JPH0151265B2 - - Google Patents
Info
- Publication number
- JPH0151265B2 JPH0151265B2 JP62025684A JP2568487A JPH0151265B2 JP H0151265 B2 JPH0151265 B2 JP H0151265B2 JP 62025684 A JP62025684 A JP 62025684A JP 2568487 A JP2568487 A JP 2568487A JP H0151265 B2 JPH0151265 B2 JP H0151265B2
- Authority
- JP
- Japan
- Prior art keywords
- catheter
- silicone rubber
- fine powder
- coated
- silicone
- 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
Links
- 229920002379 silicone rubber Polymers 0.000 claims description 16
- 239000004945 silicone rubber Substances 0.000 claims description 16
- 239000011248 coating agent Substances 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 5
- 229920002050 silicone resin Polymers 0.000 claims description 4
- 239000006185 dispersion Substances 0.000 claims description 3
- 238000013035 low temperature curing Methods 0.000 claims description 3
- 239000010409 thin film Substances 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 description 4
- 239000010408 film Substances 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004073 vulcanization Methods 0.000 description 3
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 210000003437 trachea Anatomy 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000002785 anti-thrombosis Effects 0.000 description 1
- 239000003146 anticoagulant agent Substances 0.000 description 1
- 210000001124 body fluid Anatomy 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002949 hemolytic effect Effects 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 210000000214 mouth Anatomy 0.000 description 1
- 231100000989 no adverse effect Toxicity 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Materials For Medical Uses (AREA)
Description
この発明は、医療を容易にするために改良され
たシリコーンゴムカテーテルに関するものであ
る。
(1) 従来の技術
カテーテルには、用途別に材質や形状の異なる
ものが種々存在する。例えば材質については、塩
化ビニール、ラテツクス、ポリエチレン、ナイロ
ン、テフロン、シリコーンゴム等がある。
シリコーンゴムは、他の合成樹脂に比較し生体
組織に対する刺戟が少なく、また体内に長く留置
しても劣化するおそれが殆どないという利点があ
り、かつ柔軟であるので医療用に好適であるとし
て、これを用いたカテーテルが広く使用されてい
るが、他面その操作が困難である欠点もあつた。
例えば、カテーテルの体内挿入を容易にするた
め、予めカテーテルの内腔にガイドワイヤー・ス
タイレツトなどを嵌入しておきカテーテルの体内
挿入後これを抜去する手法がしばしば採られる
が、シリコーンゴムの摩擦抵抗が大きく、滑りが
悪いので、抜去しにくい。また、治療目的によつ
ては、該カテーテル内に更に小径のカテーテルを
挿入する必要を生ずるが、ともに滑りが悪いので
その挿入は極めて困難である。そこで、従来カテ
ーテルの外面又は内腔面に水不溶性無機微粉末な
どの滑剤をコーテイングし滑りをよくしたものな
どの改良が提案されているが、これでは、折角生
体組織に対する刺戟が少ないというシリコーンゴ
ムの特質を減殺してしまうことになり、好ましく
ない。
(2) 解決すべき問題点
カテーテルは、臓器の形体に沿つて挿入した
り、その他医療目的に従い、体内で適度の曲げを
もたせたりする事が多く、前記ガイドワイヤーや
小径カテーテルなどの挿入・抜去は、その曲げ具
合の程度に応じて困難となるので、この発明の目
的はそのような状態にあるカテーテルに対するこ
れらの物の挿入・抜去を容易にし、医療を的確か
つ容易になし得ると同時に体内の膿、体液のドレ
ーン時に粘着や擬固が生じにくく、抗血栓性・溶
血性に優れたカテーテルを提案するにある。
(3) 問題点を解決する技術手段
上記問題点を解決するには、シリコーンゴムの
前記特長を存置しながら、その表面の滑りをよく
する必要がある。
そこで、シリコーンゴムを円筒状に形成し加硫
硬化させたカテーテルにおいて、該カテーテルの
外面又は内腔面に室温若しくは低温硬化型シリコ
ーンゴム又はシリコーンゴムのデイスパージヨン
を薄膜状にコーテイングし、該コーテイング面に
シリコーン樹脂の微粉末を適量噴霧し、加硫硬化
してこれを固着することにより解決した。
(4) 実施例
本発明の実施例を図面によつて説明する。第１
図はカテーテルの一例として示した気管内挿入用
カテーテルの外形模型図、第２図は該気管内挿入
用カテーテルに本発明の実施した場合の一例を第
１図Ａ−Ａ線断面図として示したものである。カ
テーテルチユーブ（大）１は、シリコーンゴムを
円筒状に形成し、加硫硬化させたもので、その内
腔面に室温若しくは低温硬化型シリコーンゴム又
はシリコーンゴムのデイスパージヨンを適宜の手
段で薄膜状にコーテイングし（例えば、該カテー
テルチユーブに前記コーテイング剤を満たして直
立させ、該カテーテルチユーブ内径より小さい直
径で適宜の重さを有する球などを上方より下方へ
通過せしめればよい。その場合、該カテーテルチ
ユーブの下端からコーテイング剤を吸引すれば、
より容易にコーテイングできる。）、コーテイング
膜３を形成し、その膜面に適宜の噴霧器でシリコ
ーン樹脂微粉末を適量吹きつけコーテイング膜３
を加硫しシリコーン微粉末を固着する（必要に応
じて水洗いなどして余分なシリコーン樹脂微粉末
を除去する）。
(5) 本発明の作用効果
本発明の作用効果を検するため、従来のシリコ
ーンゴムカテーテル（以下Siと表示する）、塩化
ビニールカテーテル（以下PVCと表示する）及
び本発明によるコーテイングカテーテル（以下
SiPと表示する）でそれぞれ内径３mmのものの内
腔に、Si、PVC及びポリエチレンカテーテル
（以下PEと表示する）でそれぞれ外径２mmのもの
を嵌入通過させる場合の該嵌入各カテーテルに対
する荷重を置針式テンシヨンゲージで計測した結
果は次表のとおりである。
なお、同表中0゜と表示する欄は前記各カテーテ
ルを曲げない場合、90゜及び180゜と表示する欄は
前記各カテーテルを第３図又は第４図に示す状態
におけるそれぞれの通過荷重を表示する。
This invention relates to an improved silicone rubber catheter to facilitate medical treatment. (1) Conventional technology There are various types of catheters with different materials and shapes depending on the purpose. For example, materials include vinyl chloride, latex, polyethylene, nylon, Teflon, silicone rubber, etc. Silicone rubber has the advantage of being less irritating to living tissues than other synthetic resins, and has almost no risk of deterioration even if left in the body for a long time, and is flexible, making it suitable for medical use. Catheters using this are widely used, but they also have the drawback of being difficult to operate.
For example, in order to make it easier to insert a catheter into the body, a method is often used in which a guide wire or stylet, etc. is inserted into the lumen of the catheter in advance and then removed after the catheter is inserted into the body, but the frictional resistance of silicone rubber It is large and slippery, so it is difficult to remove. Furthermore, depending on the purpose of treatment, it may be necessary to insert a catheter with a smaller diameter into the catheter, but this is extremely difficult because both catheters have poor slippage. Therefore, conventional improvements have been proposed, such as coating the outer surface or inner lumen surface of the catheter with a lubricant such as water-insoluble inorganic fine powder to improve the slippage. This is undesirable because it reduces the characteristics of (2) Problems to be solved Catheters are often inserted along the shape of an organ or bent to an appropriate degree within the body for other medical purposes, making it difficult to insert and remove guide wires and small-diameter catheters. The purpose of this invention is to facilitate the insertion and removal of these objects into and out of the catheter in such a state, thereby allowing accurate and easy medical treatment and at the same time preventing the catheter from entering the body. The purpose of the present invention is to propose a catheter that is less likely to cause adhesion or pseudo-solidification when draining pus and body fluids, and has excellent antithrombotic and hemolytic properties. (3) Technical means for solving the problems In order to solve the above problems, it is necessary to improve the slipperiness of the surface of silicone rubber while preserving the above-mentioned characteristics of silicone rubber. Therefore, in a catheter made of silicone rubber formed into a cylindrical shape and cured by vulcanization, the outer surface or inner surface of the catheter is coated with a thin film of room temperature or low temperature curing silicone rubber or silicone rubber dispersion. The problem was solved by spraying an appropriate amount of fine powder of silicone resin on the surface and fixing it by vulcanization. (4) Examples Examples of the present invention will be described with reference to the drawings. 1st
The figure is a schematic diagram of an intratracheal insertion catheter shown as an example of a catheter, and FIG. 2 is a sectional view taken along the line A-A in FIG. It is something. The catheter tube (large) 1 is made of silicone rubber formed into a cylindrical shape and cured by vulcanization, and a thin film of room temperature or low temperature curing silicone rubber or a dispersion of silicone rubber is coated on the inner surface of the tube by an appropriate means. (For example, the catheter tube may be filled with the coating agent and stood upright, and a ball or the like having a diameter smaller than the inner diameter of the catheter tube and an appropriate weight may be passed from the top to the bottom. In that case, By suctioning the coating agent from the lower end of the catheter tube,
Can be coated more easily. ), a coating film 3 is formed, and an appropriate amount of silicone resin fine powder is sprayed onto the film surface using an appropriate sprayer to form a coating film 3.
Vulcanize to fix the silicone fine powder (if necessary, remove excess silicone resin fine powder by washing with water, etc.). (5) Effects of the present invention In order to examine the effects of the present invention, we examined a conventional silicone rubber catheter (hereinafter referred to as Si), a vinyl chloride catheter (hereinafter referred to as PVC), and a coated catheter according to the present invention (hereinafter referred to as PVC).
When a Si, PVC, and polyethylene catheter (hereinafter referred to as PE) with an outer diameter of 2 mm is inserted into the inner lumen of a SiP (hereinafter referred to as PE) with an inner diameter of 3 mm, the load on each inserted catheter is calculated using the needle placement method. The results measured with a tension gauge are shown in the table below. In addition, in the same table, the column marked 0° indicates the case where each catheter is not bent, and the columns marked 90° and 180° indicate the respective passing loads when each catheter is in the state shown in Fig. 3 or 4. indicate.
【表】
例えば、気管内にカテーテルを挿入する場合、
口腔内から気道を通過させるまでに、気管内のカ
テーテルチユーブが90゜近く曲げられるので、上
記試験結果から明らかな様に、Siは滑性不良であ
り、またPVCでは医療上好ましくないとき、SiP
が極めて優れた作用効果をもたらすことが判明し
た。従つて本発明によれば、カテーテル操作が容
易となり、的確な医療を行うことができ、かつ生
体組織に悪影響をもたらすことがない。[Table] For example, when inserting a catheter into the trachea,
Since the catheter tube in the trachea is bent nearly 90 degrees before passing from the oral cavity to the airway, it is clear from the above test results that Si has poor lubricity.
It has been found that this has extremely excellent effects. Therefore, according to the present invention, catheter operation becomes easy, accurate medical care can be performed, and there is no adverse effect on living tissues.
第１図は、気管内挿入用カテーテルの外形膜型
図、第２図は、該気管内挿入用カテーテルの内腔
面に本発明を実施した一例を示す第１図Ａ−Ａ線
断面図、第３図及び第４図は、該気管内挿入用カ
テーテルチユーブをそれぞれ90゜又は180゜折り曲
げて他のカテーテルチユーブを挿入した状態を示
す説明図である。
１……カテーテルチユーブ（大）、２……アダ
プター、３……コーテイング膜、４……シリコー
ン微粉末、５……内腔、６……カテーテルチユー
ブ（小）。
FIG. 1 is a diagram of the outer membrane type of a catheter for intratracheal insertion, and FIG. 2 is a sectional view taken along the line A-A in FIG. FIGS. 3 and 4 are explanatory diagrams showing the state in which the intratracheal insertion catheter tube is bent by 90 degrees or 180 degrees, respectively, and another catheter tube is inserted. 1... Catheter tube (large), 2... Adapter, 3... Coating film, 4... Silicone fine powder, 5... Lumen, 6... Catheter tube (small).
Claims (1)
室温若しくは低温硬化型シリコーンゴム又はシリ
コーンゴムのデイスパージヨンが薄膜状にコーテ
イングされ、該コーテイング面にシリコーン樹脂
微粉末が固着されたことを特徴とするコーテイン
グカテーテル。1. A coating characterized in that the outer surface or inner surface of a silicone rubber tube is coated with room temperature or low temperature curing silicone rubber or a dispersion of silicone rubber in the form of a thin film, and silicone resin fine powder is adhered to the coated surface. catheter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62025684A JPS63194664A (en) | 1987-02-06 | 1987-02-06 | Coating catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62025684A JPS63194664A (en) | 1987-02-06 | 1987-02-06 | Coating catheter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63194664A JPS63194664A (en) | 1988-08-11 |
| JPH0151265B2 true JPH0151265B2 (en) | 1989-11-02 |
Family
ID=12172613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62025684A Granted JPS63194664A (en) | 1987-02-06 | 1987-02-06 | Coating catheter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63194664A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008000287A (en) * | 2006-06-21 | 2008-01-10 | Terumo Corp | Sliding composition for coating medical appliance and medical appliance with sliding coat |
| GB2472474B (en) * | 2009-12-14 | 2012-04-11 | Pro Teq Surfacing Uk Ltd | Method for applying a coating to a surface |
-
1987
- 1987-02-06 JP JP62025684A patent/JPS63194664A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63194664A (en) | 1988-08-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |