JP2015231396A - Medical appliance - Google Patents

Medical appliance Download PDF

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Publication number
JP2015231396A
JP2015231396A JP2012215396A JP2012215396A JP2015231396A JP 2015231396 A JP2015231396 A JP 2015231396A JP 2012215396 A JP2012215396 A JP 2012215396A JP 2012215396 A JP2012215396 A JP 2012215396A JP 2015231396 A JP2015231396 A JP 2015231396A
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Japan
Prior art keywords
fluid
lumen
medical device
long
discharge
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JP2012215396A
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Japanese (ja)
Inventor
亮輔 山崎
Ryosuke Yamazaki
亮輔 山崎
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Terumo Corp
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Terumo Corp
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Priority to JP2012215396A priority Critical patent/JP2015231396A/en
Priority to PCT/JP2013/074569 priority patent/WO2014050570A1/en
Publication of JP2015231396A publication Critical patent/JP2015231396A/en
Pending legal-status Critical Current

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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
    • A61M25/00—Catheters; Hollow probes
    • A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
    • A61M25/0023—Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter
    • A61M25/0026—Multi-lumen catheters with stationary elements
    • A61M25/003—Multi-lumen catheters with stationary elements characterized by features relating to least one lumen located at the distal part of the catheter, e.g. filters, plugs or valves
    • 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
    • A61M25/00—Catheters; Hollow probes
    • A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
    • A61M25/0023—Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter
    • A61M25/0026—Multi-lumen catheters with stationary elements
    • A61M2025/0034—Multi-lumen catheters with stationary elements characterized by elements which are assembled, connected or fused, e.g. splittable tubes, outer sheaths creating lumina or separate cores
    • 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
    • A61M25/00—Catheters; Hollow probes
    • A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
    • A61M25/0023—Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter
    • A61M25/0026—Multi-lumen catheters with stationary elements
    • A61M2025/0037—Multi-lumen catheters with stationary elements characterized by lumina being arranged side-by-side
    • 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
    • A61M25/00—Catheters; Hollow probes
    • A61M25/0043—Catheters; Hollow probes characterised by structural features
    • A61M2025/0059—Catheters; Hollow probes characterised by structural features having means for preventing the catheter, sheath or lumens from collapsing due to outer forces, e.g. compressing forces, or caused by twisting or kinking
    • 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
    • A61M25/00—Catheters; Hollow probes
    • A61M25/0067—Catheters; Hollow probes characterised by the distal end, e.g. tips
    • A61M25/0068—Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure
    • A61M2025/0073—Tip designed for influencing the flow or the flow velocity of the fluid, e.g. inserts for twisted or vortex flow
    • 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
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M2025/0183—Rapid exchange or monorail catheters
    • 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
    • A61M25/00—Catheters; Hollow probes
    • A61M25/0067—Catheters; Hollow probes characterised by the distal end, e.g. tips
    • A61M25/0068—Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure
    • A61M25/007—Side holes, e.g. their profiles or arrangements; Provisions to keep side holes unblocked
    • 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
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/06—Body-piercing guide needles or the like
    • A61M25/0662—Guide tubes

Abstract

PROBLEM TO BE SOLVED: To provide a medical appliance which enables a fluid to be circumferentially and uniformly discharged within an organism, and which improves kink resistance.SOLUTION: A medical appliance 1 includes a long member that comprises: an insertion lumen 20 that enables insertion of a medical appliance comprising a long body part; a fluid lumen 30 in which a spirally elongated spiral part 31 is formed and through which a fluid F can be circulated; and at least two discharge parts 32 which are provided in different axial positions of the spiral part 31 of the fluid lumen 30, and which discharges the fluid F circulated through the fluid lumen 30.

Description

本発明は、生体内への流体の供給に用いられる医療器具に関する。   The present invention relates to a medical instrument used for supplying fluid into a living body.

生体内において各種の流体を供給するために用いられるイリゲーション（灌流）用のカテーテルデバイスが広く知られている。このようなカテーテルデバイスにおいて流体が流通するルーメンは、吐出孔以外の部分から流体が漏れないよう密閉して構成される。このため、例えば、カテーテルデバイスにガイドワイヤを挿通させる機能を付加する場合、ガイドワイヤを挿通させるルーメンと流体を流通させるルーメンとをそれぞれ別個に設ける必要がある。しかし、カテーテルデバイスの周囲の各方向においてバランスよく送液・吸引を行うことができるようにするためには、イリゲーションルーメンに設けられる吐出孔は周方向の異なる位置にそれぞれ配置されていることが好ましい。したがって、ガイドワイヤルーメンとの関係で、どのように吐出孔を配置するのがよいかといった点が課題となる。   An catheter device for irrigation (perfusion) used for supplying various fluids in a living body is widely known. In such a catheter device, the lumen through which the fluid flows is configured to be sealed so that the fluid does not leak from a portion other than the discharge hole. For this reason, for example, when a function of inserting a guide wire into a catheter device is added, it is necessary to separately provide a lumen through which the guide wire is inserted and a lumen through which a fluid flows. However, in order to be able to perform liquid feeding / suction in a balanced manner in each direction around the catheter device, it is preferable that the discharge holes provided in the irrigation lumen are respectively arranged at different positions in the circumferential direction. . Therefore, the problem is how to arrange the discharge holes in relation to the guide wire lumen.

このような課題に対し、例えば、下記特許文献１に記載されたようなカテーテルデバイスが存在する。このカテーテルデバイスには、ガイドワイヤ等が挿通可能であり、かつ、流体が流通可能なメインルーメンと、メインルーメンと同軸方向に伸びるイリゲーション用ルーメンと、バルーンを拡張するための流体が流通する２つの加圧媒体用のルーメンとが備えられている。また、メインルーメンには、周方向の１２０度おきに側孔が設けられているため、周方向にバランスよく造影剤などの放出が行える他、送液を行う際、一つの孔が詰まったとしても、他の孔を使用できるといった利点がある。   For such a problem, for example, there is a catheter device as described in Patent Document 1 below. In this catheter device, a guide wire or the like can be inserted and a main lumen through which fluid can flow, an irrigation lumen extending coaxially with the main lumen, and two fluids through which the fluid for expanding the balloon flows And a lumen for the pressurized medium. In addition, since the main lumen is provided with side holes every 120 degrees in the circumferential direction, the contrast medium and the like can be released in a balanced manner in the circumferential direction, and one hole is clogged during liquid feeding. However, there is an advantage that other holes can be used.

特開平１０−２８７３８号公報JP-A-10-28738

しかし、上記のように側孔を軸方向の異なる位置に複数設けてしまうと、カテーテルデバイスの軸方向における耐キンク性が低下してしまうため、生体内への導入時に撚れや折れなどの破損が生じ易くなるという問題がある。   However, if a plurality of side holes are provided at different positions in the axial direction as described above, the kink resistance in the axial direction of the catheter device will be reduced, so that damage such as twisting or breaking during introduction into the living body will occur. There is a problem that is likely to occur.

そこで、本発明は、上記課題を解決するために発明されたものであり、生体内において流体を周方向へ均一に吐出させることができ、かつ、耐キンク性が向上された医療器具を提供することを目的とする。   Therefore, the present invention has been invented to solve the above-described problems, and provides a medical instrument that can uniformly discharge a fluid in a circumferential direction in a living body and has improved kink resistance. For the purpose.

上記目的は、下記（１）〜（１１）に記載のいずれかの発明により達成される。   The above object is achieved by any one of the inventions described in (1) to (11) below.

（１）長尺状の本体部を備える医療器具が挿通可能な挿通ルーメンと、螺旋状に伸びる螺旋部が形成され、流体が流通可能な流体ルーメンと、前記流体ルーメンの螺旋部における軸方向の異なる位置に少なくとも２つ以上設けられ、前記流体ルーメンを流通する流体を吐出させる吐出部と、を備える長尺部材を有する医療器具。   (1) An insertion lumen through which a medical instrument having an elongated body portion can be inserted, a fluid lumen in which a spiral portion extending in a spiral shape is formed, and a fluid can flow therethrough, and an axial direction in the spiral portion of the fluid lumen A medical instrument having a long member provided with at least two or more discharge portions that are provided at different positions and discharge fluid flowing through the fluid lumen.

（２）前記長尺部材の内部空間に配置され、前記挿通ルーメンと前記流体ルーメンとを区画する隔壁部材をさらに有する、上記（１）に記載の医療器具。   (2) The medical device according to (1), further including a partition member that is disposed in an internal space of the elongate member and partitions the insertion lumen and the fluid lumen.

（３）前記隔壁部材の剛性は、前記長尺部材の剛性よりも大きい、上記（２）に記載の医療器具。   (3) The medical device according to (2), wherein the rigidity of the partition member is larger than the rigidity of the long member.

（４）前記長尺部材は、前記挿通ルーメンを形成する内腔を備える第１の長尺片と、前記流体ルーメンを形成する内腔を備える第２の長尺片と、を有する上記（１）に記載の医療器具。   (4) The long member includes a first long piece including a lumen forming the insertion lumen, and a second long piece including a lumen forming the fluid lumen (1) ) Medical device.

（５）前記第１の長尺片は、軸方向に延伸された直線形状を有し、前記第２の長尺片は、前記第１の長尺片の軸周りに螺旋状に巻き付けられて配置される、上記（４）に記載の医療器具。   (5) The first long piece has a linear shape extending in the axial direction, and the second long piece is spirally wound around an axis of the first long piece. The medical device according to (4), which is disposed.

（６）前記第１の長尺片と前記第２の長尺片とが軸方向において互いに螺旋状に巻き付けられて配置される、上記（４）に記載の医療器具。   (6) The medical instrument according to (4), wherein the first long piece and the second long piece are arranged so as to be spirally wound in the axial direction.

（７）前記第１の長尺片の剛性は、前記第２の長尺片において前記螺旋部が形成された部位の剛性よりも大きい、上記（５）または（６）に記載の医療器具。   (7) The medical instrument according to (5) or (6), wherein the rigidity of the first long piece is greater than the rigidity of the portion where the spiral portion is formed in the second long piece.

（８）前記螺旋部は、前記長尺部材の先端側の所定の範囲にのみ形成されている、上記（１）〜（７）のいずれか１つに記載の医療器具。   (8) The medical device according to any one of (1) to (7), wherein the spiral portion is formed only in a predetermined range on a distal end side of the long member.

（９）前記吐出部は、前記長尺部材の軸周りに互いに等間隔を空けて配置されている、上記（１）〜（８）のいずれか１つに記載の医療器具。   (9) The medical device according to any one of (1) to (8), wherein the discharge units are arranged at equal intervals around an axis of the long member.

（１０）前記吐出部は吐出孔によって構成され、前記長尺部材の先端側に設けられた吐出部の径は、前記長尺部材の基端側に位置する吐出部の径よりも大きく形成されている、上記（１）〜（９）のいずれか１つに記載の医療器具。   (10) The discharge part is constituted by a discharge hole, and the diameter of the discharge part provided on the distal end side of the long member is formed larger than the diameter of the discharge part located on the proximal end side of the long member. The medical device according to any one of (1) to (9) above.

（１１）前記長尺部材に設けられ、加圧媒体の注入および排出によって拡張・収縮変形可能なバルーンをさらに有する上記（１）〜（１０）のいずれか１つに記載の医療器具。   (11) The medical device according to any one of (1) to (10), further including a balloon provided on the long member and capable of being expanded and contracted by injection and discharge of a pressurized medium.

上記（１）に記載の発明によれば、流体ルーメンに螺旋部が形成され、当該螺旋部の軸方向の異なる位置に吐出部が少なくとも２つ以上設けられているため、生体内において流体を周方向へ均一に吐出させることができ、かつ、耐キンク性が向上された医療器具を提供することができる。   According to the invention described in (1) above, the spiral portion is formed in the fluid lumen, and at least two or more discharge portions are provided at different positions in the axial direction of the spiral portion. It is possible to provide a medical device that can be uniformly discharged in the direction and has improved kink resistance.

上記（２）に記載の発明によれば、長尺部材の内部空間に配置された隔壁部材によって挿通ルーメンと流体ルーメンとを区画するため、１本の長尺部材によって挿通ルーメンおよび流体ルーメンを形成することができ、医療器具を細径化できる。   According to the invention described in (2) above, since the insertion lumen and the fluid lumen are partitioned by the partition wall member arranged in the internal space of the long member, the insertion lumen and the fluid lumen are formed by one long member. And can reduce the diameter of the medical device.

上記（３）に記載の発明によれば、隔壁部材の剛性が、長尺部材の剛性よりも大きいため、医療器具全体としても剛性を高められ、医療器具の耐キンク性をより向上させることができる。   According to the invention described in (3) above, since the rigidity of the partition member is larger than that of the long member, the rigidity of the entire medical instrument can be increased and the kink resistance of the medical instrument can be further improved. it can.

上記（４）に記載の発明によれば、挿通ルーメンが第１の長尺片によって形成され、流体ルーメンが第２の長尺片によって形成されるため、挿通ルーメン及び流体ルーメンを容易に形成することができる。   According to the invention described in (4) above, since the insertion lumen is formed by the first long piece and the fluid lumen is formed by the second long piece, the insertion lumen and the fluid lumen are easily formed. be able to.

上記（５）に記載の発明によれば、第２の長尺片を、軸方向に延伸された直線形状を有する第１の長尺片の軸周りに螺旋状に巻き付けられて配置されるため、螺旋部を容易に形成することができる。   According to the invention described in (5) above, the second long piece is disposed by being spirally wound around the axis of the first long piece having a linear shape extending in the axial direction. The spiral portion can be easily formed.

上記（６）に記載の発明によれば、第１の長尺片と第２の長尺片とが互いに螺旋状に巻き付けられて配置されるため、医療器具全体としても剛性を高められ、医療器具の耐キンク性をより向上させることができる。   According to the invention described in (6) above, since the first long piece and the second long piece are arranged so as to be spirally wound with each other, the rigidity of the entire medical instrument can be increased, The kink resistance of the instrument can be further improved.

上記（７）に記載の発明によれば、第１の長尺片の剛性は比較的高く設けられるため、医療器具の耐キンク性を向上させることができる。また、比較的剛性の低い螺旋部を比較的剛性の高い第１の長尺片の外周に巻き付けて螺旋部を形成するため、螺旋部を容易に形成することができる。   According to the invention as described in said (7), since the rigidity of a 1st elongate piece is provided comparatively high, the kink resistance of a medical device can be improved. In addition, since the spiral portion is formed by winding the relatively rigid spiral portion around the outer periphery of the relatively long first long piece, the spiral portion can be easily formed.

上記（８）に記載の発明によれば、長尺部材の先端側の所定の範囲にのみ螺旋部が形成されるため、螺旋部を容易に形成できる。また、最低限必要な範囲にのみ螺旋部を形成すればよく、医療器具の製造コストを低下できる。   According to the invention described in (8) above, since the spiral portion is formed only in a predetermined range on the distal end side of the long member, the spiral portion can be easily formed. Further, the spiral portion only needs to be formed in the minimum necessary range, and the manufacturing cost of the medical instrument can be reduced.

上記（９）に記載の発明によれば、吐出部が軸周りに等間隔に配置されているため、生体内において流体を長尺部材の周方向へ均一に吐出させることができる。   According to the invention described in (9) above, since the discharge portions are arranged at equal intervals around the axis, the fluid can be discharged uniformly in the circumferential direction of the long member in the living body.

上記（１０）に記載の発明によれば、先端側に設けられた吐出部の径が基端側に設けられた吐出部の径よりも大きく形成するため、各吐出部からの吐出量を同じにすることができ、生体内において流体を周方向へ均一に吐出させることができる。   According to the invention described in (10) above, since the diameter of the discharge part provided on the distal end side is formed larger than the diameter of the discharge part provided on the proximal end side, the discharge amount from each discharge part is the same. The fluid can be uniformly discharged in the circumferential direction in the living body.

上記（１１）に記載の発明によれば、拡張・収縮変形可能なバルーンをさらに有するため、狭窄部を有する生体内にも、バルーンによって狭窄部を拡張することで、流体を供給可能であり、バルーンカテーテル一体型の医療器具を提供することができる。   According to the invention described in (11) above, since it further has a balloon that can be expanded and contracted, a fluid can be supplied to a living body having a stenosis part by expanding the stenosis part with the balloon. A medical device integrated with a balloon catheter can be provided.

本発明の第１実施形態に係る医療器具を示す斜視図である。It is a perspective view which shows the medical device which concerns on 1st Embodiment of this invention. 本発明の第１実施形態に係る医療器具を示す側面図である。It is a side view which shows the medical device which concerns on 1st Embodiment of this invention. 図２の３−３線に沿う断面図である。It is sectional drawing which follows the 3-3 line of FIG. 本発明の第１実施形態において、生体内に流体を供給する様子を示す図である。In 1st Embodiment of this invention, it is a figure which shows a mode that a fluid is supplied in the biological body. 本発明の第２実施形態に係る医療器具を示す斜視図である。It is a perspective view which shows the medical device which concerns on 2nd Embodiment of this invention. 本発明の第２実施形態において、生体内に流体を供給する様子を示す図である。In 2nd Embodiment of this invention, it is a figure which shows a mode that a fluid is supplied in the biological body. 本発明の第３実施形態に係る医療器具を示す斜視図である。It is a perspective view which shows the medical device which concerns on 3rd Embodiment of this invention. 本発明の第３実施形態において、生体内に流体を供給する様子を示す図である。In 3rd Embodiment of this invention, it is a figure which shows a mode that a fluid is supplied in the living body. （改変例１）に係る医療器具を示す側面断面図である。It is side surface sectional drawing which shows the medical device which concerns on (modification example 1). （改変例２）に係る医療器具を示す側面図である。It is a side view which shows the medical device which concerns on (modification example 2).

＜第１実施形態＞
以下、図面を参照して、本発明の実施の形態を説明する。なお、図面の寸法比率は、説明の都合上、誇張されて実際の比率とは異なる場合がある。また、以下の説明において、本発明の第１実施形態に係る医療器具１の手元操作側を「基端側」、生体管腔内へ挿通される側を「先端側」と称する。 <First Embodiment>
Embodiments of the present invention will be described below with reference to the drawings. In addition, the dimension ratio of drawing is exaggerated on account of description, and may differ from an actual ratio. In the following description, the proximal operation side of the medical instrument 1 according to the first embodiment of the present invention is referred to as a “proximal end side”, and the side inserted into the living body lumen is referred to as a “distal end side”.

本発明の第１実施形態に係る医療器具１の構成について説明する。   The configuration of the medical instrument 1 according to the first embodiment of the present invention will be described.

図１は、本発明の第１実施形態に係る医療器具１を示す斜視図である。図２は、本発明の第１実施形態に係る医療器具１を示す側面図である。図３は、図２の３−３線に沿う断面図である。   FIG. 1 is a perspective view showing a medical instrument 1 according to the first embodiment of the present invention. FIG. 2 is a side view showing the medical device 1 according to the first embodiment of the present invention. FIG. 3 is a cross-sectional view taken along line 3-3 in FIG.

本発明の第１実施形態に係る医療器具１は、概説すると、図１〜３に示すように、長尺状の本体部を備える医療器具（不図示）が挿通可能な挿通ルーメン２０と、螺旋状に伸びる第２螺旋部（螺旋部）３１が形成され、流体Ｆが流通可能な流体ルーメン３０と、流体ルーメン３０の第２螺旋部３１における軸方向の異なる位置に６つ設けられ、流体ルーメン３０を流通する流体Ｆを吐出させる吐出部３２と、を備える長尺部材１０を有する。なお、図３では理解の容易のため、吐出部３２は省略する。以下、詳述する。   Briefly, the medical device 1 according to the first embodiment of the present invention, as shown in FIGS. 1 to 3, includes an insertion lumen 20 through which a medical device (not shown) having a long body portion can be inserted, and a spiral. The second spiral portion (spiral portion) 31 extending in a shape is formed, and six fluid lumens 30 through which the fluid F can flow and six axially different positions in the second spiral portion 31 of the fluid lumen 30 are provided, and the fluid lumen And a discharge part 32 that discharges the fluid F flowing through 30. In FIG. 3, the discharge unit 32 is omitted for easy understanding. Details will be described below.

医療器具１は、図１〜３に示すように、長尺状の本体部を備える医療器具（不図示）が挿通可能な挿通ルーメン２０と、螺旋状に伸びる第２螺旋部３１が形成され、流体が流通可能な流体ルーメン３０と、流体ルーメン３０の第２螺旋部３１における軸方向の異なる位置に６つ設けられ、流体ルーメン３０を流通する流体Ｆを吐出させる吐出部３２と、を備える長尺部材１０及び長尺部材１０の内部空間に配置され、挿通ルーメン２０と流体ルーメン３０とを区画する隔壁部材４０を有する。   As shown in FIGS. 1 to 3, the medical instrument 1 is formed with an insertion lumen 20 into which a medical instrument (not shown) having a long main body part can be inserted, and a second spiral part 31 extending spirally. A length provided with a fluid lumen 30 through which fluid can flow and six discharge portions 32 that are provided at six different positions in the axial direction in the second spiral portion 31 of the fluid lumen 30 and discharge the fluid F flowing through the fluid lumen 30. The partition member 40 is disposed in the internal space of the long member 10 and the long member 10, and partitions the insertion lumen 20 and the fluid lumen 30.

長尺部材１０は、内部に挿通ルーメン２０および流体ルーメン３０を形成する。長尺部材１０を構成する材料は、例えば、生体適合性に優れた、ＥＴＦＥ（テトラフルオロ ４ エチレンエチレン共重合体）、ＰＴＦＥ（ポリテトラフルオロエチレン）等のフッ素樹脂、ＰＥ（ポリエチレン）、ＰＰ（ポリプロピレン）等のポリオレフィン、ポリアミド、ポリエステル、ポリウレタン等の熱可塑性樹脂である。   The long member 10 forms an insertion lumen 20 and a fluid lumen 30 therein. Materials constituting the long member 10 are, for example, fluororesins such as ETFE (tetrafluoro 4 ethylene ethylene copolymer) and PTFE (polytetrafluoroethylene), PE (polyethylene), PP (excellent in biocompatibility). A thermoplastic resin such as polyolefin such as polypropylene), polyamide, polyester, and polyurethane.

挿通ルーメン２０には、長尺状の本体部を備える医療器具が挿通される。挿通ルーメン２０は、長尺部材１０の内周面１０Ｓと隔壁部材４０とによって構成される第１の空間Ｓ１によって形成される。挿通ルーメン２０は、長尺部材１０の先端側の所定の範囲にのみ形成されている第１螺旋部２１を有する。   A medical instrument having a long main body is inserted through the insertion lumen 20. The insertion lumen 20 is formed by a first space S <b> 1 configured by the inner peripheral surface 10 </ b> S of the long member 10 and the partition member 40. The insertion lumen 20 includes a first spiral portion 21 that is formed only in a predetermined range on the distal end side of the long member 10.

第１螺旋部２１は、先端側の所定の範囲が螺旋状に形成された隔壁部材４０によって構成される。よって、第１螺旋部２１は長尺部材１０の先端側の所定の範囲にのみ形成される。   The first spiral portion 21 is configured by a partition member 40 in which a predetermined range on the tip side is formed in a spiral shape. Therefore, the first spiral portion 21 is formed only in a predetermined range on the distal end side of the long member 10.

流体ルーメン３０は、流体Ｆが流通する。流体ルーメン３０は、長尺部材１０の内表面１０Ｓと隔壁部材４０とによって構成される第２の空間Ｓ２によって形成される。第２の空間Ｓ２は、長尺部材１０の内部空間において、隔壁部材４０を介して、第１の空間Ｓ１の反対側に設けられる。また、流体ルーメン３０は、長尺部材１０の先端側の所定の範囲にのみ形成されている第２螺旋部３１と、当該第２螺旋部３１における軸方向の異なる位置に６つ設けられ、流体ルーメン３０を流通する流体Ｆを吐出させる吐出部３２と、を有する。   A fluid F flows through the fluid lumen 30. The fluid lumen 30 is formed by the second space S <b> 2 constituted by the inner surface 10 </ b> S of the long member 10 and the partition member 40. The second space S <b> 2 is provided on the opposite side of the first space S <b> 1 through the partition member 40 in the internal space of the long member 10. Further, six fluid lumens 30 are provided at six different positions in the axial direction in the second spiral portion 31 and the second spiral portion 31 formed only in a predetermined range on the distal end side of the long member 10, And a discharge section 32 that discharges the fluid F flowing through the lumen 30.

第２螺旋部３１は、応力の集中を分散させることにより、医療器具１の耐キンク性を向上させるために設けられている。第２螺旋部３１は、先端側の所定の範囲が螺旋状に形成された隔壁部材４０によって構成される。よって、第２螺旋部３１は長尺部材１０の先端側の所定の範囲にのみ形成される。   The second spiral portion 31 is provided to improve the kink resistance of the medical instrument 1 by dispersing the stress concentration. The second spiral portion 31 is configured by a partition member 40 in which a predetermined range on the tip side is formed in a spiral shape. Therefore, the second spiral portion 31 is formed only in a predetermined range on the distal end side of the long member 10.

吐出部３２は、吐出孔によって構成され、流体ルーメン３０を流通する流体Ｆを吐出させる。吐出部３２は、長尺部材１０の軸周りおよび軸方向に互いに等間隔を開けて６つ配置されている。すなわち、吐出部３２は、基端側から第１吐出部３２Ａ、第２吐出部３２Ｂ、第３吐出部３２Ｃ、第４吐出部３２Ｄ、第５吐出部３２Ｅ、第６吐出部３２Ｆから構成され、第１吐出部３２Ａ〜第６吐出部３２Ｆは、それぞれ長尺部材１０の軸周りに６０度間隔で、長尺部材１０の軸方向に１ｍｍ間隔で設けられている。なお、軸方向の間隔は１ｍｍに限られない。また、長尺部材１０の先端側に設けられた吐出部３２の径は、長尺部材１０の基端側に設けられた吐出部３２の径よりも大きく形成されている。すなわち、第１吐出部３２Ａから第６吐出部３２Ｆにかけて順次、径が拡大されて構成される。なお、第１吐出部３２Ａ〜第６吐出部３２Ｆが全て同じ径を有していてもよい。   The discharge part 32 is constituted by a discharge hole, and discharges the fluid F flowing through the fluid lumen 30. Six discharge parts 32 are arranged at equal intervals around and around the axis of the long member 10. That is, the discharge unit 32 includes a first discharge unit 32A, a second discharge unit 32B, a third discharge unit 32C, a fourth discharge unit 32D, a fifth discharge unit 32E, and a sixth discharge unit 32F from the base end side. The first discharge part 32A to the sixth discharge part 32F are provided at intervals of 60 degrees around the axis of the long member 10 and at intervals of 1 mm in the axial direction of the long member 10, respectively. The axial interval is not limited to 1 mm. Further, the diameter of the discharge part 32 provided on the distal end side of the long member 10 is formed larger than the diameter of the discharge part 32 provided on the proximal end side of the long member 10. That is, the diameter is sequentially enlarged from the first discharge part 32A to the sixth discharge part 32F. Note that the first discharge part 32A to the sixth discharge part 32F may all have the same diameter.

隔壁部材４０は、長尺部材１０の内部空間に配置され、挿通ルーメン２０と流体ルーメン３０とを区画する。隔壁部材４０は、長尺部材１０の先端側の所定の範囲にのみ螺旋状に形成されており、当該先端側の所定の範囲より基端側の範囲は、平面状に形成されている。また、隔壁部材４０は、長尺部材１０の剛性よりも大きい剛性を有している。この構成によれば、医療器具１全体としても剛性を高められ、医療器具１の耐キンク性を向上させることができる。隔壁部材４０を構成する材料は、例えばニッケルチタン合金やステンレス鋼等の金属材料であるが、これに限られずプラスチック等であってもよい。   The partition member 40 is disposed in the internal space of the long member 10 and partitions the insertion lumen 20 and the fluid lumen 30. The partition member 40 is formed in a spiral shape only in a predetermined range on the distal end side of the long member 10, and a range on the proximal end side from the predetermined range on the distal end side is formed in a planar shape. Further, the partition member 40 has a rigidity larger than that of the long member 10. According to this configuration, the rigidity of the medical instrument 1 as a whole can be increased, and the kink resistance of the medical instrument 1 can be improved. Although the material which comprises the partition member 40 is metal materials, such as nickel titanium alloy and stainless steel, for example, it is not restricted to this, A plastic etc. may be sufficient.

流体Ｆは、生体内へ供給されて、生体内の洗浄などを行う。流体Ｆは例えば生理食塩水であるが、これに限られない。   The fluid F is supplied into the living body to perform cleaning in the living body. The fluid F is, for example, physiological saline, but is not limited thereto.

次に、図４を参照して、本発明の第１実施形態に係る医療器具１を使用して生体内に流体Ｆを供給する方法を説明する。   Next, a method for supplying the fluid F into the living body using the medical instrument 1 according to the first embodiment of the present invention will be described with reference to FIG.

術者は、流体Ｆが貯蔵される流体貯蔵部Ａから、当該流体貯蔵部Ａと流体ルーメン３０とを液密・気密に連結した公知のチューブＴを介して、流体ルーメン３０内に流体Ｆを供給する。流体ルーメン３０内に供給された流体Ｆは、基端側から先端側へ移動し、先端側に設けられた吐出部３２から、第１吐出部３２Ａ、第２吐出部３２Ｂ、第３吐出部３２Ｃ、第４吐出部３２Ｄ、第５吐出部３２Ｅ、第６吐出部３２Ｆの順で吐出される。ここで、第１吐出部３２Ａから第６吐出部３２Ｆにかけて順次、径が拡大されて構成されるため、基端側に位置する吐出部３２から吐出する吐出量と先端側に位置する吐出部３２から吐出する吐出量とを同じにすることができ、生体内において流体Ｆを周方向へ均一に吐出させることができる。   The surgeon transfers the fluid F from the fluid storage part A in which the fluid F is stored into the fluid lumen 30 through a known tube T in which the fluid storage part A and the fluid lumen 30 are connected in a liquid-tight and air-tight manner. Supply. The fluid F supplied into the fluid lumen 30 moves from the proximal end side to the distal end side, and from the ejection section 32 provided on the distal end side, the first ejection section 32A, the second ejection section 32B, and the third ejection section 32C. The fourth discharge part 32D, the fifth discharge part 32E, and the sixth discharge part 32F are discharged in this order. Here, since the diameter is sequentially enlarged from the first discharge part 32A to the sixth discharge part 32F, the discharge amount discharged from the discharge part 32 located on the proximal end side and the discharge part 32 located on the distal end side are arranged. The discharge amount discharged from the same can be made the same, and the fluid F can be discharged uniformly in the circumferential direction in the living body.

以上のように、本発明の第１実施形態によれば、流体ルーメン３０に第２螺旋部３１が形成され、当該第２螺旋部３１の軸方向の異なる位置に６つの吐出部３２Ａ〜３２Ｆが設けられているため、生体内において流体Ｆを周方向へ均一に吐出させることができ、かつ、耐キンク性が向上された医療器具１を提供することができる。   As described above, according to the first embodiment of the present invention, the second spiral portion 31 is formed in the fluid lumen 30, and the six discharge portions 32A to 32F are located at different positions in the axial direction of the second spiral portion 31. Since the medical device 1 is provided, the fluid F can be uniformly discharged in the circumferential direction in the living body, and the medical instrument 1 with improved kink resistance can be provided.

また、長尺部材１０の内部空間に配置され、挿通ルーメン２０と流体ルーメン３０とを区画する隔壁部材４０をさらに有するため、１本の長尺部材１０によって挿通ルーメン２０および流体ルーメン３０を形成することができ、医療器具１を細径化できる。   In addition, since it further includes a partition member 40 that is disposed in the internal space of the long member 10 and divides the insertion lumen 20 and the fluid lumen 30, the insertion lumen 20 and the fluid lumen 30 are formed by the single long member 10. And the diameter of the medical device 1 can be reduced.

また、隔壁部材４０の剛性は、長尺部材１０の剛性よりも大きいため、医療器具１全体としても剛性を高められ、医療器具１の耐キンク性をより向上させることができる。   Moreover, since the rigidity of the partition member 40 is larger than the rigidity of the long member 10, the rigidity of the medical instrument 1 as a whole can be increased, and the kink resistance of the medical instrument 1 can be further improved.

また、第２螺旋部３１は、長尺部材１０の先端側の所定の範囲にのみ形成されているため、第２螺旋部３１を容易に形成できる。また、最低限必要な範囲にのみ第２螺旋部３１を形成すればよく、医療器具１の製造コストを低下できる。   Moreover, since the 2nd spiral part 31 is formed only in the predetermined range of the front end side of the elongate member 10, the 2nd spiral part 31 can be formed easily. Moreover, what is necessary is just to form the 2nd spiral part 31 only in the minimum required range, and the manufacturing cost of the medical device 1 can be reduced.

また、吐出部３２は、長尺部材１０の軸周りに互いに等間隔を空けて配置されているため、生体内において流体Ｆを長尺部材１０の周方向へ均一に吐出させることができる。   Moreover, since the discharge part 32 is arrange | positioned at equal intervals around the axis | shaft of the elongate member 10, it can discharge the fluid F uniformly in the circumferential direction of the elongate member 10 in the living body.

また、吐出部３２は吐出孔によって構成され、長尺部材１０の先端側に設けられた吐出部３２の径は、長尺部材１０の基端側に設けられた吐出部３２の径よりも大きく形成されている。このため、各吐出部３２からの吐出量を同じにすることができ、生体内において流体Ｆを周方向へ均一に吐出させることができる。   Moreover, the discharge part 32 is comprised by the discharge hole, and the diameter of the discharge part 32 provided in the front end side of the elongate member 10 is larger than the diameter of the discharge part 32 provided in the base end side of the elongate member 10. Is formed. For this reason, the discharge amount from each discharge part 32 can be made the same, and the fluid F can be uniformly discharged in the circumferential direction in the living body.

また、第２螺旋部３１は螺旋状に形成されるため、流体Ｆに周方向の力が付与され、吐出力が向上する。   Further, since the second spiral portion 31 is formed in a spiral shape, a force in the circumferential direction is applied to the fluid F, and the discharge force is improved.

＜第２実施形態＞
次に、本発明の第２実施形態を説明する。第１実施形態と共通する部分は説明を省略し、第２実施形態のみに特徴のある箇所について説明する。 Second Embodiment
Next, a second embodiment of the present invention will be described. Description of parts common to the first embodiment will be omitted, and only features unique to the second embodiment will be described.

図５は、本発明の第２実施形態に係る医療器具２を示す斜視図である。   FIG. 5 is a perspective view showing a medical instrument 2 according to the second embodiment of the present invention.

本発明の第２実施形態に係る医療器具２は、図５に示すように、長尺状の本体部を備える医療器具（不図示）が挿通可能な挿通ルーメン２２０Ｌと、螺旋状に伸びる螺旋部２３１が形成され、流体Ｆが流通可能な流体ルーメン２３０Ｌと、流体ルーメン２３０Ｌの螺旋部２３１における軸方向の異なる位置に６つ設けられ、流体ルーメン２３０Ｌを流通する流体Ｆを吐出させる吐出部２３２と、を備える長尺部材２１０を有する。   As shown in FIG. 5, the medical device 2 according to the second embodiment of the present invention includes an insertion lumen 220 </ b> L through which a medical device (not shown) having a long body portion can be inserted, and a spiral portion that extends in a spiral shape. A fluid lumen 230L in which the fluid F can be circulated, and six discharge portions 232 that are provided at six different positions in the axial direction of the spiral portion 231 of the fluid lumen 230L and discharge the fluid F that circulates through the fluid lumen 230L. The elongate member 210 is provided.

長尺部材２１０は、挿通ルーメン２２０Ｌを形成する内腔を備える第１の長尺片２２０と、流体ルーメン２３０Ｌを形成する内腔を備える第２の長尺片２３０と、を有する。   The elongate member 210 includes a first elongate piece 220 having a lumen that forms an insertion lumen 220L, and a second elongate piece 230 having a lumen that forms a fluid lumen 230L.

第１の長尺片２２０は、内部に挿通ルーメン２２０Ｌを形成する。また、第１の長尺片２２０は、軸方向に延伸された直線形状を有する。また、第１の長尺片２２０の剛性は、第２の長尺片２３０において螺旋部２３１が形成された部位の剛性よりも大きい。この構成によれば、第１の長尺片２２０の剛性が比較的高く設けられるため、医療器具２の耐キンク性を向上させることができる。また、比較的剛性の低い螺旋部２３１を比較的剛性の高い第１の長尺片２２０の外周に巻き付けて螺旋部２３１を形成するため、螺旋部２３１を容易に形成することができる。なお、第１の長尺片２２０の剛性は、第２の長尺片２３０全体の剛性より大きくてもよい。第１の長尺片２２０を構成する材料は、例えばプラスチックであるが、これに限られずニッケルチタン合金やステンレス鋼等の金属材料であってもよい。   The first long piece 220 forms an insertion lumen 220L therein. Further, the first long piece 220 has a linear shape extending in the axial direction. Further, the rigidity of the first long piece 220 is larger than the rigidity of the portion where the spiral portion 231 is formed in the second long piece 230. According to this structure, since the rigidity of the 1st elongate piece 220 is provided comparatively high, the kink resistance of the medical device 2 can be improved. Further, since the spiral portion 231 is formed by winding the spiral portion 231 having relatively low rigidity around the outer periphery of the first elongated piece 220 having relatively high rigidity, the spiral portion 231 can be easily formed. The rigidity of the first long piece 220 may be greater than the rigidity of the second long piece 230 as a whole. Although the material which comprises the 1st elongate piece 220 is a plastics, for example, it is not restricted to this, Metal materials, such as a nickel titanium alloy and stainless steel, may be sufficient.

第２の長尺片２３０は、内部に流体ルーメン２３０Ｌを形成する。また、第２の長尺片２３０は、長尺部材２１０の先端側の所定の範囲にのみ形成されている螺旋部２３１を有する。第２の長尺片２３０を構成する材料は、例えば、生体適合性に優れた、ＥＴＦＥ（テトラフルオロ ４ エチレンエチレン共重合体）、ＰＴＦＥ（ポリテトラフルオロエチレン）等のフッ素樹脂、ＰＥ（ポリエチレン）、ＰＰ（ポリプロピレン）等のポリオレフィン、ポリアミド、ポリエステル、ポリウレタン等の熱可塑性樹脂である。   The second elongated piece 230 forms a fluid lumen 230L inside. The second long piece 230 has a spiral portion 231 formed only in a predetermined range on the distal end side of the long member 210. The material constituting the second long piece 230 is, for example, a fluororesin such as ETFE (tetrafluoro 4 ethylene ethylene copolymer), PTFE (polytetrafluoroethylene), PE (polyethylene) having excellent biocompatibility. , Polyolefins such as PP (polypropylene), and thermoplastic resins such as polyamide, polyester, and polyurethane.

螺旋部２３１は、医療器具２の耐キンク性を向上させるために設けられている。螺旋部２３１は、第２の長尺片２３０が第１の長尺片２２０の軸周りに螺旋状に巻き付けられて配置されることによって形成される。なお図示しないが、螺旋部２３１を含む医療器具２の外側は別途シース等で覆われていても良い。   The spiral portion 231 is provided to improve the kink resistance of the medical instrument 2. The spiral portion 231 is formed by arranging the second long piece 230 so as to be spirally wound around the axis of the first long piece 220. Although not shown, the outside of the medical instrument 2 including the spiral portion 231 may be separately covered with a sheath or the like.

吐出部２３２は、吐出孔によって構成され、流体ルーメン２３０Ｌを流通する流体Ｆを吐出させる。吐出部２３２は、螺旋部２３１の外周に設けられ、長尺部材２１０の軸周りおよび軸方向に互いに等間隔を空けて６つ配置されている。   The discharge part 232 is comprised by the discharge hole, and discharges the fluid F which distribute | circulates the fluid lumen | rumen 230L. Six discharge portions 232 are provided on the outer periphery of the spiral portion 231, and six discharge portions 232 are arranged at equal intervals around the axis of the long member 210 and in the axial direction.

次に、図６を参照して、本発明の第２実施形態に係る医療器具２を使用して生体内に流体Ｆを供給する方法を説明する。   Next, with reference to FIG. 6, a method for supplying the fluid F into the living body using the medical instrument 2 according to the second embodiment of the present invention will be described.

術者は、流体Ｆが貯蔵される流体貯蔵部Ａから、当該流体貯蔵部Ａと流体ルーメン２３０Ｌとを液密・気密に連結した公知のチューブＴを介して、流体ルーメン２３０Ｌ内に流体Ｆを供給する。流体ルーメン２３０Ｌ内に供給された流体Ｆは、基端側から先端側へ移動し、先端側に設けられた吐出部２３２から、第１吐出部２３２Ａ、第２吐出部２３２Ｂ、第３吐出部２３２Ｃ、第４吐出部２３２Ｄ、第５吐出部２３２Ｅ、第６吐出部２３２Ｆの順で吐出される。   The surgeon transfers the fluid F from the fluid reservoir A in which the fluid F is stored into the fluid lumen 230L via a known tube T in which the fluid reservoir A and the fluid lumen 230L are connected in a liquid-tight and air-tight manner. Supply. The fluid F supplied into the fluid lumen 230L moves from the proximal end side to the distal end side, and from the ejection section 232 provided on the distal end side, the first ejection section 232A, the second ejection section 232B, and the third ejection section 232C. The fourth discharge unit 232D, the fifth discharge unit 232E, and the sixth discharge unit 232F are discharged in this order.

以上のように、本発明の第２実施形態によれば、長尺部材２１０は、挿通ルーメン２２０Ｌを形成する内腔を備える第１の長尺片２２０と、流体ルーメン２３０Ｌを形成する内腔を備える第２の長尺片２３０と、を有するため、挿通ルーメン２２０Ｌが第１の長尺片２２０によって形成され、流体ルーメン２３０Ｌが第２の長尺片２３０によって形成され、挿通ルーメン２２０Ｌ及び流体ルーメン２３０Ｌを容易に形成することができる。   As described above, according to the second embodiment of the present invention, the long member 210 includes the first long piece 220 including the lumen forming the insertion lumen 220L and the lumen forming the fluid lumen 230L. The insertion lumen 220L is formed by the first elongated piece 220, the fluid lumen 230L is formed by the second elongated piece 230, and the insertion lumen 220L and the fluid lumen are provided. 230L can be formed easily.

また、第１の長尺片２２０は、軸方向に延伸された直線形状を有し、第２の長尺片２３０は、第１の長尺片２２０の軸周りに螺旋状に巻き付けられて配置されるため、螺旋部２３１を容易に形成することができる。   Further, the first long piece 220 has a linear shape extending in the axial direction, and the second long piece 230 is wound around the axis of the first long piece 220 in a spiral manner. Therefore, the spiral portion 231 can be easily formed.

また、第１の長尺片２２０の剛性は、第２の長尺片２３０において螺旋部２３１が形成された部位の剛性よりも大きいため、第１の長尺片２２０の剛性は比較的高く設けられ、医療器具２の耐キンク性を向上させることができる。また、比較的剛性の低い螺旋部２３１を比較的剛性の高い第１の長尺片の外周に巻き付けて螺旋部２３１を形成するため、螺旋部２３１を容易に形成することができる。   In addition, the rigidity of the first long piece 220 is relatively high because the rigidity of the first long piece 220 is larger than the rigidity of the portion where the spiral portion 231 is formed in the second long piece 230. Thus, the kink resistance of the medical device 2 can be improved. Further, since the spiral portion 231 is formed by winding the spiral portion 231 having relatively low rigidity around the outer periphery of the first long piece having relatively high rigidity, the spiral portion 231 can be easily formed.

また、第１の長尺片２２０が直線形状であることにより、挿通ルーメン２２０Ｌに医療機器等が挿通し易くなり、医療機器の操作性が向上する。   Further, since the first long piece 220 has a linear shape, it is easy to insert a medical device or the like through the insertion lumen 220L, and the operability of the medical device is improved.

＜第３実施形態＞
次に、本発明の第３実施形態を説明する。第１、２実施形態と共通する部分は省略し、第３実施形態のみに特徴のある箇所について説明する。 <Third Embodiment>
Next, a third embodiment of the present invention will be described. Parts that are common to the first and second embodiments are omitted, and only features that are unique to the third embodiment will be described.

図７は、本発明の第３実施形態に係る医療器具３を示す斜視図である。   FIG. 7 is a perspective view showing a medical instrument 3 according to the third embodiment of the present invention.

本発明の第３実施形態に係る医療器具３は、図７に示すように、長尺状の本体部を備える医療器具（不図示）が挿通可能な挿通ルーメン３２０Ｌと、螺旋状に伸びる第２螺旋部（螺旋部）３３１が形成され、流体Ｆが流通可能な流体ルーメン３３０Ｌと、流体ルーメン３３０Ｌの第２螺旋部３３１における軸方向の異なる位置に６つ設けられ、流体ルーメン３３０Ｌを流通する流体Ｆを吐出させる吐出部３３２と、を備える長尺部材３１０を有する。   As shown in FIG. 7, the medical device 3 according to the third embodiment of the present invention includes an insertion lumen 320 </ b> L through which a medical device (not shown) having a long main body portion can be inserted, and a second that extends in a spiral shape. Six fluid lumens 330L in which a spiral portion (spiral portion) 331 is formed and fluid F can flow, and six fluids that are provided in different positions in the axial direction in the second spiral portion 331 of the fluid lumen 330L and flow through the fluid lumen 330L An elongate member 310 having a discharge portion 332 for discharging F;

長尺部材３１０は、挿通ルーメン３２０Ｌを形成する内腔を備える第１の長尺片３２０と、流体ルーメン３３０Ｌを形成する内腔を備える第２の長尺片３３０と、を有する。   The elongate member 310 includes a first elongate piece 320 having a lumen that forms an insertion lumen 320L, and a second elongate piece 330 having a lumen that forms a fluid lumen 330L.

第１の長尺片３２０は、内部に挿通ルーメン３２０Ｌを形成する。また、第１の長尺片３２０は、長尺部材３１０の先端側の所定の範囲にのみ形成されている第１螺旋部３２１を有する。   The first long piece 320 forms an insertion lumen 320L therein. The first long piece 320 includes a first spiral portion 321 that is formed only in a predetermined range on the distal end side of the long member 310.

第１螺旋部３２１は、第１の長尺片３２０と第２の長尺片３３０とが軸方向において互いに螺旋状に巻き付けられて配置されることによって形成される。   The first spiral portion 321 is formed by arranging the first long piece 320 and the second long piece 330 so as to be spirally wound in the axial direction.

第２の長尺片３３０は、内部に流体ルーメン３３０Ｌを形成する。また、第２の長尺片３３０は、長尺部材３１０の先端側の所定の範囲にのみ形成されている第２螺旋部３３１を有する。   The second elongated piece 330 forms a fluid lumen 330L therein. The second long piece 330 has a second spiral portion 331 that is formed only in a predetermined range on the distal end side of the long member 310.

第２螺旋部３３１は、医療器具３の耐キンク性を向上させるために設けられている。第２螺旋部３３１は、第１の長尺片３２０と第２の長尺片３３０とが軸方向において互いに螺旋状に巻き付けられて配置されることによって形成される。なお図示しないが、第１螺旋部３２１および第２螺旋部３３１を含む医療器具３の外側は別途シース等で覆われていても良い。   The second spiral portion 331 is provided to improve the kink resistance of the medical device 3. The second spiral portion 331 is formed by arranging the first elongate piece 320 and the second elongate piece 330 to be spirally wound in the axial direction. Although not shown, the outer side of the medical device 3 including the first spiral portion 321 and the second spiral portion 331 may be separately covered with a sheath or the like.

次に、図８を参照して、本発明の第３実施形態に係る医療器具３を使用して生体内に流体Ｆを供給する方法を説明する。   Next, with reference to FIG. 8, a method of supplying the fluid F into the living body using the medical instrument 3 according to the third embodiment of the present invention will be described.

術者は、流体Ｆが貯蔵される流体貯蔵部Ａから、当該流体貯蔵部Ａと流体ルーメン３３０Ｌとを液密・気密に連結した公知のチューブＴを介して、流体ルーメン３３０Ｌ内に流体Ｆを供給する。流体ルーメン３３０Ｌ内に供給された流体Ｆは、基端側から先端側へ移動し、先端側に設けられた吐出部３３２から、第１吐出部３３２Ａ、第２吐出部３３２Ｂ、第３吐出部３３２Ｃ、第４吐出部３３２Ｄ、第５吐出部３３２Ｅ、第６吐出部３３２Ｆの順で吐出される。   The surgeon transfers the fluid F from the fluid storage part A in which the fluid F is stored into the fluid lumen 330L via a known tube T in which the fluid storage part A and the fluid lumen 330L are connected in a liquid-tight and air-tight manner. Supply. The fluid F supplied into the fluid lumen 330L moves from the proximal end side to the distal end side, and from the discharge portion 332 provided on the distal end side, the first discharge portion 332A, the second discharge portion 332B, and the third discharge portion 332C. The fourth discharge unit 332D, the fifth discharge unit 332E, and the sixth discharge unit 332F are discharged in this order.

以上のように、本発明の第３実施形態によれば、第１の長尺片３２０と第２の長尺片３３０とが軸方向において互いに螺旋状に巻き付けられて配置されるため、医療器具３全体としても剛性を高められ、医療器具３の耐キンク性をより向上させることができる。   As described above, according to the third embodiment of the present invention, the first elongate piece 320 and the second elongate piece 330 are arranged so as to be spirally wound in the axial direction. The rigidity of the entire 3 can be increased, and the kink resistance of the medical device 3 can be further improved.

以下、上述した実施形態の改変例を例示する。   Hereinafter, modifications of the above-described embodiment will be exemplified.

（改変例１）
図９は、（改変例１）に係る医療器具４を示す側面断面図である。図９では、理解の容易のため吐出部は省略している。図９に示すように、（改変例１）に係る医療器具４は、本発明の第１実施形態の医療器具１に対して、長尺部材４１０の外周に固定され、基端側から加圧媒体Ｐの注入および排出によって拡張・収縮変形可能なバルーン４５０と、加圧媒体ＰをバルーンＢの内部４５０Ｓに供給するバルーンルーメン４６０と、をさらに有する。この構成によれば、流体Ｆを供給する箇所が狭窄部を有する生体内であっても、加圧媒体ＰをバルーンＢに供給してバルーンＢを拡張させて狭窄部を拡張することで、生体内に流体Ｆを供給できるため、バルーンカテーテル一体型の医療器具４を提供することができる。なお、（改変例１）は上述した第２〜３実施形態にも適用可能である。 (Modification 1)
FIG. 9 is a side sectional view showing the medical device 4 according to (Modification 1). In FIG. 9, the discharge part is omitted for easy understanding. As shown in FIG. 9, the medical device 4 according to (Modification 1) is fixed to the outer periphery of the long member 410 and pressurized from the proximal end side with respect to the medical device 1 of the first embodiment of the present invention. It further has a balloon 450 that can be expanded and contracted by injection and discharge of the medium P, and a balloon lumen 460 that supplies the pressurized medium P to the inside 450S of the balloon B. According to this configuration, even if the place where the fluid F is supplied is in a living body having a stenosis, the pressurized medium P is supplied to the balloon B and the balloon B is expanded to expand the stenosis. Since the fluid F can be supplied into the body, the balloon catheter integrated medical device 4 can be provided. Note that (Modification 1) is also applicable to the second to third embodiments described above.

（改変例２）
図１０は、（改変例２）に係る医療器具５を示す側面図である。図１０では、理解の容易のため吐出部は省略している。図１０に示すように、（改変例２）に係る医療器具５は、本発明の第１実施形態の医療器具１に対して、挿通ルーメン５２０内に、先端側に加圧媒体の注入および排出によって拡張・収縮変形可能なバルーンＢを備えたバルーンカテーテルＫが挿通され、長尺部材５１０の基端側に当該バルーンカテーテルＫを挿入するための貫通孔５１０Ａが設けられている。この構成によれば、流体Ｆを供給する箇所が狭窄部を有する生体内であっても、加圧媒体をバルーンＢに供給してバルーンＢを拡張させて狭窄部を拡張することで、生体内に流体Ｆを供給できるため、バルーンカテーテルＫ一体型の医療器具５を提供することができる。なお、（改変例２）は上述した第２〜３実施形態にも適用可能である。 (Modification 2)
FIG. 10 is a side view showing the medical device 5 according to (Modification 2). In FIG. 10, the discharge part is omitted for easy understanding. As shown in FIG. 10, the medical device 5 according to (Modification 2) is injected and discharged with a pressurized medium on the distal end side in the insertion lumen 520 with respect to the medical device 1 of the first embodiment of the present invention. The balloon catheter K provided with the balloon B that can be expanded and contracted is inserted, and a through-hole 510A for inserting the balloon catheter K is provided on the proximal end side of the long member 510. According to this configuration, even if the location where the fluid F is supplied is in a living body having a stenosis, the pressurized medium is supplied to the balloon B to expand the balloon B to expand the stenosis. Since the fluid F can be supplied to the balloon, the medical device 5 integrated with the balloon catheter K can be provided. Note that (Modification 2) is also applicable to the second to third embodiments described above.

なお、本発明は上述した実施の形態に限定されるものではなく、特許請求の範囲内で種々改変することができる。   The present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the claims.

例えば、本発明の第１〜３実施形態では、長尺部材１０の軸周りおよび軸方向に互いに等間隔を空けて６つの吐出部３２、２３２、３３２が設けられていた。しかしながら、吐出部３２、２３２、３３２は、長尺部材１０の軸周りおよび軸方向に互いに等間隔を空けて、少なくとも２つ以上設けられていればよい。また、設けられる間隔は等間隔でなくてもよい。   For example, in the first to third embodiments of the present invention, the six discharge portions 32, 232, and 332 are provided at equal intervals around and in the axial direction of the long member 10. However, at least two discharge units 32, 232, and 332 may be provided at equal intervals around and in the axial direction of the long member 10. Further, the intervals provided may not be equal.

また、本発明の第１〜３実施形態では、流体ルーメン３０、２３０Ｌ、３３０Ｌの螺旋部（第２螺旋部）３１、２３１、３３１は、周方向に１周分のみ設けられていた。しかしながら、複数周分設けられてもよい。この構成によれば、耐キンク性をより向上させることができる。また、流体ルーメン３０、２３０Ｌ、３３０Ｌの螺旋部（第２螺旋部）３１、２３１、３３１が複数周設けられているとき、螺旋部（第２螺旋部）３１、２３１、３３１の周期がそれぞれの螺旋部（第２螺旋部）３１、２３１、３３１で異なっていてもよい。この構成によれば、螺旋部（第２螺旋部）３１、２３１、３３１を形成する位置で、剛性を調整できる。さらに、流体ルーメン３０、２３０Ｌ、３３０Ｌの螺旋部（第２螺旋部）３１、２３１、３３１に沿って吐出部３２、２３２、３３２を複数周分設けてもよい。この構成によれば、より多くの流体Ｆを供給することができる。   In the first to third embodiments of the present invention, the spiral portions (second spiral portions) 31, 231, and 331 of the fluid lumens 30, 230 </ b> L, and 330 </ b> L are provided for only one turn in the circumferential direction. However, a plurality of rounds may be provided. According to this configuration, kink resistance can be further improved. Further, when a plurality of spiral portions (second spiral portions) 31, 231, 331 of the fluid lumens 30, 230 </ b> L, 330 </ b> L are provided, the periods of the spiral portions (second spiral portions) 31, 231, 331 are respectively The spiral portions (second spiral portions) 31, 231 and 331 may be different. According to this configuration, the rigidity can be adjusted at positions where the spiral portions (second spiral portions) 31, 231, and 331 are formed. Furthermore, a plurality of discharge portions 32, 232, 332 may be provided along the spiral portions (second spiral portions) 31, 231, 331 of the fluid lumens 30, 230 L, 330 L. According to this configuration, more fluid F can be supplied.

１、２、３、４、５ 医療器具、
１０、２１０、３１０、４１０ 長尺部材、
２０、２２０Ｌ、３２０Ｌ、５２０ 挿通ルーメン、
３０、２３０Ｌ、３３０Ｌ 流体ルーメン、
３１、２３１、３３１ 螺旋部（第２螺旋部）、
３２、２３２、３３２ 吐出部、
４０ 隔壁部材、
２２０、３２０ 第１の長尺片、
２３０、３３０ 第２の長尺片、
Ｂ バルーン、
Ｆ 流体。 1, 2, 3, 4, 5 medical devices,
10, 210, 310, 410 long member,
20, 220L, 320L, 520 insertion lumen,
30, 230L, 330L fluid lumen,
31, 231, 331 spiral part (second spiral part),
32, 232, 332 discharge part,
40 Bulkhead member,
220, 320 first elongated piece,
230, 330 second elongated piece,
B balloon,
F Fluid.

Claims (11)

長尺状の本体部を備える医療器具が挿通可能な挿通ルーメンと、
螺旋状に伸びる螺旋部が形成され、流体が流通可能な流体ルーメンと、
前記流体ルーメンの螺旋部における軸方向の異なる位置に少なくとも２つ以上設けられ、前記流体ルーメンを流通する流体を吐出させる吐出部と、を備える長尺部材を有する医療器具。 An insertion lumen through which a medical device having an elongated main body can be inserted;
A fluid lumen in which a spiral portion extending in a spiral shape is formed and fluid can flow;
A medical device having an elongate member comprising: at least two or more at different positions in the axial direction of the spiral portion of the fluid lumen, and a discharge portion that discharges fluid flowing through the fluid lumen. 前記長尺部材の内部空間に配置され、前記挿通ルーメンと前記流体ルーメンとを区画する隔壁部材をさらに有する、請求項１に記載の医療器具。   The medical device according to claim 1, further comprising a partition member disposed in an internal space of the elongate member and partitioning the insertion lumen and the fluid lumen. 前記隔壁部材の剛性は、前記長尺部材の剛性よりも大きい、請求項２に記載の医療器具。   The medical device according to claim 2, wherein rigidity of the partition member is larger than rigidity of the long member. 前記長尺部材は、前記挿通ルーメンを形成する内腔を備える第１の長尺片と、前記流体ルーメンを形成する内腔を備える第２の長尺片と、を有する請求項１に記載の医療器具。   The said elongate member has a 1st elongate piece provided with the lumen | bore which forms the said insertion lumen, and a 2nd elongate piece provided with the lumen | bore which forms the said fluid lumen | rumen. Medical instrument. 前記第１の長尺片は、軸方向に延伸された直線形状を有し、
前記第２の長尺片は、前記第１の長尺片の軸周りに螺旋状に巻き付けられて配置される、請求項４に記載の医療器具。 The first elongated piece has a linear shape extending in the axial direction,
The medical device according to claim 4, wherein the second long piece is disposed so as to be spirally wound around an axis of the first long piece. 前記第１の長尺片と前記第２の長尺片とが軸方向において互いに螺旋状に巻き付けられて配置される、請求項４に記載の医療器具。   The medical instrument according to claim 4, wherein the first long piece and the second long piece are arranged so as to be wound spirally with respect to each other in the axial direction. 前記第１の長尺片の剛性は、前記第２の長尺片において前記螺旋部が形成された部位の剛性よりも大きい、請求項５または６に記載の医療器具。   The medical instrument according to claim 5 or 6, wherein the rigidity of the first long piece is larger than the rigidity of a portion where the spiral portion is formed in the second long piece. 前記螺旋部は、前記長尺部材の先端側の所定の範囲にのみ形成されている、請求項１〜７のいずれか１項に記載の医療器具。   The medical device according to any one of claims 1 to 7, wherein the spiral portion is formed only in a predetermined range on a distal end side of the long member. 前記吐出部は、前記長尺部材の軸周りに互いに等間隔を空けて配置されている、請求項１〜８のいずれか１項に記載の医療器具。   The medical device according to any one of claims 1 to 8, wherein the discharge units are arranged at equal intervals around an axis of the long member. 前記吐出部は吐出孔によって構成され、前記長尺部材の先端側に設けられた吐出部の径は、前記長尺部材の基端側に位置する吐出部の径よりも大きく形成されている、請求項１〜９のいずれか１項に記載の医療器具。   The discharge part is constituted by a discharge hole, and the diameter of the discharge part provided on the distal end side of the long member is formed larger than the diameter of the discharge part located on the proximal end side of the long member. The medical device of any one of Claims 1-9. 前記長尺部材に設けられ、加圧媒体の注入および排出によって拡張・収縮変形可能なバルーンをさらに有する請求項１〜１０のいずれか１項に記載の医療器具。   The medical device according to any one of claims 1 to 10, further comprising a balloon provided on the elongate member and capable of being expanded and contracted by injection and discharge of a pressurized medium.
JP2012215396A 2012-09-28 2012-09-28 Medical appliance Pending JP2015231396A (en)

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* Cited by examiner, † Cited by third party
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SE455368B (en) * 1986-11-11 1988-07-11 Roger Hellgren DEVICES FOR INTESTINAL ASPIRATION / PERFUSION
JPH0558154U (en) * 1992-01-22 1993-08-03 クリエートメディック株式会社 Small intestine decompression balloon catheter
EP0872257A3 (en) * 1997-04-15 1999-12-01 Schneider (Europe) GmbH Catheter

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