JPH0613686Y2 - Blood vessel obturator - Google Patents
Blood vessel obturatorInfo
- Publication number
- JPH0613686Y2 JPH0613686Y2 JP1990061068U JP6106890U JPH0613686Y2 JP H0613686 Y2 JPH0613686 Y2 JP H0613686Y2 JP 1990061068 U JP1990061068 U JP 1990061068U JP 6106890 U JP6106890 U JP 6106890U JP H0613686 Y2 JPH0613686 Y2 JP H0613686Y2
- Authority
- JP
- Japan
- Prior art keywords
- blood vessel
- wire
- shape
- diameter
- blood
- 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 - Lifetime
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Description
【考案の詳細な説明】 「産業上の利用分野」 本考案は、例えば動脈瘤や静脈瘤が破裂した場合や脳内
出血した場合に、血管内の血液の流れを一時的に止める
ために用いられる血路閉塞具に関する。[Detailed Description of the Invention] “Industrial field of application” The present invention is used to temporarily stop the flow of blood in a blood vessel, for example, when an aneurysm or a varicose vein is ruptured or intracerebral hemorrhage occurs. Blood circuit obturator.
「従来の技術」 例えば、動脈や静脈が破裂した場合や、脳内出血した場
合などにおいては、多量の出血のために直ちに治療を施
すことができないときがある。このような場合に、血路
閉塞具を用いて血液の流れを一時的に止めてから治療を
施すことが行なわれている。“Prior Art” For example, when an artery or vein is ruptured, or intracerebral hemorrhage occurs, there are cases where immediate treatment cannot be performed due to a large amount of bleeding. In such a case, treatment is performed by temporarily stopping the flow of blood using a blood passage obturator.
このような血路閉塞具として、金属のコイルからなり、
血管内に挿入されたとき、ランダムに絡まることにより
血路を閉塞するようにしたものが知られている。このよ
うな血路閉塞具は、血管内にカテーテルなどのガイドチ
ューブを挿入し、閉塞具をガイドチューブに入れてプッ
シャー等で押し出すだけで挿入でき、血流を止めること
ができるため、迅速かつ確実な止血ができるという利点
を有している。Such a blood vessel obstruction device is made of a metal coil,
It is known that when it is inserted into a blood vessel, it is entangled at random to close the blood path. Such a vascular obstruction device can be inserted simply by inserting a guide tube such as a catheter into a blood vessel, inserting the obstruction device into the guide tube, and pushing it out with a pusher or the like, and the blood flow can be stopped. It has the advantage that hemostasis can be achieved.
このような血路閉塞具の一例として、第３図に示すよう
に、ステンレス等の線材２をコイル状に成形して一次コ
イル２ａとし、この一次コイル２ａをランダムに絡まっ
た状態に成形して二次コイル２ｂとしたものが知られて
いる。As an example of such a blood path obstructing device, as shown in FIG. 3, a wire rod 2 made of stainless steel or the like is formed into a coil shape to form a primary coil 2a, and the primary coil 2a is formed into a randomly entangled state and then formed into a secondary coil. A secondary coil 2b is known.
この血路閉塞具１を血管内に挿入するには、まず、穿刺
針を用いて経皮的に血管内にカテーテルを挿入し、所定
箇所に配置する。次に、そのカテーテル内に血路閉塞具
を挿入して、プッシャー等によって押し出して血管内に
挿入するという方法が採られる。すなわち、第４図に示
すように、血路を閉塞するように絡まった状態にある二
次コイル２ｂを、例えば手で引っ張って第３図中の矢印
方向に引き伸ばして、ほぼ直線状をなす一次コイル２ａ
の状態にし、これをカテーテル４内に挿入する。そし
て、プッシャー５によりカテーテル４の先端から血管３
内に押し出す。閉塞具１は、血管３内に押し出される
と、弾性復元力によって二次コイル２ｂの状態に復帰
し、血管内を閉塞して、血液の流れを止める。In order to insert the blood vessel obstruction device 1 into a blood vessel, first, a catheter is percutaneously inserted into the blood vessel using a puncture needle, and the device is placed at a predetermined position. Then, a method of inserting a blood vessel occluding device into the catheter and pushing out with a pusher or the like to insert into the blood vessel is adopted. That is, as shown in FIG. 4, the secondary coil 2b which is entangled so as to occlude the blood channel is pulled by, for example, a hand and extended in the direction of the arrow in FIG. 3 to form a substantially linear primary coil. 2a
Then, this is inserted into the catheter 4. Then, the pusher 5 is used to remove the blood vessel 3 from the tip of the catheter 4.
Push it out. When the obturator 1 is pushed out into the blood vessel 3, it returns to the state of the secondary coil 2b by the elastic restoring force, obstructs the inside of the blood vessel, and stops the flow of blood.
「考案が解決しようとする課題」 しかしながら、このようなコイルからなる血路閉塞具１
は、二次コイル２ｂを形成したときに管状器官内を十分
に閉塞できるように密に絡まることが要求され、このた
め、一次コイル２ａの長さを十分長いものにする必要が
ある。したがって、第４図に示すように、カテーテル４
内に挿入するときに、二次コイル２ｂを外力によって直
線状に伸ばすと、一次コイル２ａの長さｌがかなり長い
ものとなる。このため、カテーテル４内への挿入が困難
となる一方、コイル２ａをカテーテル４外に押し出すと
きに摩擦抵抗が大きくなり、スムーズに押し出すことが
できなかった。"Problems to be solved by the invention" However, the blood vessel obstruction device 1 including such a coil
Are required to be tightly entangled so that the inside of the tubular organ can be sufficiently closed when the secondary coil 2b is formed. Therefore, the length of the primary coil 2a needs to be sufficiently long. Therefore, as shown in FIG.
When the secondary coil 2b is linearly extended by an external force when it is inserted into the inside, the length 1 of the primary coil 2a becomes considerably long. For this reason, it is difficult to insert the coil 2a into the catheter 4, but when the coil 2a is pushed out of the catheter 4, the frictional resistance is increased and the coil 2a cannot be pushed out smoothly.
このため、実際には、一次コイル２ａを直線状のガイド
管（カートリッジ）に挿入し、このガイド管をカテーテ
ル内に挿入して血管内に導き、ガイド管からプッシャー
によって押し出すようにしている。しかし、この方法で
は、ガイド管が直線状であるため、曲折した血管内には
入りにくく、適用箇所に制限があった。Therefore, in practice, the primary coil 2a is inserted into a linear guide tube (cartridge), the guide tube is inserted into the catheter, guided into the blood vessel, and pushed out by the pusher from the guide tube. However, in this method, since the guide tube is linear, it is difficult to enter the bent blood vessel, and the application site is limited.
したがって、本考案の目的は、カテーテル等の内部に挿
入する際に、直線状に引き伸しても長くならず、形状が
復元されたときに、血管を十分に閉塞することができる
血路閉塞具を提供することにある。Therefore, an object of the present invention is to prevent obstruction of a straight line when inserting it into a catheter or the like, and to fully occlude a blood vessel when the shape is restored. To provide.
「課題を解決するための手段」 上記目的を達成するため、本考案の血路閉塞具のは、体
温より低い温度の変態点をもつ形状記憶合金からなる線
材を複数条のループにし、このループの一箇所で前記線
材を結束して相互に固定したことを特徴とする。[Means for Solving the Problem] In order to achieve the above-mentioned object, the blood vessel obturator of the present invention uses a wire rod made of a shape memory alloy having a transformation point at a temperature lower than body temperature to form a plurality of loops. It is characterized in that the wire rods are bound at one place and fixed to each other.
以下、本考案について更に詳細に説明する。Hereinafter, the present invention will be described in more detail.
本考案においては、ＴｉＮｉ合金などの形状記憶合金か
らなる線材が用いられる。この線材を複数条のループに
し、このループの一箇所で線材を結束して相互に固定す
る。線材は、全体として一本のものを、折り返したり、
多重巻きにして複数条にしてもよく、あるいは複数本の
ものを並べて複数条にしてもよい。これらの線材は、そ
れ自体がコイル状、波状などの形状に記憶処理されてい
ることが好ましい。線材をコイル状、波状などの形状に
成形し、このコイルや波線を更に曲折した形状、例えば
二次コイルをなす形状に記憶処理してもよい。更に、例
えばコイル状をなす線材と波状をなす線材とを組合せて
もよい。なお、線材の形状は、丸線、角線、フラットワ
イヤーのいずれでもよい。In the present invention, a wire made of a shape memory alloy such as TiNi alloy is used. This wire rod is formed into a plurality of loops, and the wire rods are bound at one place of the loop and fixed to each other. For the wire rod, fold one piece as a whole,
Multiple windings may be used to form a plurality of lines, or a plurality of windings may be arranged to form a plurality of lines. It is preferable that the wire itself is memorized in a coil shape, a wavy shape, or the like. The wire material may be formed into a coil shape, a wavy shape, or the like, and the coil or the wavy wire may be further bent, for example, the shape of a secondary coil may be stored. Furthermore, for example, a coil-shaped wire and a wavy wire may be combined. The shape of the wire may be any of round wire, square wire, and flat wire.
形状記憶合金の線材は、上記のような形状に成形した
後、この形状を保持したまま400〜500℃程度で所定時
間、拘束時効処理することによりその形状を記憶させる
ことができ、低温時においては塑性変形し、変態点を超
えて高温になると、記憶された形状に復帰する性質を付
与することができる。なお、この変態点は、血管内に配
置されたときに十分に形状復帰するように、体温よりも
低い温度、好ましくは０〜20℃とされる。Shape-memory alloy wire rods can be memorized after being formed into the shape described above and then subjected to restrained aging treatment at 400 to 500 ° C for a predetermined time while maintaining this shape. Can be given a property of being plastically deformed and returning to a memorized shape when the temperature exceeds the transformation point and reaches a high temperature. The transformation point is set to a temperature lower than the body temperature, preferably 0 to 20 ° C, so that the transformation point is sufficiently restored when the transformation point is placed in the blood vessel.
上記線材を複数条のループ状にして一箇所を結束固定す
る方法としては、プラズマや電子ビームにより溶着する
方法、接着による方法、かしめる方法、ろう付けする方
法、樹脂にディッピングする方法など、各種の方法が採
用できる。この場合、結束固定部は、線材の端部が露出
しないようにし、全体として丸みを帯びて血管の組織を
傷付けないようにすることがより好ましい。As a method of binding and fixing one place in a loop form of a plurality of wires, there are various methods such as welding by plasma or electron beam, bonding, caulking, brazing, dipping into resin, etc. The method of can be adopted. In this case, it is more preferable that the binding and fixing portion not expose the end portion of the wire rod and be rounded as a whole so as not to damage the tissue of the blood vessel.
こうして束ねられた線材は、常温において引き伸ばす、
あるいは集束させたときに、２mm以下の径となり、血管
内に配置されて形状復帰したときに、３〜８mmの径とな
るようにされることが好ましい。引き伸ばした状態で２
mm以下の径であればカテーテル等を用いて血管内に挿入
しやすく、形状復帰した状態で３〜８mmの径となれば血
管を効果的に閉塞することができる。また、個々の線材
の線径は50〜200μｍであることが好ましく、複数条に
した部分の本数は４〜３６本であることが好ましい。The wire thus bundled is stretched at room temperature,
Alternatively, it is preferable that the diameter is 2 mm or less when focused, and the diameter is 3 to 8 mm when the shape is restored by being placed in the blood vessel. 2 in the stretched state
If the diameter is less than or equal to mm, it can be easily inserted into a blood vessel using a catheter or the like, and if the diameter is 3 to 8 mm when the shape is restored, the blood vessel can be effectively occluded. In addition, the wire diameter of each wire is preferably 50 to 200 μm, and the number of the plurality of lines is preferably 4 to 36.
なお、血路閉塞効果を更に高めるため、線材の間にダク
ロン繊維等を絡ませてもよい。In addition, in order to further enhance the blood vessel obstruction effect, Dacron fibers or the like may be entangled between the wire rods.
「作用」 本考案の血路閉塞具は、線材を複数条のループにして一
箇所を結束固定したものからなるので、これを引き伸ば
して集束させても、全体としての長さは比較的短く、し
かも径を小さくすることができる。したがって、第３図
に示したような一次コイル２ａを引き伸ばしたものより
はるかに短くなり、カテーテル等を用いて血管内に挿入
する際の摩擦抵抗も小さくなり、挿入操作が容易とな
る。また、長さが短いので血管の曲折した経路にも入り
やすくなり、適用箇所を自由に選択することができる。[Operation] Since the blood vessel obstruction device of the present invention is composed of a plurality of loops of wire rods that are bundled and fixed at one place, even if they are stretched and focused, the overall length is relatively short, and The diameter can be reduced. Therefore, the primary coil 2a is much shorter than the extended primary coil 2a as shown in FIG. 3, and the frictional resistance when it is inserted into a blood vessel using a catheter or the like is small, which facilitates the insertion operation. Further, since the length is short, it is easy to enter the curved path of the blood vessel, and the application site can be freely selected.
また、本考案の血路閉塞具は、血管内に挿入されると形
状記憶合金の形状復帰作用によって拡径され、血管を効
果的に閉塞することができる。この場合、線材が複数条
のものからなるので、血流を止めるのに十分な線材の密
度も確保される。そして、個々の線材が前記のようにコ
イル状、波状をなすように記憶処理されていれば、形状
復帰したときに線材が互いに複雑に絡み合った形状とな
るので、血路閉塞効果が高められる。Further, the blood vessel obstruction device of the present invention, when inserted into a blood vessel, expands its diameter by the shape restoring action of the shape memory alloy and can effectively obstruct the blood vessel. In this case, since the wire rod is made of a plurality of strips, the density of the wire rod sufficient to stop the blood flow is also secured. If the individual wire rods are stored in the coil or wavy shape as described above, the wire rods are intricately intertwined with each other when the shape is restored, and the blood vessel obstruction effect is enhanced.
「実施例」 第１、２図には本考案による血路閉塞具の一実施例が示
されている。第１図は、血路閉塞具３２が血管３１内に
挿入されて、形状復帰して血路を閉塞している状態を示
している。"Embodiment" FIGS. 1 and 2 show an embodiment of the blood vessel obstruction device according to the present invention. FIG. 1 shows a state in which the blood vessel obstruction device 32 is inserted into the blood vessel 31 and returns to its shape to obstruct the blood vessel.
この血路閉塞具３２は、線材３３を複数条のループに
し、ループの一箇所３４を結束して固定したものであ
る。この場合、管状器官内を損傷させないようにするた
め、結束部３４に例えばラウンドが付されているキャッ
プ等を付けてもよい。また、形状記憶合金の変態点は、
血管内に配置されたとき、十分に形状復帰するように０
〜20℃とされている。The blood path obstruction device 32 is one in which the wire 33 is formed into a plurality of loops, and one portion 34 of the loop is bound and fixed. In this case, in order to prevent the inside of the tubular organ from being damaged, the binding portion 34 may be provided with, for example, a rounded cap or the like. Also, the transformation point of shape memory alloy is
0 to fully restore shape when placed in a blood vessel
It is said to be ~ 20 ℃.
血路閉塞具３２を構成する形状記憶合金の線材３３は、
血管３１内で体温により暖められて形状復帰することに
より、個々の線材３３がループ状をなして拡径し、血管
３１を閉塞する。The shape memory alloy wire 33 that constitutes the blood vessel obstruction device 32 is
By being warmed by the body temperature in the blood vessel 31 and returning to its shape, the individual wire rods 33 form a loop and expand in diameter, thereby closing the blood vessel 31.
また、第２図に示すように、これらの線材３３を引き伸
ばして集束させることにより、その径を細くして血管３
１内に挿入可能な状態にできる。この閉塞具３２では、
線材３３をループ状にしているので、形状復帰したとき
に効果的に拡径し、集束させたときの径は比較的短くで
きる。In addition, as shown in FIG. 2, by stretching and converging these wire rods 33, their diameters are reduced and the blood vessel 3 is formed.
1 can be inserted into the state. With this obturator 32,
Since the wire member 33 has a loop shape, the diameter is effectively expanded when the shape is restored, and the diameter when focused can be relatively short.
なお、形状復帰した線材３３は、波状、コイル状、ラン
ダムに曲折した形状をなすものであってもよい。また、
結束部３４を固定して線材３３を結束する際に、各線材
の間にダクロン繊維等を絡めて止血効果を向上させても
よい。更に、線材３３の本数は、線材３３の線径、適用
箇所などを考慮して適宜変更することができる。The wire material 33 whose shape has been restored may have a wavy shape, a coil shape, or a randomly bent shape. Also,
When the binding portion 34 is fixed and the wires 33 are bound, a Dacron fiber or the like may be entangled between the wires to improve the hemostatic effect. Further, the number of the wire rods 33 can be appropriately changed in consideration of the wire diameter of the wire rods 33, the application place, and the like.
形状記憶合金からなる線材３３には、比較的径の細い線
材が使用され、各線材の径は、50〜200μｍ程度である
ことが好ましい。上記の径よりも太い線材を用いると、
線材３３を結束したときの径が太くなり、カテーテル等
に挿入する際に、挿入が困難となる。一方、上記の径よ
りも細い線材を用いると、各線材の径が細いため、結束
する線材の数をかなり多くしなければ血管内を十分に塞
ぐことができなくなる。A wire having a relatively small diameter is used as the wire 33 made of a shape memory alloy, and the diameter of each wire is preferably about 50 to 200 μm. If you use a wire thicker than the above diameter,
When the wires 33 are bundled, the diameter becomes large, which makes it difficult to insert the wires 33 into a catheter or the like. On the other hand, if a wire rod having a diameter smaller than the above is used, the diameter of each wire rod is small, so that the blood vessel cannot be sufficiently blocked unless the number of wire rods to be bound is considerably increased.
本考案の血路閉塞具３２を血管３１内に挿入する場合に
は、カテーテル等が用いられる。すなわち、穿刺針等を
用いて経皮的に血管内にカテーテルを挿入し、閉塞した
い箇所にカテーテルの先端が到達するように配置する。
この状態でカテーテル内に血路閉塞具３２を挿入して、
プッシャー等によって血路閉塞具３２をカテーテルの外
に押し出して血管３１内に挿入する。血路閉塞具３２が
血管３１内に押し出されると、血路閉塞具３２を構成す
る形状記憶合金からなる各線材３３が体温によって暖め
られることによって所定形状に復帰し、血路を閉塞す
る。A catheter or the like is used to insert the blood vessel obstruction device 32 of the present invention into the blood vessel 31. That is, a catheter is percutaneously inserted into a blood vessel using a puncture needle or the like, and the catheter is arranged so that the tip of the catheter reaches a desired position.
In this state, insert the blood passage obturator 32 into the catheter,
The vascular obstruction device 32 is pushed out of the catheter by a pusher or the like and inserted into the blood vessel 31. When the blood vessel obstruction device 32 is pushed out into the blood vessel 31, the wire rods 33 made of a shape memory alloy that constitute the blood passage obstruction device 32 are warmed by the body temperature to return to a predetermined shape and obstruct the blood passage.
「考案の効果」 以上説明したように、本考案の血路閉塞具によれば、線
材を複数条のループにし、これらのループ一箇所を結
束、固定したので、血管内で形状復帰したときの線材の
密度を高めて、十分な閉塞効果を得ることができる。ま
た、各線材を引き伸ばして集束させることにより、血管
内にカテーテル等を用いて挿入できる程度に径を小さく
でき、しかも長さが比較的短いので、挿入抵抗が少なく
なり、血管の曲折した部分にも挿入することが可能とな
る。[Advantage of Device] As described above, according to the blood vessel obstructing device of the present invention, since the wire rod is formed into a plurality of loops and one of these loops is bound and fixed, the wire rod when the shape is restored in the blood vessel. The density can be increased to obtain a sufficient blocking effect. In addition, by stretching and converging each wire, the diameter can be made small enough to be inserted into a blood vessel using a catheter, etc., and the length is relatively short, so insertion resistance is reduced and it can be applied to a bent portion of the blood vessel. Can also be inserted.
第１図は本考案の血路閉塞具の一実施例を示す概略側面
図、第２図は同血路閉塞具を直線状に引伸した状態を示
す概略側面図、第３図は従来の血路閉塞具の形状復帰し
た状態を示す図、第４図は従来の血路閉塞具を血管内に
挿入する方法を示す説明図である。 図中、３１は血管、３２は血路閉塞具、３３は形状記憶
合金の線材、３４は結束部である。FIG. 1 is a schematic side view showing an embodiment of the blood passage obturator of the present invention, FIG. 2 is a schematic side view showing the blood passage obturator in a linearly stretched state, and FIG. 3 is a conventional blood passage obturator. FIG. 4 is a view showing a state in which the shape is restored, and FIG. 4 is an explanatory view showing a method for inserting a conventional blood vessel obstruction device into a blood vessel. In the figure, 31 is a blood vessel, 32 is a blood vessel obturator, 33 is a shape memory alloy wire rod, and 34 is a binding portion.
Claims (4)
合金からなる線材を複数条のループにし、このループの
一箇所で前記線材を結束して相互に固定したことを特徴
とする血路閉塞具。1. A blood vessel obstruction characterized in that a wire rod made of a shape memory alloy having a transformation point at a temperature lower than body temperature is formed into a plurality of loops, and the wire rods are bound at one place of the loop and fixed to each other. Ingredient
け、樹脂ディッピングから選ばれた少なくとも一種の方
法で相互に固定した請求項１記載の血路閉塞具。2. The vascular obstruction device according to claim 1, wherein the wires are fixed to each other by at least one method selected from welding, adhesion, caulking, brazing, and resin dipping.
記線材を引き伸ばすと２mm以下の径となり、前記変態点
以上の温度で形状復帰すると３〜８mmの径となる請求項
１又は２記載の血路閉塞具。3. The diameter of 2 mm or less when the wire is stretched at a temperature below the transformation point of the shape memory alloy, and the diameter of 3 to 8 mm when the shape is restored at a temperature above the transformation point. Blood vessel obturator.
１〜３のいずれか１つに記載の血路閉塞具。4. The vascular obstruction device according to claim 1, wherein the wire has a diameter of 50 to 200 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990061068U JPH0613686Y2 (en) | 1990-06-08 | 1990-06-08 | Blood vessel obturator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990061068U JPH0613686Y2 (en) | 1990-06-08 | 1990-06-08 | Blood vessel obturator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0420308U JPH0420308U (en) | 1992-02-20 |
| JPH0613686Y2 true JPH0613686Y2 (en) | 1994-04-13 |
Family
ID=31588992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990061068U Expired - Lifetime JPH0613686Y2 (en) | 1990-06-08 | 1990-06-08 | Blood vessel obturator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0613686Y2 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8956389B2 (en) | 2009-06-22 | 2015-02-17 | W. L. Gore & Associates, Inc. | Sealing device and delivery system |
| US9381006B2 (en) | 2009-06-22 | 2016-07-05 | W. L. Gore & Associates, Inc. | Sealing device and delivery system |
| US9808230B2 (en) | 2014-06-06 | 2017-11-07 | W. L. Gore & Associates, Inc. | Sealing device and delivery system |
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| US10278705B2 (en) | 2008-03-07 | 2019-05-07 | W. L. Gore & Associates, Inc. | Heart occlusion devices |
| US10792025B2 (en) | 2009-06-22 | 2020-10-06 | W. L. Gore & Associates, Inc. | Sealing device and delivery system |
| US10828019B2 (en) | 2013-01-18 | 2020-11-10 | W.L. Gore & Associates, Inc. | Sealing device and delivery system |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6123715A (en) | 1994-07-08 | 2000-09-26 | Amplatz; Curtis | Method of forming medical devices; intravascular occlusion devices |
| US8398670B2 (en) | 2004-03-19 | 2013-03-19 | Aga Medical Corporation | Multi-layer braided structures for occluding vascular defects and for occluding fluid flow through portions of the vasculature of the body |
| US20050228434A1 (en) * | 2004-03-19 | 2005-10-13 | Aga Medical Corporation | Multi-layer braided structures for occluding vascular defects |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK151404C (en) * | 1984-05-23 | 1988-07-18 | Cook Europ Aps William | FULLY FILTER FOR IMPLANTATION IN A PATIENT'S BLOOD |
| JPS63206236A (en) * | 1987-02-23 | 1988-08-25 | ２ モスコフスキ ゴスダルストベンニイ メデイツインスキ インステイテユト イメニ エヌ．イ−．ピロゴバ | Filter for vein and operation preparation apparatus and method |
-
1990
- 1990-06-08 JP JP1990061068U patent/JPH0613686Y2/en not_active Expired - Lifetime
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| US12059140B2 (en) | 2007-04-05 | 2024-08-13 | W. L. Gore & Associates, Inc. | Septal closure device with centering mechanism |
| US10278705B2 (en) | 2008-03-07 | 2019-05-07 | W. L. Gore & Associates, Inc. | Heart occlusion devices |
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| US10368853B2 (en) | 2014-06-06 | 2019-08-06 | W. L. Gore & Associates, Inc. | Sealing device and delivery system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0420308U (en) | 1992-02-20 |
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