JP2002272755A - Trocar catheter - Google Patents
Trocar catheterInfo
- Publication number
- JP2002272755A JP2002272755A JP2001073142A JP2001073142A JP2002272755A JP 2002272755 A JP2002272755 A JP 2002272755A JP 2001073142 A JP2001073142 A JP 2001073142A JP 2001073142 A JP2001073142 A JP 2001073142A JP 2002272755 A JP2002272755 A JP 2002272755A
- Authority
- JP
- Japan
- Prior art keywords
- catheter
- trocar
- mantle
- flat
- cross
- 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
Landscapes
- Media Introduction/Drainage Providing Device (AREA)
- External Artificial Organs (AREA)
- Surgical Instruments (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、胸腔に貯留した気
体や液体を排出するために使用し、患者に対して低侵襲
で且つより安全性を向上させたトロカールカテーテルに
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trocar catheter which is used for discharging gas and liquid stored in a thoracic cavity and which is less invasive to a patient and has improved safety.
【０００２】[0002]
【従来の技術】医療分野において、手術後にその創部か
ら滲出する血液や体液、或いは気胸患者の胸腔にある空
気を排出するための医療用具としてトロカールカテーテ
ルがある。本品は刺入部位に局所麻酔を行い皮膚に小切
開を加えてトロカールカテーテルを挿入し、カテーテル
をある程度挿入した時点で、カテーテル内腔の金属針を
引き抜く。その後、所望の留置位置までカテーテル先端
を挿入し留置を行う。2. Description of the Related Art In the medical field, there is a trocar catheter as a medical device for discharging blood or body fluid exuding from a wound after surgery or air in a thoracic cavity of a pneumothorax patient. In this product, local anesthesia is performed at the insertion site, a small incision is made in the skin, a trocar catheter is inserted, and when the catheter is inserted to some extent, the metal needle in the catheter lumen is pulled out. Thereafter, the distal end of the catheter is inserted to a desired indwelling position and is indwelled.
【０００３】正常の胸腔内は常に陰圧（−５〜−２０ｃ
ｍＨ2Ｏ）に保たれることで、肺は持続的に膨張してい
るが、気胸、胸部外傷などにより乱されると、肺が十分
膨張できずに換気障害を生じる。また、胸腔内に胸水や
血液が貯留すると、呼吸機能以外に心臓のポンプ機能も
危険な状態に陥る。トロカールカテーテルを使用するこ
とにより陽圧となった胸腔内を排気して陰圧に戻し、胸
腔内に貯留した胸水や血液の排出を行い、最小の穿刺孔
で感染の危険性を最小限に抑えることが可能となる。In a normal thoracic cavity, a negative pressure (−5 to −20c) is always used.
Although the lungs are constantly inflated by keeping the pressure at mH 2 O), if disturbed by pneumothorax, chest trauma, or the like, the lungs cannot be sufficiently inflated, resulting in ventilation problems. Also, if pleural effusion or blood accumulates in the thoracic cavity, the pump function of the heart as well as the respiratory function falls into a dangerous state. The use of a trocar catheter evacuates the thoracic cavity, which has become positive pressure, to return to negative pressure, drains pleural effusion and blood stored in the thoracic cavity, and minimizes the risk of infection with a minimum puncture hole It becomes possible.
【０００４】一般的に肋間（肋骨の間）を通り肺を避け
るように胸腔内にカテーテルを挿入し、図３に示すよう
に排出物が気体の場合は肺の上側に、液体の場合は肺の
下側にカテーテル先端が留置される。ところで、従来の
トロカールカテーテルの断面形状は図４のようにほぼ円
形形状であり、大きく屈曲させた場合にキンク（折れて
カテーテル内腔が閉塞すること）する可能性があり、逆
にキンクしない場合にはカテーテルの腰が強すぎるため
であり、カテーテル先端部や肋間通過部が肋間神経を圧
迫し患者が痛がるという相反する問題があった。更に患
者の皮膚の穿刺孔が丸穴となるためカテーテル抜去後に
塞がり難いといった問題もあった。In general, a catheter is inserted into the thoracic cavity so as to pass through the intercostal space (between the ribs) to avoid the lungs. As shown in FIG. The catheter tip is indwelled underneath. By the way, the cross-sectional shape of the conventional trocar catheter is almost circular as shown in FIG. 4, and there is a possibility of kinking (breaking and closing the catheter lumen) when greatly bent, and This is because the catheter is too stiff, and there is a conflicting problem that the catheter tip and the intercostal passage press against the intercostal nerve and cause pain to the patient. Furthermore, since the puncture hole of the patient's skin becomes a round hole, there is also a problem that it is difficult to close the catheter after removing the catheter.
【０００５】これらの問題を解決すべく本発明者らは特
開平８−３１３１７７号公報で金属針と外套カテーテル
を組み合わせたトロカールカテーテルにおいて、外套カ
テーテルの断面が扁平であることを特徴とするトロカー
ルカテーテルを開示した。これにより、カテーテルを屈
曲させるように留置しても図５（ｃ）のようにキンク時
にカテーテル中央部はつぶれ閉塞するが両端のルートは
閉塞せず、しかもカテーテルの曲げ弾性が低いため、肋
間神経を圧迫することなく安全かつ低侵襲の挿入が可能
であり、皮膚の穿刺孔が扁平なためカテーテルの抜去後
速やかに塞がるトロカールカテーテルを提案した。In order to solve these problems, the present inventors have disclosed in Japanese Patent Application Laid-Open No. Hei 8-313177 a trocar catheter comprising a combination of a metal needle and an outer catheter, wherein the cross section of the outer catheter is flat. Was disclosed. As a result, even if the catheter is placed so as to be bent, the central portion of the catheter is crushed and closed at the time of kink as shown in FIG. 5 (c), but the routes at both ends are not blocked, and the bending elasticity of the catheter is low. We have proposed a trocar catheter that allows safe and minimally invasive insertion without squeezing, and that closes quickly after removal of the catheter because the puncture hole in the skin is flat.
【０００６】しかしながら、キンクに対しては克服でき
たが、臨床使用時、カテーテルの単なるキンクに加えカ
テーテルのねじれが生じることによる流量の低下、或い
はカテーテルが完全に閉塞した状態となった場合に図５
のように断面形状が円形のカテーテルに比べ改善はする
ものの充分な流路の確保ができなかった。[0006] However, it was possible to overcome the problem of kink, but in clinical use, the flow rate was reduced due to twisting of the catheter in addition to the mere kink of the catheter, or the catheter became completely occluded. 5
As compared with a catheter having a circular cross section as described above, a sufficient flow path could not be secured, although it was improved.
【０００７】一方、断面形状を扁平にすることは他に特
開平１０−１１８１９０号公報や特開平１１−２２１２
８６号公報にも開示されているが、前者は咽頭部及び食
道の内圧で断面形状が扁平に変形するような柔軟性を有
するか、或いは初めから断面形状が扁平に形成されてい
ることにより挿入時の痛みや留置時の違和感を軽減し、
咽頭部及び食道等の内壁面を圧迫しないことに重点を置
いている。そのため、扁平断面形状であることによる耐
キンク性の効果を目的としていない。後者はカテーテル
内腔が円形形状となっているため前記に示したとおり、
従来の断面形状が円形カテーテルと同様、カテーテルを
大きく屈曲させた場合には内腔が閉塞しキンクに対する
効果が発揮され難く、胸腔用途のカテーテルとしては満
足するものではなかった。On the other hand, flattening of the cross-sectional shape is also disclosed in Japanese Patent Application Laid-Open Nos. 10-118190 and 11-2212.
No. 86, it is disclosed that the former has flexibility such that the cross-sectional shape is deformed flat by the internal pressure of the pharynx and esophagus, or is inserted because the cross-sectional shape is formed flat from the beginning. Reduces pain at the time and discomfort at the time of detention,
The emphasis is on avoiding pressure on the inner walls of the pharynx and esophagus. Therefore, the effect of kink resistance due to the flat cross-sectional shape is not intended. The latter, as shown above, because the catheter lumen has a circular shape,
Similar to a conventional circular catheter having a cross-sectional shape, when the catheter is greatly bent, the lumen is obstructed and the effect on kink is hardly exerted, and it has not been satisfactory as a catheter for thoracic cavity.
【０００８】[0008]
【発明が解決しようとする課題】本発明は、従来のこの
ような問題点を解決することを目的とするもので、カテ
ーテルを屈曲させるように留置してもキンクせず、しか
も肋間神経を圧迫しないため安全かつ低侵襲で、万が一
カテーテルがねじれても吸引可能であり、皮膚の穿刺孔
が扁平なためカテーテルの抜去後速やかに塞がるトロカ
ールカテーテルを提供するものである。SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems. The catheter does not kink even if the catheter is placed in a bent state, and the intercostal nerve is compressed. The present invention provides a trocar catheter which is safe and minimally invasive, can suction even if the catheter is twisted, and closes promptly after removal of the catheter because the puncture hole in the skin is flat.
【０００９】[0009]
【課題を解決するための手段】即ち本発明は、（１）金
属針と外套カテーテルを組み合わせたトロカールカテー
テルにおいて、外套カテーテル断面が扁平形状であっ
て、扁平形状における長径側の肉厚に対する短径側の肉
厚の比率が３０〜７０％の範囲であることを特徴とする
トロカールカテーテル、（２）外套カテーテルの扁平断
面形状において長径に対する短径の比率が３０〜７０％
の範囲である（１）記載のトロカールカテーテル、
（３）外套カテーテルは、長手方向へ延びたサブルーメ
ンが少なくとも１つ設けてある（１）又は（２）記載の
トロカールカテーテル、（４）外套カテーテル内腔に、
長手方向へ延びたリブが少なくとも１つ設けてある
（１）〜（３）記載のいずれかのトロカールカテーテ
ル、（５）トロカールカテーテルの内面及び外面の少な
くとも一方の面の一部又は全部に潤滑性処理が施されて
いる（１）〜（４）記載のいずれかのトロカールカテー
テルである。The present invention provides (1) a trocar catheter having a combination of a metal needle and an outer catheter, wherein the outer catheter has a flat cross-section and a shorter diameter than the longer-side wall thickness in the flat shape. A trocar catheter having a side wall thickness ratio in the range of 30 to 70%, and (2) a ratio of the short diameter to the long diameter in the flat cross-sectional shape of the mantle catheter is 30 to 70%.
The trocar catheter according to (1), wherein
(3) The trocar catheter according to (1) or (2), in which at least one sublumen extending in the longitudinal direction is provided, (4) the inner lumen of the outer catheter,
The trocar catheter according to any one of (1) to (3), wherein at least one rib extending in the longitudinal direction is provided, and (5) lubricity is provided on at least one of the inner surface and the outer surface of the trocar catheter. The trocar catheter according to any one of (1) to (4), wherein the trocar catheter has been treated.
【００１０】[0010]
【発明の実施の形態】以下、図面をもとに本発明につい
て詳細に説明する。図１は本発明の一実施例のトロカー
ルカテーテルの概略図、図２は本発明のトロカールカテ
ーテルの他の実施例の概略図、図３は本発明のトロカー
ルカテーテルを胸腔内に留置した状態を示す概略図、図
４は断面形状が円形の従来のトロカールカテーテルの概
略図、図５は断面形状が扁平であり肉厚が均等なトロカ
ールカテーテルの概略図、図６は本発明の一実施例（長
径、短径肉厚比３０〜７０％）とトロカールカテーテル
のカテーテルの曲げ角度と流量の関係を示す図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings. FIG. 1 is a schematic view of a trocar catheter according to one embodiment of the present invention, FIG. 2 is a schematic view of another embodiment of the trocar catheter of the present invention, and FIG. 3 shows a state where the trocar catheter of the present invention is indwelled in the thoracic cavity. FIG. 4 is a schematic view of a conventional trocar catheter having a circular cross-sectional shape, FIG. 5 is a schematic view of a trocar catheter having a flat cross-sectional shape and an even wall thickness, and FIG. FIG. 3 is a diagram showing the relationship between the flow rate and the flow angle of the trocar catheter (short diameter wall thickness ratio 30 to 70%).
【００１１】図１に示すように本発明のトロカールカテ
ーテルは、金属針（１）と外套カテーテル（３）とで構
成されている。金属針（１）の材質は特に限定されるも
のではないが、ステンレスやアルミ等の金属加工品から
成る。金属針（１）の断面形状は外套カテーテル（３）
内腔に合わせた扁平形状か内腔の短径に合わせた円形で
あり、その先端部は外套カテーテル（３）の先端チップ
（４）とフックするための段差が設けられ、近位端は術
者が保持するためのグリップ球（２）が設けられてい
る。更に金属針（１）の断面形状は外套カテーテル
（３）の先端チップ（４）とフックするための段差部分
のみ扁平形状を有し、そこからグリップ球（２）の近位
端までは円形であっても差し支えない。As shown in FIG. 1, the trocar catheter of the present invention comprises a metal needle (1) and an outer catheter (3). The material of the metal needle (1) is not particularly limited, but is made of a metal processed product such as stainless steel or aluminum. The cross-sectional shape of the metal needle (1) is a mantle catheter (3)
It has a flat shape that matches the lumen or a circle that matches the minor axis of the lumen. The distal end is provided with a step for hooking with the distal tip (4) of the mantle catheter (3), and the proximal end is operated. A grip ball (2) for holding by a person is provided. Further, the cross-sectional shape of the metal needle (1) has a flat shape only at the stepped portion for hooking with the distal tip (4) of the mantle catheter (3), and is circular from there to the proximal end of the grip ball (2). There is no problem.
【００１２】外套カテーテル（３）の材質は特に限定さ
れるものではないが塩化ビニール樹脂やウレタン樹脂等
の軟質プラスチック製であり、扁平形状における長径側
の肉厚に対する短径側の肉厚の比率が３０〜７０％の押
出チューブが好ましい。これは７０％を超えると従来の
技術で示したとおりカテーテルにねじれが生じることに
よる吸引容量の低下或いは短径側の肉厚を著しく増加さ
せることで内腔が狭まることによる吸引容量の低下が起
こる。また、３０％未満であるとカテーテルを固定する
ための縫合時、カテーテルが凹型に変形し易くなり、胸
腔内の気密性が保てず、胸壁とカテーテルの隙間からリ
ークすることが懸念される。更にカテーテルの腰が無く
なり挿入時にはカテーテル先端部分を所望の留置位置に
誘導できなくなる可能性がある。実用性を考えると寸法
は長径側の肉厚は０．５〜２．０ｍｍ、短径側の肉厚は
０．１５〜１.４ｍｍが好ましい。The material of the mantle catheter (3) is not particularly limited, but is made of a soft plastic such as a vinyl chloride resin or a urethane resin, and the ratio of the thickness on the short diameter side to the thickness on the long diameter side in the flat shape. However, an extruded tube of 30 to 70% is preferred. If it exceeds 70%, as shown in the prior art, the suction capacity is reduced due to the twisting of the catheter, or the suction capacity is reduced due to narrowing of the lumen due to the remarkable increase in the wall thickness on the minor diameter side. . Further, if the ratio is less than 30%, the catheter is likely to be deformed into a concave shape at the time of suturing for fixing the catheter, airtightness in the thoracic cavity cannot be maintained, and there is a concern that leakage may occur from a gap between the chest wall and the catheter. Further, there is a possibility that the distal end portion of the catheter cannot be guided to a desired indwelling position at the time of insertion because the catheter becomes loose. Considering practicality, the dimension is preferably such that the thickness on the long diameter side is 0.5 to 2.0 mm and the thickness on the short diameter side is 0.15 to 1.4 mm.
【００１３】外套カテーテル（３）の形状は短径が長径
の３０〜７０％の扁平断面カテーテルが好ましい。これ
は７０％を超えると真円に近いためカテーテルのキンク
や腰が強いといった従来技術の問題が発生し易く、また
３０％未満ではチューブ肉厚を考えると長径が長くなり
すぎて実用的でない。実用性を考えると寸法は長径２〜
２０ｍｍ、短径０．６〜１４ｍｍが好ましい。The shape of the mantle catheter (3) is preferably a flat-section catheter having a minor axis of 30 to 70% of the major axis. If it exceeds 70%, it is close to a perfect circle, so that problems of the prior art such as kink and strong stiffness of the catheter are likely to occur. If it is less than 30%, considering the wall thickness of the tube, the long diameter becomes too long and is not practical. Considering practicality, the dimensions are 2
20 mm and a short diameter of 0.6 to 14 mm are preferred.
【００１４】外套カテーテル（３）の長さは１００〜５
００ｍｍが好ましい。１００ｍｍ以下では外套カテーテ
ル（３）挿入時、カテーテルを把持する部分を確保する
ことが難しく、５００ｍｍ以上では長過ぎて実用的では
ない。更に２５０〜４００ｍｍがより好ましい。外套カ
テーテル（３）の内面及び外面の少なくとも一方の面の
一部又は全部には金属針や外套カテーテル（３）抜去時
の抵抗を軽減させるため及び外套カテーテル（３）内腔
の詰まりを防止するために潤滑性処理を施すことが好ま
しく、処理に用いる潤滑性材料としては人体に対する毒
性を考慮したハイドロゲルであるコラーゲン、ポリビニ
ルピロリドン、ポリアクリルアミド等が好ましい。The length of the mantle catheter (3) is 100 to 5
00 mm is preferred. If it is less than 100 mm, it is difficult to secure a portion for gripping the catheter when inserting the outer catheter (3), and if it is more than 500 mm, it is too long to be practical. Furthermore, 250 to 400 mm is more preferable. A part or all of at least one of the inner surface and the outer surface of the mantle catheter (3) is used to reduce the resistance when removing the metal needle or the mantle catheter (3) and to prevent clogging of the lumen of the mantle catheter (3). Therefore, it is preferable to perform a lubricating treatment, and as the lubricating material used for the treatment, collagen, polyvinylpyrrolidone, polyacrylamide, etc., which are hydrogels in consideration of toxicity to the human body, are preferable.
【００１５】外套カテーテル（３）の先端は金属針
（１）の先端段差がフックされるように内側に段差が設
けられているが、これは外套カテーテル（３）の一体加
工或いはＸ線不透過性の先端チップ（４）を接続しても
良く、先端部近傍には効率良く排出するための側孔
（５）が一個以上空いており、後端は吸引器等のコネク
ターに接続しやすいようにラッパ状に拡径化しているこ
とが望ましい。The distal end of the mantle catheter (3) is provided with a step inside so that the step of the distal end of the metal needle (1) is hooked. This step is made by integrally processing the mantle catheter (3) or radiopaque. The tip (4) may be connected to the tip, and one or more side holes (5) for efficient discharge are provided near the tip, and the rear end is easily connected to a connector such as a suction device. It is desirable that the diameter be enlarged like a trumpet.
【００１６】また、図２に示すように他の実施例として
外套カテーテル（３）の内部にリブ（６）を設けると金
属針（１）と粘着せずにスムーズに針の出し入れが出来
たり、カテーテル留置後どんなに屈曲させても内腔が閉
塞しない等のメリットがあるが、カテーテル後端にリブ
（６）のないコネクターチューブ（７）を取り付ける必
要がある。更に外套カテーテル（３）にはカテーテル内
腔や胸腔内の処置を行うための薬液注入用のコネクター
（１０）を手元側近位端に有するサブルーメン（８）を
設けるのも好ましい実施例の一つである。As shown in FIG. 2, as another embodiment, if a rib (6) is provided inside a mantle catheter (3), the needle can be smoothly inserted and removed without sticking to the metal needle (1). There is a merit that the lumen is not obstructed no matter how bent after the catheter is placed, but it is necessary to attach a connector tube (7) without a rib (6) to the rear end of the catheter. It is also a preferred embodiment that the mantle catheter (3) is provided with a sublumen (8) having a connector (10) for injecting a drug solution at the proximal end near the hand side for performing treatment inside the catheter cavity or thoracic cavity. It is.
【００１７】次に外套カテーテル（３）が屈曲したり、
ねじれたときの状態を従来のものと比較して説明する
と、断面形状が円形の外套カテーテル（３）は屈曲させ
ると図４（ｃ）のように内腔が完全に閉塞してしまうの
に対して、本発明の場合は図１（ｃ）又は図２（ｃ）の
ように内腔が確実に保たれる。更に図６に外套カテーテ
ル（３）の吸引特性を示した。外套カテーテル（３）を
０度から１５０度まで屈曲させ、各屈曲角度で水やグリ
セリン等の粘長な液体を吸引した時の吸引容量を測定し
た。Next, the sheath catheter (3) bends,
Explaining the twisted state in comparison with the conventional one, when the outer catheter (3) having a circular cross section is bent, the inner lumen is completely closed as shown in FIG. Thus, in the case of the present invention, the lumen is securely maintained as shown in FIG. 1 (c) or FIG. 2 (c). FIG. 6 shows the suction characteristics of the outer catheter (3). The mantle catheter (3) was bent from 0 to 150 degrees, and the suction capacity when suctioning a viscous liquid such as water or glycerin at each bending angle was measured.
【００１８】外套カテーテル（３）の断面が円形のもの
は図６（ａ）のとおり曲げ角度の増加に伴いカテーテル
がキンクし始めると吸引容量が急激に低下するのに対
し、本発明による断面扁平（長径、短径肉厚比３０〜７
０％）外套カテーテル（３）は図６（ｂ）のごとく外套
カテーテル（３）内腔の両端のルートが閉塞し難く、流
量の低下が緩やかになる。また、カテーテルにねじれが
生じると、断面形状が扁平で均等な肉厚を有する従来の
トロカールカテーテルは図６（ｃ）のとおり吸引容量が
低下するのに対し、本発明の外套カテーテル（３）は図
６（ｂ）のままで著しい低下を示さない。本発明の外套
カテーテル（３）の曲げ弾性は断面形状が扁平のため、
断面形状が円形のトロカールカテーテルと比べると半分
程度となっている。As shown in FIG. 6 (a), the sheath catheter (3) having a circular cross section suddenly reduces the suction capacity when the catheter starts to kink as the bending angle increases, whereas the flat cross section according to the present invention. (Long diameter, short diameter thickness ratio 30-7
0%) In the overcoat catheter (3), as shown in FIG. 6 (b), the routes at both ends of the inner lumen of the overcoat catheter (3) are hard to be closed, and the flow rate decreases gradually. When the catheter is twisted, the suction capacity of the conventional trocar catheter having a flat cross-sectional shape and a uniform thickness is reduced as shown in FIG. FIG. 6B shows no significant decrease. The bending elasticity of the mantle catheter (3) of the present invention is flat because its cross-sectional shape is flat.
The cross section is about half that of a circular trocar catheter.
【００１９】次に図３により外套カテーテル（３）が胸
腔内に留置されている状態を説明すると、カテーテル
（２１）が気体排出の留置位置で、カテーテル（２２）
が液体排出の留置位置である。一般的にはカテーテル
（２１）の場合は屈曲が大きく、さらに神経圧迫部（３
１）又は（３２）の部分で患者が痛がることが多いが、
本発明の扁平断面の外套カテーテル（３）は肋骨間に長
径側が肋骨と平行になるように留置を行うため、外套カ
テーテル（３）は短径方向には曲げ弾性が低くなり、神
経を強く圧迫することなく留置することができる。また
患者が治癒後にカテーテルを抜き去った場合、外套カテ
ーテル（３）が扁平なため速やかに傷口が塞がる。Next, the state in which the mantle catheter (3) is indwelled in the thoracic cavity will be described with reference to FIG. 3. When the catheter (21) is in the indwelling position for gas discharge, the catheter (22)
Is the position where the liquid is discharged. In general, in the case of the catheter (21), the bend is large, and the nerve compression part (3
The patient often hurts in part 1) or (32),
Since the flat-sectioned mantle catheter (3) of the present invention is placed between ribs so that the long diameter side is parallel to the ribs, the mantle catheter (3) has low bending elasticity in the short diameter direction and strongly compresses the nerve. Can be detained without doing so. When the patient removes the catheter after healing, the wound is quickly closed because the mantle catheter (3) is flat.
【００２０】[0020]
【発明の効果】以上に述べた如く、本発明によるトロカ
ールカテーテルは屈曲したり或いはねじれるように留置
してもキンクせず、しかも肋間神経を圧迫しないため安
全かつ低侵襲に胸腔内に貯留した液体や気体の排出を行
える用具である。更に皮膚の穿刺孔が扁平なためカテー
テルの抜去後速やかに傷口が塞がるという効果もある。As described above, the trocar catheter according to the present invention does not kink even if it is placed in a bent or twisted state, and does not compress the intercostal nerve. Therefore, the liquid stored in the thoracic cavity in a safe and minimally invasive manner. It is a tool that can discharge gas and gas. Further, since the puncture hole in the skin is flat, there is also an effect that the wound is closed immediately after the removal of the catheter.
【図１】本発明の一実施例であるトロカールカテーテル
の概略図で、（ａ）は正面図、（ｂ）はＡ−Ａ´断面
図、（ｃ）は外套カテーテルのキンク時のＡ−Ａ´断面
図である。FIG. 1 is a schematic view of a trocar catheter according to an embodiment of the present invention, wherein (a) is a front view, (b) is a cross-sectional view taken along the line AA ′, and (c) is an AA at the time of kinking of the mantle catheter. FIG.
【図２】本発明の他の実施例のトロカールカテーテルの
概略図で（ａ）は正面図、（ｂ）はＡ−Ａ´断面図、
（ｃ）は外套カテーテルのキンク時のＡ−Ａ´断面図で
ある。FIGS. 2A and 2B are schematic views of a trocar catheter according to another embodiment of the present invention, wherein FIG. 2A is a front view, FIG.
(C) is AA 'sectional drawing at the time of the kink of a mantle catheter.
【図３】本発明のトロカールカテーテルを胸腔内に留置
した状態を示す概略図である。FIG. 3 is a schematic view showing a state where the trocar catheter of the present invention is placed in the thoracic cavity.
【図４】断面形状が円形の従来のトロカールカテーテル
を示す概略図で（ａ）は正面図、（ｂ）はＡ−Ａ´断面
図、（ｃ）は外套カテーテルのキンク時のＡ−Ａ´断面
図である。4A and 4B are schematic views showing a conventional trocar catheter having a circular cross-sectional shape, wherein FIG. 4A is a front view, FIG. 4B is a cross-sectional view taken along line AA ′, and FIG. It is sectional drawing.
【図５】断面形状が扁平で均等な肉厚比を有する従来の
トロカールカテーテルを示す概略図で（ａ）は正面図、
（ｂ）はＡ−Ａ´断面図、（ｃ）は外套カテーテルのキ
ンク時のＡ−Ａ´断面図である。FIGS. 5A and 5B are schematic views showing a conventional trocar catheter having a flat cross-sectional shape and an even thickness ratio, wherein FIG.
(B) is an AA ′ cross-sectional view, and (c) is an AA ′ cross-sectional view of the outer catheter at the time of kink.
【図６】本発明の一実施例（長径、短径肉厚比３０〜７
０％）と従来のトロカールカテーテルのカテーテル曲げ
角度と流量の関係を示す図である。FIG. 6 shows an embodiment of the present invention (major axis / minor axis thickness ratio of 30 to 7).
0%) and the relationship between the catheter bending angle and the flow rate of the conventional trocar catheter.
１ 金属針 ２ グリップ球 ３ 外套カテーテル ４ 先端チップ ５ 側孔 ６ リブ ７ コネクターチューブ ８ サブルーメン ９ 分岐チューブ 10 コネクター 11 胸壁 12 胸腔 13 肋骨 14 肺 21、22 カテーテル 31、32 神経圧迫部 DESCRIPTION OF SYMBOLS 1 Metal needle 2 Grip ball 3 Mantle catheter 4 Tip 4 Side hole 6 Rib 7 Connector tube 8 Sublumen 9 Branch tube 10 Connector 11 Chest wall 12 Chest cavity 13 Rib 14 Lung 21, 22 Catheter 31, 32 Nerve compression part
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ａ６１Ｍ 27/00 Ａ６１Ｍ 27/00 Ｆターム(参考） 4C060 FF27 4C077 AA18 BB10 DD21 KK01 KK21 NN20 PP08 PP14 4C167 AA03 AA22 AA36 BB02 BB03 BB25 CC21 GG05 GG10 GG21 HH08 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI theme coat ゛ (reference) A61M 27/00 A61M 27/00 F term (reference) 4C060 FF27 4C077 AA18 BB10 DD21 KK01 KK21 NN20 PP08 PP14 4C167 AA03 AA22 AA36 BB02 BB03 BB25 CC21 GG05 GG10 GG21 HH08
Claims (5)
トロカールカテーテルにおいて、外套カテーテル断面が
扁平形状であって、扁平形状における長径側の肉厚に対
する短径側の肉厚の比率が３０〜７０％の範囲であるこ
とを特徴とするトロカールカテーテル。1. A trocar catheter comprising a combination of a metal needle and a mantle catheter, wherein the cross section of the mantle catheter has a flat shape, and the ratio of the thickness on the short diameter side to the thickness on the long diameter side in the flat shape is 30 to 70%. A trocar catheter characterized by being in the range.
長径に対する短径の比率が３０〜７０％の範囲である請
求項１記載のトロカールカテーテル。2. The trocar catheter according to claim 1, wherein the ratio of the minor axis to the major axis in the flat cross-sectional shape of the outer catheter is in the range of 30 to 70%.
ブルーメンが少なくとも１つ設けてある請求項１又は２
記載のトロカールカテーテル。3. The mantle catheter according to claim 1, wherein at least one longitudinally extending sublumen is provided.
The trocar catheter as described.
たリブが少なくとも１つ設けてある請求項１〜３記載の
いずれかのトロカールカテーテル。4. The trocar catheter according to claim 1, wherein at least one longitudinally extending rib is provided in a lumen of the outer catheter.
少なくとも一方の面の一部又は全部に潤滑性処理が施さ
れている請求項１〜４記載のいずれかのトロカールカテ
ーテル。5. The trocar catheter according to claim 1, wherein at least one of the inner surface and the outer surface of the trocar catheter is partially or entirely lubricated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001073142A JP2002272755A (en) | 2001-03-14 | 2001-03-14 | Trocar catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001073142A JP2002272755A (en) | 2001-03-14 | 2001-03-14 | Trocar catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002272755A true JP2002272755A (en) | 2002-09-24 |
Family
ID=18930613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001073142A Pending JP2002272755A (en) | 2001-03-14 | 2001-03-14 | Trocar catheter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002272755A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101543423B (en) * | 2009-05-12 | 2010-12-08 | 德阳市人民医院 | Operation supporting sleeve and puncture guiding needle capable of being used by combination |
| CN103263703A (en) * | 2013-05-03 | 2013-08-28 | 江苏亚华生物科技工程有限公司 | Tension pneumothorax puncture component |
| CN106039438A (en) * | 2016-07-06 | 2016-10-26 | 佛山市第人民医院 | Thoracic closed drainage instrument |
-
2001
- 2001-03-14 JP JP2001073142A patent/JP2002272755A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101543423B (en) * | 2009-05-12 | 2010-12-08 | 德阳市人民医院 | Operation supporting sleeve and puncture guiding needle capable of being used by combination |
| CN103263703A (en) * | 2013-05-03 | 2013-08-28 | 江苏亚华生物科技工程有限公司 | Tension pneumothorax puncture component |
| CN106039438A (en) * | 2016-07-06 | 2016-10-26 | 佛山市第人民医院 | Thoracic closed drainage instrument |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5191005B2 (en) | Method and device for tracheostomy | |
| US20050033264A1 (en) | Catheter device | |
| US20070049904A1 (en) | Drain with occlusion removing structure | |
| US7229433B2 (en) | Apparatus for treating pneumothorax and/or hemothorax | |
| JPS63143074A (en) | Improved body liquid drain apparatus | |
| AU2002305100B2 (en) | Medical instrument with an atraumatic end | |
| US12004770B2 (en) | Catheter design for use in treating pleural diseases | |
| US5983898A (en) | Airway splint obturator | |
| JPH10151202A (en) | Trocar catheter | |
| JP2002272755A (en) | Trocar catheter | |
| WO2023286638A1 (en) | Catheter and method for operating catheter | |
| JP2003180821A (en) | Urethral catheter | |
| CN219614678U (en) | Disposable flat drainage tube | |
| US20030040768A1 (en) | Stoma dilator | |
| JP3247077B2 (en) | Medical drain tube | |
| JP2001046505A (en) | Catheter | |
| Lund et al. | Blom-Singer puncture: Practicalities in everyday management | |
| CN113613703B (en) | Catheter device comprising a connector | |
| JP3209896B2 (en) | Drainage tube for endoscopic surgery | |
| JPH0530443Y2 (en) | ||
| JPH0748269Y2 (en) | Gastrointestinal catheter | |
| RU2574130C2 (en) | Improved construction of catheter for application in treatment of pleural diseases | |
| EP0861106B1 (en) | Device for draining the pleural cavity | |
| JP3002163U (en) | Tube for indwelling vascular catheter | |
| JP2002065608A (en) | Method for manufacturing l-type baloon cathether, its inner cavity and l-type |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20040405 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20060222 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20060314 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20060428 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20061102 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20061225 |
|
| A911 | Transfer of reconsideration by examiner before appeal (zenchi) |
Free format text: JAPANESE INTERMEDIATE CODE: A911 Effective date: 20070105 |
|
| A912 | Removal of reconsideration by examiner before appeal (zenchi) |
Free format text: JAPANESE INTERMEDIATE CODE: A912 Effective date: 20070209 |