JPS63300773A - Preparation of balloon catheter - Google Patents
Preparation of balloon catheterInfo
- Publication number
- JPS63300773A JPS63300773A JP62136354A JP13635487A JPS63300773A JP S63300773 A JPS63300773 A JP S63300773A JP 62136354 A JP62136354 A JP 62136354A JP 13635487 A JP13635487 A JP 13635487A JP S63300773 A JPS63300773 A JP S63300773A
- Authority
- JP
- Japan
- Prior art keywords
- cuff
- shaft
- coagulant
- balloon
- liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000007788 liquid Substances 0.000 claims abstract description 29
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 24
- 239000000701 coagulant Substances 0.000 claims abstract description 21
- 239000004816 latex Substances 0.000 claims abstract description 20
- 229920000126 latex Polymers 0.000 claims abstract description 20
- 230000015271 coagulation Effects 0.000 claims abstract description 6
- 238000005345 coagulation Methods 0.000 claims abstract description 6
- 230000032798 delamination Effects 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims 1
- 239000010410 layer Substances 0.000 abstract description 10
- 239000011229 interlayer Substances 0.000 abstract description 5
- 239000011247 coating layer Substances 0.000 abstract 1
- 230000001737 promoting effect Effects 0.000 abstract 1
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical group [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 description 8
- 230000002485 urinary effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000007598 dipping method Methods 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical group O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 235000015115 caffè latte Nutrition 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002504 physiological saline solution Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
Landscapes
- Media Introduction/Drainage Providing Device (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はバルーンカテーテルに於て、バルーンとなるカ
フを形成するバルーンカテーテルの製造方法に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for manufacturing a balloon catheter, which forms a cuff that becomes a balloon.
（従来の技術及びその問題点）
以下の説明に於て、「カフ」とは導尿腔とバルーン腔と
を具えたカテーテルのシャツ１〜の先端側に、シャフト
を一周して形成される弾力性のある伸縮自由な筒状部の
ことであって、該カフが膨らんだものを「バルーン」と
定義する。(Prior art and its problems) In the following explanation, the term "cuff" refers to the elasticity formed around the shaft on the distal end side of the shirt 1 of the catheter, which has a urinary cavity and a balloon cavity. A cylindrical part that has elasticity and can be freely expanded and contracted, and a cuff that is inflated is defined as a "balloon".
留置導尿用バルーンカテーテルは、第１図に示す如くシ
ャフト（１）の先端側にカフ（２）を形成し、シャフト
（１）の肉厚中に形成されたバルーン腔（１２）から生
理食塩水を注入してカフ（２）を膨らませてバルーン（
２１）を形成し、体内に留置するのである。As shown in Fig. 1, the indwelling balloon catheter for urinary drainage has a cuff (2) formed at the distal end of a shaft (1), and physiological saline is injected from the balloon cavity (12) formed in the thick wall of the shaft (1). Fill the cuff (2) with water and inflate the balloon (
21) is formed and placed in the body.
カフ（２）を形成するには、第６図に示す様に予めバル
ーン孔（１３）を開設しなジャ７）〜（１）に、シャフ
ト（１）とは別体に形成され両端が開口したゴム質の薄
肉筒体く２０）をバルーン孔（１３）上Ｉ＼袋装着る方
法が採用されている。To form the cuff (2), as shown in Fig. 6, balloon holes (13) must be made in advance in the jaws 7) to (1), which are formed separately from the shaft (1) and open at both ends. A method is adopted in which a thin-walled rubber cylinder (20) is attached over the balloon hole (13).
筒体く２０）をシャフト・（］）に装着する場合、第７
図の如く筒体（２０）の両端を接着片■（５）で固定す
る方法と、第８図ヅ）如く、筒体く２０）を包む様にラ
テックス液（６）をディッピングにより塗布する方法と
がある。When installing the cylindrical body 20) on the shaft (]), the seventh
As shown in the figure, both ends of the cylinder (20) are fixed with adhesive strips (5), and as shown in Figure 8 (ㅅ), the latex liquid (6) is applied by dipping so as to wrap around the cylinder (20). There is.
第７図の場合、筒体（２０）の端部を一周して接着剤（
５）を塗布する際に気泡を含みやすく、又接着むらによ
る接着不良が生じてバルーンが接着部分から破裂するこ
とがあった。In the case of Fig. 7, the adhesive (
When applying 5), air bubbles were likely to be included, and poor adhesion occurred due to uneven adhesion, resulting in the balloon bursting from the bonded area.
第８図の場合、筒体（２０）を嵌めたシャフト（１）を
ディッピング層に浸りる際、筒体（２０）の端部に気泡
を巻き込みやすく、更にラテックス液の表面弓長力によ
ってラテックス？夜がシャフト（１）とカフ（２）の外
周部に引っばられ気味となり、筒体（２ｏ）の端部外周
近傍Ｐてはラテフクス液の層が他の部分より薄くて弱く
なる問題があった。In the case of Fig. 8, when the shaft (1) fitted with the cylinder (20) is immersed in the dipping layer, air bubbles are likely to be drawn into the end of the cylinder (20), and furthermore, due to the surface bowing force of the latex liquid, the latex? There is a problem that the layer of Latex liquid near the outer periphery of the end of the cylinder body (2o) becomes thinner and weaker than in other parts, as the night tends to be pulled by the outer periphery of the shaft (1) and cuff (2). Ta.
そこで出願人は第５図の如く、カフ（２〉を形成すべき
部分に、前記の様な筒体を被せることなで、シ・ヤフ１
−（１）にラテ・ソクスン夜（６）をディ・ソピンクに
より塗布し、固化させてカフ（２）を形成する方法を試
みた。Therefore, as shown in FIG.
- We tried a method of applying Latte Soksunya (6) to (1) using di-sopink and solidifying it to form the cuff (2).
この場き、形成すＩ＼きカフ（２）がシャフト（１）と
−・体に接合しない様にディッピングの前工程で、シャ
フト（１）とカフ（２）との接着を防止するための層間
剥離剤（３）をシャフトに塗布し、その上がらラテック
ス液を塗布しなければならない。At this time, in order to prevent the formed cuff (2) from joining the shaft (1) and the body, in the pre-dipping process, a The delamination agent (3) must be applied to the shaft and the latex liquid applied over it.
又、層間剥離剤を塗布した部分は該塗布層の厚みだけ他
の部分よりラテックス層の厚みが薄くなりがちて゛、カ
フ（２）の厚みは薄くなる。In addition, the latex layer in the area coated with the delamination agent tends to be thinner than in other areas by the thickness of the coated layer, and thus the thickness of the cuff (2) becomes thinner.
更に、シャツ１〜（１）は第９図に示す如く、断面は真
円ではなく、カフ（２）を膨らませるバルーン腔（１２
）が通っている部分は全長に亘って膨らんでいる。Furthermore, as shown in FIG. 9, the shirts 1 to (1) have a cross section that is not a perfect circle and has a balloon cavity (12) that inflates the cuff (2).
) is swollen along its entire length.
上記シャツＩ−（１）の先端をラテックス液層に浸けて
引き上げると、ラテックス液（６）の表面張力の作用に
より、シャフト（１）のバルーン腔（１２）側の膨らん
でいる部分は他の部分よりもラテックスめ付着厚みが小
さくなりがちであり、形成されるカフ（２）の肉厚が一
様にならず、膨らませたときに、薄肉のバルーン腔（１
２）側が第１０図の如く、片脚れする問題があった。When the tip of the shirt I-(1) is immersed in the latex liquid layer and pulled up, the bulging part of the shaft (1) on the balloon cavity (12) side is caused by the surface tension of the latex liquid (6). The thickness of the latex attached tends to be smaller than that of the cuff (2), and the thickness of the formed cuff (2) is not uniform, and when inflated, the thin balloon cavity (1
2) There was a problem in which one leg shifted as shown in Figure 10.
（問題点を解決する為の手段）
本発明はカフ形成液に対する凝固剤を、層間剥離剤とと
もにシャフトに塗布することによって液を略均−厚みに
塗布出来、カフの破裂や片脚れを防止出来るバルーンカ
テーテルの製造方法を明らかにするものである。(Means for Solving the Problems) The present invention applies a coagulant for the cuff forming liquid to the shaft together with a delamination agent, thereby making it possible to apply the liquid to a substantially uniform thickness, thereby preventing cuff rupture and one leg slipping. The purpose of this study is to clarify the method for manufacturing a balloon catheter.
本発明は、カフ（２）を形成すべき部分にシャフト（１
）とカフ（２）との接着を防止する層間剥離剤（３）と
、ラテフクス液の如く固まると柔軟で伸縮自由な層を形
成するカフ形成液の凝固を促進する凝固剤（４）とを塗
布し、この上にカフ形成液を塗布することを特徴とする
。According to the present invention, the shaft (1) is attached to the part where the cuff (2) is to be formed.
) and the cuff (2), and a coagulating agent (4) that promotes coagulation of the cuff forming liquid, which forms a flexible and stretchable layer when solidified, such as latex liquid. The cuff-forming liquid is applied on top of the cuff-forming liquid.
一＝４＝
（作用及び効果）
層間剥離剤（３）によってカフ（２）とシャフト（１）
が接着することは防止される。1 = 4 = (Function and Effect) Cuff (2) and shaft (1) by delamination agent (3)
is prevented from adhering.
凝固剤（４）の作用によってカフ形成液はカフ形成部に
付着して直ちに固まるため、従来の様に液の表面張力に
よって液層に局部的に薄い箇所が出来ることはなく、バ
ルーンの破裂や片脚れは生じない
層間剥離剤（３）層の上に凝固剤（４）を塗布し、或は
層間剥離剤（３）と凝固剤（４）を混合してシャフト（
１）に塗布すればよく、従来のカフ形成方法に比べて特
に手間が掛かることもない。Due to the action of the coagulant (4), the cuff-forming liquid adheres to the cuff-forming part and solidifies immediately, so there is no local thinning of the liquid layer due to the surface tension of the liquid as in the case of conventional methods, which prevents balloon rupture and Coagulant (4) is applied on the layer of delamination agent (3) that does not cause one-leg slippage, or the coagulant (4) is mixed with delamination agent (3) and coagulant (4) to form the shaft (
1), and it does not require any particular effort compared to conventional cuff forming methods.
（第１実施例）
導尿腔（１１）とバルーン腔（１２）を形成したバルー
ンカテーテルのシャフト（１）の先端側に、バルーン腔
（１２）に連通ずるバルーン孔（１３）を開設すると共
に第４図の如くカフ形成部を一周して層間剥離剤（３）
を塗布する。(First Example) A balloon hole (13) communicating with the balloon cavity (12) is opened on the distal end side of the shaft (1) of a balloon catheter in which a urinary cavity (11) and a balloon cavity (12) are formed. As shown in Figure 4, apply the delamination agent (3) around the cuff forming part.
Apply.
実施例の層間剥離剤（３）は水和ケイ酸アルミニュウム
であって、水１００部に対して永和ケイ酸アルミニウノ
＼４〜６部を混ぜた層間剥離剤（３）の水分散液を塗布
し、乾燥させるのである。The interlayer release agent (3) in the example is hydrated aluminum silicate, and an aqueous dispersion of the interlayer release agent (3) prepared by mixing 4 to 6 parts of Eiwa aluminum silicate Uno to 100 parts of water was applied. , let it dry.
層間剥離剤（３〉の塗布は、第３図に示す如く、シャフ
ト（１）の先端にカフ形成部グ）下縁に達するゴムキャ
ンプ（７）を被せ、前記層間剥離剤（３）の水分散液を
容れた槽（８）にシャフト（１）をカフ形成部の」二縁
に達する深さに浸ける。To apply the delamination agent (3), as shown in FIG. The shaft (1) is immersed in a tank (8) containing a dispersion liquid to a depth that reaches the two edges of the cuff forming part.
シャフト（１）を槽から引き上げ、次に第４図の如く眉
間３１離剤（３）の塗布層の上に上記と同様の方法によ
り、凝固剤（４）を塗布する。The shaft (1) is pulled up from the tank, and then, as shown in FIG. 4, a coagulant (4) is applied on the coated layer of the glabella 31 release agent (3) in the same manner as described above.
実施例の凝固剤（４）は硝酸カルシウムであって、水１
００部に対して硝酸カルシウム１〜１０部を溶かした液
にシャツ？−（１）を浸けて引き上げ、キャンプを外す
。The coagulant (4) in the example is calcium nitrate, and 1 part water
A shirt in a solution of 1 to 10 parts of calcium nitrate to 00 parts? - Soak (1) and pull it up to remove the camp.
次に、上記シャフト（１）をラテックス液（６）に浸け
て引き上げることを２〜３回繰り返す。Next, the above-mentioned shaft (1) is immersed in the latex liquid (6) and pulled up, which is repeated 2 to 3 times.
カフを形成すべき部分にはラテックス液の凝固を促進す
る凝固剤（４）が塗布されており、ラテックス液が付着
する量は他の部分よりも少し多い。A coagulant (4) that promotes coagulation of the latex liquid is applied to the part where the cuff is to be formed, and the amount of latex liquid attached is slightly larger than that of the other parts.
又、カフを形成すべき部分は凝固剤（４）によって凝固
速度が速く、シャフト（１）の断面形状が、バルーン腔
（１２）側が膨らんでいてもラテックス液の表面張力で
液が導尿腔（１１）の外周側に引っ張られるまでに固ま
り、カフ形成部ではラテックスの厚みは略均−厚みとな
る。In addition, the coagulant (4) has a high coagulation rate in the area where the cuff is to be formed, and even if the cross-sectional shape of the shaft (1) is inflated on the balloon cavity (12) side, the surface tension of the latex liquid will cause the liquid to flow into the urinary cavity. (11) The latex hardens by the time it is pulled toward the outer periphery, and the thickness of the latex at the cuff forming portion becomes approximately uniform.
上記の手順でカフ（２）を形成した後、シャフト（１）
の先端に導尿腔（１１）に連通ずる側孔（１３）を開設
し、更に公知の手順によって口金、バルブ等の１４属品
を取（＝ｆけ、バルーンカテーテルを完成すれば可い。After forming the cuff (2) in the above steps, the shaft (1)
A side hole (13) communicating with the urinary cavity (11) is opened at the tip of the balloon catheter, and 14 accessories such as a cap and a valve are removed using known procedures to complete the balloon catheter.
尚、層間剥離剤（３）及び凝固剤（４）はバルーン腔（
１２）に連通ずるバルーン孔（１３）を開設した後に塗
布するが、バルーン腔（１２）に金型を入れたまま、塗
布作業を行なうため、層間剥離剤及び凝固剤がバルーン
孔（１３）から内部に侵入することはない。Note that the delamination agent (3) and coagulant (4) are applied to the balloon cavity (
The coating is applied after opening the balloon hole (13) that communicates with the balloon hole (12), but since the coating is performed while the mold is placed in the balloon cavity (12), the delaminating agent and coagulant are released from the balloon hole (13). There will be no intrusion inside.
（第２実施例）
導尿腔（１１）とバルーン腔（１２）を形成したシャフ
ト（１）に対して層間剥離剤（３）と凝固剤（４）の混
合液を塗布する。(Second Example) A mixed solution of a delamination agent (3) and a coagulant (4) is applied to a shaft (1) in which a urinary cavity (11) and a balloon cavity (12) are formed.
液は、水１００部に対して、水和ケイ酸アルミニウム４
〜６部、硝酸カルシウム１〜１ｏ部、カフ−
チオン、ノニオン等の界面活性剤０．１〜０．２部を分
散させたものである。The solution is 4 parts of hydrated aluminum silicate per 100 parts of water.
6 parts of calcium nitrate, 1 to 10 parts of calcium nitrate, and 0.1 to 0.2 parts of a surfactant such as cuffion or nonionic.
上記液にシャフト（１）のカフ形成部を浸けて塗布し、
次に前記同様にしてシャフト（１）をラテックス液に浸
けて、カフ形成部にカフ（２）を形成する。Dip and apply the cuff forming part of the shaft (1) in the above liquid,
Next, in the same manner as described above, the shaft (1) is immersed in a latex liquid to form a cuff (2) in the cuff forming portion.
ラテックス液は凝固剤（４）の働きにより、前記同様に
してカフ形成部に一様厚みに付着し、カフ（２）の肉厚
は一様となる。Due to the action of the coagulant (4), the latex liquid adheres to the cuff forming part with a uniform thickness in the same manner as described above, and the thickness of the cuff (2) becomes uniform.
本発明の実施に際し、層間剥離剤（４）は水和ケイ酸ア
ルミニウｌ＼に限定されることはなく、マイカ、タルク
、ホワイトカーボン、不溶性澱粉等の３〜１０％水分散
液を用いることが出来る。In carrying out the present invention, the delaminating agent (4) is not limited to hydrated aluminum silicate, and a 3-10% aqueous dispersion of mica, talc, white carbon, insoluble starch, etc. can be used. I can do it.
又、凝固剤として塩化カルシウムを用いることが出来る
。Additionally, calcium chloride can be used as a coagulant.
本発明は上記実施例に限定されることはなく、特許請求
の範囲で種々の変形が可能である。The present invention is not limited to the above embodiments, and various modifications can be made within the scope of the claims.
第１図はバルーンカテーテルの正面図、第２図は第１図
Ｕ−Ｕ線に沿う断面図、第３図は層間剥離削の塗布手順
の説明図、第４図は本願発明の方法にて形成したカフ部
の断面図、第５図は層間剥離剤をのみを使用した場合の
カフ部の断面図、第６図は従来例の説明図、第７図は従
来例の断面図、第８図は従来例の他の実施例の断面図、
第９図は第８図ＩＸ−ＩＸ線に沿う断面図、第１０図は
バルーンの片膨れ状信の正面図である。Fig. 1 is a front view of the balloon catheter, Fig. 2 is a sectional view taken along the line U-U in Fig. 1, Fig. 3 is an explanatory diagram of the application procedure for delamination, and Fig. 4 is a diagram showing the method of the present invention. 5 is a sectional view of the cuff portion formed using only a delamination agent, FIG. 6 is an explanatory diagram of the conventional example, FIG. 7 is a sectional view of the conventional example, and FIG. 8 is a sectional view of the cuff portion formed. The figure is a sectional view of another embodiment of the conventional example.
FIG. 9 is a cross-sectional view taken along the line IX--IX in FIG. 8, and FIG. 10 is a front view of the balloon's one-sided bulge.
Claims (1)
さって、両端がシャフト（１）に結合しており、膨れる
とバルーンとなるカフ（２）を具えたバルーンカテーテ
ルの製造方法に於て、ラテックス液の如く固まると柔軟
で伸縮自由な層を形成するカフ形成液とシャフト（１）
との接着を防止する層間剥離剤（３）及びカフ形成液の
凝固を促進する凝固剤（４）をシャフト（１）上のカフ
（２）を形成すべき部分に塗布し、次でカフ形成液を塗
布してカフ（２）を形成するバルーンカテーテルの製造
方法。 ［２］シャフト（１）に層間剥離剤（３）を塗布し、該
層間剥離剤層の上に凝固剤（４）を塗布する特許請求の
範囲第１項に記載のバルーンカテーテルの製造方法。 ［３］層間剥離剤（３）を水に分散させた液をシャフト
（１）に塗布する特許請求の範囲第１項又は第２項に記
載のバルーンカテーテルの製造方法。 ［４］層間剥離剤（３）と凝固剤（４）を水に混合し、
これをシャフト（１）に塗布している特許請求の範囲第
１項に記載のバルーンカテーテルの製造方法。[Claims] [1] A cuff (2) is provided on the distal end side of the shaft (1), covers the shaft (1), has both ends connected to the shaft (1), and becomes a balloon when inflated. In the method of manufacturing a balloon catheter, a cuff forming liquid and a shaft (1), which form a flexible and stretchable layer when hardened like a latex liquid, are used.
A delaminating agent (3) to prevent adhesion to the cuff and a coagulant (4) to promote coagulation of the cuff-forming liquid are applied to the part of the shaft (1) where the cuff (2) is to be formed, and then the cuff is formed. A method of manufacturing a balloon catheter in which a cuff (2) is formed by applying a liquid. [2] The method for manufacturing a balloon catheter according to claim 1, wherein a delamination agent (3) is applied to the shaft (1), and a coagulant (4) is applied on the delamination agent layer. [3] The method for manufacturing a balloon catheter according to claim 1 or 2, wherein a solution prepared by dispersing the delamination agent (3) in water is applied to the shaft (1). [4] Mix delamination agent (3) and coagulant (4) in water,
A method for manufacturing a balloon catheter according to claim 1, wherein the coating is applied to the shaft (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62136354A JPS63300773A (en) | 1987-05-29 | 1987-05-29 | Preparation of balloon catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62136354A JPS63300773A (en) | 1987-05-29 | 1987-05-29 | Preparation of balloon catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63300773A true JPS63300773A (en) | 1988-12-07 |
Family
ID=15173224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62136354A Pending JPS63300773A (en) | 1987-05-29 | 1987-05-29 | Preparation of balloon catheter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63300773A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5243033A (en) * | 1975-09-30 | 1977-04-04 | Bosch Gmbh Robert | Fuel injection device |
-
1987
- 1987-05-29 JP JP62136354A patent/JPS63300773A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5243033A (en) * | 1975-09-30 | 1977-04-04 | Bosch Gmbh Robert | Fuel injection device |
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