JP2008161237A - Medicine application tube - Google Patents

Medicine application tube Download PDF

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JP2008161237A
JP2008161237A JP2006350908A JP2006350908A JP2008161237A JP 2008161237 A JP2008161237 A JP 2008161237A JP 2006350908 A JP2006350908 A JP 2006350908A JP 2006350908 A JP2006350908 A JP 2006350908A JP 2008161237 A JP2008161237 A JP 2008161237A
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expansion member
tube
drug
medicine
fluid
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Yoichi Tamenori
洋一 為則
Shinichiro Kitahara
慎一郎 北原
Takeshi Furukawa
岳 古川
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Sekisui Chemical Co Ltd
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Sekisui Chemical Co Ltd
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<P>PROBLEM TO BE SOLVED: To provide a medicine application tube easily inserted even when a diameter of a conduit leading to an organ in a body cavity is small and made in direct contact with the inner wall even when the diameter of a target part leading to the conduit is relatively large, thereby surely and intensively applying a medicine. <P>SOLUTION: A cylindrical expansion member 3 provided with a medicine holding recessed part 4 is mounted on the distal end outer peripheral part of a tube main body 1, and a fluid can be supplied through a conducting lumen 2 provided inside the tube main body 1 into the expansion member 3. By inserting the medicine application tube into the body cavity and supplying the fluid into the expansion member 3 through the conducting lumen 2 at the target part, the expansion member 3 is expanded by the fluid pressure and made in contact with the target part. Also, the medicine holding recessed part 4 is projected by the expansion and the medicine 6 in the inside is directly applied to the target part. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、体腔内の所定箇所に試薬、治療薬、麻酔薬などの薬剤を投与したり塗布したりする薬剤塗布チューブに関する。   The present invention relates to a drug application tube that administers or applies a drug such as a reagent, a therapeutic drug, and an anesthetic to a predetermined location in a body cavity.

診断や治療のための薬剤投与方法として、カテーテルやチューブを体腔内に挿入してその先端部から各種の器官や所定部位に直接投与することが広く行われている。このように、カテーテルやチューブを使用して薬剤の投与を行う方法によれば、経口や静脈注射などの手段で薬剤投与を行う場合に比べて、体腔内の所定の目的箇所に試薬や治療薬、麻酔薬等の薬剤を集中的に投与することができるので極めて効率がよい。このため、診断や治療をより高精度に行うことができるばかりでなく薬剤を効果的に用いた治療が可能となり、しかも、薬剤投与の必要のない箇所に薬剤が作用することによる副作用の発生リスクを低減させることができる。   As a drug administration method for diagnosis and treatment, it is widely performed to insert a catheter or tube into a body cavity and directly administer it from the distal end to various organs or predetermined sites. Thus, according to the method of administering a drug using a catheter or a tube, compared with the case where the drug is administered by means such as oral or intravenous injection, a reagent or therapeutic agent is placed at a predetermined target location in the body cavity. Since an anesthetic and other drugs can be administered intensively, it is extremely efficient. For this reason, not only can diagnosis and treatment be performed with higher accuracy, but also treatment using the drug can be performed effectively, and the risk of side effects due to the action of the drug on the site where no drug administration is required. Can be reduced.

カテーテルやチューブによることなく、体腔内の目的箇所に薬剤を塗布する方法としては、従来から、薬剤等を含有、保持した部材、例えば、先端綿球に薬剤を塗布、含浸させた綿棒や、先端部に設けている植毛、或いは、球状のスポンジに薬剤を含浸、保有させた棒状体を使用して薬剤を塗布する方法が広く知られている。   As a method of applying a drug to a target site in a body cavity without using a catheter or a tube, conventionally, a member containing or holding a drug or the like, for example, a cotton swab in which a drug is applied and impregnated on a tip cotton ball, or a tip There is widely known a method for applying a drug using a rod-like body impregnated with and held by a flocking provided in the part or a spherical sponge.

一方、カテーテルやチューブを用いて体腔内の目的箇所に薬剤を塗布する方法としては、対象とする箇所に向けて先端部から薬剤を放出したり、噴出させる方法や、先端開口部内に薬剤を保持させておき、先端部が目的箇所に達した時に薬剤を対象部位に向かって散布したり投与する方法が開発されている。   On the other hand, as a method of applying a drug to a target site in a body cavity using a catheter or a tube, a drug is discharged or ejected from the tip toward the target site, or the drug is held in the tip opening. In addition, a method of spraying or administering a drug toward a target site when the tip reaches a target site has been developed.

例えば、特許文献１には先端部に複数個の薬剤放出孔を設けているチューブを体腔内の目的箇所まで挿入したのち、外部に設置しているポンプの作動によりこのチューブ内に薬剤を送り込み、上記薬剤放出孔から対象部位に薬剤を注入する方法が記載されている。   For example, in Patent Document 1, after inserting a tube having a plurality of drug discharge holes at the distal end to a target location in the body cavity, the drug is fed into the tube by the operation of a pump installed outside, A method of injecting a drug from the drug release hole into a target site is described.

また、特許文献２には、先端開口部内に薬液等の散布剤を保持する散布剤収容部を設けたチューブを体腔内の目的箇所まで挿入にしたのち、チューブの手元側に設けている超音波振動子を作動させることにより、上記散布剤を微粒子化させて放出可能にした超音波散布チューブが記載されている。   Patent Document 2 discloses an ultrasonic wave provided on the proximal side of a tube after a tube provided with a spray agent container for holding a spray agent such as a chemical solution in a tip opening is inserted into a body cavity. An ultrasonic spray tube is described in which the spraying agent is atomized to be released by operating a vibrator.

さらに、特許文献３には、先端開口部内に磁性を持つ薬剤を保持した保持部を設けると共にこの保持部に向かって接離自在な磁石片を摺動自在に内装しているチューブを、上記磁石片によって薬剤を保持部に吸引、保持させた状態で体腔内の目的箇所まで挿入にし、目的箇所に達した時に磁石片を後退させて保持力を解くことにより、薬剤を投与可能にした薬剤の磁気輸送カテーテルが記載されている。
特開平２−２３９８７５号公報 特開２００１−２５４６７号公報 特開２００２−３４５９６８号公報 Further, in Patent Document 3, a tube in which a holding part that holds a magnetic drug is provided in a distal end opening and a magnet piece that is slidable toward and away from the holding part is slidably mounted is provided in the magnet. The medicine is made available for administration by inserting the medicine into the holding part with the piece and inserting it to the target location in the body cavity. When the target is reached, the magnet piece is retracted to release the holding force. A magnetic delivery catheter is described.
JP-A-2-239875 JP 2001-25467 A JP 2002-345968 A

しかしながら、上記カテーテルやチューブによることなく、綿棒等のようにその先端部に薬剤を塗布、含浸させた綿球等を有する部材では、体腔の管路内に挿入すると、目的箇所に達するまでに綿球等の表面が管路の内壁に摺接して薬剤がその内壁に塗布されたり或いは脱落して対象部位に効果的に薬剤を塗布することができないといった問題点がある。このような問題点はチューブまたはカテーテルの先端外周部に薬剤を保有させた状態で体腔内に挿入した場合においても発生する。   However, in the case of a member having a cotton ball or the like in which a drug is applied and impregnated at the tip thereof, such as a cotton swab, without using the catheter or tube, when the member is inserted into a body cavity duct, There is a problem that the surface of a sphere or the like is in sliding contact with the inner wall of the pipe and the drug is applied to the inner wall or drops off and the drug cannot be effectively applied to the target site. Such a problem also occurs when the tube or catheter is inserted into a body cavity with the drug held on the outer periphery of the tip.

一方、上記特許文献１に記載されているようにチューブ内を通じて薬剤を対象部位に噴射する方法や、特許文献２、３に記載されているようにチューブの先端部内に薬剤を保持させておく場合には、上述したような問題点は生じないが、特許文献１のように、チューブの先端から対象部位に薬剤を噴射する方法では、薬液を噴出させると、その圧力によって器官などを損傷させる虞れがあり、噴出力を弱くすると対象部位に対する薬剤の投与が困難になる場合が生じる。   On the other hand, as described in Patent Document 1, a method of injecting a drug through a tube to a target site, or when a drug is held in the distal end of a tube as described in Patent Documents 2 and 3 However, as described in Patent Document 1, in the method of injecting a drug from the tip of the tube to the target site as in Patent Document 1, if the drug solution is ejected, the organ or the like may be damaged by the pressure. If the jet power is weakened, it may be difficult to administer the drug to the target site.

また、上記特許文献２、３に記載されたチューブやカテーテルによれば、その先端部内に薬剤を保持しておく手段やその保持を解く手段等を必要として構造が複雑化し、コスト高になる。その上、いずれの手段においても、体腔内の対象部位に対して離れた位置から薬剤を噴射等によって投与するように構成しているので、対象部位以外の部分にも薬剤が塗布、投与されることになり、薬剤の使用量が必要以上多くなるといった問題点がある。   In addition, according to the tubes and catheters described in Patent Documents 2 and 3, the structure is complicated by requiring means for holding the medicine in the distal end portion thereof, means for releasing the holding, and the like, and the cost is increased. In addition, in any means, the medicine is applied by injection or the like from a position away from the target site in the body cavity, so that the drug is applied and administered to a part other than the target site. In other words, there is a problem that the amount of medicine used is more than necessary.

さらに、実際の体腔の管路にあってはその管路径が定まらない場合が多く、従って、管路内にチューブ等を挿入してこの管路を通じて目的とする部位に薬剤を塗布したり供与する際にチューブが比較的大径であると、管路内への挿入時や管路内での通過時に抵抗が生じて管路を傷つける虞れがある。そのため、通常は、大小径のチューブやカテーテルを準備しておき、小径のものから大径のものに順次、交換しながら挿入しているのが現状である。また、棒状体やチューブまたはカテーテルの先端部に薬剤を保有させておき、この薬剤を目的とする部位に直接塗布する方法では、これらの先端部が体腔の管路内を通過する際に、管路の内壁に摺接して内壁との摩擦力や変形等により薬剤が脱落する虞れがあり、そのため、複数本のチューブ等を準備しておく必要がある。   Furthermore, in the actual body cavity duct, the diameter of the duct is often not determined. Therefore, a tube or the like is inserted into the duct and the drug is applied to or delivered to the target site through the duct. If the tube has a relatively large diameter, resistance may be generated when the tube is inserted into the tube or when the tube passes through the tube, and the tube may be damaged. For this reason, in general, large and small diameter tubes and catheters are prepared, and inserted while sequentially replacing the small diameter tube and the large diameter tube. In addition, in a method in which a drug is held at the tip of a rod-like body, tube, or catheter, and this drug is directly applied to a target site, the tube is passed when these tips pass through the body cavity. There is a possibility that the medicine may fall off due to frictional force or deformation with the inner wall by sliding contact with the inner wall of the road. Therefore, it is necessary to prepare a plurality of tubes and the like.

本発明はこのような問題点に鑑みてなされたもので、その目的とするところは、径の定まらない体腔の管路径内を通じて体腔内の対象とする部位に薬剤を塗布する際に、複数のチューブを使用することなく、一本のチューブを一回、挿入するだけで、確実且つ容易に塗布することができるようにした薬剤塗布チューブを提供するにある。   The present invention has been made in view of such problems. The object of the present invention is to apply a plurality of drugs when a drug is applied to a target site in a body cavity through the diameter of a body cavity where the diameter is not fixed. It is an object of the present invention to provide a drug application tube that can be reliably and easily applied by inserting a single tube once without using a tube.

上記目的を達成するために本発明の薬剤塗布チューブは、請求項１に記載したように、体腔内に挿入して目的部位に薬剤を塗布するための薬剤塗布チューブであって、内部に流体導通ルーメンを設けている可撓性を有するチューブ本体と、このチューブ本体の先端部外周面に装着され且つ上記流体導通ルーメンを通じてその内部に供給される流体圧により拡張可能な拡張部材とからなり、この拡張部材に該拡張部材が拡張した時に拡張部材の外周面に向かって拡がりながら張り出す薬剤保持凹部を設けた構造としている。   In order to achieve the above object, a drug application tube according to the present invention is a drug application tube for applying a drug to a target site by being inserted into a body cavity, as described in claim 1, and is fluid-conductive inside. A flexible tube main body provided with a lumen, and an expansion member attached to the outer peripheral surface of the distal end of the tube main body and expandable by fluid pressure supplied to the inside through the fluid conduction lumen. When the expansion member is expanded, the expansion member is provided with a medicine holding recess that expands toward the outer peripheral surface of the expansion member.

このように構成した薬剤塗布チューブにおいて、請求項２に係る発明は、チューブ本体の先端部外周面に拡張部材を収納する周溝を設け、この周溝に弾性筒状部材からなる拡張部材を被嵌状態に収納してその両端部を周溝の前後端部上に固着している一方、チューブ本体の先端部に流体導通ルーメンから拡張部材内に連通する流体導入孔を設けていることを特徴とする。   In the drug application tube configured as described above, the invention according to claim 2 is provided with a circumferential groove for accommodating the expansion member on the outer peripheral surface of the distal end portion of the tube body, and the expansion member made of an elastic cylindrical member is covered in the circumferential groove. It is housed in a fitted state, and its both end portions are fixed on the front and rear end portions of the circumferential groove, while a fluid introduction hole communicating from the fluid conduction lumen into the expansion member is provided at the distal end portion of the tube body. And

また、請求項３に係る発明は、上記拡張部材の外周面の複数個所に薬剤保持凹部を設けていることを特徴とし、請求項４に係る発明は、薬剤保持凹部を拡張部材の長さ方向又は周方向に設けた複数の溝によって形成していることを特徴とする。   The invention according to claim 3 is characterized in that a medicine holding recess is provided at a plurality of locations on the outer peripheral surface of the expansion member, and the invention according to claim 4 is characterized in that the medicine holding recess is in the length direction of the extension member. Or it is formed by the some groove | channel provided in the circumferential direction.

請求項１に係る発明によれば、チューブ本体の先端外周面に拡張部材を装着し、この拡張部材をその内部に供給する流体圧によって拡張させて拡張部材の外周面に設けている薬剤保持凹部内の薬剤を体腔内の対象部位に塗布、投与可能に構成しているので、体腔内の対象部位が大径であってもこの拡張部材の外径をチューブ本体の外径よりも大きく拡張させてその外周面を対象部位に簡単且つ正確に接触させることができると共に拡張部材の拡張によって薬剤保持凹部が拡張部材の外周面に向かって拡がりながら張り出して内部の薬剤を拡張部材の外周面から積極的に外部に突出させて対象部位に集中的に且つ確実に塗布することができる。   According to the first aspect of the present invention, the expansion member is mounted on the outer peripheral surface of the distal end of the tube main body, and the expansion member is expanded by the fluid pressure supplied to the inside thereof, and the medicine holding recess provided on the outer peripheral surface of the expansion member Since the drug inside the body cavity can be applied and administered to the target site in the body cavity, the outer diameter of the expansion member is expanded larger than the outer diameter of the tube body even if the target site in the body cavity has a large diameter. The outer peripheral surface can be easily and accurately brought into contact with the target site, and the expansion of the expansion member causes the drug holding recess to expand while expanding toward the outer peripheral surface of the expansion member. Thus, it can be applied to the target site in a concentrated and reliable manner by projecting outward.

従って、チューブ本体の外径を体腔の器官に通じる管路における小径部分よりも小径に形成しておいても、拡張部材の拡張によって確実に体腔内の対象部位に薬剤を塗布することができるから、チューブ本体を体腔の管路内に容易に挿入することができてその挿入による患者の苦痛を極力抑制することができるばかりでなく、体腔の内壁等を傷つけることなく該体腔の管路内を円滑且つ確実に対象部位まで挿入することができるものであり、さらに、挿入時には薬剤が拡張部材に設けている薬剤保持凹部内に保持されているので、体腔内の狭い管路を通過する際においても薬剤が管路の内壁に付着したり脱落したりする虞れはない。そのため、１本の薬剤塗布チューブによって容易に且つ能率よく対象部位に対する薬剤塗布処置を行うことができる。   Therefore, even if the outer diameter of the tube main body is formed to be smaller than the small diameter portion in the duct leading to the organ of the body cavity, the drug can be reliably applied to the target site in the body cavity by the expansion of the expansion member. In addition to being able to easily insert the tube body into the body cavity conduit and suppressing the patient's pain due to the insertion as much as possible, the inside of the body cavity conduit is not damaged. It can be smoothly and reliably inserted to the target site, and when inserted, since the drug is held in the drug holding recess provided in the expansion member, when passing through a narrow duct in the body cavity However, there is no possibility that the drug adheres to the inner wall of the duct or falls off. Therefore, it is possible to easily and efficiently perform a drug application treatment on a target site with a single drug application tube.

さらに、拡張部材を拡張させる手段は、可撓性を有するチューブ本体内に流体導通ルーメンを設けてこの流体導通ルーメン内を通じて拡張部材に気体や水等の流体を供給することにより、その流体圧で拡張するように構成しているので、構造が簡単で安価に提供できるばかりでなく、取扱いが容易で体腔内の対象部位に対する薬剤塗布作業が円滑に行うことができる。   Furthermore, the means for expanding the expansion member is provided by providing a fluid conduction lumen in the flexible tube body and supplying a fluid such as gas or water to the expansion member through the fluid conduction lumen. Since it is configured to be expanded, not only can the structure be simple and can be provided at low cost, but it can be handled easily and the drug application operation to the target site in the body cavity can be performed smoothly.

請求項２に係る発明によれば、上記チューブ本体の先端部外周面に拡張部材を収納する周溝を設け、この周溝に弾性部材からなる拡張部材を被嵌状態に収納してその両端部を周溝の前後端部上に固着しているので、拡張部材を弾性的に拡径させることによってチューブ本体の先端部外周面に設けている上記周溝に簡単に被嵌させることができると共に被嵌した状態においては、弾性的に縮径していてその内周面を周溝野溝底上に密接させてチューブ本体の外周面から突出することなく周溝内に収納しておくことができ、従って、拡張部材の外周面が体腔内の管壁等に接することなくチューブ本体を円滑に対象部位まで挿入することができる。   According to the second aspect of the present invention, a circumferential groove for accommodating the expansion member is provided on the outer peripheral surface of the distal end portion of the tube body, and the expansion member made of an elastic member is accommodated in the circumferential groove in a fitted state. Is fixed on the front and rear end portions of the circumferential groove, so that the expansion member can be easily fitted into the circumferential groove provided on the outer peripheral surface of the distal end portion of the tube body by elastically expanding the diameter. In the fitted state, it is elastically reduced in diameter and can be stored in the circumferential groove without protruding from the outer circumferential surface of the tube main body with its inner circumferential surface closely contacting the circumferential groove groove bottom. Therefore, the tube body can be smoothly inserted to the target site without the outer peripheral surface of the expansion member contacting the tube wall or the like in the body cavity.

さらに、この拡張部材は弾性を有する筒状部材からなるので、体腔における対象部位の径や大きさに応じて膨脹させることができ、その対象部位の内壁に拡張部材を接触させて薬剤保持凹部内の薬剤を確実且つ円滑に塗布、投与することができる。その上、チューブ本体の先端部に流体導通ルーメンから拡張部材の内周面とチューブ本体の外周面間に連通する流体導入孔を設けているので、拡張部材の内周面に流体圧を集中的に作用させて、体腔の対象部位にその外周面が接するまで素早く拡張させることができる。   Further, since the expansion member is made of a cylindrical member having elasticity, it can be expanded according to the diameter and size of the target site in the body cavity, and the expansion member is brought into contact with the inner wall of the target site to be inside the drug holding recess. Can be applied and administered reliably and smoothly. In addition, a fluid introduction hole that communicates between the inner peripheral surface of the expansion member and the outer peripheral surface of the tube body from the fluid conduction lumen is provided at the distal end of the tube main body, so that fluid pressure is concentrated on the inner peripheral surface of the expansion member. And can be expanded quickly until the outer peripheral surface comes into contact with the target part of the body cavity.

また、請求項３に係る発明によれば、上記薬剤保持凹部を拡張部材の外周面における複数個所に設けているので、比較的多量の薬剤を保持しておくことができると共に、対象部位に均一に塗布、投与することができる。   According to the invention of claim 3, since the medicine holding recesses are provided at a plurality of locations on the outer peripheral surface of the expansion member, it is possible to hold a relatively large amount of medicine and to uniformly apply to the target site. Can be applied and administered.

その上、請求項４に係る発明によれば、薬剤保持凹部を拡張部材の長さ方向又は周方向に設けられた複数の溝によって形成しているので、一層、多量の薬剤を保持させることができ、対象部位に必要量の薬剤を確実に塗布、投与することができる。   In addition, according to the invention of claim 4, since the medicine holding recess is formed by a plurality of grooves provided in the length direction or the circumferential direction of the expansion member, a larger amount of medicine can be held. It is possible to reliably apply and administer the required amount of drug to the target site.

次に、本発明の具体的な実施の形態を図面について説明すると、図１は薬剤塗布チューブの簡略縦断側面図、図２はその拡大縦断正面図であって、これらの図において、薬剤塗布チューブＡは、一定長さと一定径を有し且つ内部に圧力流体の流体導通ルーメン２を設けているチューブ本体１と、このチューブ本体１の先端部外周面に装着された円筒形状の拡張部材３とからなり、この拡張部材３に薬剤保持凹部４を設けている一方、上記チューブ本体１の先端部に流体導通ルーメン２の先端からこの拡張部材３内に連通した流体導入孔５を設けてあり、流体導通ルーメン２を通じてその内部に供給される流体圧により上記拡張部材３を拡張させ、上記薬剤保持凹部４を拡張部材３の外周面に面一状になるように外方に張り出させて該薬剤保持凹部４内に保持されている液状の薬剤６を体腔の対象部位に塗布、投与するように構成している。   Next, specific embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a simplified vertical side view of a drug application tube, and FIG. 2 is an enlarged vertical front view thereof. A is a tube main body 1 having a constant length and a constant diameter and provided with a fluid-conducting lumen 2 for pressure fluid therein, and a cylindrical expansion member 3 attached to the outer peripheral surface of the distal end portion of the tube main body 1. The expansion member 3 is provided with the medicine holding recess 4, while the distal end portion of the tube body 1 is provided with a fluid introduction hole 5 communicated into the expansion member 3 from the distal end of the fluid conduction lumen 2. The expansion member 3 is expanded by the fluid pressure supplied to the inside thereof through the fluid conduction lumen 2, and the medicine holding recess 4 is projected outwardly so as to be flush with the outer peripheral surface of the expansion member 3. Drug retention Coating agents 6 liquid held in section 4 to the target site of the body cavity, is configured to administer.

具体的には、上記チューブ本体１は、可撓性を有し且つ使用時における基端部での挿入等の操作力を先端側に円滑に伝達することができる適度な剛性を備えた一定長さと径を有する断面円形状の棒状体からなり、その内部に基端面から先端部にまで達する上記流体導通ルーメン２を設けていると共にこのチューブ本体１の先端部外周面に上記拡張部材３を収納した周溝７を設けてあり、この周溝７に拡張部材３を被嵌させて該拡張部材３に設けている上記薬剤保持凹部４の底面を周溝７の外周面に接した状態に収納し、この拡張部材３の両端部内周面を周溝７の前後端部上に全周に亘って気密状態に固着している。   Specifically, the tube main body 1 has a certain length and has a suitable rigidity so that an operation force such as insertion at the proximal end portion can be smoothly transmitted to the distal end side in use. The fluid conducting lumen 2 extending from the proximal end surface to the distal end portion is provided therein and the expansion member 3 is accommodated on the outer peripheral surface of the distal end portion of the tube body 1. The peripheral groove 7 is provided, and the expansion member 3 is fitted into the peripheral groove 7 so that the bottom surface of the medicine holding recess 4 provided in the expansion member 3 is stored in a state in contact with the outer peripheral surface of the peripheral groove 7. The inner peripheral surfaces of both end portions of the expansion member 3 are fixed on the front and rear end portions of the circumferential groove 7 in an airtight state over the entire circumference.

さらに、上記流体導通ルーメン２の先端からチューブ本体１の先端部外周面に設けた上記周溝７の溝底に連通する上記流体導入孔５を設けて、この流体導入孔５の開口端を拡張部材３内に臨ませている。また、チューブ本体１の先端面に角部を有していると、体腔内に挿入した際に該体腔の管路壁に引っ掛かって円滑な挿入が困難となる場合が生じると共にその管路壁を傷つける虞れがあるので、図１に示すようにチューブ本体１の先端面を熱加工で溶融、成形することにより前方に向かって突出した紡錘形状の先端面1aに形成していると共に、チューブ本体１の基端面に上記流体導通ルーメン２に流体を供給するための接続コネクター８を連結、連通させている。なお、チューブ本体１の先端面を熱加工によることなく紡錘形状に形成された別な部材をチューブ本体１の先端面に固着してもよい。また、チューブ本体１内に上記流体導通ルーメン２以外のルーメンを設けてこのルーメンをチューブ本体１の先端面から前方に向かって開口させておいてもよい。   Further, the fluid introduction hole 5 communicating from the distal end of the fluid conducting lumen 2 to the groove bottom of the circumferential groove 7 provided on the outer peripheral surface of the distal end portion of the tube body 1 is provided, and the open end of the fluid introduction hole 5 is expanded. It faces the member 3. Also, if the tube body 1 has a corner on the distal end surface, when inserted into a body cavity, the tube body 1 may be caught on the channel wall of the body cavity, making smooth insertion difficult and the pipe wall being As shown in FIG. 1, the tip surface of the tube body 1 is melted and formed by thermal processing to form a spindle-shaped tip surface 1a protruding forward, as shown in FIG. A connecting connector 8 for supplying a fluid to the fluid conducting lumen 2 is connected to and communicated with the base end surface of 1. Note that another member formed into a spindle shape may be fixed to the distal end surface of the tube body 1 without subjecting the distal end surface of the tube body 1 to thermal processing. Further, a lumen other than the fluid conducting lumen 2 may be provided in the tube main body 1, and this lumen may be opened forward from the distal end surface of the tube main body 1.

チューブ本体１を構成する材料としては特に限定されないが、例えば、ポリエチレン、エチレン−プロピレン共重合体などのエチレン−α−オレフィン共重合体、ポリプロピレン、プロピレン−α−オレフィン共重合体などのポリオレフィン系樹脂；エチレン−酢酸ビニル共重合体；ポリエチレンテレフタレートなどのポリエステル系樹脂、ポリ塩化ビニル、ポリテトラフルオロエチレン、ポリウレタン、シリコーンゴム、天然ゴム等の可撓性を有する高分子材料を挙げることができる。   Although it does not specifically limit as a material which comprises the tube main body 1, For example, polyolefin resin, such as ethylene, alpha-olefin copolymers, such as polyethylene and an ethylene-propylene copolymer, polypropylene, a propylene-alpha-olefin copolymer Ethylene-vinyl acetate copolymer; flexible polymer materials such as polyester resins such as polyethylene terephthalate, polyvinyl chloride, polytetrafluoroethylene, polyurethane, silicone rubber, and natural rubber.

このような材料を使用してチューブ本体１を製造するには、押出成型や射出成型、ブロー成形、ディッピング成形などの成型手段によって行うことができるが、押出成型によって製造することが好ましい。この押出成型後に、先端面1aを上述したように熱加工によって紡錘形状に形成すると共に、先端部外周面に上記拡張部材３を収納できる長さを有する周溝７を刻設する。   The tube body 1 can be manufactured using such a material by a molding means such as extrusion molding, injection molding, blow molding, dipping molding, etc., but is preferably manufactured by extrusion molding. After this extrusion molding, the tip surface 1a is formed into a spindle shape by thermal processing as described above, and a circumferential groove 7 having a length that can accommodate the expansion member 3 is formed on the tip portion outer peripheral surface.

この周溝７内に装着された上記拡張部材３は、長さ方向及び径方向に伸縮自在な筒状部材からなるものであるが、図２に示すように、この筒状部材は周方向に山部3aと谷部3bとが交互に連続的に屈曲形成してなる断面形状を有し、この谷部3bによって上記薬剤保持凹部４を形成している。従って、薬剤保持凹部４は周方向に一定間隔毎に複数条、設けられている。なお、これらの山部3aと谷部3bとの長さ方向は拡張部材３の長さ方向に向けられて拡張部材３の両端部間に亘って設けられている。   The expansion member 3 mounted in the circumferential groove 7 is composed of a cylindrical member that can expand and contract in the length direction and the radial direction. As shown in FIG. The crest 3a and the trough 3b have a cross-sectional shape formed by alternately and continuously bending, and the drug retaining recess 4 is formed by the trough 3b. Accordingly, a plurality of the medicine holding recesses 4 are provided at regular intervals in the circumferential direction. In addition, the length direction of these peak part 3a and trough part 3b is orient | assigned to the length direction of the expansion member 3, and is provided between the both ends of the expansion member 3. As shown in FIG.

そして、チューブ本体１の先端部外周面に設けている上記周溝７の深さは、山部3aの頂面と谷部3bの底面間の寸法、即ち、薬剤保持凹部４の深さに等しく形成してあり、この拡張部材３を上記周溝７に被せてその全ての薬剤保持凹部４の底面を周溝７の溝底面に当接させ、これらの薬剤保持凹部４の開口端をチューブ本体１の外周面に向かって臨ませた状態にしてその長さ方向の両端部を周溝７の前後両端部上に固着している。なお、拡張部材３の外径はチューブ本体１の外径に略等しい径に形成されている。   The depth of the circumferential groove 7 provided on the outer peripheral surface of the distal end portion of the tube body 1 is equal to the dimension between the top surface of the crest 3a and the bottom surface of the trough 3b, that is, the depth of the drug retaining recess 4. The expansion member 3 is formed on the circumferential groove 7 so that the bottom surfaces of all the drug holding recesses 4 are brought into contact with the bottom surfaces of the circumferential grooves 7, and the open ends of these drug holding recesses 4 are connected to the tube main body. 1, both end portions in the length direction are fixed on the front and rear end portions of the circumferential groove 7 in a state of facing toward the outer peripheral surface. The outer diameter of the expansion member 3 is formed to be approximately equal to the outer diameter of the tube body 1.

拡張部材３を構成する短筒部材の材料としては、特に限定されないが、例えば、天然ゴム；シリコーンゴム；ウレタンゴム；ポリオレフィン系エラストマー、ポリスチレン系エラストマー、ポリアミド系エラストマーなどの熱可塑性エラストマー；ポリエチレン、エチレン−プロピレン共重合体などのエチレン−α−オレフィン共重合体、ポリプロピレン、プロピレン−α−オレフィン共重合体などのポリオレフィン系樹脂；エチレン−酢酸ビニル共重合体；軟質ポリ塩化ビニル、ポリウレタン、ポリイソプレンなどが挙げられ、これらの材料において、天然ゴム、シリコーンゴム、ウレタンゴムや各種エラストマーなどからなる拡張部材３を使用すると、体腔内で弾性的に大きく膨脹、収縮をさせることができるので好適である。   The material of the short cylindrical member constituting the expansion member 3 is not particularly limited. For example, natural rubber; silicone rubber; urethane rubber; thermoplastic elastomer such as polyolefin elastomer, polystyrene elastomer, polyamide elastomer; polyethylene, ethylene -Polyolefin resins such as ethylene-α-olefin copolymers such as propylene copolymer, polypropylene, propylene-α-olefin copolymers; ethylene-vinyl acetate copolymers; soft polyvinyl chloride, polyurethane, polyisoprene, etc. In these materials, it is preferable to use the expansion member 3 made of natural rubber, silicone rubber, urethane rubber, various elastomers, etc., because it can be expanded and contracted elastically and greatly in the body cavity.

このような材料を使用して拡張部材３を製造するには、上記チューブ本体１と同様に押出成型や射出成型、ブロー成形、ディッピング成形などの成型手段によって行うことができる。なお、この拡張部材３の両端部をチューブ本体１に設けている上記周溝７の前後部外周面に気密的に固着するには、熱融着による方法や接着剤を用いる方法、その両端部を糸条物で結着、固定する方法などを採用することができる。   In order to manufacture the expansion member 3 using such a material, it can be performed by molding means such as extrusion molding, injection molding, blow molding, dipping molding and the like, similar to the tube main body 1. In order to hermetically fix the both ends of the expansion member 3 to the front and rear outer peripheral surfaces of the circumferential groove 7 provided in the tube main body 1, a method by heat fusion, a method using an adhesive, It is possible to employ a method of binding and fixing with a yarn.

このように構成した薬剤塗布チューブＡは、使用に際してチューブ本体１の先端部に試薬、治療薬、麻酔薬などの液状の薬剤（薬液）６を塗布することによってチューブ本体１の先端外周部に装着している拡張部材３の薬剤保持凹部４内に図２に示すように該薬剤６を充填、保持させる。この際、薬剤６はチューブ本体１の紡錘形状の先端面1aにも塗布しておいてもよい。しかるのち、チューブ本体１を図３に示すように体腔Ｂ内に挿入し、体腔Ｂ内の目的箇所に達すると、体外側から接続コネクター８を通じて流体をチューブ本体１内の流体導通ルーメン２に供給し、この流体導通ルーメン２から該チューブ本体１の先端部に設けている流体導入孔７を通じて拡張部材３内に注入する。   The drug application tube A configured as described above is mounted on the outer periphery of the distal end of the tube body 1 by applying a liquid medicine (medical solution) 6 such as a reagent, a therapeutic agent, and an anesthetic to the distal end of the tube body 1 in use. The medicine 6 is filled and held in the medicine holding recess 4 of the expanding member 3 as shown in FIG. At this time, the medicine 6 may be applied also to the spindle-shaped tip surface 1a of the tube body 1. After that, when the tube body 1 is inserted into the body cavity B as shown in FIG. 3 and reaches the target location in the body cavity B, the fluid is supplied from the outside of the body to the fluid conduction lumen 2 in the tube body 1 through the connection connector 8. Then, it is injected from the fluid conducting lumen 2 into the expansion member 3 through the fluid introduction hole 7 provided at the distal end portion of the tube body 1.

拡張部材３内に流体を注入すると、拡張部材３がその流体圧によって膨脹して図４、図５に示すように、外管５の外径よりも大きく拡張し、その外周面を目的箇所の対象部位に接触させると共に薬剤保持凹部４の底面が流体圧によって拡張部材３の山部3aの頂部に向かって張り出すように移動し、この凹部４内に保持している薬剤６を押し出して対象部位の内壁に直接塗布、投与する。しかるのち、チューブ本体１を体外に引き出して次の薬剤塗布に使用する。なお、上記流体としては、空気などの気体や、水、生理食塩水、ゲル状の液体等を使用することができる。   When a fluid is injected into the expansion member 3, the expansion member 3 expands due to the fluid pressure and expands larger than the outer diameter of the outer tube 5 as shown in FIGS. The bottom of the medicine holding recess 4 is brought into contact with the target site and is moved toward the top of the crest 3a of the expansion member 3 by the fluid pressure, and the medicine 6 held in the recess 4 is pushed out to be the target. Apply and administer directly to the inner wall of the site. Thereafter, the tube body 1 is pulled out of the body and used for the next drug application. As the fluid, a gas such as air, water, physiological saline, a gel-like liquid, or the like can be used.

以上の実施例においては、拡張部材３の長さ方向に長い薬剤保持凹部４を拡張部材３の周方向に小間隔毎に設けているが、図６に示すように、円筒形状の拡張部材3'を長さ方向に断面連続波形状に湾曲させて波の谷部によって拡張部材3'の周方向に設けられた周溝によって薬剤保持凹部4'を形成しておいてもよい。また、チューブ本体１の先端部外周面に拡張部材３、3'を装着する周溝７を設けているが、このような周溝７を設けることなく、図７に示すように、チューブ本体１の先端部外周面に直接、装着した構造としておいてもよい。さらに、拡張部材３に設けた薬剤保持凹部４としては、直状溝や周溝形状以外に、拡張部材３の外周面から内径方向に凹設した有底の穴によって形成してもよく、また、その凹部の数は、複数に限らず、一箇所のみに設けておいてもよい。その他の構造については上記実施例と同様であるので、同一部分には同一符号を付して詳細な説明を省略する。   In the above embodiment, the medicine holding recesses 4 that are long in the length direction of the expansion member 3 are provided at small intervals in the circumferential direction of the expansion member 3, but as shown in FIG. The medicine holding recess 4 ′ may be formed by a circumferential groove provided in the circumferential direction of the expansion member 3 ′ by curving “′ in the longitudinal direction into a continuous wave shape in the cross section. Moreover, although the circumferential groove 7 which mounts expansion members 3 and 3 'is provided in the outer peripheral surface of the front-end | tip part of the tube main body 1, as shown in FIG. A structure may be adopted in which the tip is directly attached to the outer peripheral surface of the tip. Furthermore, the medicine holding recess 4 provided in the expansion member 3 may be formed by a bottomed hole recessed in the inner diameter direction from the outer peripheral surface of the expansion member 3 in addition to the shape of a straight groove or a circumferential groove. The number of the recesses is not limited to a plurality and may be provided only at one place. Since other structures are the same as those in the above embodiment, the same parts are denoted by the same reference numerals and detailed description thereof is omitted.

本発明薬剤塗布チューブの簡略縦断側面図。BRIEF DESCRIPTION OF THE DRAWINGS FIG. その拡大縦断正面図。The enlarged vertical front view. 体腔の管路内に挿入している状態の一部縦断側面図。The partial vertical side view of the state inserted in the duct of a body cavity. 拡張部材を拡張させた使用状態を示す先端部分の縦断側面図。The longitudinal side view of the front-end | tip part which shows the use condition which extended the expansion member. その縦断正面図。The longitudinal front view. 別な実施の形態を示す先端部分の縦断側面図。The vertical side view of the front-end | tip part which shows another embodiment. さらに別な実施の形態を示す先端部分の縦断側面図。The longitudinal side view of the front-end | tip part which shows another embodiment.

符号の説明Explanation of symbols

Ａ 薬剤塗布チューブ
１ チューブ本体
２ 流体導通ルーメン
３ 拡張部材
４ 薬剤保持凹部
５ 流体導入孔
６ 薬剤 A medicine application tube 1 tube body 2 fluid conduction lumen 3 expansion member 4 medicine holding recess 5 fluid introduction hole 6 medicine

Claims (4)

体腔内に挿入して目的部位に薬剤を塗布するための薬剤塗布チューブであって、内部に導通ルーメンを設けている可撓性を有するチューブ本体と、このチューブ本体の先端部外周面に装着され且つ上記流体導通ルーメンを通じてその内部に供給される流体圧により拡張可能な拡張部材とからなり、この拡張部材に該拡張部材が拡張した時に拡張部材の外周面に向かって拡がりながら張り出す薬剤保持凹部を設けていることを特徴とする薬剤塗布チューブ。   A drug application tube that is inserted into a body cavity and applies a drug to a target site. The tube has a flexible tube body with a conductive lumen inside, and is attached to the outer peripheral surface of the distal end of the tube body. And an expansion member that can be expanded by the fluid pressure supplied to the inside through the fluid conducting lumen, and expands toward the outer peripheral surface of the expansion member when the expansion member expands on the expansion member. A drug application tube characterized by comprising: チューブ本体の先端部外周面に拡張部材を収納する周溝を設け、この周溝に弾性筒状部材からなる拡張部材を被嵌状態に収納してその両端部を周溝の前後端部上に固着している一方、チューブ本体の先端部に流体導通ルーメンから拡張部材内に連通する流体導入孔を設けていることを特徴とする請求項１に記載の薬剤塗布チューブ。   A circumferential groove for accommodating the expansion member is provided on the outer peripheral surface of the distal end portion of the tube body, and the expansion member made of an elastic cylindrical member is accommodated in the circumferential groove so that both ends thereof are on the front and rear end portions of the circumferential groove. 2. The drug application tube according to claim 1, wherein a fluid introduction hole is provided in the distal end portion of the tube main body so as to communicate from the fluid conduction lumen into the expansion member. 拡張部材の外周面の複数個所に薬剤保持凹部を設けていることを特徴とする請求項１又は請求項２に記載の薬剤塗布チューブ。   The drug application tube according to claim 1 or 2, wherein a drug holding recess is provided at a plurality of locations on the outer peripheral surface of the expansion member. 薬剤保持凹部は拡張部材の長さ方向又は周方向に設けられた複数の溝からなることを特徴とする請求項１、請求項２又は請求項３に記載の薬剤塗布チューブ。   The drug application tube according to claim 1, 2 or 3, wherein the drug holding recess comprises a plurality of grooves provided in a length direction or a circumferential direction of the expansion member.
JP2006350908A 2006-12-27 2006-12-27 Medicine application tube Pending JP2008161237A (en)

Priority Applications (1)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010154919A (en) * 2008-12-26 2010-07-15 Fujifilm Corp Auxiliary tool for nasal cavity dilation
JP2018171318A (en) * 2017-03-31 2018-11-08 テルモ株式会社 Medical long body
CN116808415A (en) * 2023-08-28 2023-09-29 四川省医学科学院·四川省人民医院 Cavity medicine supply device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010154919A (en) * 2008-12-26 2010-07-15 Fujifilm Corp Auxiliary tool for nasal cavity dilation
JP2018171318A (en) * 2017-03-31 2018-11-08 テルモ株式会社 Medical long body
CN116808415A (en) * 2023-08-28 2023-09-29 四川省医学科学院·四川省人民医院 Cavity medicine supply device
CN116808415B (en) * 2023-08-28 2023-11-07 四川省医学科学院·四川省人民医院 Cavity medicine supply device

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