用輪１３に通し、こ
の紐４を更にチューブ２の側面窓部１部分においてワイ
ヤー３に半巻き、又は一回、又は複数回巻き、チューブ
２に挿入したワイヤー３に人工血管７を保持する。この
場合、ワイヤー３の先端を一旦側面窓部１から出して紐
４を巻き、その後再びワイヤー３の先端を側面窓部１か
らチューブ２内に挿入することで簡単に側面窓部１部分
においてワイヤー３に紐４を巻いた状態とすることがで
きるものである。また、この場合、更に、図６のように
紐４に結び目のような膨大部１４を設けておくと紐４が
側面窓部１の縁とワイヤー３との間に挟み込まれてより
正確に紐４の保持ができるものである。また、紐４は図
２１のように複数本設けてもよい。このようにワイヤー
３により媒体である人工血管７を保持した状態で、チュ
ーブ２を直接あるいはカテーテル８内に挿入した状態で
血管９や気管や食道等の人体の管に差し込んで人体の管
の目的の位置（患部）に至らせるのであるが、以下、媒
体である人工血管７をワイヤー３で保持したチューブ２
をカテーテル８に挿入した状態で血管９に挿入する実施
例につき述べる。[0012]The artificial blood vessel 7 having the above structure is shown in FIG.
As shown in FIG. The artificial blood vessel 7 is held on the wire 3 which is wound half a time, once, or multiple times and inserted into the tube 2. In this case, the tip of the wire 3 is once taken out from the side window 1 and the string 4 is wrapped around it, and then the tip of the wire 3 is inserted into the tube 2 from the side window 1 again, so that the wire can be easily inserted into the side window 1. The cord 4 can be wrapped around the cord 3. In this case, if the string 4 is further provided with a knot-like enlarged part 14 as shown in FIG. 6, the string 4 will be caught between the edge of the side window 1 and the wire 3, and the string will be tied more accurately. 4 can be maintained. Further, a plurality of strings 4 may be provided as shown in FIG. 21. With the artificial blood vessel 7 being held as a medium by the wire 3, the tube 2 is inserted directly or inserted into the catheter 8 into a blood vessel 9, trachea, esophagus, or other body tube to determine the purpose of the tube in the human body. Hereinafter, the tube 2 holding the artificial blood vessel 7, which is the medium, with the wire 3 will be shown.
An example in which the catheter 8 is inserted into the blood vessel 9 will be described.
【００１３】チューブ２をカテーテル８に挿入するに当
たり、人工血管７は折り畳んで挿入するのであるが、こ
のカテーテル８の挿入と人工血管７の折り畳み挿入とは
次のようにして行う。図８において１５はカテーテル８
の後端部に設けた逆止弁であって、この逆止弁１５は弾
性膜により形成してあり、弾性膜に孔１７を穿孔してあ
り、通常はこの孔１７は閉塞しているものである。図８
において１８はラッパ状筒であり、先端部に金属筒１９
が連設してある。そして金属筒１９がカテーテル８の後
端部に着脱自在にはめ込んで接続することができるよう
になっている。ラッパ状筒１８は図の実施例では引っ掛
け用輪１３をリング状線材部１０の２等分点に位置させ
たので断面楕円状をしているが、引っ掛け用輪１３をリ
ング状線材部１０の３等分点に位置させた場合は断面三
角形状とし、また、引っ掛け用輪１３をリング状線材部
１０の４等分点に位置させた場合は断面四角形状とする
ものである。そして、図７に示す実施例においては、人
工血管７の先端部の開口縁の対向する２箇所に形成した
引っ掛け用輪１３に前引張用紐２０を通し、また、人工
血管７の他端部の開口縁の対向する２箇所に設けた引っ
掛け用輪１３ａに後引張用紐２１を通し、この後引張用
紐２１の他端を棒状をした把手２２に取付ける。この状
態で、更に、図１１に示すようにチューブ２にバルーン
カテーテル２３を被嵌し、バルーンカテーテル２３の先
端がチューブ２に被嵌した人工血管７の後端から略２〜
３ｃｍ離れた位置に位置させ、この状態でバルーカテー
テル２３の締めつけ具２４を締めつけてバルーンカテー
テル２３をチューブ２と一体に動くようにセットする。When inserting the tube 2 into the catheter 8, the artificial blood vessel 7 is folded and inserted, and the insertion of the catheter 8 and the folded insertion of the artificial blood vessel 7 are carried out as follows. In FIG. 8, 15 is a catheter 8
This is a check valve provided at the rear end, and this check valve 15 is formed of an elastic membrane, and a hole 17 is bored in the elastic membrane, and this hole 17 is normally closed. It is. Figure 8
18 is a trumpet-shaped tube, and a metal tube 19 is attached at the tip.
are installed in succession. The metal tube 19 can be detachably fitted and connected to the rear end of the catheter 8. In the illustrated embodiment, the trumpet-shaped tube 18 has an elliptical cross section because the hook ring 13 is located at the bisecting point of the ring-shaped wire portion 10. When the hook ring 13 is located at a point dividing the ring-shaped wire portion 10 into three equal parts, it has a triangular cross section, and when the hook ring 13 is located at a quarter dividing point of the ring-shaped wire portion 10, it has a square cross section. In the embodiment shown in FIG. 7, the front tensioning string 20 is passed through the hook loops 13 formed at two opposing locations on the opening edge of the distal end of the artificial blood vessel 7, and The rear tension string 21 is passed through hook loops 13a provided at two opposing locations on the edge of the opening, and then the other end of the tension string 21 is attached to a rod-shaped handle 22. In this state, the balloon catheter 23 is further fitted into the tube 2 as shown in FIG.
The balloon catheter 23 is positioned at a distance of 3 cm from the tube 2, and in this state, the fastener 24 of the balloon catheter 23 is tightened to set the balloon catheter 23 so that it moves together with the tube 2.
【００１４】次に、ラッパ状筒１８をカテーテル８から
外した状態で、図９、図１０のように引張用紐２０をラ
ッパ状筒１８の後部より挿入して先端の接続筒１９から
前方に導出すると共にチューブ２を一定程度ラッパ状筒
１８内に挿入する。この状態で図１０のように把手２２
で後方へ向く引張力を加えながら前引張用紐２０を前方
に引きながら人工血管７をラッパ状筒１８の大径の入口
１８ａからラッパ状筒１８内に導入する。ここで、前端
のリング状線材部１０を周方向において４等分して、こ
の４等分した仮想の点（またはその付近）を便宜上第１
の点４１１ 、第２の点４２１ 、第３の点４３１ 、
第４の点４４１ 、また後端のリング状線材部１０を周
方向において第１の点４１２ 、第２の点４２２ 、第
３の点４３２ 、第４の点４４２ の４点で４等分し、
前端のリング状線材部１０の第１の点４１１ と第３の
点４３１ とをそれぞれ引っ掛け部１３の取付け部分に
該当させた場合、前端のリング状線材部１０の第１の点
４１１ 及び第３の点４３１ を結んだ線が図７のＢに
示すように略楕円状となった大径の入口１８ａの短径方
向に位置すると共に第２の点４２２ と第４の点４４２
とを結んだ線が該入口１８ａの長径方向に位置するよ
うに（つまり図１０に示すように）セットし、この状態
で前引張用紐２０を引くと、人工血管７の前端のリング
状線材部１０の対向する２点である第１の点４１１ と
第３の点４３１ （ここで、前述のように前端のリング
状線材部１０の第１の点４１１ と第３の点４３１ と
はそれぞれ引っ掛け部１３の取付け部分に該当する）が
前引張用紐２０で引かれるため、前端のリング状線材部
１０は対向する引っ掛け部１３の取付け部分である第１
の点４１１ と第３の点４３１ とが近づくように偏平
に潰されるとともにラッパ状筒１８内を第１の点４１１
と第３の点４３１ が先に引かれるため偏平に潰され
た前端のリング状線材部１０は更に前端のリング状線材
部１０の対向する第２の点４２１ と第４の点４４１
とが後方に位置し且つ第２の点４２１ と第４の点４４
１ とが近づくように折り曲げられながらラッパ状筒１
８内に挿入していくものである。つまり、前端のリング
状線材部１０は図１７のＡの状態から、Ｂの状態に変形
し、更に、Ｃの状態に変形して、引っ掛け部１３部分で
ある第１の点４１１ 及び第３の点４３１ が前向きの
山形の頂となり、第２の点４２１ と第４の点４４１
とが前向きの谷形の底となって、前端のリング状線材部
１０が全体として波状となるものである。この時、更に
、前引張用紐２０を前方に更に引くと、後端のリング状
線材部１０は後引張用紐２１により対向する位置に設け
た引っ掛け部１３ａ部分（この部分が後端のリング状線
材部１０の第２の点４２２ 、第４の点４４２ に該当
する）で後方に引かれているので、後端のリング状線材
部１０は対向する第２の点４２２ 及び第４の点４４２
に該当する引っ掛け部１３ａの取付け部分で後方に引
かれて、同時に人工血管７の前端が前記前引張用紐２０
で前方に引かれるため、後端のリング状線材部１０は第
１の点４１２ と第３の点４３２ とが先にラッパ状筒
１８内に引かれて第１の点４１２ と第３の点４３２
とが近づくように偏平に潰されるとともに対向する第２
の点４２２ と第４の点４４２ とが後方に位置し且つ
第２の点４２２ と第４の点４４２ とが近づくように
折り曲げられながらラッパ状筒１８内に挿入していくも
のである。つまり、後端のリング状線材部１０は図１８
のＡの状態から、Ｂの状態に変形し、更に、Ｃの状態に
変形して、引っ掛け部１３ａ部分である第２の点４２２
と第４の点４４２ とが後向きの山形の頂となり、第
１の点４１２ と第３の点４３２ とが後向きにの谷形
の底となって、後端のリング状線材部１０が全体として
波状となるものである。図１９のＡ、Ｃに上記のように
して折り曲げられる人工血管７の前後両端のリング状線
材部１０と連結環状線材部１１との折り曲げの各過程に
おける変形させられた部材相互の関係が示してある（こ
の図では便宜上、中間リング１２を省略した図面が示し
てある）。すなわち、図１９のＡ→Ｃの順序で折り曲げ
られることになる。このように折り曲げると、連結環状
線材部１１が図１９のＢに示すように略直線状となって
弛むことがないようになっている。図２０に上記のよう
にして折り曲げた人工血管７の折り曲げ状態を示してい
る。このようにして人工血管７をラッパ状筒１８の大径
の入口１８ａから入れて折り畳みながら接続筒１９内に
導入した状態で、上記の前引張用紐２０と後引張用紐２
１とをそれぞれ結び目を外して、一端を引くことにより
引っ掛け部１３及び引っ掛け部１３ａから引き抜くもの
である。Next, with the trumpet-shaped tube 18 removed from the catheter 8, the tension string 20 is inserted from the rear of the trumpet-shaped tube 18 as shown in FIGS. 9 and 10, and is pulled forward from the connecting tube 19 at the tip. At the same time, the tube 2 is inserted into the trumpet-shaped cylinder 18 to a certain extent. In this state, as shown in Figure 10, the handle 22
The artificial blood vessel 7 is introduced into the trumpet-shaped tube 18 from the large-diameter entrance 18a of the trumpet-shaped tube 18 while applying a rearward tensile force and pulling the front tensioning string 20 forward. Here, the ring-shaped wire rod portion 10 at the front end is divided into four equal parts in the circumferential direction, and a virtual point (or its vicinity) divided into four equal parts is set as the first point for convenience.
point 411 , second point 421 , third point 431 ,
The fourth point 441 , and the ring-shaped wire portion 10 at the rear end are equally divided into four points in the circumferential direction by the first point 412 , the second point 422 , the third point 432 , and the fourth point 442 . ,
When the first point 411 and the third point 431 of the ring-shaped wire portion 10 at the front end correspond to the attachment portions of the hook portion 13, the first point 411 and the third point 431 of the ring-shaped wire portion 10 at the front end As shown in FIG. 7B, the line connecting the point 431 is located in the minor axis direction of the large diameter inlet 18a, which is approximately elliptical, and the second point 422 and the fourth point 442.
When the front tension string 20 is pulled in this state, the ring-shaped wire rod at the front end of the artificial blood vessel 7 The first point 411 and the third point 431, which are the two opposing points of the section 10 (here, as described above, the first point 411 and the third point 431 of the ring-shaped wire section 10 at the front end are respectively (corresponding to the attachment part of the hook part 13) is pulled by the front tension cord 20, so the ring-shaped wire rod part 10 at the front end is connected to the first part which is the attachment part of the opposite hook part 13.
The first point 411 is flattened so that the point 411 and the third point 431 approach each other, and the inside of the trumpet-shaped tube 18 is
and the third point 431 are drawn first, so that the ring-shaped wire portion 10 at the front end, which has been flattened, is further drawn at the opposing second point 421 and fourth point 441 of the ring-shaped wire portion 10 at the front end.
are located at the rear, and the second point 421 and the fourth point 44
1 and the trumpet-shaped tube 1 while being bent so that they approach each other.
8. That is, the ring-shaped wire rod portion 10 at the front end is deformed from the state A in FIG. Point 431 is the top of the forward facing chevron, and second point 421 and fourth point 441
is the bottom of the forward-facing valley, and the ring-shaped wire portion 10 at the front end is wavy as a whole. At this time, when the front tension string 20 is further pulled forward, the ring-shaped wire portion 10 at the rear end is attached to the hook portion 13a provided at the opposite position by the rear tension string 21 (this portion is Since the ring-shaped wire rod portion 10 at the rear end is pulled backward at the second point 422 and the fourth point 442 of the wire rod portion 10, the ring-shaped wire rod portion 10 at the rear end is pulled backward at the opposite second point 422 and the fourth point 442 442
At the same time, the front end of the artificial blood vessel 7 is pulled backward by the attachment part of the hook part 13a corresponding to the front tension string 20.
Therefore, the ring-shaped wire member 10 at the rear end is pulled into the trumpet-shaped tube 18 first so that the first point 412 and the third point 432 are pulled forward. 432
The second part is flattened so that the two parts approach each other, and the second
It is inserted into the trumpet-shaped tube 18 while being bent so that the point 422 and the fourth point 442 are located at the rear, and the second point 422 and the fourth point 442 are brought closer to each other. In other words, the ring-shaped wire rod portion 10 at the rear end is shown in FIG.
The second point 422, which is the hook portion 13a, is deformed from the state A to the state B, and further deformed to the state C.
and the fourth point 442 are the peaks of the backward-facing chevron, and the first point 412 and the third point 432 are the bottoms of the backward-facing valley, so that the ring-shaped wire portion 10 at the rear end is shaped as a whole. It is wavy. FIGS. 19A and 19C show the relationship between the deformed members in each bending process between the ring-shaped wire portion 10 and the connecting annular wire portion 11 at both the front and rear ends of the artificial blood vessel 7 that is bent as described above. (For convenience, this figure omits the intermediate ring 12.) That is, it is folded in the order of A→C in FIG. 19. When bent in this manner, the connecting annular wire rod portion 11 becomes substantially straight as shown in FIG. 19B, so that it will not loosen. FIG. 20 shows the state of the artificial blood vessel 7 bent as described above. In this manner, the artificial blood vessel 7 is inserted from the large-diameter entrance 18a of the trumpet-shaped tube 18 and introduced into the connecting tube 19 while being folded.
1 and 1 are each untied and pulled out from the hook portion 13 and the hook portion 13a by pulling one end.
【００１５】一方、カテーテル８をあらかじめ例えば足
の付け根の股動脈に穿刺して大動脈瘤等の血管９の患部
２６までカテーテル８の先端部を送り込んでおく。この
場合、カテーテル８の先端部を目的部位である患部の少
し先まで位置するように差し込むものである。次に、金
属筒１９をカテーテル８の後端部に設けた逆止弁１６で
ある弾性膜の孔１７に差込み、この状態で、該ワイヤー
３を挿入したチューブ２をカテーテル８内に差し込み、
該ワイヤー３を挿入したチューブ２の先端を図１２のよ
うにカテーテル８の先端に位置させてワイヤー３に保持
した人工血管７をチューブ２内の先端部の目的位置に位
置させる。ここで、ワイヤー３を挿入したチューブ２を
そのままの位置に残したまま図１２→図１３のように引
き抜いていくと、カテーテル８内に折り畳まれて挿入さ
れていた人工血管７はその前端部から開きながら図１３
→図１４Ａ→図１４Ｂの順序で血管９内に放出される。放出された人工血管７はリング状線材部１０及び連結環
状線材部１１の弾性復元力により筒状に復元して血管９
内壁に圧接するものである。放出位置が悪ければ人工血
管７を保持しているチューブ２を前後移動させて人工血
管７の位置調整をする。次に、締め付け具２４の締め付
けを解除してバルーンカテーテル２３とチューブ２との
結合を解除し、バルーンカテーテル８をチューブ２に沿
って人工血管７内へ押し進め、その先端を図１５に示す
ように人工血管７の先端に到るまで進める。ここで、バ
ルーンカテーテル２３を図１５の一点鎖線のように膨張
させて、人工血管７を完全に拡張して血管９内壁に固定
させる。上記人工血管７の固定が終わると、バルーンカ
テーテル２３を収縮させて抜取る。そして、人工血管７
が血管９内壁に固定されたことを確認した後、図１６の
ようにチューブ２に対してワイヤー３を引くとワイヤー
３の先端がチューブ２の側面窓部１よりも後退した時に
側面窓１部分でワイヤー３に巻いていた紐４がワイヤー
３から外れる。この状態で、チューブ２を引くと、紐４
が引っ掛け部１３から外れ、人工血管７のみを血管９の
所定位置に残してチューブ２が引き出されるのである。On the other hand, the catheter 8 is previously punctured into, for example, the femoral artery at the base of the leg, and the tip of the catheter 8 is delivered to the affected area 26 of the blood vessel 9 such as an aortic aneurysm. In this case, the tip of the catheter 8 is inserted so that it is positioned slightly beyond the target site, which is the affected area. Next, the metal tube 19 is inserted into the hole 17 of the elastic membrane, which is the check valve 16 provided at the rear end of the catheter 8, and in this state, the tube 2 into which the wire 3 has been inserted is inserted into the catheter 8.
The tip of the tube 2 into which the wire 3 has been inserted is positioned at the tip of the catheter 8 as shown in FIG. 12, and the artificial blood vessel 7 held by the wire 3 is positioned at the desired position at the tip inside the tube 2. Here, when the tube 2 into which the wire 3 has been inserted is left in the same position and pulled out as shown in FIG. 12 → FIG. Figure 13 while opening
It is released into the blood vessel 9 in the order of →Fig. 14A →Fig. 14B. The released artificial blood vessel 7 is restored to a cylindrical shape by the elastic restoring force of the ring-shaped wire portion 10 and the connecting annular wire portion 11, and the blood vessel 9 is restored.
It is pressed against the inner wall. If the release position is incorrect, the tube 2 holding the artificial blood vessel 7 is moved back and forth to adjust the position of the artificial blood vessel 7. Next, the tightening device 24 is released to release the connection between the balloon catheter 23 and the tube 2, and the balloon catheter 8 is pushed along the tube 2 into the artificial blood vessel 7, and its tip is inserted into the artificial blood vessel 7 as shown in FIG. Proceed until you reach the tip of the artificial blood vessel 7. Here, the balloon catheter 23 is inflated as shown by the dashed line in FIG. 15 to completely expand the artificial blood vessel 7 and fix it to the inner wall of the blood vessel 9. When the artificial blood vessel 7 is fixed, the balloon catheter 23 is deflated and removed. And artificial blood vessel 7
After confirming that the wire 3 is fixed to the inner wall of the blood vessel 9, as shown in FIG. The string 4 that was wrapped around the wire 3 will come off from the wire 3. In this state, when the tube 2 is pulled, the string 4
is removed from the hook 13, and the tube 2 is pulled out, leaving only the artificial blood vessel 7 at a predetermined position in the blood vessel 9.
【００１６】上記実施例ではバルーンカテーテル２３を
用いた実施例を示したが、バルーンカテーテル２３を用
いないで、人工血管７の弾性復元力のみで人工血管７を
血管９の内壁に圧接するようにしてもよい。次に、図２
２に基づいて本発明の他の実施例につき説明する。この
実施例においては、チューブ２の先端部に柔軟な案内筒
５を連続して設けたものである。ここで案内筒５は柔軟
な金属やポリエチレン等の合成樹脂により形成したコイ
ルやあるいは柔軟な合成樹脂やゴムにより形成した筒で
ある。このように、チューブ２の先端部に柔軟な案内筒
５を連続して設けたのはチューブ２先端が血管９の内壁
を損傷しないようにするための工夫である。In the above embodiment, the balloon catheter 23 was used, but instead of using the balloon catheter 23, the artificial blood vessel 7 was brought into pressure contact with the inner wall of the blood vessel 9 using only the elastic restoring force of the artificial blood vessel 7. You can. Next, Figure 2
Another embodiment of the present invention will be described based on No. 2. In this embodiment, a flexible guide tube 5 is continuously provided at the tip of the tube 2. Here, the guide tube 5 is a coil made of flexible metal or synthetic resin such as polyethylene, or a tube made of flexible synthetic resin or rubber. The reason why the flexible guide tube 5 is continuously provided at the distal end of the tube 2 in this way is to prevent the distal end of the tube 2 from damaging the inner wall of the blood vessel 9.
【００１７】また、図２３には本発明の更に他の実施例
が示してあり、この実施例においては、短いチューブ２
の先端部に短い案内筒５を連続して設けると共にチュー
ブ２の後端部に長い後部筒６を連続して設けたものであ
り、短い案内筒５及び長い後部筒６はいずれも柔軟な金
属やポリエチレン等の合成樹脂により形成したコイルや
あるいは柔軟な合成樹脂やゴムにより形成した筒で構成
してある。このように、チューブ２の前端部に柔軟な短
い案内筒５を連続させると共にチューブ２の後端部に柔
軟な後部筒６を連続させることで、血管９に挿入するに
当たり、血管９の屈曲に対して柔軟な案内筒５及び後部
筒６が容易に沿ってスムーズに移動でき、また案内筒５
及び後部筒６の柔軟さにより血管９の内壁の破損を防止
するものである。FIG. 23 shows still another embodiment of the present invention, in which a short tube 2
A short guide tube 5 is continuously provided at the tip of the tube 2, and a long rear tube 6 is continuously provided at the rear end of the tube 2. Both the short guide tube 5 and the long rear tube 6 are made of flexible metal. It is composed of a coil made of synthetic resin such as polyethylene or a tube made of flexible synthetic resin or rubber. In this way, by connecting the short flexible guide tube 5 to the front end of the tube 2 and continuing the flexible rear tube 6 to the rear end of the tube 2, the tube 2 can be inserted into the blood vessel 9 without bending. On the other hand, the flexible guide tube 5 and rear tube 6 can easily move along the guide tube 5 and the rear tube 6 smoothly.
The flexibility of the rear tube 6 prevents damage to the inner wall of the blood vessel 9.
【００１８】また、図２４には本発明の人体に媒体を導
入する装置の更に他例が示してある。この実施例におい
ては紐４として図に示すように先端が環状となったもの
を使用してある。そして、この実施例では紐４の先端の
環状となった部分の中に図２４のように側面窓１部分に
おいてワイヤー３を通して挟持するようになっている。FIG. 24 shows still another example of the device for introducing a medium into the human body according to the present invention. In this embodiment, the string 4 used has an annular tip as shown in the figure. In this embodiment, the wire 3 is passed through the ring-shaped end of the string 4 at the side window 1 portion, as shown in FIG. 24, and held there.
【００１９】上記各実施例では、ワイヤー３を挿入した
チューブ２により媒体としての人工血管７を血管に挿入
する例を示したが、本発明にあっては、人工血管７を血
管９内の所定の位置に移送する実施例のもののみに限定
されない。すなわち、人体の気管や食道等の人体の他の
管の目的箇所に媒体を導入するのに利用できる。In each of the above embodiments, an example was shown in which the artificial blood vessel 7 as a medium was inserted into the blood vessel through the tube 2 into which the wire 3 was inserted. The present invention is not limited to the embodiment in which the device is transferred to the location shown in FIG. That is, it can be used to introduce a medium into a target location in other ducts of the human body, such as the trachea or esophagus.
【００２０】[0020]
【発明の効果】本発明にあっては、先端部付近に側面窓
部を有したチューブと、チューブ内に挿入されたワイヤ
ーと、一端部が側面窓部付近に固着され且つチューブに
外嵌された人体に導入すべき媒体に挿通して側面窓部に
おいてワイヤーに巻かれる紐とで構成されているので、
紐を媒体に通し、側面窓部部分においてワイヤーに紐を
巻いてワイヤーにより媒体を保持した状態で、チューブ
を血管や気管や食道等の人体の管に差し込んで人体の管
の目的の位置（患部）に至らせてワイヤーをチューブに
対して引くことで、ワイヤーの先端が紐から外れて紐に
よる媒体の保持が解除され、この状態でチューブを引く
ことでチューブが媒体から抜けて媒体のみを目的箇所に
残したままチューブを引く抜くことができ、簡単な構造
で媒体を人体の管の目的位置に運搬して残置することが
できるものである。[Effects of the Invention] The present invention includes a tube having a side window near its tip, a wire inserted into the tube, and one end of which is fixed near the side window and fitted onto the outside of the tube. It consists of a string that is passed through the medium to be introduced into the human body and wrapped around a wire at the side window.
Pass the string through the medium, wrap the string around the wire at the side window, and hold the medium with the wire. Insert the tube into a body tube such as a blood vessel, trachea, or esophagus, and place the tube in the desired position (affected area). ) and pull the wire against the tube, the tip of the wire will come off the string and the medium will no longer be held by the string, and by pulling the tube in this state, the tube will come out of the medium and only the medium can be used. The tube can be pulled out while leaving it in place, and with a simple structure, the medium can be transported to the desired position in the body tube and left there.
【００２１】また、 チューブの先端部に柔軟な案内
筒を連続して設けたものにおいては、チューブを人体の
管内で移動する際に案内筒の柔軟性によって人体の管の
内壁を傷つけることなく管に沿って移動することができ
るものである。また、短いチューブの先端部に短い案内
筒を連続して設けると共にチューブの後端部に長い後部
筒を連続して設けたものにおいては、人体の管に挿入す
るに当たり、人体の管の屈曲に対して柔軟な案内筒及び
後部筒が容易に沿ってスムーズに移動でき、また案内筒
及び後部筒の柔軟さにより人体の管の内壁の破損を防止
することができるものである。[0021] Furthermore, in a tube in which a flexible guide tube is continuously provided at the distal end of the tube, when the tube is moved inside the human body, the flexibility of the guide tube allows the tube to be moved without damaging the inner wall of the human body. It is something that can be moved along. In addition, when a short tube has a continuous short guide tube at the distal end and a long rear tube at the rear end of the tube, when inserted into the human body, it is difficult to bend the tube. On the other hand, the flexible guide tube and rear tube can be easily moved along and smoothly, and the flexibility of the guide tube and rear tube can prevent damage to the inner wall of the human body tube.
【図１】本発明の人体に媒体を導入する装置の一実施例
の斜視図である。FIG. 1 is a perspective view of an embodiment of a device for introducing a medium into a human body according to the invention;
【図２】同上の装置により運搬しようとする媒体の一例
である人工血管の斜視図である。FIG. 2 is a perspective view of an artificial blood vessel, which is an example of a medium to be transported by the above device.
【図３】同上の人工血管に用いるフレームの斜視図であ
る。FIG. 3 is a perspective view of a frame used in the above artificial blood vessel.
【図４】同上の人工血管をチューブに被嵌した状態の斜
視図である。FIG. 4 is a perspective view of the artificial blood vessel shown above fitted into a tube.
【図５】同上の人工血管の引っ掛け用輪に紐を通すと共
にワイヤーに巻いている状態の斜視図である。FIG. 5 is a perspective view of a state in which a string is passed through a hook ring of the artificial blood vessel and is wound around a wire.
【図６】同上の紐をワイヤーに巻付け完了した状態の斜
視図である。FIG. 6 is a perspective view of a state in which the above cord is completely wrapped around a wire.
【図７】同上のラッパ状筒を示す図面で、Ａは斜視図、
ＢはＡのＸーＸ線断面図であり、ＣはＡのＹーＹ線断面
図である。FIG. 7 is a drawing showing the same trumpet-shaped tube as above, where A is a perspective view;
B is a cross-sectional view of A along the line X--X, and C is a cross-sectional view of A along the line Y-Y.
【図８】同上の前後の引っ掛け用輪に前引張用紐と後引
張用紐を通した状態の斜視図である。FIG. 8 is a perspective view of the front tension string and the rear tension string passed through the front and rear hook rings of the same as above.
【図９】同上のラッパ状筒に人工血管を挿入する前の状
態の斜視図である。FIG. 9 is a perspective view of the state before the artificial blood vessel is inserted into the trumpet-shaped tube same as above.
【図１０】同上のラッパ状筒に人工管を挿入する前の状
態のバルーンカテーテルのチューブへの被嵌状態の一部
省略した斜視図である。FIG. 10 is a partially omitted perspective view of the balloon catheter fitted into the tube before the artificial tube is inserted into the trumpet-shaped tube.
【図１１】同上のラッパ状筒に人工血管を挿入する直前
の状態の斜視図である。FIG. 11 is a perspective view of the state immediately before inserting the artificial blood vessel into the trumpet-shaped tube same as above.
【図１２】同上の血管に挿入したカテーテル内にチュー
ブを挿入している状態の断面図である。FIG. 12 is a sectional view showing a state in which a tube is inserted into the catheter inserted into the same blood vessel as above.
【図１３】同上のチューブを残してカテーテルを引き始
めた状態の断面図である。FIG. 13 is a cross-sectional view of a state in which the catheter is started to be pulled, leaving the same tube as above.
【図１４】同上のカテーテルを引く状態の説明図で、Ａ
は途中まで引いた状態の断面図であり、Ｂは完全に引い
た状態の断面図である。FIG. 14 is an explanatory diagram of the state in which the same catheter is pulled;
B is a cross-sectional view of a partially pulled out state, and B is a cross-sectional view of a completely pulled out state.
【図１５】同上のバルーンカテーテルを人工管内に移動
させた状態の断面図である。FIG. 15 is a sectional view of the balloon catheter same as above moved into the artificial tube.
【図１６】同上のチューブに対してワイヤーを引いてワ
イヤーから紐の巻付けを解除した状態の拡大斜視図であ
る。FIG. 16 is an enlarged perspective view of the tube in which the wire is pulled to release the string from the wire.
【図１７】同上の前のリング状線材部を折り曲げる順序
を示す説明図である。FIG. 17 is an explanatory diagram showing the order of bending the front ring-shaped wire portion same as above.
【図１８】同上の後のリング状線材部を折り曲げる順序
を示す説明図である。FIG. 18 is an explanatory diagram showing the order of bending the ring-shaped wire portion after the same as above.
【図１９】同上の前後のリング状線材部及び連結環状線
材部の折り曲げ順序を示す説明図であり、Ａは折り曲げ
前を示し、Ｂは折り曲げ後を示している。FIG. 19 is an explanatory diagram showing the order of folding the front and rear ring-shaped wire rod portions and the connecting annular wire rod portions same as above, where A shows the state before bending and B shows the state after bending.
【図２０】同上の人工血管を折り曲げた状態の斜視図で
ある。FIG. 20 is a perspective view of the artificial blood vessel same as above in a bent state.
【図２１】本発明の他の実施例の斜視図である。FIG. 21 is a perspective view of another embodiment of the invention.
【図２２】本発明の更に他の実施例の斜視図である。FIG. 22 is a perspective view of yet another embodiment of the invention.
【図２３】本発明の更に他の実施例の斜視図である。FIG. 23 is a perspective view of yet another embodiment of the invention.
【図２４】本発明の更に他の実施例の斜視図である。FIG. 24 is a perspective view of yet another embodiment of the invention.
１ 側面窓部２ チューブ３ ワイヤー４ 紐５ 案内筒６ 後部筒1 Side window part2 Tube3 Wire4 String5 Guide tube6 Rear tube
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3014279AJPH066125B2 (en) | 1991-02-05 | 1991-02-05 | Device for introducing a medium into the human body |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3014279AJPH066125B2 (en) | 1991-02-05 | 1991-02-05 | Device for introducing a medium into the human body |
| Publication Number | Publication Date |
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| JPH04322665Atrue JPH04322665A (en) | 1992-11-12 |
| JPH066125B2 JPH066125B2 (en) | 1994-01-26 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3014279AExpired - Fee RelatedJPH066125B2 (en) | 1991-02-05 | 1991-02-05 | Device for introducing a medium into the human body |
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