JP2000014791A - Methods and tools for introducing cannula - Google Patents
Methods and tools for introducing cannulaInfo
- Publication number
- JP2000014791A JP2000014791A JP10186092A JP18609298A JP2000014791A JP 2000014791 A JP2000014791 A JP 2000014791A JP 10186092 A JP10186092 A JP 10186092A JP 18609298 A JP18609298 A JP 18609298A JP 2000014791 A JP2000014791 A JP 2000014791A
- Authority
- JP
- Japan
- Prior art keywords
- guide
- tube
- trocar
- blood vessel
- blood
- 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
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/153—Devices specially adapted for taking samples of venous or arterial blood, e.g. with syringes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150015—Source of blood
- A61B5/15003—Source of blood for venous or arterial blood
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150206—Construction or design features not otherwise provided for; manufacturing or production; packages; sterilisation of piercing element, piercing device or sampling device
- A61B5/150236—Pistons, i.e. cylindrical bodies that sit inside the syringe barrel, typically with an air tight seal, and slide in the barrel to create a vacuum or to expel blood
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150206—Construction or design features not otherwise provided for; manufacturing or production; packages; sterilisation of piercing element, piercing device or sampling device
- A61B5/150244—Rods for actuating or driving the piston, i.e. the cylindrical body that sits inside the syringe barrel, typically with an air tight seal, and slides in the barrel to create a vacuum or to expel blood
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150381—Design of piercing elements
- A61B5/150389—Hollow piercing elements, e.g. canulas, needles, for piercing the skin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150381—Design of piercing elements
- A61B5/150503—Single-ended needles
-
- 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
- A61M25/09—Guide wires
- A61M25/09041—Mechanisms for insertion of guide wires
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/155—Devices specially adapted for continuous or multiple sampling, e.g. at predetermined intervals
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Animal Behavior & Ethology (AREA)
- Hematology (AREA)
- Veterinary Medicine (AREA)
- Biophysics (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Pathology (AREA)
- Surgery (AREA)
- Molecular Biology (AREA)
- Medical Informatics (AREA)
- Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Pulmonology (AREA)
- Anesthesiology (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、カニューラの導入
方法および導入具に係り、さらに詳しくは内頸・鎖骨下
静脈等のような血圧が低い血管にカニューラを留置する
とき等に利用されるカニューラの導入方法および導入具
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and a device for introducing a cannula, and more particularly, to a cannula used for placing a cannula in a blood vessel having a low blood pressure such as an internal jugular or subclavian vein. The present invention relates to an introduction method and an introduction tool.
【0002】[0002]
【従来の技術】図8は従来のカテーテル導入セットの構
成説明図で、(a)は断面図、(b)は分解斜視図、図
9はガイドワイヤ付きのカテーテル導入装置組立体の構
成説明図で、(a)は導入後の断面図、(b)は部分断
面図で、それぞれ特公昭2−5626号と特許第258
4596号の各公報に開示されている。図8(a),
(b)において、1は誘導針、2はカテーテル、3はワ
イヤ案内組立体、6は透明なハブ、15はスプリング・
ワイヤ案内である。また、12はワイヤ案内組立体3の
透明な管状部材、13はスロット、16はスプリング・
ワイヤ案内15用のハンドルである。2. Description of the Related Art FIGS. 8 (a) and 8 (b) are explanatory views of the structure of a conventional catheter introduction set, in which (a) is a sectional view, (b) is an exploded perspective view, and FIG. 9 is an explanatory view of the structure of a catheter introduction device assembly with a guide wire. (A) is a sectional view after introduction, (b) is a partial sectional view, and Japanese Patent Publication No. 2-5626 and Japanese Patent No. 258, respectively.
No. 4,596,459. FIG. 8 (a),
In (b), 1 is a guide needle, 2 is a catheter, 3 is a wire guide assembly, 6 is a transparent hub, and 15 is a spring
It is a wire guide. 12 is a transparent tubular member of the wire guide assembly 3, 13 is a slot, 16 is a spring
This is a handle for the wire guide 15.
【0003】図8(a),(b)に示されたセットは、
滅菌されたパッケージから取り出されて選択された血管
に穿刺される。誘導針1の血管への穿刺は、透明なハブ
6内への血圧による血液の逆流を見て判断される。カテ
ーテル2と誘導針1はそれから所定の位置に保持され、
ハンドル16を外気に開放されたスロット13に沿って
摺動させてスプリング・ワイヤ案内15を血管内に前進
させる。血管内に前進されたスプリング・ワイヤ案内1
5はハブ6をガイドにして、カテーテル2を誘導針1か
ら離して血管内へ導入させる。カテーテル2が完全に導
入されると、管状部材12とスプリング・ワイヤ案内1
5を有する誘導針1が除去されて捨てられるようになっ
ている。The sets shown in FIGS. 8A and 8B are:
Removed from the sterile package and punctured the selected vessel. The puncture of the guide needle 1 into the blood vessel is determined by looking at the backflow of blood due to blood pressure into the transparent hub 6. The catheter 2 and the guide needle 1 are then held in place,
The handle 16 is slid along the slot 13 open to the outside air to advance the spring wire guide 15 into the blood vessel. Spring wire guide 1 advanced into blood vessel
5 guides the catheter 2 into the blood vessel by separating the catheter 2 from the guide needle 1 using the hub 6 as a guide. When the catheter 2 is fully introduced, the tubular member 12 and the spring wire guide 1
The guide needle 1 having 5 is removed and discarded.
【0004】図9(a),(b)において、12はハウ
ジング、22はカテーテル、24はアダプタ、27はア
ダプタ24内部の空洞(不図示)、28はカニューレ、
29は空間、30は針、31と34は針30の内腔と先
端、36はガイドワイヤ、42はプランジャ、48はシ
ール、50は保持部材、52は血液シール、56はノッ
チである。シール48は、プランジャ42がハウジング
12内に押し込まれたときにハウジング12の内腔をシ
ールする。In FIGS. 9 (a) and 9 (b), 12 is a housing, 22 is a catheter, 24 is an adapter, 27 is a cavity (not shown) inside the adapter 24, 28 is a cannula,
29 is a space, 30 is a needle, 31 and 34 are lumens and tips of the needle 30, 36 is a guide wire, 42 is a plunger, 48 is a seal, 50 is a holding member, 52 is a blood seal, and 56 is a notch. Seal 48 seals the lumen of housing 12 when plunger 42 is pushed into housing 12.
【0005】図9のカテーテル22を導入するときは、
血管を確認しプランジャ42の基端46を摘んでガイド
ワイヤ36を引き込めてから針30の尖った先端34を
血管に穿刺する。このとき、シール48は基端14から
離れて、ハウジング12の内腔のシールが開放される。
血管が正しく確保されていると、血圧によって血液がノ
ッチ54を通りカニューレ28と針30との間の環状の
空間29に現れて針30の血管への穿刺が判断される。
プランジャ42が動かされて、ガイドワイヤ36が針3
0の内腔31を通って血管内へと導入される。When the catheter 22 shown in FIG. 9 is introduced,
After confirming the blood vessel, the proximal end 46 of the plunger 42 is pinched and the guide wire 36 is withdrawn, and then the sharp distal end 34 of the needle 30 is punctured into the blood vessel. At this time, the seal 48 is separated from the base end 14 and the seal of the lumen of the housing 12 is opened.
If the blood vessel is properly secured, the blood pressure will cause the blood to pass through the notch 54 and appear in the annular space 29 between the cannula 28 and the needle 30 to determine the puncture of the needle 30 into the blood vessel.
When the plunger 42 is moved, the guide wire 36
The blood vessel is introduced into the blood vessel through the lumen 31 of the blood vessel.
【0006】プランジャ42がハウジング12内へと十
分に押し込まれると、保持部材50が円錐形の部分54
を押し広げてガイドワイヤ36を開放する。この時点
で、カテーテル組立体22をガイドワイヤ36の周囲に
沿ってねじ込んで血管内へと十分に導入することができ
る。カテーテル22が血管内へ導入されると、ハウジン
グ12と針30とがカテーテル22から取り出される。
ガイドワイヤ36はカテーテル22の内腔内に留まり、
これによって、カテーテル22からカテーテル22のア
ダプタ24の空洞27への流れが減じられる。When the plunger 42 is fully pushed into the housing 12, the retaining member 50 moves the conical portion 54.
To open the guide wire 36. At this point, the catheter assembly 22 can be threaded around the circumference of the guidewire 36 and fully introduced into the blood vessel. When the catheter 22 is introduced into a blood vessel, the housing 12 and the needle 30 are removed from the catheter 22.
Guidewire 36 remains within the lumen of catheter 22,
This reduces the flow from the catheter 22 to the cavity 27 of the adapter 24 of the catheter 22.
【0007】[0007]
【発明が解決しようとする課題】上記の図8と図9に示
された従来装置のカテーテル2と22は、何れも血管内
に前進させたスプリング・ワイヤ案内15とガイドワイ
ヤ36にガイドされて血管に導入されるようになってい
る。したがって、これらのカテーテル導入セットとカテ
ーテル導入装置組立体によれば、比較的細い血管でもカ
テーテル2と22を容易に導入することができるという
ことが説明されている。しかしながら、図8と図9に示
された従来装置は、上述のように何れも誘導針1と針3
0の血管への穿刺時には管状部材12とハウジング12
の内部の密封が開放状態になっている。The catheters 2 and 22 of the conventional apparatus shown in FIGS. 8 and 9 are both guided by the spring wire guide 15 and the guide wire 36 advanced into the blood vessel. It is intended to be introduced into blood vessels. Therefore, it is described that the catheter introduction set and the catheter introduction device assembly can easily introduce the catheters 2 and 22 even in a relatively small blood vessel. However, the conventional devices shown in FIGS. 8 and 9 both employ the guide needle 1 and the needle 3 as described above.
When puncturing a blood vessel, the tubular member 12 and the housing 12 are punctured.
The seal inside is open.
【0008】したがって、上記の両従来装置では血液を
吸引させるための陰圧(負圧)を加えることが構造上か
ら原理的に不可能で、血圧の高い動脈だけに使用が限ら
れることになる。このため、前記のように透明なハブ6
内と環状の空間29への動脈の血圧による受動的な血液
の流入現象を視認して、誘導針1と針30の血管への穿
刺を判断するようになっている。この結果、これらの従
来装置を内頸・鎖骨下静脈等のように血圧の低い血管へ
の穿刺に用いた場合は、血管への穿刺の判断がおくれて
カニューラの留置に不都合が生じる。特に、病状が急変
して心機能が不全状態で血圧が低下しているような患者
に対して、応急的な輸液等の実施に対応できなくなると
いう致命的な問題点があった。Therefore, it is theoretically impossible to apply a negative pressure (negative pressure) for sucking blood in the above two conventional devices from the structural point of view, and the use is limited only to arteries with high blood pressure. . For this reason, the transparent hub 6 as described above is used.
The puncture of the guide needle 1 and the needle 30 into the blood vessel is determined by visually recognizing the phenomenon of passive blood inflow due to arterial blood pressure into the inner and annular spaces 29. As a result, when these conventional devices are used for puncturing a blood vessel having a low blood pressure, such as an internal jugular or subclavian vein, the puncturing of the blood vessel is determined, which causes inconvenience in placing the cannula. In particular, there has been a fatal problem that it is not possible to cope with an emergency infusion or the like for a patient whose medical condition has suddenly changed and the heart function is in a dysfunctional state and the blood pressure has dropped.
【0009】本発明はこのような従来装置の問題点を解
消するために為されたもので、内套針に陰圧を加えると
いう能動的な操作で血管への穿刺を迅速且つ正確に判断
することで、深部静脈への穿刺に適用することのできる
操作性の良いカニューラの導入方法および導入具を実現
することを目的とするものである。SUMMARY OF THE INVENTION The present invention has been made to solve such a problem of the conventional apparatus, and a puncture into a blood vessel can be quickly and accurately determined by an active operation of applying a negative pressure to an inner trocar. Accordingly, it is an object of the present invention to realize a method and an implement for introducing a cannula with good operability that can be applied to puncture into a deep vein.
【0010】[0010]
【課題を解決するための手段】本発明は、先端に内套針
を被着した外套針を取り付けるハブを設け、内套針に連
通するメインチューブの基端にシリンジが嵌合される雌
ルアーを形成すると共に、途中にワイヤスライド機構の
ガイドワイヤを挿通してスライド筒に嵌合したガイド筒
の分岐部を設けて、内部を密封状態に保持した中空状の
ハウジングを備え、シリンジにより血管に穿刺する内套
針に陰圧を加えて、内套針から吸入された血流により血
管への穿刺を判断するカニューラの導入方法を採用した
ものである。また、上記手段1において、スライド筒の
摺動動作に伴うワイヤスライド機構の内部空隙を一定容
積に保持するようにしたカニューラの導入方法を採用し
たものである。SUMMARY OF THE INVENTION The present invention provides a female luer in which a hub for attaching an outer trocar having an inner trocar is provided at a distal end thereof, and a syringe is fitted to a proximal end of a main tube communicating with the inner trocar. And a branch part of the guide cylinder fitted into the slide cylinder by inserting the guide wire of the wire slide mechanism in the middle, and having a hollow housing holding the inside in a sealed state, and applying a syringe to the blood vessel. In this method, a negative pressure is applied to an inner trocar to be punctured, and a method of introducing a cannula for judging puncture to a blood vessel by a blood flow inhaled from the inner trocar is adopted. Further, in the above-mentioned means 1, a method of introducing a cannula is employed in which the internal space of the wire slide mechanism accompanying the sliding operation of the slide cylinder is maintained at a constant volume.
【0011】また、本発明は、先端に内套針を被着した
外套針を取り付けるハブを設け、内套針に連通するメイ
ンチューブの基端にシリンジが嵌合される雌ルアーを形
成すると共に、途中にワイヤスライド機構のガイドワイ
ヤを挿通してスライドチューブに嵌合したガイドチュー
ブの分岐部を設けて、内部を密封状態に保持した中空状
のハウジングを備えたカニューラの導入具を構成したも
のである。また、上記手段3において、ガイドチューブ
に摺動可能に嵌装され両側に封鎖用のチップを設けてガ
イドワイヤの後端を固定し、途中をガイドチューブの誘
導溝から内腔に誘導するスライドチューブとを備えたワ
イヤスライド機構を設けたカニューラの導入具を構成し
たものである。また、上記手段3において、ガイドチュ
ーブを可撓スリーブで形成したカニューラの導入具を構
成したものである。さらに、上記手段3乃至5のいずれ
かにおいて、内套針の針先付近に側孔を穿設し、側孔を
外套針の被着面に形成された流路を介してメインチュー
ブに連通させたカニューラの導入具を構成したものであ
る。The present invention also provides a hub for attaching an outer trocar having an inner trocar to the distal end thereof, and a female luer in which a syringe is fitted to a proximal end of a main tube communicating with the inner trocar. The guide wire of the wire slide mechanism is inserted in the middle of the guide tube and a branch portion of the guide tube fitted to the slide tube is provided to constitute a cannula introducer having a hollow housing having an internally sealed state. It is. Further, in the above means 3, a slide tube which is slidably fitted to the guide tube, is provided with a sealing tip on both sides to fix the rear end of the guide wire, and guides the way from the guide groove of the guide tube to the lumen. And a cannula introduction tool provided with a wire slide mechanism having the following. Further, in the above-mentioned means 3, the guide tube constitutes a cannula introduction tool formed of a flexible sleeve. Further, in any one of the above means 3 to 5, a side hole is formed near the needle tip of the inner trocar, and the side hole communicates with the main tube through a flow path formed on the surface to which the outer trocar is attached. It constitutes a cannula introducer.
【0012】カニューラの導入具の穿刺前の初期状態で
は、スライドチューブが摺動範囲内の後退位置にある。
患者の外皮上の予め指定された位置に、内套針の穿刺が
始められる。穿刺が始められて針先が皮膚を通過したと
きに、シリンジのプランジャーを引きながら陰圧を加え
る。陰圧が加えられた針先が血管に差し込まれると、血
管内の血液が陰圧により内套針の内部に素早く引き込ま
れる。この結果、引き込まれた血液は内套針の側孔から
透明なハウジングのメインチューブの内腔を経由して、
プランジャーの内部に急速に流れ込むことになる。陰圧
を加えた能動的な血液の吸入動作による外からの血流の
透視により、内套針の血管への穿刺が速やかに確認され
る。In an initial state before the cannula introduction tool is punctured, the slide tube is in a retracted position within the sliding range.
A puncture of the inner trocar is initiated at a pre-specified location on the patient's skin. Negative pressure is applied while pulling the plunger of the syringe when the needle tip has passed through the skin after puncturing has begun. When the needle tip to which the negative pressure is applied is inserted into the blood vessel, the blood in the blood vessel is quickly drawn into the inner trocar by the negative pressure. As a result, the drawn blood flows from the side hole of the inner trocar through the lumen of the main tube of the transparent housing,
It will quickly flow into the plunger. Penetration of the trocar into a blood vessel is promptly confirmed by seeing the blood flow from the outside by the active blood suction operation under negative pressure.
【0013】[0013]
【発明の実施の形態】実施の形態1.以下、本発明の実
施の形態1を、図面を用いて説明する。図1は本発明の
実施の形態1の構成説明図である。図2は図1の各部の
構成を示す断面図で、(a)はA部分の断面図、(b)
はZ1ーZ1断面図、(c)はB部分の断面図である。
図1と図2において、1はカニューラの導入具、2はハ
ウジングである。3はハウジング2のメインチューブ、
4はメインチューブ3の途中から分岐されたガイドチュ
ーブ、41はガイドチューブ4に設けられた誘導溝、4
2はストッパーである。ハウジング2には透明でやや硬
質な樹脂材、例えばポリエチレンやポリプロピレン等の
プラスチック材料で一体成型されている。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 Hereinafter, Embodiment 1 of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory diagram of the configuration of the first embodiment of the present invention. 2A and 2B are cross-sectional views showing the configuration of each part in FIG. 1, FIG.
Is a sectional view taken along the line Z1-Z1, and FIG.
1 and 2, reference numeral 1 denotes a cannula introduction tool, and reference numeral 2 denotes a housing. 3 is a main tube of the housing 2,
4 is a guide tube branched from the middle of the main tube 3, 41 is a guide groove provided in the guide tube 4, 4
2 is a stopper. The housing 2 is integrally formed of a transparent and slightly hard resin material, for example, a plastic material such as polyethylene or polypropylene.
【0014】5はメインチューブ3の先端に装着された
内套針、6は内套針5の固着点付近の雄ルアー、7はメ
インチューブ3の基部に形成された雌ルアーである。内
套針5には一般にステンレスのような中空の金属材が用
いられて、先端に鋭利な針先51が形成されている。ま
た、内套針5の他端はメインチューブ3の内腔内に露出
して、露出部に側孔52が穿設されている〔図2
(c)〕。8は樹脂からなる外套針(カニューラ)で厚
さが除々に薄く作られた先端81には縮径する方向の弱
い弾性力が与えられ、後端はやや硬質の雌ルアー82が
形成されている。そして、外套針8は後端のハブの雌ル
アー82を雄ルアー6に嵌合させて、先端を内套針5の
外周に密着させてハウジング2の先に着脱可能に装着さ
れている。Reference numeral 5 denotes an inner trowel attached to the distal end of the main tube 3, reference numeral 6 denotes a male luer near the fixing point of the inner trocar 5, and reference numeral 7 denotes a female luer formed at the base of the main tube 3. A hollow metal material such as stainless steel is generally used for the inner trocar 5, and a sharp needle tip 51 is formed at the tip. Further, the other end of the inner trocar 5 is exposed inside the lumen of the main tube 3, and a side hole 52 is formed in the exposed portion [FIG.
(C)]. Numeral 8 is a trocar (cannula) made of a resin, the tip 81 of which thickness is gradually reduced is given a weak elastic force in the direction of reducing the diameter, and a slightly hard female luer 82 is formed at the rear end. . The outer trocar 8 is detachably mounted on the tip of the housing 2 with the female luer 82 of the hub at the rear end fitted to the male luer 6, with the distal end being in close contact with the outer periphery of the inner trocar 5.
【0015】9はガイドチューブ4上に設けられたワイ
ヤスライド機構、10はガイドワイヤ(または、スタイ
レット)である。91はスライドチューブ、92,93
は内部を密封して輸液等のリーク防止用のチップであ
る。スライドチューブ91は両側のチップ92,93に
よりガイドチューブ4の外周に同心的に軸受けされて二
重管を構成し、両管の隙間で一定容積の円筒状の空隙R
を形成して摺動可能に嵌装されている。Lはスライドチ
ューブ91の摺動範囲、LaとLbは前進位置と後退位
置である。ガイドワイヤ10の一端は折り返されてスラ
イドチューブ91とチップ93との間の隙間に挟着さ
れ、途中が誘導溝41の位置でガイドチューブ4の外周
から内腔内に誘導される。そして、スライドチューブ9
1が図示のように範囲Lの右限の後退位置Lbにあると
きに、ガイドワイヤ10の先端が内套針5の側孔52の
近くに到達するような長さになっている。9 is a wire slide mechanism provided on the guide tube 4, and 10 is a guide wire (or stylet). 91 is a slide tube, 92 and 93
Is a chip for hermetically sealing the inside to prevent leakage of infusion and the like. The slide tube 91 is concentrically supported on the outer periphery of the guide tube 4 by the tips 92 and 93 on both sides to form a double tube, and a cylindrical space R having a certain volume is provided between the two tubes.
And is slidably fitted. L is a sliding range of the slide tube 91, and La and Lb are a forward position and a backward position. One end of the guide wire 10 is folded back and sandwiched in the gap between the slide tube 91 and the tip 93, and is guided from the outer periphery of the guide tube 4 into the lumen at the position of the guide groove 41. And slide tube 9
The length of the guide wire 10 is such that the distal end of the guide wire 10 reaches near the side hole 52 of the inner trocar 5 when 1 is at the rightmost retreat position Lb of the range L as shown in the figure.
【0016】11はシリンジ、12はシリンジ11の雄
ルアー、13はプランジャー、14はノブである。シリ
ンジ11は雄ルアー12を雌ルアー7に差し込んで、ハ
ウジング2に連結される。シリンジ11とハウジング2
との連結状態で、カニューラの導入具1の内部は密封状
態に保持されるようになっている。上述のような実施の
形態1の動作を図3を用いて、次に説明する。なお、図
3の符号15は人体の外皮、16は血管である。15a
と15bは外皮15の上皮と皮下組織、16aと16b
は血管16の外壁と内壁である。Reference numeral 11 denotes a syringe, 12 denotes a male luer of the syringe 11, 13 denotes a plunger, and 14 denotes a knob. The syringe 11 is connected to the housing 2 by inserting the male luer 12 into the female luer 7. Syringe 11 and housing 2
In this connection state, the inside of the cannula introduction tool 1 is kept in a sealed state. The operation of the first embodiment as described above will be described next with reference to FIG. Note that reference numeral 15 in FIG. 3 denotes an outer skin of a human body, and 16 denotes a blood vessel. 15a
And 15b are epithelium and subcutaneous tissue of outer skin 15, 16a and 16b
Are the outer and inner walls of the blood vessel 16.
【0017】カニューラの導入具1の穿刺前の初期状態
にあっては、図3(a)のようにスライドチューブ91
が摺動範囲L内の後退位置Lbにある。ここで、患者の
外皮15の血管が走行が予想される位置に、内套針5を
穿刺する。穿刺を進めて針先51が上皮15aと皮下組
織15bを経て外皮15を貫通したら、中抜き矢印のよ
うにシリンジ11のノブ14を介してプランジャー13
を引き込みながら陰圧を加える。陰圧が加えられた針先
51が外壁16aから内壁16bに抜けて血管16内に
差し込まれると、内腔の血液が陰圧により内套針5の内
部に引き込まれる。この結果、引き込まれた血液は内套
針5の側孔52から透明なハウジング2のメインチュー
ブ3の内腔を経由して、プランジャー13の内部に急速
に流れ込むことになる。In the initial state before the cannula introduction tool 1 is punctured, as shown in FIG.
At the retreat position Lb within the sliding range L. Here, the inner trocar 5 is punctured at a position where the blood vessel of the outer skin 15 of the patient is expected to run. When the puncture is advanced and the needle tip 51 penetrates the outer skin 15 through the epithelium 15a and the subcutaneous tissue 15b, the plunger 13 is inserted through the knob 14 of the syringe 11 as shown by a hollow arrow.
Apply negative pressure while pulling. When the needle tip 51 to which the negative pressure is applied falls out from the outer wall 16a to the inner wall 16b and is inserted into the blood vessel 16, the blood in the lumen is drawn into the inner trocar 5 by the negative pressure. As a result, the drawn blood rapidly flows into the plunger 13 from the side hole 52 of the inner trocar 5 through the lumen of the main tube 3 of the transparent housing 2.
【0018】陰圧を加えた能動的な血液の吸入動作によ
る血流の透視により、内套針5の血管16への穿刺が確
認される。このときの血液の針先51からの流入状態
が、図(b)のゴシックの矢印で示されている。内套針
5の針先51が血管内の所定深さに達したときに、ワイ
ヤスライド機構9によるガイドワイヤ10の繰り出し操
作が開始される。ガイドワイヤ10の繰り出しは、スラ
イドチューブ91をガイドチューブ4に沿って摺動して
行われる。押し出されたスライドチューブ91が前進位
置Laに到達すると、内套針5内を進んだガイドワイヤ
10の先端が針先51から血管16内に露出する。ガイ
ドワイヤ10の繰り出し開始前と繰り出し後の状態が、
図3の(b)と(c)に示されている。The puncture of the inner trocar 5 into the blood vessel 16 is confirmed by the see-through of the blood flow by the active suction of blood under negative pressure. The inflow state of blood from the needle tip 51 at this time is indicated by a gothic arrow in FIG. When the needle tip 51 of the inner trocar 5 reaches a predetermined depth in the blood vessel, the operation of feeding out the guide wire 10 by the wire slide mechanism 9 is started. The feeding of the guide wire 10 is performed by sliding the slide tube 91 along the guide tube 4. When the extruded slide tube 91 reaches the advance position La, the distal end of the guide wire 10 that has advanced through the inner trocar 5 is exposed from the needle tip 51 into the blood vessel 16. The state before starting the feeding of the guide wire 10 and the state after the feeding are as follows.
These are shown in FIGS. 3B and 3C.
【0019】(b),(c)の両図に示すように、La
〜Lbの移動にも拘わらず空隙R内の容積には変化がな
い。このようにワイヤスライド機構9内の空間容積に無
関係にガイドワイヤ10が繰り出されるので、血管内へ
の気泡の混入が防止されることになる。こうしてガイド
ワイヤ10の先端が血管内の所定の深さに達すると、外
套針8がガイドワイヤ10にガイドされて血管16内に
導入されることになる〔図(d)〕。導入後、スライド
チューブ91を後退させてガイドワイヤ10を引き戻し
てから、内套針5を付けたハウジング2がシリンジ11
と共に外套針8から分離される。同時に、血管16に留
置された外套針8には、適当な漏血の防止処理が為され
る。その後、血管16内に留置された外套針8を利用し
て、輸液や採血等の医療処置が実施されることになる。As shown in FIGS. 2B and 2C, La
There is no change in the volume in the gap R despite the movement of ~ Lb. As described above, since the guide wire 10 is fed out irrespective of the volume of space in the wire slide mechanism 9, air bubbles are prevented from entering the blood vessel. When the distal end of the guide wire 10 reaches a predetermined depth in the blood vessel in this way, the trocar 8 is guided by the guide wire 10 and is introduced into the blood vessel 16 [FIG. After the introduction, the slide tube 91 is retracted and the guide wire 10 is pulled back, and then the housing 2 with the inner trocar 5 is attached to the syringe 11.
Together with the trocar 8. At the same time, the trocar 8 indwelled in the blood vessel 16 is subjected to appropriate blood leakage prevention processing. Thereafter, using the trocar 8 indwelled in the blood vessel 16, medical treatment such as infusion or blood collection is performed.
【0020】以上のように本発明は、先端に内套針5に
被着された外套針8のハブを取り付ける雄ルアー6を設
け、基端にシリンジ11が嵌合される雌ルアー7を形成
すると共に、途中にガイドワイヤ10を挿通したワイヤ
スライド機構9のガイドチューブ4を分岐させて、内部
を密封状態に保持する中空状のハウジング2を備えたカ
ニューラの導入方法を構成した。そして、シリンジ11
により内套針5に陰圧を加えて血液を吸引し、吸引され
た血液の流れを見て内套針5の血管への穿刺を判断する
ようにしたものである。この結果、本発明によれば、血
管16に陰圧を与えるという能動的な操作で、内套針5
の血管16への穿刺状態を迅速且つ確実に判断すること
ができる。As described above, according to the present invention, the male luer 6 for attaching the hub of the outer trocar 8 attached to the inner trocar 5 is provided at the distal end, and the female luer 7 into which the syringe 11 is fitted is formed at the proximal end. At the same time, the guide tube 4 of the wire slide mechanism 9 into which the guide wire 10 has been inserted is branched, and a cannula introduction method including the hollow housing 2 for keeping the inside hermetically sealed is configured. And the syringe 11
Thus, a negative pressure is applied to the inner trocar 5 to suck blood, and the flow of the sucked blood is determined to determine whether the inner trocar 5 punctures a blood vessel. As a result, according to the present invention, the active operation of applying a negative pressure to the blood vessel 16 enables the inner trocar 5 to be operated.
Puncturing state of the blood vessel 16 can be determined quickly and reliably.
【0021】一方、上記の実施の形態1と同様に陰圧操
作を可能とするために、前述した図8,9(特に図9)
の構造を応用して図10のような導入具1を構成するこ
とが考えられる。ワイヤスライド機構9にプランジャ9
0を設けて、このプランジャ90にガイドワイヤ10の
後端を固定する。シリンジ11で陰圧を与えるために
は、ワイヤスライド機構9を密封構造に構成することが
不可欠になる。しかし、図10に示された装置を用いて
血管確保を行い、次にガイドワイヤ10を送り込むため
にプランジャ90を前進させると、ワイヤスライド機構
9の内部空間が縮小してシリンジ11の内部の空気が血
管16内に押し出されてしまうという問題がある。On the other hand, in order to enable negative pressure operation in the same manner as in the first embodiment, FIGS.
It is conceivable to configure the introduction tool 1 as shown in FIG. Plunger 9 for wire slide mechanism 9
0 is provided to fix the rear end of the guide wire 10 to the plunger 90. In order to apply a negative pressure with the syringe 11, it is essential to configure the wire slide mechanism 9 in a sealed structure. However, when a blood vessel is secured using the device shown in FIG. 10 and then the plunger 90 is advanced to feed the guide wire 10, the internal space of the wire slide mechanism 9 is reduced, and the air inside the syringe 11 is reduced. Is pushed out into the blood vessel 16.
【0022】これに対して、実施の形態1では前述のよ
うに常時一定容積を保持する環状の空隙Rを形成したワ
イヤスライド機構9を利用して、ガイドワイヤ10の繰
り出しと引き戻しを行うように構成した。この結果、図
10に示されたような装置に生じる空気の押し出し現象
がなくなり、血液内へ空気が押し出されるという致命的
な欠陥を解消した。On the other hand, in the first embodiment, as described above, the guide wire 10 is extended and retracted by using the wire slide mechanism 9 having the annular gap R which always maintains a constant volume. Configured. As a result, the phenomenon of pushing air out of the apparatus as shown in FIG. 10 is eliminated, and the fatal defect that air is pushed out into blood is eliminated.
【0023】実施の形態2.図4は本発明の実施の形態
2の構成を示す断面図、図5は図4の構成を示す拡大断
面図で、(a)はZ1ーZ1拡大断面図、(b)はZ2
−Z2拡大断面図、図6は実施の形態2の動作を示す断
面図である。図4と図5において、21はハウジング2
の一部に設けられた複数の凸条、53は内套針5に穿設
され前記の側孔52と同様な側孔である。凸条21は図
5(a)の拡大断面図に示すように、中空部の内面に軸
方向に沿って形成されている。また、側孔53は上述の
側孔52と同様に内套針5に設けられているが、この実
施の形態2では針先51の近くに形成され、ガイドワイ
ヤ10も実施の形態1より長く構成されている。Embodiment 2 FIG. 4 is a cross-sectional view showing the configuration of the second embodiment of the present invention, FIG. 5 is an enlarged cross-sectional view showing the configuration of FIG. 4, (a) is an enlarged cross-sectional view of Z1-Z1, (b) is Z2.
FIG. 6 is an enlarged sectional view showing the operation of the second embodiment. 4 and 5, reference numeral 21 denotes the housing 2
Are provided on a part of the inner trocar 5 and are side holes similar to the side holes 52 described above. As shown in the enlarged sectional view of FIG. 5A, the ridge 21 is formed on the inner surface of the hollow portion along the axial direction. Further, the side hole 53 is provided in the inner trocar 5 similarly to the above-described side hole 52, but is formed near the needle point 51 in the second embodiment, and the guide wire 10 is also longer than in the first embodiment. It is configured.
【0024】そして、図5に示したように実施の形態2
でワイヤスライド機構9が後退位置Lbにある初期状態
おいては、ガイドワイヤ10の先端が針先51の近くに
移された側孔53の付近まで延長されている。このほ
か、図5(b)の拡大断面図に示されているように、側
孔53の付近から後方に向かって内套針5の外周と外套
針8の内周の間に軸方向に沿う円筒状の流路17が形成
されている。この流路17に側孔53から血液等が流れ
込んで、メインチューブ3の内腔を経てシリンジ11に
吸引されるようになっている。Then, as shown in FIG.
In the initial state where the wire slide mechanism 9 is at the retreat position Lb, the tip of the guide wire 10 is extended to the vicinity of the side hole 53 moved near the needle point 51. In addition, as shown in the enlarged cross-sectional view of FIG. 5B, from the vicinity of the side hole 53 to the rear, the body extends along the axial direction between the outer circumference of the inner trocar 5 and the inner circumference of the outer trocar 8. A cylindrical channel 17 is formed. Blood or the like flows into the flow channel 17 from the side hole 53 and is sucked into the syringe 11 through the lumen of the main tube 3.
【0025】実施の形態2における内套針5の血管16
への穿刺動作も、実施の形態1のときと変わることなく
行われる。陰圧を掛けられた内套針5が血管16に穿刺
されると、血液が針先51から吸引される。吸引された
血液は針先51の側の側孔53から流路17に流れ込
み、メインチューブ3の内腔に吸い込まれることになる
(図5のゴシック矢印)。内套針5の血管16への穿刺
が、針先51に近い側孔53から流路17に流れ込んだ
血液を見て速断される。その後、スライドチューブ91
を前進位置Laに進めてガイドワイヤ10が繰り出され
たときの状態が、図6に示されている。実施の形態2よ
れば、穿刺の判断時間が側孔53のズレ分だけ短縮され
る。また、穿刺後のガイドワイヤ10の繰り出し長さ、
即ちスライドチューブ91の摺動範囲Lも小さくなり小
型化に寄与する。The blood vessel 16 of the inner trocar 5 in the second embodiment
The puncturing operation is performed as in the first embodiment. When the negative pressure is applied to the inner trocar 5 and the blood vessel 16 is punctured, blood is sucked from the needle tip 51. The sucked blood flows into the channel 17 from the side hole 53 on the needle tip 51 side, and is sucked into the inner cavity of the main tube 3 (gothic arrow in FIG. 5). The puncture of the inner trocar 5 into the blood vessel 16 is interrupted by seeing the blood flowing into the flow channel 17 from the side hole 53 near the needle tip 51. Then, slide tube 91
Is shown in FIG. 6 when the guide wire 10 is extended by moving the guide wire 10 to the forward position La. According to the second embodiment, the puncture determination time is shortened by the amount of displacement of side hole 53. Further, the feeding length of the guide wire 10 after puncturing,
That is, the sliding range L of the slide tube 91 is also reduced, which contributes to downsizing.
【0026】実施の形態3.実施の形態3の構成が、図
7に示されている。実施の形態3では実施の形態1,2
におけるガイドチューブ4に代えて、図に示すような短
い中空状の分岐部18が形成されている。そして、分岐
部18にガイドワイヤ10を包囲して内部を密封して吸
気により厚さが収縮可能な可撓スリーブ19が取り付け
られ、ガイドワイヤ10の後端が可撓スリーブ19の先
端まで延長されている。可撓スリーブ19には、例え
ば、PVC(塩化ビニール)やPP(ポリプロピレン)
等のような非通気性の細いチューブが適する。即ち、可
撓スリーブ19により、密封構造のワイヤスライド機構
9が構成されている。その他の構成は、実施の形態1,
2と共通している。Embodiment 3 FIG. FIG. 7 shows the configuration of the third embodiment. In the third embodiment, the first and second embodiments are used.
Instead of the guide tube 4, a short hollow branch portion 18 as shown in the figure is formed. A flexible sleeve 19 that surrounds the guide wire 10, seals the inside of the branch wire 18, and contracts in thickness by suction is attached to the branch portion 18, and the rear end of the guide wire 10 is extended to the front end of the flexible sleeve 19. ing. The flexible sleeve 19 is made of, for example, PVC (vinyl chloride) or PP (polypropylene).
A non-breathable thin tube such as is suitable. That is, the flexible sleeve 19 forms the wire slide mechanism 9 having a sealed structure. Other configurations are described in Embodiment 1,
Common to 2.
【0027】このような構成の実施の形態3において、
シリンジ11で陰圧を加えると前述と全く同様に血管1
6内の血液が吸い込まれ内套針5の穿刺が速やかに判断
される。このとき、陰圧により可撓スリーブ19内の空
気層も吸引されて、内部が負圧になって可撓スリーブ1
9が薄い板状に収縮することになる。薄板状に収縮した
可撓スリーブ19の外からガイドワイヤ10の後端に矢
印方向に向く力を加えて、ガイドワイヤ10の先端を血
管16内の所定の位置までマニュアル操作で繰り出すこ
とができる。ビニール等の非通気性チューブを用いた実
施の形態3によれば、簡単な構成で簡易型の汎用性を持
つカニューラの導入具を提供できる。In the third embodiment having such a configuration,
When a negative pressure is applied by the syringe 11, the blood vessel 1
Blood in 6 is sucked, and puncture of inner trocar 5 is immediately determined. At this time, the air layer in the flexible sleeve 19 is also sucked by the negative pressure, and the inside becomes negative pressure, so
9 shrinks into a thin plate shape. By applying a force in the direction of the arrow to the rear end of the guidewire 10 from outside the flexible sleeve 19 contracted into a thin plate shape, the distal end of the guidewire 10 can be manually fed out to a predetermined position in the blood vessel 16. According to the third embodiment using a non-breathable tube such as vinyl, it is possible to provide a simple and versatile cannula introducer with a simple configuration.
【0028】なお、上述の本発明の全部の実施の形態で
シリンジ等が全て同じ大きさで形状も同一な場合を図示
して説明したが、太さや長さ等を数種類に分けて規格化
された導入具を構成してもよい。また、メインチューブ
とガイドチューブを平行に配置してもよい。さらに、ガ
イドチューブとスライドチューブとを角筒状に並べて軸
方向にスライドさせるワイヤスライド機構を構成しても
よく、要するにワイヤスライド機構のスライド部材の内
部空間の容積が一定に保持される構成であれば必ずしも
実施の形態の構造に限定するものではない。In the above-described embodiments of the present invention, the case where all the syringes and the like have the same size and the same shape is illustrated and described. However, the thickness and the length are standardized by dividing them into several types. May be configured. Further, the main tube and the guide tube may be arranged in parallel. Further, a wire slide mechanism that slides the guide tube and the slide tube in the shape of a square tube and slides in the axial direction may be configured. In other words, the wire slide mechanism may be configured such that the volume of the internal space of the slide member of the wire slide mechanism is kept constant. The invention is not necessarily limited to the structure of the embodiment.
【0029】[0029]
【発明の効果】本発明は、先端に内套針を被着した外套
針を取り付けるハブを設け、内套針に連通するメインチ
ューブの基端にシリンジが嵌合される雌ルアーを形成す
ると共に、途中にワイヤスライド機構のガイドワイヤを
挿通してスライド筒に嵌合したガイド筒の分岐部を設け
て、内部を密封状態に保持した中空状のハウジングを備
え、シリンジにより血管に穿刺する内套針に陰圧を加え
て、内套針から吸入された血流により血管への穿刺を判
断するカニューラの導入方法を採用した。また、上記手
段1において、スライド筒の摺動動作に伴うワイヤスラ
イド機構の内部空隙を一定容積に保持するようにしたカ
ニューラの導入方法を採用した。According to the present invention, there is provided a hub for attaching an outer trocar having an inner trocar to the distal end thereof, and a female luer into which a syringe is fitted at a base end of a main tube communicating with the inner trocar. An inner sheath for inserting a guide wire of a wire slide mechanism in the middle thereof, providing a branch portion of the guide cylinder fitted into the slide cylinder, and holding a hollow housing in which the inside is sealed, and puncturing a blood vessel with a syringe. A negative pressure was applied to the needle, and a method of introducing a cannula for judging puncture into a blood vessel based on blood flow inhaled from the inner trocar was adopted. Further, in the above-mentioned means 1, a method of introducing a cannula is employed in which the internal space of the wire slide mechanism accompanying the sliding operation of the slide cylinder is maintained at a constant volume.
【0030】また、本発明は、先端に内套針を被着した
外套針を取り付けるハブを設け、内套針に連通するメイ
ンチューブの基端にシリンジが嵌合される雌ルアーを形
成すると共に、途中にワイヤスライド機構のガイドワイ
ヤを挿通してスライドチューブに嵌合したガイドチュー
ブの分岐部を設けて、内部を密封状態に保持した中空状
のハウジングを備えたカニューラの導入具を構成した。
また、上記手段3において、ガイドチューブに摺動可能
に嵌装され両側に封鎖用のチップを設けてガイドワイヤ
の後端を固定し、途中をガイドチューブの誘導溝から内
腔に誘導するスライドチューブとを備えたワイヤスライ
ド機構を設けたカニューラの導入具を構成した。また、
上記手段3において、ガイドチューブを可撓スリーブで
形成したカニューラの導入具を構成した。さらに、上記
手段3乃至5のいずれかにおいて、内套針の針先付近に
側孔を穿設し、側孔を外套針の被着面に形成された流路
を介してメインチューブに連通させたカニューラの導入
具を構成した。The present invention also provides a hub for attaching an outer trocar having an inner trocar attached to the distal end thereof, and forming a female luer into which a syringe is fitted at the base end of a main tube communicating with the inner trocar. A guide portion of the guide tube of the wire slide mechanism was inserted in the middle of the guide tube, and a branch portion of the guide tube fitted to the slide tube was provided. Thus, a cannula introduction tool having a hollow housing in which the inside was sealed was constructed.
Further, in the above means 3, a slide tube which is slidably fitted to the guide tube, is provided with a sealing tip on both sides to fix the rear end of the guide wire, and guides the way from the guide groove of the guide tube to the lumen. And a cannula introduction tool provided with a wire slide mechanism having the following. Also,
In the above-mentioned means 3, a cannula introducing tool in which the guide tube is formed of a flexible sleeve is configured. Further, in any one of the above means 3 to 5, a side hole is formed near the needle tip of the inner trocar, and the side hole communicates with the main tube through a flow path formed on the surface to which the outer trocar is attached. A cannula introducer was constructed.
【0031】この結果、開放型の従来装置と異なり、カ
ニューラの導入時に血管内の血液を吸引させるための陰
圧(負圧)を加えることができる。このため、透明なハ
ウジング等からの透視により動脈から能動的に吸引され
た血液の流入現象を見て、内套針の血管への穿刺を速断
することができる。この結果、内頸・鎖骨下静脈等のよ
うに細く血圧の低い血管への穿刺の判断が迅速且つ確実
になり、カテーテルの留置手技を向上することが可能に
なる。特に、心機能不全で血圧が低下しているような救
急患者に対して、応急的な輸液等の実施に即応できると
いう優れた効果が得られることになる。As a result, unlike the open type conventional apparatus, a negative pressure (negative pressure) for sucking blood in the blood vessel can be applied when the cannula is introduced. Therefore, the puncture of the inner trocar into the blood vessel can be quickly stopped by observing the inflow phenomenon of blood actively sucked from the artery by seeing through the transparent housing or the like. As a result, it is possible to quickly and reliably determine whether or not to puncture a blood vessel that is thin and has a low blood pressure, such as the internal jugular / subclavian vein, and to improve the indwelling procedure of the catheter. In particular, it is possible to obtain an excellent effect that an emergency patient whose heart pressure is dysfunction and blood pressure is lowered can immediately respond to the execution of emergency infusion and the like.
【0032】このように本発明によれば、内套針に陰圧
を加えるという能動的な操作で血管への穿刺を迅速且つ
正確に判断することのできる操作性の良いカニューラの
導入方法および導入具を実現することができる。As described above, according to the present invention, a method and method for introducing a cannula with good operability, which can quickly and accurately determine puncture into a blood vessel by an active operation of applying a negative pressure to the inner trocar. Tool can be realized.
【図1】本発明の実施の形態1の構成を示す説明図であ
る。FIG. 1 is an explanatory diagram illustrating a configuration of a first embodiment of the present invention.
【図2】図1の各部の構成を示す拡大断面図である。FIG. 2 is an enlarged sectional view showing a configuration of each part in FIG.
【図3】実施の形態1の動作を示す説明図である。FIG. 3 is an explanatory diagram showing an operation of the first embodiment.
【図4】本発明の実施の形態2の構成を示す説明図であ
る。FIG. 4 is an explanatory diagram showing a configuration of a second embodiment of the present invention.
【図5】図4の構成を示す拡大断面図である。FIG. 5 is an enlarged sectional view showing the configuration of FIG.
【図6】実施の形態2の動作を示す説明図である。FIG. 6 is an explanatory diagram showing the operation of the second embodiment.
【図7】本発明の実施の形態3の構成を示す説明図であ
る。FIG. 7 is an explanatory diagram illustrating a configuration of a third embodiment of the present invention.
【図8】従来のカニューラの導入具の構成を示す断面図
である。FIG. 8 is a cross-sectional view showing a configuration of a conventional cannula introduction tool.
【図9】従来の別のカニューラの導入具の構成を示す断
面図である。FIG. 9 is a cross-sectional view showing the configuration of another conventional cannula introducer.
【図10】実施の形態1を説明するための比較図であ
る。FIG. 10 is a comparative diagram for explaining the first embodiment.
1 導入具 2 ハウジング 3 メインチューブ 4 ガイドチューブ(ガイド筒) 5 内套針 6 ハブ 8 外套針(カニューラ) 9 ワイヤスライド機構 10 ガイドワイヤ 11 シリンジ 12 雄ルアー 13 プランジャー 17 流路 18 分岐部 19 可撓スリーブ 21 凸条 41 誘導溝 51 針先 52 側孔 53 側孔 91 スライドチューブ(スライド筒) R 円筒状空隙 DESCRIPTION OF SYMBOLS 1 Introduction tool 2 Housing 3 Main tube 4 Guide tube (guide cylinder) 5 Inner needle 6 Hub 8 Outer needle (cannula) 9 Wire slide mechanism 10 Guide wire 11 Syringe 12 Male luer 13 Plunger 17 Flow path 18 Branch part 19 Possible Flexible sleeve 21 Convex stripe 41 Guide groove 51 Needle tip 52 Side hole 53 Side hole 91 Slide tube (slide tube) R Cylindrical gap
Claims (6)
取り付ける雄ルアーを設け、前記内套針に連通するメイ
ンチューブの基端にシリンジが嵌合される雌ルアーを形
成すると共に、途中にワイヤスライド機構のガイドワイ
ヤを挿通してスライド筒に嵌合したガイド筒の分岐部を
設けて、内部を密封状態に保持した中空状のハウジング
を備え、 前記シリンジにより血管に穿刺する内套針に陰圧を加え
て、該内套針から吸入された血流により血管への穿刺を
判断することを特徴とするカニューラの導入方法。1. A male luer for attaching a hub of an outer trocar having an inner trocar attached to a distal end thereof, and a female luer in which a syringe is fitted to a base end of a main tube communicating with the inner trocar is formed. A guide housing of a wire slide mechanism is inserted in the middle thereof, a branch portion of the guide tube fitted into the slide tube is provided, and a hollow housing holding the inside in a sealed state is provided. A method for introducing a cannula, wherein a negative pressure is applied to a trocar, and puncture into a blood vessel is determined based on blood flow inhaled from the inner trocar.
スライド機構の内部空隙を一定容積に保持するようにし
たことを特徴とする請求項1記載のカニューラの導入方
法。2. The cannula introduction method according to claim 1, wherein the internal space of the wire slide mechanism accompanying the sliding operation of the slide cylinder is maintained at a constant volume.
取り付ける雄ルアーを設け、前記内套針に連通するメイ
ンチューブの基端にシリンジが嵌合される雌ルアーを形
成すると共に、途中にワイヤスライド機構のガイドワイ
ヤを挿通してスライドチューブに嵌合したガイドチュー
ブの分岐部を設けて、内部を密封状態に保持した中空状
のハウジングを備えたことを特徴とするカニューラの導
入具。3. A male luer to which a hub of an outer trocar having an inner trocar is attached at a distal end is provided, and a female luer to which a syringe is fitted is formed at a proximal end of a main tube communicating with the inner trocar. A guide housing of a guide tube of a wire slide mechanism inserted in the middle thereof, and a branch portion of the guide tube fitted to the slide tube is provided, and a hollow housing is provided, the inside of which is held in a sealed state. Utensils.
れ両側に封鎖用のチップを設けて前記ガイドワイヤの後
端を固定し、途中を前記ガイドチューブの誘導溝から内
腔に誘導するスライドチューブとを備えたワイヤスライ
ド機構を設けたことを特徴とする請求項3記載のカニュ
ーラの導入具。4. A slide that is slidably fitted to the guide tube, provided with a sealing tip on both sides to fix a rear end of the guide wire, and guides the way through a guide groove of the guide tube to an inner cavity. 4. The cannula introducer according to claim 3, further comprising a wire slide mechanism having a tube.
成したことを特徴とする請求項3記載のカニューラの導
入具。5. The cannula introducer according to claim 3, wherein said guide tube is formed of a flexible sleeve.
該側孔を前記外套針の被着面に形成された流路を介して
前記メインチューブに連通させたことを特徴とする請求
項3乃至5のいずれかに記載のカニューラの導入具。6. A side hole is formed near the tip of the inner trocar,
The cannula introduction tool according to any one of claims 3 to 5, wherein the side hole communicates with the main tube via a flow path formed on a surface to which the outer trocar is attached.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18609298A JP3912460B2 (en) | 1998-07-01 | 1998-07-01 | Cannula introduction tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18609298A JP3912460B2 (en) | 1998-07-01 | 1998-07-01 | Cannula introduction tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000014791A true JP2000014791A (en) | 2000-01-18 |
| JP3912460B2 JP3912460B2 (en) | 2007-05-09 |
Family
ID=16182235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18609298A Expired - Lifetime JP3912460B2 (en) | 1998-07-01 | 1998-07-01 | Cannula introduction tool |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3912460B2 (en) |
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|---|---|---|---|---|
| JP2009232916A (en) * | 2008-03-26 | 2009-10-15 | Terumo Corp | Catheter indwelling appliance |
| JP2018064785A (en) * | 2016-10-20 | 2018-04-26 | 株式会社八光 | Branch pipe |
| CN110368070A (en) * | 2018-04-12 | 2019-10-25 | 王增涛 | Blood pressure power guide core paracentesis trocar |
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| CN113694352A (en) * | 2020-05-21 | 2021-11-26 | 巴德阿克塞斯系统股份有限公司 | Rapidly insertable central catheter including catheter assembly and method thereof |
| JP2022506972A (en) * | 2018-11-09 | 2022-01-17 | ノースウォード・ベンチャーズ・エルエルシー | Catheter system and method for introducing an intravenous catheter into a patient |
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| US8585651B2 (en) | 2008-05-22 | 2013-11-19 | Terumo Kabushiki Kaisha | Catheter retaining tool |
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1998
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|---|---|---|---|---|
| JP2009232916A (en) * | 2008-03-26 | 2009-10-15 | Terumo Corp | Catheter indwelling appliance |
| JP2018064785A (en) * | 2016-10-20 | 2018-04-26 | 株式会社八光 | Branch pipe |
| US11801367B2 (en) | 2017-07-19 | 2023-10-31 | Becton, Dickinson And Company | Integrated peripheral intra-venous catheter with improved extension tube port probe access |
| CN110368070A (en) * | 2018-04-12 | 2019-10-25 | 王增涛 | Blood pressure power guide core paracentesis trocar |
| JP2022506972A (en) * | 2018-11-09 | 2022-01-17 | ノースウォード・ベンチャーズ・エルエルシー | Catheter system and method for introducing an intravenous catheter into a patient |
| CN113171511A (en) * | 2020-01-24 | 2021-07-27 | 贝克顿·迪金森公司 | Delivery device |
| US20210228842A1 (en) * | 2020-01-24 | 2021-07-29 | Becton, Dickinson And Company | Plunger-based delivery device to facilitate vascular access |
| JP2023514084A (en) * | 2020-01-24 | 2023-04-05 | ベクトン・ディキンソン・アンド・カンパニー | A plunger-type delivery device that introduces a guidewire into the catheter |
| WO2021150398A1 (en) * | 2020-01-24 | 2021-07-29 | Becton, Dickinson And Company | Plunger-based delivery device to introduce guidewire into catheter |
| US11931531B2 (en) | 2020-01-24 | 2024-03-19 | Becton, Dickinson And Company | Plunger-based delivery device to facilitate vascular access |
| JP7689133B2 (en) | 2020-01-24 | 2025-06-05 | ベクトン・ディキンソン・アンド・カンパニー | Plunger-type delivery device for introducing a guidewire into a catheter |
| CN113694352A (en) * | 2020-05-21 | 2021-11-26 | 巴德阿克塞斯系统股份有限公司 | Rapidly insertable central catheter including catheter assembly and method thereof |
| CN119837605A (en) * | 2025-01-23 | 2025-04-18 | 首都医科大学附属北京朝阳医院 | Puncture device |
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| JP3912460B2 (en) | 2007-05-09 |
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