JPH0639723Y2 - Stepless catheter introducer - Google Patents
Stepless catheter introducerInfo
- Publication number
- JPH0639723Y2 JPH0639723Y2 JP1989075877U JP7587789U JPH0639723Y2 JP H0639723 Y2 JPH0639723 Y2 JP H0639723Y2 JP 1989075877 U JP1989075877 U JP 1989075877U JP 7587789 U JP7587789 U JP 7587789U JP H0639723 Y2 JPH0639723 Y2 JP H0639723Y2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- vasodilator
- sheath tube
- catheter introducer
- introducer
- 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
Links
Description
この考案は血管造影カテーテルを血管内に挿入させる
際、血管の疼痛を無くすることに用いるカテーテルイン
トロジューサーに関する。The present invention relates to a catheter introducer used for eliminating vascular pain when inserting an angiographic catheter into a blood vessel.
この種のカテーテルイントロジューサーとしては、例え
ば第２図に示した構成のものが従来例として周知であ
る。 この従来例におけるカテーテルイントロジューサーは、
血管拡張管2Aに鞘管2Bを外蔽させたものであり、前記血
管拡張管2Aの先端部は長傾斜部2aに形成され、前記鞘管
2Bの先端部は段差を少なくするために傾斜した突掛部2b
が形成されている。そして、該突掛部2bは血管内への挿
入時に抵抗を最小限にするために、出来る丈先鋭状に形
成されている。As this type of catheter introducer, for example, the one shown in FIG. 2 is well known as a conventional example. The catheter introducer in this conventional example is
A vascular dilation tube 2A is covered with a sheath tube 2B, and a distal end portion of the vasodilation tube 2A is formed into a long inclined portion 2a.
The tip of 2B has a slanted hook 2b to reduce the step difference.
Are formed. Then, the hooking portion 2b is formed in a sharp-edged shape so as to minimize resistance during insertion into the blood vessel.
前記従来例における鞘管2Bの突掛部2bは、血管拡張管2A
との段差を無くして抵抗を少なくするために、先鋭状に
形成されているが、血管拡張管2Aを抜き取った後の突掛
部2bは、先鋭状に形成されているがため、血管壁との接
触衝撃痛が生じたり、又先端が薄くなっているので捲れ
ると言う問題点がある。The hook portion 2b of the sheath tube 2B in the conventional example is a vasodilator
In order to eliminate the step and reduce resistance, it is formed in a sharpened shape, but since the protruding portion 2b after extracting the vasodilator 2A is formed in a sharpened shape, There is a problem that the contact impact pain occurs and the tip is thin so that it can be turned up.
前記従来例の課題を解決する具体的手段として本考案
は、鞘管（1B）内に血管拡張管（1A）を挿入し透通させ
るようにした合成樹脂製のカテーテルイントロジューサ
ーであって、前記血管拡張管の先端部は長円錐部（1a）
に形成し、該長円錐部の基部側に段差（1b）を設け、そ
の段差から小管（1D）に形成してその端部をイントロジ
ューサー基（Ｃ）に連結させ、前記鞘管端部を先鋭状に
加工することなくその外径と前記長円錐部の基部側の外
径とを略同一にして実質的に前記鞘管と前記血管拡張管
との段差を無くした構成にしたものである。The present invention is a synthetic resin catheter introducer in which a vasodilator (1A) is inserted into a sheath tube (1B) so as to be permeable, as a specific means for solving the problems of the conventional example. The tip of the vasodilator is a long cone (1a)
And a step (1b) is provided on the base side of the long cone, and a small tube (1D) is formed from the step to connect the end to the introducer group (C), The outer diameter and the outer diameter on the base side of the long conical portion are made substantially the same without being sharpened to substantially eliminate the step between the sheath tube and the vasodilator tube. .
次に本考案を図示の実施例によって詳しく説明すると、
第１図は本考案に係るカテーテルイントロジューサーの
要部のみを拡大して示した断面図である。同図におい
て、1Aは血管拡張管であり1Bは鞘管である。前記血管拡
張管1Aは、その先端が長円錐部1aに形成され、該先端か
ら所定長さ位置において段差1bが形成され、該段差以降
は小管1Dに形成され、該小管の端部はイントロジューサ
ー基Ｃに連結してある。 前記鞘管1Bは前記血管拡張管1Aの小管1Dに被嵌されるも
のであり、鞘管1Bの端部が段差1bに当接するようになっ
ている。この場合に、鞘管1Bはその端部を先細の先鋭状
に加工することなく、その端部の外径と前記長円錐部1a
の基部側の外径とが略一致する大きさにしてあり、長円
錐部1aの基部と鞘管1Bとの間に実質的な段差が生じない
ように形成してある。 このように、長円錐部1aと鞘管1Bの端部との間が実質的
に段無しとなることで、カテーテルイントロジューサー
を血管内に円滑に挿入させることができるのである。Next, the present invention will be described in detail with reference to the illustrated embodiment.
FIG. 1 is an enlarged sectional view showing only a main part of a catheter introducer according to the present invention. In the figure, 1A is a vasodilator and 1B is a sheath tube. The distal end of the vasodilator 1A is formed in a long conical portion 1a, a step 1b is formed at a predetermined length position from the tip, and a step 1d is formed after the step, and the end of the small tube is an introducer. It is linked to the group C. The sheath tube 1B is fitted to the small tube 1D of the vasodilator 1A, and the end portion of the sheath tube 1B abuts on the step 1b. In this case, the sheath tube 1B does not have its end portion processed into a tapered and sharp shape, and the outer diameter of the end portion and the long conical portion 1a
The outer diameter of the base portion side is substantially the same as that of the base portion, and is formed so that a substantial step does not occur between the base portion of the long conical portion 1a and the sheath tube 1B. Thus, the step between the long conical portion 1a and the end of the sheath tube 1B is substantially stepless, so that the catheter introducer can be smoothly inserted into the blood vessel.
【作用】 前記鞘管1Bの中心孔に対して、イントロジューサー基Ｃ
側から血管拡張管1Aを挿入させ、長円錐部1aが鞘管1Bを
押し拡げ一時的に膨張させながら透通し、段差1bが鞘管
1Bの先端を交わしたところで、段差1bと鞘管1Bの端部と
が当接する状態になる。この挿入及び透通の操作がきつ
い場合には、血管拡張管1Aの内部に針金状の支持部材
（図示せず）を予め挿入しておけば、全体が硬直状態に
補強されて挿入及び透通の操作が容易に行える。 常法の手技によりカテーテルイントロジューサーの血管
内挿入が終了した後に、血管拡張管1Aを引き抜くもので
あるが、鞘管1Bは合成樹脂材で形成されているため、段
差1bの外側部分が鞘管1Bの内部を通過する際に、前述の
挿入及び透通のときと同様に押し開かれて膨張するので
容易に引き抜くことができる。[Function] The introducer group C is attached to the central hole of the sheath tube 1B.
Insert the vasodilation tube 1A from the side, the long conical portion 1a pushes the sheath tube 1B to expand while temporarily penetrating, and the step 1b is the sheath tube.
When the tips of 1B intersect, the step 1b and the end of the sheath tube 1B come into contact with each other. If the operation of inserting and penetrating is difficult, insert a wire-like support member (not shown) inside the vasodilator 1A in advance, and the whole body will be reinforced to be rigid and inserted and penetrated. Can be easily operated. After the insertion of the catheter introducer into the blood vessel is completed by the usual procedure, the vasodilator 1A is pulled out, but since the sheath tube 1B is made of a synthetic resin material, the outer portion of the step 1b is the sheath tube. When passing through the inside of 1B, it is pushed open and inflates in the same manner as the above-mentioned insertion and penetration, so that it can be easily pulled out.
以上説明したように本考案に係るカテーテルイントロジ
ューサーは、血管拡張管の先端部は長円錐部に形成し、
その長円錐部の基部側に段差を設け、その段差から小管
に形成してその端部をイントロジューサー基に連結さ
せ、前記鞘管端部を先鋭状に加工することなくその外径
と前記長円錐部の基部側の外径とを略同一にして実質的
に前記鞘管と前記血管拡張管との段差を無くした構成に
したことにより、血管への挿入が苦痛を与えることなく
スムーズに行え、しかも血管拡張管を引き抜いた後にお
ける鞘管の端部が、従来例にように薄く且つ先鋭になっ
ていないので、捲れたり又は血管に傷を付けることもな
く、安全に手技が行えると言う種々の優れた効果を奏す
る。As described above, in the catheter introducer according to the present invention, the distal end portion of the vasodilation tube is formed into a long conical portion,
A step is provided on the base side of the long conical portion, a small tube is formed from the step, and its end is connected to an introducer base, and the outer diameter and the length of the sheath tube end are not processed sharply. By making the outer diameter of the base side of the conical portion substantially the same and substantially eliminating the step between the sheath tube and the vasodilator, the insertion into the blood vessel can be performed smoothly without causing pain. Moreover, since the end of the sheath tube after pulling out the vasodilation tube is not thin and sharp as in the conventional example, it is said that the procedure can be safely performed without curling or damaging the blood vessel. Has various excellent effects.
第１図は本考案に係るカテーテルイントロジューサーの
要部のみを拡大して示した断面図、第２図は従来例のカ
テーテルイントロジューサーの要部のみを拡大して示し
た断面図である。 1A……血管拡張管、1B……鞘管、Ｃ……イントロジュー
サー基、1a……長円錐部、1b……段差、1D……小管。FIG. 1 is an enlarged sectional view showing only an essential part of a catheter introducer according to the present invention, and FIG. 2 is an enlarged sectional view showing only an essential part of a conventional catheter introducer. 1A ... Vascular expansion tube, 1B ... Sheath tube, C ... Introducer base, 1a ... Long conical section, 1b ... Step, 1D ... Small tube.
Claims (1)
透通させるようにした合成樹脂製のカテーテルイントロ
ジューサーであって、前記血管拡張管の先端部は長円錐
部（1a）に形成し、該長円錐部の基部側に段差（1b）を
設け、その段差から小管（1D）に形成してその端部をイ
ントロジューサー基（Ｃ）に連結させ、前記鞘管端部を
先鋭状に加工することなくその外径と前記長円錐部の基
部側の外径とを略同一にして実質的に前記鞘管と前記血
管拡張管との段差を無くしたことを特徴とする無段カテ
ーテルイントロジューサー。1. A catheter introducer made of a synthetic resin, wherein a vasodilator (1A) is inserted into a sheath tube (1B) so as to be permeable, and a distal end portion of the vasodilator tube is a long conical portion ( 1a), a step (1b) is provided on the base side of the long conical portion, and a small tube (1D) is formed from the step so that its end is connected to the introducer group (C). It is characterized in that the outer diameter and the outer diameter on the base side of the long conical portion are made substantially the same without processing the portion into a sharpened shape to substantially eliminate the step between the sheath tube and the vasodilator. A stepless catheter introducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989075877U JPH0639723Y2 (en) | 1989-06-27 | 1989-06-27 | Stepless catheter introducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989075877U JPH0639723Y2 (en) | 1989-06-27 | 1989-06-27 | Stepless catheter introducer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0315534U JPH0315534U (en) | 1991-02-15 |
| JPH0639723Y2 true JPH0639723Y2 (en) | 1994-10-19 |
Family
ID=31616846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989075877U Expired - Lifetime JPH0639723Y2 (en) | 1989-06-27 | 1989-06-27 | Stepless catheter introducer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0639723Y2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3814618C1 (en) * | 1988-04-29 | 1989-02-02 | Rainer Dr. 8000 Muenchen De Baumgart | |
| US5011478A (en) * | 1989-01-31 | 1991-04-30 | Cook Incorporation | Recessed dilator-sheath assembly and method |
-
1989
- 1989-06-27 JP JP1989075877U patent/JPH0639723Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0315534U (en) | 1991-02-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |