WO2001060260A1 - Medical aspirating tube utilizing capillarity - Google Patents

Medical aspirating tube utilizing capillarity Download PDF

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Publication number
WO2001060260A1
WO2001060260A1 PCT/JP2001/000828 JP0100828W WO0160260A1 WO 2001060260 A1 WO2001060260 A1 WO 2001060260A1 JP 0100828 W JP0100828 W JP 0100828W WO 0160260 A1 WO0160260 A1 WO 0160260A1
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Prior art keywords
suction tube
inner cylinder
suction
medical
outer cylinder
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Application number
PCT/JP2001/000828
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French (fr)
Japanese (ja)
Inventor
Tomoaki Koseki
Original Assignee
Matsuda Medical Co.,Ltd
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Publication date
Application filed by Matsuda Medical Co.,Ltd filed Critical Matsuda Medical Co.,Ltd
Publication of WO2001060260A1 publication Critical patent/WO2001060260A1/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/84—Drainage tubes; Aspiration tips

Definitions

  • the present invention relates to a medical suction tube used during a surgical operation.
  • Conventional technology is a medical suction tube used during a surgical operation.
  • the suction force will concentrate and not only the blood or saline solution to be aspirated but also the surrounding tissues and nerves will be adsorbed.
  • the blood vessels themselves are thin, and in the case of a newborn baby, even if the blood vessels are thick, such as the pulmonary artery, closing the suction tube will block the entire blood vessel.
  • careful dissection is performed to prevent damage to the nerves, but suction is not used to ensure visual field. Attachment of the suction tube to the nerve may sometimes cause serious nerve paralysis, and a rubber tube is connected to the tip of the suction tube to avoid nerve damage.
  • the suction tube has a vertically long hole shape or a plurality of holes, as long as the structure is a single cylinder, it only sucks air and reduces the suction force, and the original suction function cannot be satisfied.
  • conventional suction tubes it is difficult to adjust the suction force, and there is always a hole for adjustment at hand. The surgeon presses his / her finger here and is obliged to perform operations such as sucking the tip if it is closed, and not sucking the tip if it is open.
  • the hole at the tip does not necessarily suck only liquid, but absorbs blood clots, tissue sections, bone fragments, etc. If this happens, the suction tube will be clogged and the operation will have to be interrupted. In hernia resection, multiple suction tubes must be prepared because the tissue to be removed is frequently adsorbed during the operation, and the clogged suction tubes must be cleaned with a thin wire called mandolin.
  • the present invention provides a suction pipe having a multi-layer structure of an outer cylinder and an inner cylinder, innumerable holes in the outer cylinder and the inner cylinder, and an outer cylinder and an inner cylinder or an inner cylinder and an inner cylinder.
  • the gap between them was set to be narrow enough to cause the capillary phenomenon of blood, or a water-absorbing material was installed between them, so that blood was adsorbed from the surface of the outer cylinder and sucked from the innermost inner cylinder.
  • FIG. 1 illustrates a suction tube according to claim 1.
  • Blood adsorbed from the innumerable holes of the outer cylinder 1 reaches the surface of the outer cylinder 2 by capillary action.
  • Countless holes are also formed on the surface of the inner cylinder 2, and blood is sucked by the inner cylinder 2 for the first time here.
  • Blood reaches the surface of the outer cylinder 1 from the outer cylinder 1 to the surface of the inner cylinder 2 by capillary action, and since the number of holes is large, almost no suction force is generated on the surface of the outer cylinder 1. Only blood or saline that has come into contact with the outer cylinder 1 surface is aspirated.
  • the outer shape is generally a cylinder, but may be an elliptical cylinder or the like depending on the insertion site. If metal is used, such as stainless steel or brass, it can be reused.However, it is expected that it will be difficult to clean the details, so use a polymer material such as polystyrene or polyvinyl chloride, and dispose of it. Les ,. If polypropylene, PVC, Teflon, polyurethane, etc. are processed flexibly and the suction tube is formed, it can be installed deep in the surgical field, in the gap between organs, etc., and continuous suction can be performed without performing a suction operation.
  • FIG. 2 shows an example in which a water-absorbing material 3 is provided between the outer cylinder 1 and the inner cylinder 2 according to the second embodiment.
  • a double structure of outer tube 1 and inner tube 2 may be used, There is a limit to the thickness at which the tube phenomenon occurs. If the suction tube itself is made thicker, it is possible to secure the capillary phenomenon by stacking the cylinder structure in three or four layers, but this will increase the cost. Therefore, a highly water-absorbing material such as a cellulose sponge is provided between the outer cylinder 1 and the inner cylinder 2 so that the adsorbed blood can reach the inner cylinder 2.
  • FIG. 3 shows a medical hook according to claim 3.
  • the hook pulls the tissue to prevent contact with instruments such as blades and to secure the surgeon's field of view.
  • the suction tube 4a may be connected along the handle of the hook, but the same effect can be obtained by forming the suction tube itself according to claim 1 flat and connecting the handle.
  • FIG. 4 shows a medical tweezer according to claim 4.
  • the suction tube 4b may be connected to one or both of the two plates forming the tweezers, but the suction tube itself according to claim 1 is formed as one or both plates and bonded together with a suction function. Tweezers may be used.
  • FIG. 5 shows a medical forceps according to claim 5. This forceps removes bone fragments.
  • the suction tube 4c may be connected to the distal end, but the distal end portion may be processed as the suction tube structure to provide an osteotomy forceps with a suction function.
  • FIG. 6 shows a trocar for inserting a tool or a scope during the endoscopic operation according to claim 6 and incorporating the suction tube 4d and having a suction function.
  • the lower part of the trocar is always in contact with the operative field, and if a suction function is provided around the entire lower part, suction can be performed without obstructing the surgeon's visual field.
  • the present invention is embodied in the form described above and has the following effects. Adhesion of the outer cylinder surface does not occur due to the multiple structure of the outer cylinder and the inner cylinder. Therefore, only the blood to be aspirated and physiological saline for washing are aspirated, and the surrounding tissues and nerves are not absorbed. Avoid vascular occlusion in pediatric cardiovascular surgery and nerve paralysis in brain and spine surgery. High suction efficiency, no operator's manual operation is required, and cleaning due to clogged tubes is not required. You.
  • FIG. 1 is a cross-sectional view and an external view of a suction tube.
  • FIG. 2 is a cross-sectional view of a suction tube provided with a water-absorbing material.
  • Figure 3 is an external view of the hook connected to the suction tube.
  • Fig. 4 is an external view of tweezers connected to a suction tube.
  • FIG. 5 is an external view of a forceps to which a suction tube is connected.
  • FIG. 6 is an external view of a trocar to which a suction tube is connected. Explanation of reference numerals

Abstract

An aspirating tube having a multi-construction consisting of outer and inner sleeves, wherein capillarity is utilized, whereby the aspirating tube is free from surface adsorption, has a high aspiration efficiency, and does not need operating or cleaning; and an instrument or the like having the functions of such aspirating tube.

Description

明 細 書 毛細管現象を利用した医療用吸引管 発明の属する技術分野  Description Medical suction tube utilizing capillary action Technical field to which the invention pertains
本発明は外科手術の際使用する医療用吸引管に関する。 従来の技術  The present invention relates to a medical suction tube used during a surgical operation. Conventional technology
従来の医療用吸引管はすべて一重構造の筒で、 管の先に穴が明いているだけのもの が多く、 稀に筒の横にスリ ッ トのように縦長の穴が明いているものがある。 鈎やピン セット等に組み込まれたものでも同様に一重構造の筒が組み込まれている。 発明が解決しようとする課題  Conventional medical suction tubes are all single-walled tubes, most of which only have a hole at the end of the tube, and rarely have a vertically long hole like a slit beside the tube. is there. Single-structured cylinders are also incorporated in hooks and tweezers. Problems to be solved by the invention
管の先だけに穴が明いていると吸引力が集中し、 本来吸引すべき血液や洗浄用の生 理食塩水だけでなく、 周囲の組織や神経を吸着してしまう。 小児心臓血管外科では血 管自体が細く、 新生児の場合肺動脈等太い血管であっても吸引管を近づけると血管全 体を閉塞させてしまう。 脳外科や脊椎外科では神経を損傷しないように慎重な剥離を 行うが、 視野を確保するために吸引作業は力かせない。 吸引管の神経への吸着は時に 重大な神経麻痺を起こす恐れがあり、 吸引管先端にゴム管等を接続して神経損傷を回 避している。  If a hole is formed only at the end of the tube, the suction force will concentrate and not only the blood or saline solution to be aspirated but also the surrounding tissues and nerves will be adsorbed. In pediatric cardiovascular surgery, the blood vessels themselves are thin, and in the case of a newborn baby, even if the blood vessels are thick, such as the pulmonary artery, closing the suction tube will block the entire blood vessel. In neurosurgery and spinal surgery, careful dissection is performed to prevent damage to the nerves, but suction is not used to ensure visual field. Attachment of the suction tube to the nerve may sometimes cause serious nerve paralysis, and a rubber tube is connected to the tip of the suction tube to avoid nerve damage.
吸引管の穴形状が縦長であったり、 穴数が複数であっても構造が一重の筒である限 り、 空気を吸って吸引力を落とすだけであり、 本来の吸引機能を満足できなくなる。 従来の吸引管は吸引力の加減が難しく、 手元には必ず調整用の穴が明いている。 術 者はここに指を押し当て、 塞いだ状態であれば先端は吸引、 明けておけば先端は吸引 しなレ、、 といった操作を強いられている。  Even if the suction tube has a vertically long hole shape or a plurality of holes, as long as the structure is a single cylinder, it only sucks air and reduces the suction force, and the original suction function cannot be satisfied. With conventional suction tubes, it is difficult to adjust the suction force, and there is always a hole for adjustment at hand. The surgeon presses his / her finger here and is obliged to perform operations such as sucking the tip if it is closed, and not sucking the tip if it is open.
また先端の穴は液体だけを吸ってくるとは限らず、 血塊、 組織切片、 骨片等を吸着 してしまうと吸引管は詰まり、 手術は中断せざるを得ない。 ヘルニア摘出術では術中 に摘出組織を頻繁に吸着するため、 複数の吸引管を準備する必要があり、 詰まった吸 引管はマンドリンと呼ばれる細い針金により内部を掃除しなければならない。 課題を解決するための手段 In addition, the hole at the tip does not necessarily suck only liquid, but absorbs blood clots, tissue sections, bone fragments, etc. If this happens, the suction tube will be clogged and the operation will have to be interrupted. In hernia resection, multiple suction tubes must be prepared because the tissue to be removed is frequently adsorbed during the operation, and the clogged suction tubes must be cleaned with a thin wire called mandolin. Means for solving the problem
上記の問題点を解決するために、 本発明は、 吸引管を外筒と内筒の多重構造とし、 外筒及び内筒に無数の穴を明け、 外筒と内筒又は内筒と内筒の隙間を血液の毛細管現 象が起こる程度に狭く設定し又はその間に吸水性素材を設置し、 外筒表面から血液を 吸着し、 最も内側の内筒から吸引する構造とした。 発明の実施の形態  In order to solve the above problems, the present invention provides a suction pipe having a multi-layer structure of an outer cylinder and an inner cylinder, innumerable holes in the outer cylinder and the inner cylinder, and an outer cylinder and an inner cylinder or an inner cylinder and an inner cylinder. The gap between them was set to be narrow enough to cause the capillary phenomenon of blood, or a water-absorbing material was installed between them, so that blood was adsorbed from the surface of the outer cylinder and sucked from the innermost inner cylinder. Embodiment of the Invention
以下、 本発明の実施の形態を図面に基づいて説明する。 図 1は請求項 1に係る吸引 管を例示している。 外筒 1の無数の穴から吸着された血液は毛細管現象により內筒 2 表面に到達する。 内筒 2表面にも無数の穴が形成されており、 血液はここで初めて内 筒 2により吸引される。 外筒 1から内筒 2表面への血液の到達は毛細管現象によるも のであり、 穴の数が多いため外筒 1表面にはほとんど吸引力が発生しない。 外筒 1表 面に接触した血液或いは生理食塩水のみが吸引される。 外筒 1に部分的に血液が接触 している場合でも毛細管現象により血液は瞬時に外筒 1と内筒 2の隙間全周へ入り込 み、 空気を吸い込みにくく、 吸引効率が高い。 外形状は一般的に円柱であるが、 挿入 部位などによって楕円柱などとしてもよい。 素材はステンレス、 真鍮等の金属を用い た場合再使用可となるが、 細部の洗浄が困難であることが予想されるので、 ポリプ口 ピレン、塩ビ等の高分子素材を用い、使い捨てとしてもょレ、。ポリプロピレン、塩ビ、 テフロン、 ポリウレタン等を柔軟に加工し、 該吸引管を形成すると術野の奥深く、 臓 器の隙間等に設置でき、 吸引操作を行うことなく持続吸引が可能となる。  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 illustrates a suction tube according to claim 1. Blood adsorbed from the innumerable holes of the outer cylinder 1 reaches the surface of the outer cylinder 2 by capillary action. Countless holes are also formed on the surface of the inner cylinder 2, and blood is sucked by the inner cylinder 2 for the first time here. Blood reaches the surface of the outer cylinder 1 from the outer cylinder 1 to the surface of the inner cylinder 2 by capillary action, and since the number of holes is large, almost no suction force is generated on the surface of the outer cylinder 1. Only blood or saline that has come into contact with the outer cylinder 1 surface is aspirated. Even when blood is partially in contact with the outer cylinder 1, the blood instantaneously enters the entire circumference of the gap between the outer cylinder 1 and the inner cylinder 2 due to the capillary phenomenon, so that it is difficult to inhale air and the suction efficiency is high. The outer shape is generally a cylinder, but may be an elliptical cylinder or the like depending on the insertion site. If metal is used, such as stainless steel or brass, it can be reused.However, it is expected that it will be difficult to clean the details, so use a polymer material such as polystyrene or polyvinyl chloride, and dispose of it. Les ,. If polypropylene, PVC, Teflon, polyurethane, etc. are processed flexibly and the suction tube is formed, it can be installed deep in the surgical field, in the gap between organs, etc., and continuous suction can be performed without performing a suction operation.
図 2は請求項 2に係る外筒 1と内筒 2の間に吸水性素材 3を設置した例である。 術 野が狭く、 吸引管自体が細くてよい場合は外筒 1、 内筒 2の二重構造でよいが、 毛細 管現象が内部で起こる太さには限界がある。 吸引管自体を太くする場合、 筒構造を三 重、 四重と重ねていけば毛細管現象を確保できるが、 コストがかかる。 そこで外筒 1 と内筒 2の間にセルローススポンジ等の吸水性の高い素材を設置し、 吸着された血液 を内筒 2に到達させることが可能となる。 FIG. 2 shows an example in which a water-absorbing material 3 is provided between the outer cylinder 1 and the inner cylinder 2 according to the second embodiment. If the operative field is narrow and the suction tube itself needs to be thin, a double structure of outer tube 1 and inner tube 2 may be used, There is a limit to the thickness at which the tube phenomenon occurs. If the suction tube itself is made thicker, it is possible to secure the capillary phenomenon by stacking the cylinder structure in three or four layers, but this will increase the cost. Therefore, a highly water-absorbing material such as a cellulose sponge is provided between the outer cylinder 1 and the inner cylinder 2 so that the adsorbed blood can reach the inner cylinder 2.
図 3は請求項 3に係る医療用鈎を示している。 鈎は組織を引っ張り、 刃物等の器具 が接触しないようにしたり、 術者の視野を確保したりするものである。 鈎の柄に沿つ て該吸引管 4 aを接続してもよいが、 請求項 1記載の吸引管自体を扁平に形成し、 柄 を接続しても同じ効果が得られる。  FIG. 3 shows a medical hook according to claim 3. The hook pulls the tissue to prevent contact with instruments such as blades and to secure the surgeon's field of view. The suction tube 4a may be connected along the handle of the hook, but the same effect can be obtained by forming the suction tube itself according to claim 1 flat and connecting the handle.
図 4は請求項 4に係る医療用ピンセットを示している。 ピンセットを形成する 2枚 の板の片方或いは両方に該吸引管 4 bを接続してもよいが、 請求項 1記載の吸引管自 体を片方或いは両方の板として形成し貼り合わせ、 吸引機能付きピンセットとしても よい。  FIG. 4 shows a medical tweezer according to claim 4. The suction tube 4b may be connected to one or both of the two plates forming the tweezers, but the suction tube itself according to claim 1 is formed as one or both plates and bonded together with a suction function. Tweezers may be used.
図 5は請求項 5に係る医療用鉗子を示している。 この鉗子は骨片を切除するもので ある。 先端に該吸引管 4 cを接続してもよいが、 先端部分を該吸引管構造として加工 し、 吸引機能付き骨切除鉗子としてもよい。  FIG. 5 shows a medical forceps according to claim 5. This forceps removes bone fragments. The suction tube 4c may be connected to the distal end, but the distal end portion may be processed as the suction tube structure to provide an osteotomy forceps with a suction function.
図 6は請求項 6に係る内視鏡手術の際、器具やスコープを揷入するための筒であり、 該吸引管 4 dを組み込み吸引機能を持たせたトラカールを示している。 トラカール下 部は常に術野に接触しており、 下部全周に吸引機能をもたせると術者の視野を妨げず に吸引が可能となる。 発明の効果  FIG. 6 shows a trocar for inserting a tool or a scope during the endoscopic operation according to claim 6 and incorporating the suction tube 4d and having a suction function. The lower part of the trocar is always in contact with the operative field, and if a suction function is provided around the entire lower part, suction can be performed without obstructing the surgeon's visual field. The invention's effect
本発明は以上説明したような形態で実施され以下に記載されるような効果を奏する。 外筒、 内筒の多重構造にすることにより、 外筒表面の吸着が発生しない。 従って、 本来吸引すべき血液や洗浄用の生理食塩水のみを吸引し、 周囲の組織や神経を吸着し ない。小児心臓血管外科での血管閉塞、脳外科や脊椎外科での神経麻痺等を回避する。 吸引効率が高く、 術者の手元操作が不要であり、 管の詰まりによる掃除も不要とな る。 The present invention is embodied in the form described above and has the following effects. Adhesion of the outer cylinder surface does not occur due to the multiple structure of the outer cylinder and the inner cylinder. Therefore, only the blood to be aspirated and physiological saline for washing are aspirated, and the surrounding tissues and nerves are not absorbed. Avoid vascular occlusion in pediatric cardiovascular surgery and nerve paralysis in brain and spine surgery. High suction efficiency, no operator's manual operation is required, and cleaning due to clogged tubes is not required. You.
外筒の表面吸着がないので、 鈎、 ピンセット、 鉗子、 トラ力一ル等術中の継続操作 に関わる器具に容易に取りつけが可能となる。 術者は吸引に関わるトラブルに神経を 尖らせることもなく、 器具類に吸引機能が設置されていることにより、 本来の吸引管 単体の使用頻度も減少し、 手術時間の短縮につながる。 図面の簡単な説明  Since there is no surface adsorption of the outer cylinder, it can be easily attached to instruments related to continuous operation during surgery, such as hooks, tweezers, forceps, and tiger forceps. The surgeon does not sharpen nerves for problems related to suction, and the suction function installed in the instruments reduces the frequency of using the original suction tube alone, leading to a reduction in operation time. BRIEF DESCRIPTION OF THE FIGURES
図 1は、 吸引管の断面図及び外観図である。  FIG. 1 is a cross-sectional view and an external view of a suction tube.
図 2は、 吸水性素材を設置した吸引管の断面図である。  FIG. 2 is a cross-sectional view of a suction tube provided with a water-absorbing material.
図 3は、 吸引管を接続した鈎の外観図である。  Figure 3 is an external view of the hook connected to the suction tube.
図 4は、 吸引管を接続したピンセットの外観図である。  Fig. 4 is an external view of tweezers connected to a suction tube.
図 5は、 吸引管を接続した鉗子の外観図である。  FIG. 5 is an external view of a forceps to which a suction tube is connected.
図 6は、 吸引管を接続したトラカールの外観図である。 符号の説明  FIG. 6 is an external view of a trocar to which a suction tube is connected. Explanation of reference numerals
1 外筒  1 outer cylinder
2 内筒  2 Inner cylinder
3 吸水性素材  3 Water-absorbing material
4 a、 4 b、 4 c、 4 d 吸引管  4a, 4b, 4c, 4d suction tube

Claims

請 求 の 範 囲 The scope of the claims
1 . 外筒及び一又は複数の内筒に無数の穴を明け、 外筒と内筒又は内筒と内筒 の隙間を血液の毛細管現象が起こる程度に狭く設定し、 外筒表面から血液を吸着し、 最も内側の内筒から吸引する構造を持つ医療用吸引管。 1. Drill innumerable holes in the outer cylinder and one or more inner cylinders, set the gap between the outer cylinder and the inner cylinder or the gap between the inner cylinder and the inner cylinder to be small enough to cause blood capillary action. A medical suction tube with a structure that sucks and suctions from the innermost inner cylinder.
2 . 外筒と内筒又は内筒と内筒の隙間を一定間隔とし、 この間に吸水性素材を 設置した請求項 1記載の医療用吸引管。  2. The medical suction tube according to claim 1, wherein a gap between the outer cylinder and the inner cylinder or a gap between the inner cylinder and the inner cylinder is fixed, and a water-absorbing material is provided therebetween.
3 . 請求項 1及び 2記載の吸引管を組み込み、 吸引しながら組織や神経を引つ 張ることができる医療用鈎。  3. A medical hook that incorporates the suction tube according to claim 1 and that can pull a tissue or nerve while suctioning.
4 . 請求項 1及び 2記載の吸引管を組み込み、 吸引しながら組織を挟むことが できる医療用ピンセット。  4. Medical tweezers incorporating the suction tube according to claims 1 and 2 and capable of sandwiching tissue while suctioning.
5 . 請求項 1及び 2記載の吸引管を組み込み、 吸引しながら組織を挟み或いは 削り取ることができる医療用鉗子。  5. A medical forceps that incorporates the suction tube according to claim 1 and that can pinch or scrape tissue while aspirating.
6 . 内視鏡手術の際、 器具やスコープを挿入するための筒であり、 請求項 1及 び 2記載の吸引管を組み込み吸引機能を持たせたトラカール。  6. A trocar, which is a tube into which instruments or scopes are inserted during endoscopic surgery, and which has a suction function by incorporating the suction tube according to claim 1 or 2.
PCT/JP2001/000828 2000-02-21 2001-02-06 Medical aspirating tube utilizing capillarity WO2001060260A1 (en)

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JP2000105542A JP2001231850A (en) 2000-02-21 2000-02-21 Medical suction tube utilizing capillary phenomenon
JP2000-105542 2000-02-21

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US11752300B2 (en) 2015-07-20 2023-09-12 Roivios Limited Catheter device and method for inducing negative pressure in a patient's bladder
US11896785B2 (en) 2015-07-20 2024-02-13 Roivios Limited Ureteral and bladder catheters and methods of inducing negative pressure to increase renal perfusion
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US20200215304A1 (en) * 2015-07-20 2020-07-09 Strataca Systems Limited Ureteral catheters, bladder catheters, systems, kits and methods for inducing negative pressure to increase renal function
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US11904121B2 (en) 2015-07-20 2024-02-20 Roivios Limited Negative pressure therapy system
US11918754B2 (en) 2015-07-20 2024-03-05 Roivios Limited Ureteral and bladder catheters and methods of inducing negative pressure to increase renal perfusion

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