JP2018175437A - Catheter for continuous nerve block - Google Patents

Catheter for continuous nerve block Download PDF

Info

Publication number
JP2018175437A
JP2018175437A JP2017079783A JP2017079783A JP2018175437A JP 2018175437 A JP2018175437 A JP 2018175437A JP 2017079783 A JP2017079783 A JP 2017079783A JP 2017079783 A JP2017079783 A JP 2017079783A JP 2018175437 A JP2018175437 A JP 2018175437A
Authority
JP
Japan
Prior art keywords
catheter
tip
side holes
continuous
nerve block
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.)
Granted
Application number
JP2017079783A
Other languages
Japanese (ja)
Other versions
JP6915851B2 (en
Inventor
俊雄 野原
Toshio Nohara
俊雄 野原
勇人 清水
Isato Shimizu
勇人 清水
孝基 中澤
Takaki Nakazawa
孝基 中澤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hakko Co Ltd
Original Assignee
Hakko Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hakko Co Ltd filed Critical Hakko Co Ltd
Priority to JP2017079783A priority Critical patent/JP6915851B2/en
Publication of JP2018175437A publication Critical patent/JP2018175437A/en
Application granted granted Critical
Publication of JP6915851B2 publication Critical patent/JP6915851B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Media Introduction/Drainage Providing Device (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a user-friendly catheter for continuous nerve block, capable of reliably injecting a drug solution in a desired injection position by preventing a distal end of a catheter placed near a dominant nerve from being largely deviated from an initial position during the placement, and performing effective pain management by smoothly inserting and removing the catheter.SOLUTION: A catheter 10 including a reformed curved part 20 and a plurality of side holes 30, formed at a distal end, the curved part of the catheter forms a single circle, and the side holes are formed by being disposed at a straight part just proximal to the curved part. As a preferable configuration, the side holes are disposed alternately on the catheter side face at positions forming 180° to each other, with their heights deviated from each other. The tip end of the curved part (the distal end of the catheter when it is curved) 11 is set up at a substantially same position as a start point 13 of the curvature.SELECTED DRAWING: Figure 2

Description

本発明は、体内に留置して薬液を注入するカテーテルであって、手術の後などに疼痛管理のため支配神経近傍に局所麻酔薬を持続的に投与するための持続神経ブロック用カテーテルに関する。   The present invention relates to a catheter for indwelling in the body for injecting a drug solution, and for a catheter for continuous nerve block for continuously administering a local anesthetic in the vicinity of a control nerve for pain management after surgery.

肩関節鏡視下手術の後の疼痛除去には、持続斜角筋間ブロックが有効とされている。そして、この手技に使用可能な器具として、先端付近に薬液注入口を備えたカテーテルと、該カテーテルの先端部分を支配神経近傍に誘導するための通路となるガイド針と、留置後カテーテルの末端部に接続して局所麻酔薬を供給する薬液供給部から構成され、超音波ガイド下にガイド針の内腔を通してカテーテルの先端を支配神経近傍まで誘導し、そこにカテーテルを留置して必要な期間(平均1週間程度)麻酔薬を持続注入する器具が用いられている。そのさい、長期間の留置となるため体動等によるカテーテルの自然抜去を防止するため、体表のカテーテル刺入部分で医療用接着剤を用いたり、皮下トンネルを形成したりしてカテーテルの動きを規制することがなされている。   For inter-shoulder pain removal after shoulder arthroscopic surgery, continuous interpancreatic block has been validated. Then, as an instrument usable for this procedure, a catheter provided with a drug solution inlet near the tip, a guide needle serving as a passage for guiding the tip of the catheter to the vicinity of the control nerve, and the distal end of the catheter after indwelling It consists of a chemical solution supply unit connected to the local anesthetic agent supply, guides the tip of the catheter to the vicinity of the controlling nerve through the lumen of the guide needle under the ultrasound guide, and indwells the catheter there and the necessary period ( A device for continuous infusion of an anesthetic is used for about one week on average. At that time, the movement of the catheter by using a medical adhesive at the catheter insertion part of the body surface or forming a subcutaneous tunnel, etc., in order to prevent the natural removal of the catheter by body movement and the like for long-term indwelling. It has been made to regulate.

しかし、前記のように自然抜去予防のため刺入部でカテーテルを固定しても、解剖学的な支配神経と刺入部の距離は頚部や肩関節の運動に伴い変動することになり、カテーテルの先端が当初留置した位置から移動してしまい、結果として除痛効果が低下してしまう症例が多くあるばかりか、むしろ、カテーテルの刺入部での固定が迷入あるいは抜けなどの原因となることも考えられる。   However, even if the catheter is fixed at the insertion site to prevent natural removal as described above, the distance between the anatomic control nerve and the insertion site varies with the movement of the neck and shoulder joints. There are many cases in which the tip of the catheter moves from the position where it was initially indwelled, and as a result, the pain relief effect is reduced, but rather, fixation at the insertion site of the catheter causes a cause such as straying or omission. Is also conceivable.

一方、体内留置したカテーテルにより局所麻酔薬を持続注入するためのカテーテルとして、先端部をカール成形しピッグテール状あるいは逆J状の屈曲部として型付けしたものであって、該カテーテルの屈曲部を真っ直ぐな状態にしてガイド部材及びガイド針を通して目的部まで導入すると、型付けされた先端がガイド針から露出を開始すると同時にカールすることにより脊椎壁へ突き当たるおそれをなくし、麻酔薬の偏り注入を解消するとした持続局所麻酔セットのためのカテーテルが提案されている。(特許文献1)   On the other hand, as a catheter for continuous infusion of a local anesthetic with a catheter indwelling in the body, the tip is curled and shaped as a pigtail or reverse J-shaped bend, and the bend of the catheter is straight When introduced to the target part through the guide member and the guide needle in the state, the molded tip starts to be exposed from the guide needle and simultaneously curls, thereby eliminating the possibility of hitting the spine wall and eliminating the biased injection of the anesthetic. A catheter for a local anesthesia set has been proposed. (Patent Document 1)

実公平6−30205号公報Japanese Utility Model Publication No. 6-30205

前記引用文献1のような屈曲部をもつカテーテルを用いると、本来の脊椎壁への突き当たりを防止する効果の他に、留置中の位置ずれや自然抜去を防止できる可能性が考えられるが、カール形成する屈曲部の状況によっては、十分な位置ずれ防止効果が得られないことや、あるいは、カテーテルを抜去するさいに、ピッグテール部分が結ばれたりからがったりすることで引っ掛かってしまうことが懸念される。また、薬液注入のための注入孔の位置によっては、留置されたカテーテルの位置が良好な位置であっても、薬液が注入される位置が最適位置となっているとは限らず、また、周辺組織との接触により注入孔が詰まってしまう可能性もある。   The use of a catheter having a bending portion as in the cited reference 1 may possibly prevent positional deviation during indwelling and natural removal in addition to the effect of preventing butting against the original spinal wall. Depending on the condition of the bending part to be formed, there is a concern that a sufficient positional shift prevention effect can not be obtained, or the pigtail portion may be caught by being tied or coming off when removing the catheter. Be done. Further, depending on the position of the injection hole for drug solution injection, even if the indwelling catheter is at a good position, the position at which the drug solution is injected is not always the optimum position, and the periphery There is also the possibility that the injection hole may be clogged by contact with tissue.

そこで、本発明は、支配神経近傍に留置されたカテーテルの先端が留置中に当初の位置から大きくずれることがなく、薬液が所望の注入位置に確実に注入できること、また、カテーテルの挿入や抜去がスムーズにできることで、効果的な疼痛管理ができると共に使い勝手に優れた持続神経ブロック用カテーテルを提供することを課題とした。   Therefore, according to the present invention, the distal end of the catheter indwelling in the vicinity of the control nerve does not largely deviate from the initial position during indwelling, and the drug solution can be reliably injected into the desired injection position. It was an object of the present invention to provide a continuous nerve block catheter which is capable of pain management effectively and which is easy to use.

本発明の持続神経ブロック用カテーテルは、支配神経近傍に留置される、先端に癖付けされた屈曲部と複数のサイドホールが形成されるカテーテルであって、該カテーテルの屈曲部は一重の円形に形成し、サイドホールは屈曲部の直近のストレート部に位置させて形成した。   The catheter for continuous nerve block of the present invention is a catheter placed near the control nerve and having a tip-bent bent portion and a plurality of side holes, wherein the bent portion of the catheter has a single round shape. The side holes were formed at the straight portion closest to the bending portion.

また、好ましくは、前記サイドホールは、カテーテル側面の互いに180度となる位置に高さをずらして交互に配置し、屈曲部の先端(屈曲したときのカテーテルの先端)は、該屈曲部の曲がりの始点とほぼ同じ位置に設定される。   Further, preferably, the side holes are alternately arranged at positions shifted by 180 degrees with respect to each other on the side surface of the catheter, and the tip of the bent portion (the tip of the catheter when bent) is a bend of the bent portion It is set to almost the same position as the start point of.

(作用)
本手段の持続神経ブロック用カテーテルによると、カテーテルの屈曲が一重の円形に形成されることにより、カテーテルを抜くさいに、該カテーテルを引っ張ってもカテーテル先端が結ばれたり、からがったりして引っ掛かることがない。また、薬液吐出部となるサイドホールが屈曲部直近のストレート部に配置され、制動部となる屈曲部と分かれており、また、両者の位置関係が明確なことにより、留置のさい、あるいは、留置位置確認のさい薬液が吐出する位置の確認がしやすく、例えば、屈曲部に吐出部がある場合で考えられるように、薬物の吐出位置が体内での屈曲部の広がりの方向に関係してしまうことがない。更に、薬液注入口が制動部直近の位置に複数設けられることで、屈曲部の位置を把握しておくことにより吐出部の解剖学的な留置位置(薬液の吐出位置)が意図した範囲から離れてしまうことがない。
(Action)
According to the catheter for continuous nerve block of this means, the catheter is bent in a single round shape, so that when the catheter is pulled out, the catheter tip may be tied or loosened even if the catheter is pulled. There is no risk of getting caught. In addition, the side hole which becomes the medical fluid discharge part is arranged in the straight part which is close to the bending part, and it is separated from the bending part which becomes the braking part, and the positional relationship of both is clear. When checking the position, it is easy to check the position where the drug solution is discharged. For example, the drug discharge position is related to the direction of the spread of the bend in the body, as can be considered when there is a discharge in the bend. I have not. Furthermore, by providing a plurality of drug solution inlets at a position close to the braking portion, the anatomical indwelling position (dispensing position of the drug solution) of the discharge portion deviates from the intended range by grasping the position of the bending portion. There is no need to worry.

また、サイドホールをカテーテルの両側に交互に設けることで、万一、一方側が詰まるような事態となっても他方側から吐出できる。   Also, by alternately providing the side holes on both sides of the catheter, even if one side is clogged, it can be discharged from the other side.

本手段及び作用によると、支配神経近傍に留置されたカテーテルの先端が留置中に大きくずれることが無いため、薬液を常に支配神経近傍に吐出することができ疼痛を持続して効果的にコントロールすることができる。また、抜去のさいにスムーズとなることで、薬液注入を確実にすると共に、使用勝手に優れた持続神経ブロックカテーテルを提供することができる。   According to the means and the action, since the tip of the catheter indwelling near the control nerve does not largely shift during the indwelling, the drug solution can always be discharged in the vicinity of the control nerve, and the pain is sustained and controlled effectively. be able to. In addition, since it becomes smooth at the time of removal, it is possible to provide a continuous nerve block catheter excellent in usability as well as ensuring drug solution injection.

本発明の実施の形態の持続末梢神経ブロック用カテーテルを示す全体構成図。BRIEF DESCRIPTION OF THE DRAWINGS The whole block diagram which shows the catheter for continuous peripheral nerve blocks of embodiment of this invention. 前記形態のカテーテルの先端部示す拡大構成図。The expanded block diagram which shows the front-end | tip part of the catheter of the said form. 前記形態のカテーテルを所定位置に留置するための誘導通路を形成するガイド針及びガイド部材を示す構成図。The block diagram which shows the guide needle and guide member which form the guide channel for detaining the catheter of the said form in a predetermined position. 前記形態のカテーテルを含む持続末梢神経ブロックのためのセット器具の一例を示す構成図。The block diagram which shows an example of the set instrument for continuous peripheral nerve block containing the catheter of the said form.

以下、本発明の持続神経ブロックカテーテルの実施の形態につき図面を参考に詳細に説明する。
本形態の持続神経ブロック用カテーテルは、特に、次のような特徴をもつ持続斜角筋間ブロック等に好適に用いられる。該持続斜角筋間ブロックは頚部にカテーテルを留置するため首の動きによりカテーテルが抜けてしまうことが多く、加えて組織や筋肉も比較的柔らかくカテーテルが更に動きやすいという特徴がある。調査によれば、前述したような通常の持続神経ブロックカテーテルでは、留置1日後で平均7〜8mm、2日後で更に3〜4mm抜けてしまうことが報告されている。本発明は、このように留置期間(平均1週間程度)、当初の留置位置を保持しておくことが困難である部位の持続神経ブロックに適合することができるカテーテルとして提供されるものである。
Hereinafter, an embodiment of a continuous nerve block catheter of the present invention will be described in detail with reference to the drawings.
The continuous nerve block catheter of this embodiment is particularly suitably used for a continuous intersteple intermuscular block having the following features. The continuous interpancreatic intermuscle block is characterized in that the catheter is often removed by the movement of the neck because the catheter is placed in the neck, and in addition, the tissue and muscles are relatively soft and the catheter is more movable. According to research, it has been reported that, in the case of a normal continuous nerve block catheter as described above, an average of 7 to 8 mm after 1 day of placement and a further 3 to 4 mm after 2 days of indwelling. The present invention is thus provided as a catheter that can be adapted to a continuous nerve block at a site where it is difficult to maintain the initial indwelling position (during an average of about one week).

図1は、本実施の形態のカテーテルの全体構成図を示し、図2は、特徴部分となるカテーテル先端部を示している。
カテーテル10は、耐熱性を備えたポリオレフィン、フッ素系ポリマー、熱可塑性エラストマーなどの樹脂からなり、本例においては、前記神経ブロック用カテーテルとして通常用いられる、外径0.45mm、内径0.26mm、長さ950mmのチューブが用いられた。先端部11は球状に閉塞され、端部を外径6mmの円形の屈曲部20として形成し、該屈曲部20の直近のストレート部には5mm間隔でサイドホール30を4箇所備えて形成した。また本例においては、屈曲部20を伸ばしたさいに先端から158mm及び174mmの位置に目盛り14を施し、後記するガイド針40及びガイド部材50を通して体内にカテーテル10の先端11を導入するさい、ガイド針先端42からのカテーテル先端11の突出の長さの指標とした。
FIG. 1 shows the entire configuration of the catheter of the present embodiment, and FIG. 2 shows the catheter tip which is a characteristic part.
The catheter 10 is made of a heat-resistant resin such as polyolefin, a fluorine-based polymer, or a thermoplastic elastomer, and in this example, the outer diameter 0.45 mm and the inner diameter 0.26 mm, which are generally used as the catheter for nerve block. A 950 mm long tube was used. The tip end portion 11 is spherically closed, and the end portion is formed as a circular bent portion 20 having an outer diameter of 6 mm, and the straight portion closest to the bent portion 20 is formed with four side holes 30 at 5 mm intervals. Further, in this example, when extending the bending portion 20, the scale 14 is provided at positions of 158 mm and 174 mm from the tip, and the tip 11 of the catheter 10 is introduced into the body through the guide needle 40 and the guide member 50 described later. It is an index of the length of protrusion of the catheter tip 11 from the needle tip 42.

屈曲部20は、カテーテル10の先端部を加熱処理することで一重の円形に癖付けしたもので、屈曲部の始点13の位置と屈曲部の先端(カテーテルの先端)11がほぼ同じ位置となる、丁度一重の円となるように型付けされる。ここで、屈曲部20がJ形状などの不十分な屈曲とすると、本発明が適用となるカテーテル10が動きやすい持続斜角筋ブロックのカテーテルとして用いる場合位置ずれが発生する懸念があり、一方、一重を超えてピッグテール形状のようなカテーテル先端11が屈曲部20から突出した形状や、一重以上に巻いたものとすると、カテーテル10を引き抜くさいに組織と干渉するなどにより、からがって引っ掛かりとなったり、最悪の場合、屈曲部に結び目を形成してしまったりするなどの不都合が生じる懸念がある。   The bending portion 20 is brazed into a single circle by heating the tip portion of the catheter 10, and the position of the start point 13 of the bending portion and the tip of the bending portion (the tip of the catheter) 11 become almost the same position , It is typed to be just a single circle. Here, if the bending portion 20 has insufficient bending such as a J shape, there is a concern that positional deviation may occur when the catheter 10 to which the present invention is applied is used as a catheter of a continuous oblique musculoskeletal block that is easy to move, If the catheter tip 11 has a shape like a pigtail that protrudes beyond a single layer, or if it is wound in one or more layers, the catheter 10 may be pulled off due to interference with tissue or the like. In the worst case, there is a concern that disadvantages such as formation of a knot at the bending portion may occur.

また、屈曲部20は簡単に伸ばすことが可能で、体内への挿入のさいは真っ直ぐに伸ばした状態をとり、ガイド針40より突出すると即座に癖付けされた元の円形に戻る形状記憶性を備えている。   In addition, the bending portion 20 can be easily extended, and when inserted into the body, it takes a straightened state, and when it protrudes from the guide needle 40, it returns to its original circular shape that is immediately brazed. Have.

カテーテル10のストレート部に明けられるサイドホール30は、屈曲部の始点13となる位置から近位側に3mmの位置にひとつ目のサイドホール30aが設けられ、該ひとつ目30aの位置から5mm間隔で、互いにカテーテル側面の180度の位置に交互に4箇所(30a、30b、30c、30d)備えて形成した。即ち、サイドホール30は、図面の正面側に2箇所(30a、30c)、裏面側に2箇所(30b、30d)が配置される。   The side holes 30 formed in the straight portion of the catheter 10 are provided with a first side hole 30 a at a position 3 mm on the proximal side from the position of the starting point 13 of the bending portion, and at a distance of 5 mm from the position of the first eye 30 a The four points 30a, 30b, 30c and 30d were alternately formed at 180 degrees on the side of the catheter. That is, the side holes 30 are disposed at two places (30a, 30c) on the front side of the drawing and two places (30b, 30d) on the back side.

サイドホール30をストレート部分に、かつ、屈曲部20の直近に設けることにより、体内に挿入したさい屈曲部20との位置関係から超音波画像などにより麻酔薬の吐出位置が明確にわかる。ここで、サイドホール30が屈曲部20にあると、体内へ挿入するさいどの方向に屈曲部20が開くかわからないため位置設定が面倒になり、また、留置中に動いてしまう可能性も高くなる。一方、ストレート部にあると屈曲部20がどの方向に開いても位置が同じになる。また、サイドホール30が屈曲部20から遠いと麻酔薬の吐出位置を把握し難い。   By providing the side hole 30 in the straight portion and in the immediate vicinity of the bending portion 20, the discharge position of the anesthetic can be clearly understood from the positional relationship with the bending portion 20 when inserted into the body by an ultrasonic image or the like. Here, if the side hole 30 is in the bending portion 20, the position setting becomes complicated because the bending portion 20 does not know in which direction when inserted into the body, and the possibility of movement during indwelling is also high. . On the other hand, when the bending portion 20 is in the straight portion, the position is the same no matter in which direction the bending portion 20 is opened. In addition, when the side hole 30 is far from the bending portion 20, it is difficult to grasp the discharge position of the anesthetic.

図3は、本形態のカテーテルを支配神経近傍まで導入するため誘導通路となるガイド針、及び、ガイド部材を示し、Aがガイド針、Bがガイド部材、Cがガイド針とガイド部材を接続した状態を示している。
ガイド針40は、先端42がヒューバーポイントと呼称される曲がった刃先形状を持つ針管41とその針基43からなる硬膜外麻酔針として汎用される穿刺針で、内径をカテーテル10が通過できるものとし、また、スタイレット44を備えた2重針として形成される。ガイド部材50は、屈曲したカテーテル10をスムーズにガイド針40に挿入するための器具で、内腔がカテーテル10の通路となるカテーテルガイド管51とガイド針の針基43との接続部となるロック部52からなる特許文献1に用いられるガイド部材と同様なもので良い。
FIG. 3 shows a guide needle serving as a guiding passage for introducing the catheter of this embodiment to the vicinity of the control nerve, and a guide member, where A is a guide needle, B is a guide member, and C is a guide needle and a guide member. It shows the state.
The guide needle 40 is a puncture needle generally used as an epidural anesthesia needle consisting of a needle tube 41 having a curved tip shape whose tip 42 is called a huber point and its needle base 43, and whose inside diameter can pass through the catheter 10 It is also formed as a double needle with a stylet 44. The guide member 50 is a device for smoothly inserting the bent catheter 10 into the guide needle 40, and a lock where a lumen becomes a connection part between the catheter guide tube 51 which becomes the passage of the catheter 10 and the needle base 43 of the guide needle It may be the same as the guide member used in Patent Document 1 including the portion 52.

支配神経近傍へのカテーテル10の導入は次の通りに行われる。
1.超音波ガイド下にガイド針40を支配神経近傍まで穿刺し、スタイレット44を抜去する。
2.カテーテルの末端12側をガイド部材50のカテーテルガイドの先端53側から挿入し、カテーテル10の屈曲部20が真っ直ぐに伸ばされた状態でカテーテルガイド50の内腔に収まるようにセットする。
3.ガイド針40の針基43にガイド部材50のロック部52を接続し、ガイド部材50からガイド針40内腔へとカテーテル10を進める。
4.挿入を進め、カテーテル10がガイド針40の先端42からの突出すると屈曲部20が元の形状の円形へと戻る。
ここで、前記したカテーテル10に設けられた目盛り14は、針管41の先端42からカテーテルの先端11が突出する位置14aと、屈曲部20が全部突出し円形を形成する位置14bを示している。
The introduction of the catheter 10 near the control nerve is performed as follows.
1. Under the ultrasound guide, the guide needle 40 is punctured to the vicinity of the innervating nerve, and the stylet 44 is removed.
2. The distal end 12 side of the catheter is inserted from the distal end 53 side of the catheter guide of the guide member 50, and the catheter 10 is set so as to be accommodated in the lumen of the catheter guide 50 with the bent portion 20 of the catheter 10 straightened.
3. The lock portion 52 of the guide member 50 is connected to the needle hub 43 of the guide needle 40, and the catheter 10 is advanced from the guide member 50 into the guide needle 40 lumen.
4. As the insertion proceeds and the catheter 10 projects from the tip 42 of the guide needle 40, the bending portion 20 returns to the original shape of a circle.
Here, the scale 14 provided on the above-described catheter 10 indicates a position 14a where the tip 11 of the catheter protrudes from the tip 42 of the needle tube 41 and a position 14b where all the bent portions 20 protrude to form a circular shape.

図4は、本形態のカテーテルを含む持続末梢神経ブロックのためのセット器具の一例を示している。本例では、既に説明したカテーテル10、ガイド針40、ガイド部材50の他に、カテーテル10の末端部12を局所麻酔薬液の供給装置(図示せず)に接続するためのカテーテルコネクタ60及びフィルター70を備えたセット器具としている。   FIG. 4 shows an example of a set device for continuous peripheral nerve block including the catheter of the present embodiment. In this example, in addition to the catheter 10, the guide needle 40, and the guide member 50 already described, a catheter connector 60 and a filter 70 for connecting the distal end 12 of the catheter 10 to a local anesthetic liquid supply device (not shown). And a set of equipment.

カテーテル10が支配神経近傍に留置できたら、カテーテル10をその位置に残しガイド針40及びガイド部材50を抜去し、カテーテル10の後端部12にカテーテルコネクタ60及びフィルター70を接続し、更に、麻酔薬液供給装置を取り付けて持続麻酔が行われる。尚、カテーテル10の位置は超音波画像により必要なときに確認することができる。   When the catheter 10 can be placed in the vicinity of the control nerve, the catheter 10 is left at that position, the guide needle 40 and the guide member 50 are removed, the catheter connector 60 and the filter 70 are connected to the rear end 12 of the catheter 10, and anesthesia is further performed. Continuous anesthesia is performed by attaching a drug solution feeder. In addition, the position of the catheter 10 can be confirmed by the ultrasonic image as needed.

10. カテーテル
11. カテーテル先端
12. カテーテル末端
13. 屈曲部始点
14. 目盛り
20. 屈曲部(制動部)
30. サイドホール
40. ガイド針
41. 針管
42. 針管先端
43. ガイド針基
44. スタイレット
50. ガイド部材
51. カテーテルガイド
52. ロック部
53. ガイド先端
60. カテーテルコネクタ
70. フィルター
10. Catheter 11. Catheter tip 12. Catheter end 13. Inflection point 14. Tick marks 20. Bending part (braking part)
30. Side hole 40. Guide needle 41. Needle 42. Needle tube tip 43. Guide needle base 44. Stylet 50. Guide member 51. Catheter guide 52. Locking part 53. Guide tip 60. Catheter connector 70. filter

Claims (3)

支配神経近傍に留置される、先端に癖付けされた屈曲部と複数のサイドホールが形成されるカテーテルであって、該カテーテルの屈曲部は一重の円形に形成され、サイドホールは、屈曲部の直近のストレート部に位置させることを特徴とする持続神経ブロック用カテーテル。   A catheter indwelling in the vicinity of a control nerve and having a tip-bent bent portion and a plurality of side holes, wherein the bent portion of the catheter is formed into a single round shape, and the side holes are A catheter for a continuous nerve block, characterized in that it is located at the nearest straight part. 前記サイドホールは、カテーテル側面の互いに180度の位置に高さを変えて交互に配置する請求項1の持続神経ブロック用カテーテル。   The catheter for continuous nerve block according to claim 1, wherein the side holes are alternately arranged at positions different from each other by 180 degrees on the side surface of the catheter. 前記屈曲部の先端となるカテーテル先端は、屈曲部の始点とほぼ同じ位置に設定される請求項1乃至2の持続神経ブロック用カテーテル。   3. The catheter for continuous nerve block according to claim 1, wherein the catheter tip which is the tip of the bending portion is set at substantially the same position as the starting point of the bending portion.
JP2017079783A 2017-04-13 2017-04-13 Catheter for continuous nerve block Active JP6915851B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2017079783A JP6915851B2 (en) 2017-04-13 2017-04-13 Catheter for continuous nerve block

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2017079783A JP6915851B2 (en) 2017-04-13 2017-04-13 Catheter for continuous nerve block

Publications (2)

Publication Number Publication Date
JP2018175437A true JP2018175437A (en) 2018-11-15
JP6915851B2 JP6915851B2 (en) 2021-08-04

Family

ID=64280361

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2017079783A Active JP6915851B2 (en) 2017-04-13 2017-04-13 Catheter for continuous nerve block

Country Status (1)

Country Link
JP (1) JP6915851B2 (en)

Also Published As

Publication number Publication date
JP6915851B2 (en) 2021-08-04

Similar Documents

Publication Publication Date Title
JP5662159B2 (en) Flow elements for use with flexible spinal needles, needle assemblies, and methods for making and using the same
US8298208B2 (en) Flow elements for use with flexible spinal needles, needle assemblies and methods therefor
JP4289919B2 (en) Chemical injection device
JP6134008B2 (en) Fixed nerve block catheter
JP7065904B2 (en) Self-fixing catheter and how to use it
US10898679B2 (en) Over-the-needle catheter insert
JPH04505112A (en) Dural catheter made of two materials with different hardness
EP3150243B1 (en) Apparatus for accurately controlling needle extension
US20110313392A1 (en) Steerable epidural catheter
US10953159B2 (en) Endoscopic cannula
JP2018175437A (en) Catheter for continuous nerve block
WO2021026641A1 (en) Coiled over-the-needle catheter and methods of use thereof for performing continuous nerve block procedures
US20170000974A1 (en) Echogenic Indwelling Catheter
US20210299358A1 (en) Endoscopic cannula
US20210060305A1 (en) Fenestration Over the Needle Catheter
JP2005102860A (en) Catheter assembly
JPH10146391A (en) Apparatus for inserting catheter tube
JP2004357727A (en) Catheter assembly

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20200407

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20210129

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20210203

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20210405

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20210702

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20210708

R150 Certificate of patent or registration of utility model

Ref document number: 6915851

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150