JP2008200161A - Medical solution infusion implement and medical solution infusion device - Google Patents

Medical solution infusion implement and medical solution infusion device Download PDF

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JP2008200161A
JP2008200161A JP2007037394A JP2007037394A JP2008200161A JP 2008200161 A JP2008200161 A JP 2008200161A JP 2007037394 A JP2007037394 A JP 2007037394A JP 2007037394 A JP2007037394 A JP 2007037394A JP 2008200161 A JP2008200161 A JP 2008200161A
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needle
chemical
inner needle
concave
conical
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JP4956219B2 (en
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Shigeru Nemoto
茂 根本
Isao Kimura
伊佐雄 木村
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Nemoto Kyorindo Co Ltd
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Nemoto Kyorindo Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a medical solution infusion implement having such a structure as capable of preventing a medical solution forced into the implement with high pressure from leaking out without any special operation. <P>SOLUTION: An outer needle 310, into which an inner needle 320 is inserted, is stuck into a blood vessel, and after that, the inner needle 320 is drawn out of the outer needle 310. At the time, when the inner needle 320 is drawn out of a through hole of a recessed face member 360, a sealing member 370 closely adheres to the cone-shaped recessed surface of the recessed face member 360. Accordingly, the medical solution will not leak out of the through hole of the recessed face member 360 even if the medical solution is force into the implement with high pressure. Furthermore, when the inner needle 320 is drawn out of the recessed face member 360, the sealing member 370 automatically adheres closely to the cone-shaped recessed face, and therefore, the through hole of the recessed face member 360 can be automatically sealed without requiring exclusive operation, etc. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、被験者の血管に薬液を注入するための薬液注入用具と、この薬液注入用具を利用して被験者の血管に薬液を圧入する薬液注入装置と、に関する。   The present invention relates to a chemical solution injection tool for injecting a chemical solution into a blood vessel of a subject, and a chemical solution injection device that presses the chemical solution into a blood vessel of a subject using the chemical solution injection tool.

現在、被験者の血管に薬液を注入する場合、シリンダ部材にピストン部材がスライド自在に挿入されている薬液容器に注射針を直接に装着し、その注射針を血管に直接に穿刺することがある。しかし、これは注入が長時間となる場合や大容量の薬液を注入する場合には困難なので、このような場合には、薬液容器に柔軟な延長チューブで注射針を連結している。   Currently, when a drug solution is injected into a blood vessel of a subject, an injection needle may be directly attached to a drug solution container in which a piston member is slidably inserted into a cylinder member, and the injection needle may be directly punctured into a blood vessel. However, this is difficult when injecting for a long time or injecting a large volume of chemical solution. In such a case, the injection needle is connected to the chemical solution container with a flexible extension tube.

さらに、被験者が長期間の入院患者などの場合には注射針の穿刺が何度も必要となることがある。このため、このような場合には血管に留置しても被験者の負担が微少な留置針が利用されている。   Further, when the subject is a long-term hospitalized patient or the like, puncture of the injection needle may be required many times. For this reason, in such a case, an indwelling needle is used that places a slight burden on the subject even if it is placed in a blood vessel.

また、CT(Computed Tomography)スキャナやMRI(Magnetic Resonance Imaging)装置などの透視撮像装置で被験者から透視画像を撮像する場合、一般的に被験者の血管に造影剤を注入する。しかし、透視画像の撮像は長時間となることがある。このため、このような場合にも造影剤の注入に留置針を利用する場合がある。   When a fluoroscopic image is taken from a subject with a fluoroscopic imaging device such as a CT (Computed Tomography) scanner or an MRI (Magnetic Resonance Imaging) device, a contrast agent is generally injected into the blood vessel of the subject. However, it may take a long time to capture a fluoroscopic image. For this reason, even in such a case, an indwelling needle may be used for injection of a contrast medium.

上述のような留置針の一従来例を図13を参照して以下に説明する。ここで薬液注入用具として例示する留置針10は、外針11と内針12と管状部材13とを有し、外針11は、例えば、シリコン樹脂で柔軟な管状に形成されている。内針12は、例えば、ステンレス合金で硬質な先鋭の針状に形成されており、この内針12が外針11の内部に挿入されている。   A conventional example of the indwelling needle as described above will be described below with reference to FIG. Here, the indwelling needle 10 exemplified as a chemical solution injection tool includes an outer needle 11, an inner needle 12, and a tubular member 13, and the outer needle 11 is formed into a flexible tubular shape with, for example, silicon resin. The inner needle 12 is formed, for example, in a hard, sharp needle shape made of a stainless alloy, and the inner needle 12 is inserted into the outer needle 11.

管状部材13は、硬質で透明な樹脂などで前端と後端とが開口した管状に形成されており、その前端開口に外針11の後端が一体に連結されている。また、管状部材13の後端開口には弾性部材であるパッキン14が装着されており、このパッキン14を内針12が貫通している。このパッキン14は管状部材13の後端開口を密閉しており、パッキン14から突出した内針12の後部にはノブ状部16が一体に形成されている。   The tubular member 13 is formed in a tubular shape having a front end and a rear end opened with a hard and transparent resin or the like, and the rear end of the outer needle 11 is integrally connected to the front end opening. A packing 14 that is an elastic member is attached to the rear end opening of the tubular member 13, and the inner needle 12 passes through the packing 14. The packing 14 seals the rear end opening of the tubular member 13, and a knob-like portion 16 is formed integrally with the rear portion of the inner needle 12 protruding from the packing 14.

管状部材13は、側部にも管状部分が形成されており、この管状部分にも開口が形成されている。この管状部分には別体の柔軟な延長チューブ17の前端がジョイント18により着脱自在に装着され、この延長チューブ17の後端には、薬液シリンジや薬液ボトルなどの薬液容器(図示せず)が着脱自在に装着される。なお、延長チューブ17には、気泡排除手段である排気弁(図示せず)が装着されており、この排気弁が延長チューブ17の内部の液体から気泡を排除する。   The tubular member 13 is also formed with a tubular portion on the side, and an opening is also formed in this tubular portion. A front end of a separate flexible extension tube 17 is detachably attached to the tubular portion by a joint 18, and a chemical container (not shown) such as a chemical syringe or a chemical bottle is attached to the rear end of the extension tube 17. It is attached detachably. The extension tube 17 is provided with an exhaust valve (not shown) as a bubble exclusion means, and this exhaust valve excludes bubbles from the liquid inside the extension tube 17.

上述のような構造の留置針10を使用する場合は、図13(a)に示すように、内針12が外針11の内部に配置された状態で、この外針11と内針12とが被験者の血管に穿刺される(図示せず)。   When the indwelling needle 10 having the above-described structure is used, the outer needle 11, the inner needle 12, and the inner needle 12 are arranged with the inner needle 12 disposed inside the outer needle 11 as shown in FIG. Is punctured into the blood vessel of the subject (not shown).

つぎに、図13(b)に示すように、このような状態でノブ状部16が引き出されて内針12が外針11と管状部材13から抜去されると、逆流する被験者の血液で外針11と管状部材13の内部が充填される。なお、このように内針12を離脱させると、パッキン14は弾性により開口が閉止される。   Next, as shown in FIG. 13 (b), when the knob-shaped portion 16 is pulled out in this state and the inner needle 12 is removed from the outer needle 11 and the tubular member 13, the blood of the subject who flows backward flows outside. The insides of the needle 11 and the tubular member 13 are filled. When the inner needle 12 is detached in this way, the opening of the packing 14 is closed by elasticity.

つぎに、図13(c)に示すように、後端に薬液容器が連結されて内部が薬液で充填された延長チューブ17の前端が管状部材13に連結され、例えば、排気弁により管状部材13と延長チューブ17との内部の液体から気泡が排除される。   Next, as shown in FIG. 13 (c), the front end of the extension tube 17 having a chemical container connected to the rear end and filled with the chemical liquid is connected to the tubular member 13, and the tubular member 13 is connected by, for example, an exhaust valve. And bubbles are excluded from the liquid inside the extension tube 17.

このような状態では、薬液容器から延長チューブ17と留置針10とを介して被験者の血管に薬液を注入することができ、それでいて血管に穿刺されている外針11は柔軟なので被験者の身体的な負担が軽減されている。   In such a state, the drug solution can be injected from the drug solution container into the blood vessel of the subject through the extension tube 17 and the indwelling needle 10, and the outer needle 11 punctured into the blood vessel is flexible, so The burden has been reduced.

外針11は柔軟であるが、血管に穿刺されるときには硬質な内針12で保持されている。このため、外針11を血管に容易に穿刺することができる。現在、上述のような留置針として各種の提案がある(例えば、特許文献1〜4参照)。
特開平07−328116号公報 特開平09−000629号公報 特開平10−015074号公報 特開平10−028739号公報
The outer needle 11 is flexible, but is held by a hard inner needle 12 when puncturing a blood vessel. For this reason, the outer needle 11 can be easily punctured into the blood vessel. Currently, there are various proposals for the indwelling needle as described above (see, for example, Patent Documents 1 to 4).
JP 07-328116 A JP 09-000629 A Japanese Patent Laid-Open No. 10-015074 Japanese Patent Laid-Open No. 10-028739

従来の留置針10は、作業者が薬液シリンジを手作業で操作することを想定して製造されている。このため、内針12が抜去されたパッキン14の貫通孔を弾性により充分に密閉することができた。   The conventional indwelling needle 10 is manufactured on the assumption that an operator manually operates a chemical syringe. For this reason, the through hole of the packing 14 from which the inner needle 12 was removed could be sufficiently sealed by elasticity.

しかし、CTスキャナやMRI装置などの透視撮像装置で被験者から透視画像を撮像する場合、造影剤などの薬液を薬液注入装置で被験者の血管に圧入することがある(図示せず)。   However, when a fluoroscopic imaging device such as a CT scanner or an MRI apparatus captures a fluoroscopic image from a subject, a chemical solution such as a contrast medium may be pressed into the subject's blood vessel using a chemical solution injection device (not shown).

このような薬液注入装置は、手作業では不可能な圧力で薬液シリンジを駆動する。このため、上述のようにパッキン14の弾性だけで貫通孔を密閉する構造では薬液の漏出を防止できない。   Such a chemical injection device drives the chemical syringe at a pressure that is impossible by manual work. For this reason, in the structure which seals a through-hole only with the elasticity of the packing 14 as mentioned above, the leakage of a chemical | medical solution cannot be prevented.

本発明は上述のような課題に鑑みてなされたものであり、薬液が高圧に注入されても内針が抜去された貫通孔から漏出しない薬液注入用具と、この薬液注入用具を利用して薬液を被験者の血管に注入する薬液注入装置と、を提供することを目的とする。   The present invention has been made in view of the problems as described above, and a chemical solution injection tool that does not leak from the through hole from which the inner needle has been removed even when the chemical solution is injected at a high pressure, and a chemical solution using this chemical solution injection tool It is an object of the present invention to provide a chemical liquid injection device for injecting a liquid into a blood vessel of a subject.

本発明の薬液注入用具は、被験者の血管に薬液を注入するための薬液注入用具であって、血管の内部に少なくとも前部が留置される柔軟な中空の外針と、少なくとも外針の内部に挿入されていて血管に穿刺される前部が硬質な内針と、外針の後端が前端開口に一体に連結されているとともに後端開口から内針の後部が突出している管状部材と、内針が挿通されている貫通孔を中心とした円錐凹面に前面が形成されていて管状部材の内部後端に配置されている凹面部材と、管状部材の内部で凹面部材より前方に配置されていて内針が抜去されると円錐凹面に密着する密閉部材と、を有する。   A drug solution injection tool of the present invention is a drug solution injection tool for injecting a drug solution into a blood vessel of a subject, and includes a flexible hollow outer needle in which at least a front portion is indwelled inside the blood vessel, and at least the inside of the outer needle. A rigid inner needle that is inserted and punctured into a blood vessel, a tubular member in which the rear end of the outer needle is integrally connected to the front end opening, and the rear part of the inner needle protrudes from the rear end opening; A front surface is formed on a conical concave surface centering on a through-hole through which the inner needle is inserted, and a concave member disposed at the inner rear end of the tubular member; and a front surface of the concave member inside the tubular member. And a sealing member that comes into close contact with the conical concave surface when the inner needle is removed.

従って、本発明の薬液注入用具では、内針が挿入されている外針が血管に穿刺されてから、その外針から内針が抜去される。このとき、内針が凹面部材の貫通孔から抜去されると、その凹面部材の円錐凹面に密閉部材が密着する。このため、管状部材に圧入される薬液の圧力により、密閉部材が凹面部材の円錐凹面に密着される。   Therefore, in the drug solution injector of the present invention, after the outer needle into which the inner needle is inserted is punctured into the blood vessel, the inner needle is removed from the outer needle. At this time, when the inner needle is removed from the through hole of the concave member, the sealing member comes into close contact with the conical concave surface of the concave member. For this reason, the sealing member is brought into close contact with the conical concave surface of the concave member due to the pressure of the chemical liquid press-fitted into the tubular member.

本発明の薬液注入装置は、被験者の血管に薬液を注入するための薬液注入用具に延長チューブで連結された薬液シリンジを駆動する薬液注入装置であって、本発明の薬液注入用具のRFIDチップから耐圧を取得するRFIDリーダと、薬液シリンジを駆動するシリンジ駆動機構と、圧入される薬液の圧力を検出する圧力検出部と、検出される圧力が取得された耐圧を超過しないようにシリンジ駆動機構を動作制御する動作制御部と、を有する。   The chemical solution injection device of the present invention is a chemical solution injection device that drives a chemical solution syringe connected by an extension tube to a chemical solution injection device for injecting a chemical solution into a blood vessel of a subject, from the RFID chip of the chemical solution injection device of the present invention. An RFID reader that acquires pressure resistance, a syringe drive mechanism that drives a chemical syringe, a pressure detection unit that detects the pressure of the injected chemical liquid, and a syringe drive mechanism that prevents the detected pressure from exceeding the acquired pressure resistance An operation control unit for controlling operation.

従って、本発明の薬液注入装置では、薬液注入用具ごとに相違する耐圧が自動的に取得され、その耐圧を超過しないように注入される薬液の圧力が制御される。このため、耐圧を超過した圧力で薬液が薬液注入用具に圧入されることがない。   Therefore, in the chemical injection device of the present invention, the pressure resistance that differs for each chemical injection tool is automatically acquired, and the pressure of the chemical solution to be injected is controlled so as not to exceed the pressure resistance. For this reason, a chemical | medical solution is not press-fitted into a chemical | medical solution injection tool with the pressure exceeding pressure | voltage resistance.

なお、本発明で云う各種の構成要素は、かならずしも個々に独立した存在である必要はなく、複数の構成要素が一個の部材として形成されていること、ある構成要素が他の構成要素の一部であること、ある構成要素の一部と他の構成要素の一部とが重複していること、等も可能である。   Note that the various constituent elements referred to in the present invention do not necessarily have to be independent of each other, and a plurality of constituent elements are formed as one member, and a certain constituent element is a part of another constituent element. It is also possible that a part of a certain component and a part of another component overlap.

また、本発明では前後方向を規定しているが、これは各種の構成要素の相対関係を簡単に説明するために便宜的に規定したものであり、本発明を実施する場合の製造時や使用時の方向を限定するものではない。   In the present invention, the front-rear direction is defined, but this is defined for convenience in order to briefly explain the relative relationship between various components. It does not limit the direction of time.

さらに、本発明で云う円錐凹面とは、円錐状の凹面であればよい。このため、可展面からなる完全な円錐形である必要はなく、半球状の非可展面などでもよい。また、本発明で云う前部とは、前端から任意の位置までの部分を意味しており、後部とは、後端から任意の位置までの部分を意味している。   Furthermore, the conical concave surface referred to in the present invention may be a conical concave surface. For this reason, it does not need to be a complete conical shape consisting of a developable surface, and may be a hemispherical non-expandable surface. In addition, the front part referred to in the present invention means a part from the front end to an arbitrary position, and the rear part means a part from the rear end to an arbitrary position.

本発明の薬液注入用具では、管状部材に圧入される薬液の圧力により、密閉部材が凹面部材の円錐凹面に密着される。このため、薬液が高圧に圧入されても凹面部材の貫通孔から漏出することがない。しかも、内針が凹面部材から抜去されると自動的に密閉部材が円錐凹面に密着する。このため、専用の操作などを必要とすることなく自動的に凹面部材の貫通孔を密閉することができる。   In the chemical injection device of the present invention, the sealing member is brought into close contact with the conical concave surface of the concave member by the pressure of the chemical liquid press-fitted into the tubular member. For this reason, even if a chemical | medical solution is press-fitted in high pressure, it does not leak from the through-hole of a concave surface member. Moreover, when the inner needle is removed from the concave member, the sealing member automatically comes into close contact with the conical concave surface. For this reason, the through-hole of the concave member can be automatically sealed without requiring a dedicated operation.

本発明の薬液注入装置では、薬液注入用具に耐圧を超過した圧力で薬液が圧入されることがない。このため、薬液注入用具の内針が抜去された貫通孔から薬液が漏出することを有効に防止でき、薬液注入用具が異常な高圧により破壊されることもない。   In the chemical solution injector of the present invention, the chemical solution is not pressed into the chemical solution injection tool at a pressure exceeding the pressure resistance. For this reason, it can prevent effectively that a chemical | medical solution leaks from the through-hole from which the inner needle of the chemical | medical solution injection tool was extracted, and a chemical | medical solution injection tool is not destroyed by abnormally high pressure.

本発明の実施の一形態を図1ないし図4を参照して以下に説明する。本発明の実施の形態の薬液注入システム1000は、薬液注入装置100、薬液容器である薬液シリンジ200、薬液注入用具である留置針300、透視撮像装置であるMRI装置400、を有する。   An embodiment of the present invention will be described below with reference to FIGS. A chemical liquid injection system 1000 according to an embodiment of the present invention includes a chemical liquid injection apparatus 100, a chemical liquid syringe 200 that is a chemical liquid container, an indwelling needle 300 that is a chemical liquid injection tool, and an MRI apparatus 400 that is a fluoroscopic imaging apparatus.

このMRI装置400は、撮像実行機構である透視撮像ユニット401と撮像制御ユニット402とを有する。透視撮像ユニット401は被験者(図示せず)から透視画像を撮像し、撮像制御ユニット402は透視撮像ユニット401を動作制御する。   The MRI apparatus 400 includes a fluoroscopic imaging unit 401 and an imaging control unit 402 that are imaging execution mechanisms. The fluoroscopic imaging unit 401 captures a fluoroscopic image from a subject (not shown), and the imaging control unit 402 controls the operation of the fluoroscopic imaging unit 401.

薬液シリンジ200は、図2に示すように、シリンダ部材210とピストン部材220とを有し、シリンダ部材210にピストン部材220がスライド自在に挿入されている。シリンダ部材210は、円筒形の中空の本体部211を有し、この本体部211の閉塞した前端に導管部212が形成されている。   As illustrated in FIG. 2, the chemical syringe 200 includes a cylinder member 210 and a piston member 220, and the piston member 220 is slidably inserted into the cylinder member 210. The cylinder member 210 has a cylindrical hollow main body portion 211, and a conduit portion 212 is formed at the closed front end of the main body portion 211.

シリンダ部材210の本体部211の後端は開口されており、この開口から本体部211の内部にピストン部材220が挿入されている。シリンダ部材210の後端外周にはシリンダフランジ213が形成されており、ピストン部材220の後端外周にはピストンフランジ221が形成されている。   The rear end of the main body 211 of the cylinder member 210 is opened, and the piston member 220 is inserted into the main body 211 from this opening. A cylinder flange 213 is formed on the outer periphery of the rear end of the cylinder member 210, and a piston flange 221 is formed on the outer periphery of the rear end of the piston member 220.

なお、この薬液シリンジ200としては、薬液として造影剤が充填されている造影シリンジ200Cと、薬液として生理食塩水が充填されている生食シリンジ200Pと、があり、薬液注入装置100には、造影および生食シリンジ200C,200Pが一個ずつ同時に装着される。   The chemical syringe 200 includes a contrast syringe 200C filled with a contrast medium as a chemical liquid and a saline syringe 200P filled with physiological saline as a chemical liquid. The raw eating syringes 200C and 200P are attached one by one at the same time.

本実施の形態の薬液注入装置100は、図3に示すように、注入制御ユニット101と注入ヘッド110とが別体に形成されており、その注入制御ユニット101と注入ヘッド110とは通信ケーブル102で有線接続されている。注入ヘッド110は、装着される薬液シリンジ200を駆動して被験者に薬液を注入し、注入制御ユニット101は、注入ヘッド110を動作制御する。   As shown in FIG. 3, the chemical injection device 100 of the present embodiment has an injection control unit 101 and an injection head 110 formed separately, and the injection control unit 101 and the injection head 110 are connected to a communication cable 102. Wired connection. The injection head 110 drives the chemical syringe 200 to be attached to inject the chemical into the subject, and the injection control unit 101 controls the operation of the injection head 110.

注入ヘッド110は、キャスタスタンド111の上端に可動アーム112で装着されており、そのヘッド本体113の上面には、薬液シリンジ200が着脱自在に装着される半円筒形の溝状の凹部114が二つ形成されている。   The injection head 110 is attached to the upper end of the caster stand 111 with a movable arm 112. On the upper surface of the head main body 113, there are two semi-cylindrical groove-like recesses 114 to which the chemical syringe 200 is detachably attached. One is formed.

この凹部114には、薬液シリンジ200のシリンダフランジ213を着脱自在に保持するシリンダ保持機構116が凹溝で形成されており、その後方には、ピストンフランジ221を保持してスライド移動させるシリンジ駆動機構117が配置されている。   A cylinder holding mechanism 116 that detachably holds the cylinder flange 213 of the chemical syringe 200 is formed in the concave portion 114 as a concave groove, and a syringe drive mechanism that holds and slides the piston flange 221 behind the cylinder holding mechanism 116. 117 is arranged.

シリンジ駆動機構117は、作動時にも磁界を発生しない超音波モータ(図示せず)を駆動源として個々に有し、ネジ機構(図示せず)などによりピストン部材220をスライド移動させる。   The syringe drive mechanism 117 has an ultrasonic motor (not shown) that does not generate a magnetic field even when it is operated as a drive source, and slides the piston member 220 by a screw mechanism (not shown) or the like.

注入ヘッド110の二つの凹部114には、造影および生食シリンジ200C,200Pが個々に装着される。このため、これら二つの凹部114と二個のシリンジ駆動機構117により、被験者に造影剤を注入する造影注入機構117Cと生理食塩水を注入する生食注入機構117Pとが形成されている。   In the two recesses 114 of the injection head 110, the contrast and saline syringes 200C and 200P are individually attached. For this reason, a contrast injection mechanism 117C for injecting a contrast medium into a subject and a saline injection mechanism 117P for injecting physiological saline are formed by these two concave portions 114 and two syringe drive mechanisms 117.

本実施の形態の薬液注入装置100では、少なくとも注入ヘッド110の各部が非磁性体で形成されており、非磁性体で形成できない部分は防磁されている。例えば、超音波モータなどの金属部分は、燐青銅合金(Cu+Sn+P)、チタン合金(Ti-6Al-4V)、マグネシウム合金(Mg+Al+Zn)、などの非磁性体で形成されており、ヘッド本体113などは非磁性体の樹脂で形成されている。   In the chemical injection device 100 of the present embodiment, at least each part of the injection head 110 is formed of a nonmagnetic material, and portions that cannot be formed of a nonmagnetic material are shielded. For example, metal parts such as ultrasonic motors are made of non-magnetic materials such as phosphor bronze alloy (Cu + Sn + P), titanium alloy (Ti-6Al-4V), magnesium alloy (Mg + Al + Zn), etc. The head main body 113 and the like are made of a nonmagnetic resin.

注入制御ユニット101は、操作パネル103、タッチパネル104、スピーカユニット105、等が本体ハウジング106の前面に配置されており、別体のコントローラユニット107が接続コネクタ108で有線接続されている。   The injection control unit 101 includes an operation panel 103, a touch panel 104, a speaker unit 105, and the like arranged on the front surface of the main body housing 106, and a separate controller unit 107 is connected by wire with a connection connector 108.

本実施の形態の薬液注入装置100は、基本的には注入制御ユニット101への手動操作で注入ヘッド110が動作制御されるが、簡単な手動操作を受け付ける操作パネルが注入ヘッド110の上面後部にも形成されている。   In the chemical injection device 100 according to the present embodiment, the operation of the injection head 110 is basically controlled by a manual operation to the injection control unit 101, but an operation panel that accepts a simple manual operation is provided at the rear upper surface of the injection head 110. Is also formed.

本実施の形態の留置針300は、図1に示すように、血管の内部に少なくとも前部が留置される柔軟な中空の外針310と、少なくとも外針310の内部に挿入されていて血管に穿刺される前部が硬質な内針320と、外針310の後端が前端開口に一体に連結されているとともに後端開口から内針320の後部が突出している管状部材330と、内針320が挿通されている貫通孔361を中心とした円錐凹面362に前面が形成されていて管状部材330の内部後端に配置されている凹面部材360と、管状部材330の内部で凹面部材360より前方に配置されていて内針320が抜去されると円錐凹面362に密着する密閉部材370と、を有する。   As shown in FIG. 1, the indwelling needle 300 of the present embodiment includes a flexible hollow outer needle 310 in which at least a front part is indwelled inside a blood vessel, and at least the inside of the outer needle 310 inserted into the blood vessel. An inner needle 320 having a hard front portion to be punctured, a tubular member 330 having a rear end of the outer needle 310 integrally connected to the front end opening and a rear portion of the inner needle 320 protruding from the rear end opening, and an inner needle A concave member 360 having a front surface formed on a conical concave surface 362 centering on a through-hole 361 through which 320 is inserted and disposed at the inner rear end of the tubular member 330, and a concave member 360 inside the tubular member 330 from the concave surface member 360. And a sealing member 370 that is disposed forward and comes into close contact with the conical concave surface 362 when the inner needle 320 is removed.

より具体的には、外針310は、例えば、柔軟なシリコン樹脂により、湾曲は容易であるが伸縮は困難な細管状に形成されている。内針320は、針本体321とガイドワイヤ322とを有する。   More specifically, the outer needle 310 is formed of a flexible silicone resin, for example, in a thin tubular shape that is easy to curve but difficult to expand and contract. The inner needle 320 has a needle body 321 and a guide wire 322.

内針320の針本体321は、例えば、硬質なステンレス合金により、先鋭な形状に形成されている。ガイドワイヤ322は、例えば、湾曲は容易であるが伸縮は困難な金属製の柔軟なワイヤで形成されており、その前端が針本体321の後端に一体に連結されている。   The needle body 321 of the inner needle 320 is formed in a sharp shape, for example, with a hard stainless alloy. For example, the guide wire 322 is formed of a flexible metal wire that is easy to bend but difficult to expand and contract, and its front end is integrally connected to the rear end of the needle body 321.

なお、針本体321は、前端から後端まで流路323が連通した管状に形成されている。針本体321の後端開口に挿入されたガイドワイヤ322は、かしめや接着などで固定されている。この固定により針本体321の流路323の後端開口は閉塞されているが、流路323に連通する開口324が針本体321の後部側面に形成されている。   The needle body 321 is formed in a tubular shape in which a flow path 323 communicates from the front end to the rear end. The guide wire 322 inserted into the rear end opening of the needle body 321 is fixed by caulking or bonding. Although the rear end opening of the flow path 323 of the needle main body 321 is closed by this fixing, an opening 324 communicating with the flow path 323 is formed on the rear side surface of the needle main body 321.

管状部材330は、例えば、柔軟な樹脂製のチューブ部材331と硬質な樹脂製の管状本体332とを有し、これらは前端と後端とが開口した中空構造に各々形成されている。   The tubular member 330 includes, for example, a flexible resin tube member 331 and a hard resin tubular body 332, which are each formed in a hollow structure having an open front end and rear end.

チューブ部材331の後端と管状本体332の前端とは一体に連結されて相互の開口が連通されている。このため、前端と後端とが開口した中空構造の管状部材330が形成されている。   The rear end of the tube member 331 and the front end of the tubular main body 332 are integrally connected to communicate with each other. For this reason, a tubular member 330 having a hollow structure in which the front end and the rear end are opened is formed.

チューブ部材331は、例えば、湾曲は容易であるが伸縮は困難に形成されており、その前端に外針310の後端が一体に連結されて相互の開口が連通している。図1(a)に示すように、出荷状態の留置針300では、外針310の内部に内針320の針本体321が挿入されており、内針320の前端が外針310の前端から突出してる。   For example, the tube member 331 is easily bent but is difficult to expand and contract, and the rear end of the outer needle 310 is integrally connected to the front end of the tube member 331 so that the openings of the tube member 331 communicate with each other. As shown in FIG. 1A, in the indwelling needle 300 in the shipping state, the needle body 321 of the inner needle 320 is inserted into the outer needle 310, and the front end of the inner needle 320 protrudes from the front end of the outer needle 310. I'm.

さらに、内針320のガイドワイヤ322は管状部材330のチューブ部材331と管状本体332との内部を挿通されており、ガイドワイヤ322の後部は管状本体332の後端開口から突出している。   Further, the guide wire 322 of the inner needle 320 is inserted through the tube member 331 and the tubular main body 332 of the tubular member 330, and the rear part of the guide wire 322 protrudes from the rear end opening of the tubular main body 332.

凹面部材360は、柔軟で薬液と反応しないシリコン樹脂などで形成されている。前述のように、内針320が挿通されている貫通孔361を中心とした円錐凹面362に前面が形成されており、管状本体332の内部後端に配置されている。   The concave member 360 is made of a silicone resin that is flexible and does not react with the chemical solution. As described above, the front surface is formed on the conical concave surface 362 centering on the through-hole 361 through which the inner needle 320 is inserted, and is disposed at the inner rear end of the tubular main body 332.

密閉部材370も、柔軟で薬液と反応せず、凹面部材360との密着性が良好なシリコン樹脂などで形成されている。密閉部材370は、前述のように管状部材330の内部で凹面部材360より前方に配置されており、その貫通孔371に内針320が貫通されている。   The sealing member 370 is also made of a silicon resin or the like that is flexible and does not react with the chemical solution and has good adhesion to the concave member 360. As described above, the sealing member 370 is disposed in front of the concave member 360 inside the tubular member 330, and the inner needle 320 passes through the through-hole 371.

そして、詳細には後述するが、凹面部材360は、図5に示すように、内針320が貫通されている密閉部材370を凹面部材360の円錐凹面362から離間した位置に保持するとともに、内針320が抜去されて凹面部材360の円錐凹面362まで移動する密閉部材370を回動させる係合部材363が一体に形成されている。   As will be described in detail later, the concave member 360 holds the sealing member 370 through which the inner needle 320 passes, at a position away from the conical concave surface 362 of the concave member 360, as shown in FIG. An engagement member 363 that rotates the sealing member 370 that moves to the conical concave surface 362 of the concave surface member 360 after the needle 320 is removed is integrally formed.

なお、本実施の形態の留置針300は、さらに、カバー部材340、延長チューブ350、なども有する。カバー部材340は、前後方向に伸縮自在な蛇腹構造に形成されており、その内部に内針320が配置されている。内針320とカバー部材340とは後端で一体に固定されており、この部分は把持が容易なノブ状部341として形成されている。   Note that the indwelling needle 300 of the present embodiment further includes a cover member 340, an extension tube 350, and the like. The cover member 340 is formed in a bellows structure that can be expanded and contracted in the front-rear direction, and an inner needle 320 is disposed therein. The inner needle 320 and the cover member 340 are integrally fixed at the rear end, and this portion is formed as a knob-shaped portion 341 that can be easily gripped.

カバー部材340の前端部分342は円筒状に形成されており、管状本体332の後端開口に着脱自在に装着されている。つまり、カバー部材340は、伸縮自在な蛇腹部分343の前後に伸縮困難な前端部分342とノブ状部341とが一体に形成された構造となっている。   The front end portion 342 of the cover member 340 is formed in a cylindrical shape, and is detachably attached to the rear end opening of the tubular main body 332. That is, the cover member 340 has a structure in which the front end portion 342 and the knob-shaped portion 341 that are difficult to expand and contract are integrally formed on the front and rear of the expandable bellows portion 343.

そして、カバー部材340は、図1(b)に示すように、伸張状態では内針320より長く形成されている。このため、管状部材330から内針320がカバー部材340とともに分離された状態では、カバー部材340により内針320の全体が収容される。換言すると、図1(a)に示すように、出荷状態の留置針300では、カバー部材340は、管状部材330から後方に突出した内針320の長さに圧縮されている。   The cover member 340 is formed longer than the inner needle 320 in the extended state, as shown in FIG. For this reason, in the state where the inner needle 320 is separated from the tubular member 330 together with the cover member 340, the entire inner needle 320 is accommodated by the cover member 340. In other words, as shown in FIG. 1A, in the indwelling needle 300 in the shipping state, the cover member 340 is compressed to the length of the inner needle 320 protruding rearward from the tubular member 330.

カバー部材340は、シリコン樹脂などの弾性材料で形成されており、放置すると弾発的に圧縮状態から伸張状態となる。そして、本実施の形態の留置針300では、内針320を外針310から抜去するためのカバー部材340の後端の移動に必要な力をC、圧縮状態のカバー部材340から内針320に作用している力をDとすると、
C>D
を満足するように各部が調整されている。
The cover member 340 is formed of an elastic material such as silicon resin, and when left alone, the cover member 340 elastically changes from a compressed state to an extended state. In the indwelling needle 300 according to the present embodiment, the force necessary for moving the rear end of the cover member 340 for removing the inner needle 320 from the outer needle 310 is C, and the compressed cover member 340 is moved to the inner needle 320. If the acting force is D,
C> D
Each part has been adjusted to satisfy.

より具体的には、図1(a)に示すように、出荷状態の留置針300では、内針320は外針310と凹面部材360と密閉部材370との摩擦力により保持されている。このため、この摩擦力が上述の力Cとして作用している。   More specifically, as shown in FIG. 1A, in the indwelling needle 300 in the shipping state, the inner needle 320 is held by the frictional force of the outer needle 310, the concave member 360, and the sealing member 370. For this reason, this frictional force acts as the aforementioned force C.

このような状態で、内針320の凹面部材360から後方に突出している部分には、圧縮状態のカバー部材340から力が作用している。このため、これが上述の力Dとして作用している。そして、本実施の形態の留置針300では、各部の材料や表面処理などにより、上述の力C、Dが「C>D」を満足している。   In such a state, a force is applied to the portion of the inner needle 320 that protrudes rearward from the concave surface member 360 from the compressed cover member 340. For this reason, this acts as the aforementioned force D. And in the indwelling needle 300 of this Embodiment, the above-mentioned forces C and D satisfy "C> D" by the material of each part, surface treatment, etc.

なお、本実施の形態の留置針300では、管状部材330の管状本体332は、いわゆる二股構造に形成されており、側部から後方に分岐管部335が一体に形成されている。この分岐管部335は、管状本体332の内部に連通する開口として注入口が開口されており、そこに延長チューブ350の先端がジョイント351により一体に連結されている。   In the indwelling needle 300 of the present embodiment, the tubular main body 332 of the tubular member 330 is formed in a so-called bifurcated structure, and a branch pipe portion 335 is integrally formed from the side to the rear. The branch pipe portion 335 has an inlet opening as an opening communicating with the inside of the tubular main body 332, and the distal end of the extension tube 350 is integrally connected thereto by a joint 351.

さらに、図2に示すように、この延長チューブ350は二股に形成されており、この延長チューブ350の二つの末端には、薬液容器である造影および生食シリンジ200C,200Pが個々に着脱自在に装着される。   Further, as shown in FIG. 2, the extension tube 350 is formed in a bifurcated manner, and the contrast and saline syringes 200C and 200P, which are drug solution containers, are detachably attached to the two ends of the extension tube 350, respectively. Is done.

なお、本実施の形態の留置針300では、出荷時には管状部材330と延長チューブ350との内部が生理食塩水で充填されており、延長チューブ350の末端には密閉キャップ(図示せず)が着脱自在に装着されている。また、延長チューブ350は、所定位置に気泡排除手段である排気弁(図示せず)が装着されている。   In the indwelling needle 300 of the present embodiment, the inside of the tubular member 330 and the extension tube 350 is filled with physiological saline at the time of shipment, and a sealing cap (not shown) is attached to the end of the extension tube 350. It is installed freely. Further, the extension tube 350 is provided with an exhaust valve (not shown) as a bubble removing means at a predetermined position.

上述のような構成において、本実施の形態の薬液注入装置100を使用する場合、図4に示すように、作業者(図示せず)はMRI装置400の透視撮像ユニット401の近傍に薬液注入装置100を配置し、使用する薬液シリンジ200や留置針300などを用意する。   In the configuration as described above, when using the chemical injection device 100 according to the present embodiment, as shown in FIG. 4, an operator (not shown) places the chemical injection device near the fluoroscopic imaging unit 401 of the MRI apparatus 400. 100 is arranged, and a chemical syringe 200 and an indwelling needle 300 to be used are prepared.

つぎに、例えば、図2に示すように、留置針300の延長チューブ350の二つの末端から密閉キャップが取り外され、その二つの末端に造影および生食シリンジ200C,200Pが個々に連結される。   Next, for example, as shown in FIG. 2, the sealing cap is removed from the two ends of the extension tube 350 of the indwelling needle 300, and the contrast and saline syringes 200C and 200P are individually connected to the two ends.

前述のように、留置針300の内部は事前に生理食塩水で充填されている。このため、その後端に造影および生食シリンジ200C,200Pが連結されると、これら造影および生食シリンジ200C,200Pと留置針300との内部には空気が存在しない状態となる。   As described above, the interior of the indwelling needle 300 is filled with physiological saline in advance. For this reason, when the contrast and saline syringes 200C and 200P are connected to the rear end, no air exists in the contrast and saline syringes 200C and 200P and the indwelling needle 300.

なお、本実施の形態の留置針300は、内針320の先端と管状部材330の内部とを連通させる流路323が針本体321に形成されている。このため、被験者の血管(図示せず)に穿刺した外針310から内針320が抜き取られない状態のまま空気抜きを実行することもできる。   In the indwelling needle 300 of the present embodiment, the needle body 321 is formed with a flow path 323 that allows the tip of the inner needle 320 to communicate with the inside of the tubular member 330. For this reason, it is possible to perform air venting while the inner needle 320 is not removed from the outer needle 310 punctured into the blood vessel (not shown) of the subject.

そして、上述のように造影および生食シリンジ200C,200Pと留置針300との内部に空気が存在しない状態で、留置針300の外針310と内針320とが被験者の血管に穿刺される。   Then, as described above, the outer needle 310 and the inner needle 320 of the indwelling needle 300 are punctured into the blood vessel of the subject in a state where no air exists in the contrast and saline syringes 200C and 200P and the indwelling needle 300.

このような状態で、ノブ状部341が引き出されて内針320が外針310と管状部材330から抜去される。このとき、図5に示すように、管状部材330の内部では内針320が密閉部材370と凹面部材360から抜去される。   In this state, the knob-shaped portion 341 is pulled out, and the inner needle 320 is removed from the outer needle 310 and the tubular member 330. At this time, as shown in FIG. 5, the inner needle 320 is removed from the sealing member 370 and the concave member 360 inside the tubular member 330.

より詳細には、密閉部材370は、図5(a)に示すように、内針320が貫通されている状態では、係合部材363により凹面部材360の前方に保持されている。しかし、内針320が抜去されるとき、その内針320との摩擦力や薬液の圧力などのため、管状部材330の内部を後方に移動する。   More specifically, as shown in FIG. 5A, the sealing member 370 is held in front of the concave member 360 by the engaging member 363 when the inner needle 320 is penetrated. However, when the inner needle 320 is withdrawn, the inside of the tubular member 330 is moved backward due to the frictional force with the inner needle 320 or the pressure of the chemical solution.

このとき、球形の密閉部材370は、図5(b)に示すように、外面に係合部材363が係合することで回動する。そして、この回動した密閉部材370が、図5(c)に示すように、薬液の圧力により凹面部材360の円錐凹面362に密着する。このため、密閉部材370と凹面部材360との貫通孔371,361が連通せず、凹面部材360の貫通孔361が密閉部材370により密閉される。   At this time, the spherical sealing member 370 rotates as the engaging member 363 engages with the outer surface, as shown in FIG. Then, as shown in FIG. 5C, the rotated sealing member 370 comes into close contact with the conical concave surface 362 of the concave surface member 360 by the pressure of the chemical solution. For this reason, the through holes 371 and 361 between the sealing member 370 and the concave member 360 do not communicate with each other, and the through hole 361 of the concave member 360 is sealed with the sealing member 370.

上述のような状態で、薬液注入装置100により薬液シリンジ200が駆動される。すると、薬液シリンジ200から延長チューブ350と留置針300とを経由して血管に薬液が圧入される。このとき、留置針300の凹面部材360の貫通孔361は密閉部材370により密閉されているので、薬液は漏出することなく血管に注入される。   In the state as described above, the chemical syringe 200 is driven by the chemical injection device 100. Then, the drug solution is pressed into the blood vessel from the drug solution syringe 200 via the extension tube 350 and the indwelling needle 300. At this time, since the through-hole 361 of the concave member 360 of the indwelling needle 300 is sealed by the sealing member 370, the chemical solution is injected into the blood vessel without leaking.

このように薬液注入装置100により造影剤と生理食塩水とが順番に被験者の血管に注入されると、この被験者からMRI装置400により透視画像が撮像される。なお、上述のように留置針300に造影および生食シリンジ200C,200Pを連結するときに気泡が進入する可能性はある。しかし、その気泡は留置針300の排気弁により外部に排除される。   As described above, when the contrast medium and the physiological saline are sequentially injected into the blood vessel of the subject by the chemical injection device 100, a fluoroscopic image is taken from the subject by the MRI device 400. As described above, there is a possibility that bubbles may enter when the contrast and saline syringes 200C and 200P are connected to the indwelling needle 300. However, the bubbles are excluded to the outside by the exhaust valve of the indwelling needle 300.

本実施の形態の留置針300は、上述のように内針320が抜去された凹面部材360の貫通孔361が内側から密閉部材370により密閉される。このため、薬液注入装置100により薬液が高圧に圧入されても、留置針300から漏出することがない。   In the indwelling needle 300 of the present embodiment, the through hole 361 of the concave member 360 from which the inner needle 320 has been removed as described above is sealed from the inside by the sealing member 370. For this reason, even if a chemical solution is press-fitted at a high pressure by the chemical solution injector 100, it does not leak from the indwelling needle 300.

しかも、内針320が凹面部材360から抜去されると自動的に密閉部材370が円錐凹面362に密着する。このため、専用の操作などを必要とすることなく自動的に凹面部材360の貫通孔361を密閉することができる。   Moreover, when the inner needle 320 is removed from the concave member 360, the sealing member 370 automatically comes into close contact with the conical concave surface 362. For this reason, the through-hole 361 of the concave member 360 can be automatically sealed without requiring a dedicated operation.

さらに、密閉部材370は凹面部材360に密着するまでに係合部材363により回動される。このため、密閉部材370と凹面部材360との貫通孔371,361が連通することがなく、凹面部材360の貫通孔361を密閉部材370により確実に密閉することができる。   Further, the sealing member 370 is rotated by the engaging member 363 until it comes into close contact with the concave surface member 360. Therefore, the through holes 371 and 361 between the sealing member 370 and the concave member 360 do not communicate with each other, and the through hole 361 of the concave member 360 can be reliably sealed with the sealing member 370.

しかも、上述の係合部材363は凹面部材360と一体に形成されている。このため、適切な位置に係合部材363を簡単に形成することができ、生産性が良好な構造の留置針300を提供することができる。   Moreover, the engaging member 363 described above is formed integrally with the concave member 360. For this reason, the engaging member 363 can be easily formed at an appropriate position, and the indwelling needle 300 having a structure with good productivity can be provided.

さらに、本実施の形態の留置針300では、上述のように外針310と管状部材330と延長チューブ350とが一体に連結されている。このため、薬液注入装置100により高圧に注入される薬液が、管状部材330と延長チューブ350との連結部から漏出することもない。しかも、被験者の血管に外針310が穿刺された状態で管状部材330に延長チューブ350を連結する必要がないので作業性が良好である。   Furthermore, in the indwelling needle 300 of the present embodiment, the outer needle 310, the tubular member 330, and the extension tube 350 are integrally connected as described above. For this reason, the chemical liquid injected at a high pressure by the chemical liquid injector 100 does not leak out from the connecting portion between the tubular member 330 and the extension tube 350. In addition, it is not necessary to connect the extension tube 350 to the tubular member 330 in a state where the outer needle 310 is punctured into the blood vessel of the subject, so that workability is good.

さらに、延長チューブ350と管状部材330との内部に薬液として生理食塩水が事前に充填されており、延長チューブ350に液体から気泡を排除する排気弁が装着されている。このため、留置針300を被験者の血管に連結したとき、その内部から簡単に気泡を排除することができる。   Further, the inside of the extension tube 350 and the tubular member 330 is preliminarily filled with physiological saline as a chemical solution, and the extension tube 350 is equipped with an exhaust valve for removing bubbles from the liquid. For this reason, when the indwelling needle 300 is connected to the blood vessel of the subject, bubbles can be easily removed from the inside thereof.

しかも、延長チューブ350の末端が二股構造に形成されている。このため、造影剤が充填されている造影シリンジ200Cと生理食塩水が充填されている生食シリンジ200Pとを同時に留置針300に連結することができる。このため、簡単な構造で確実に被験者の血管に造影剤と生理食塩水とを自在に注入することができ、MRI装置400での透視画像の撮像に寄与することができる。   Moreover, the end of the extension tube 350 is formed in a bifurcated structure. For this reason, the contrast syringe 200 </ b> C filled with the contrast agent and the saline syringe 200 </ b> P filled with physiological saline can be simultaneously connected to the indwelling needle 300. For this reason, it is possible to reliably inject the contrast medium and the physiological saline into the blood vessel of the subject with a simple structure, and contribute to the imaging of the fluoroscopic image with the MRI apparatus 400.

さらに、本実施の形態の留置針300では、上述のように被験者に穿刺された外針310および管状部材330から内針320が抜去されると、図1(b)に示すように、圧縮されていたカバー部材340が弾発的に伸張して抜去された内針320の全体が収容される。   Furthermore, in the indwelling needle 300 of the present embodiment, when the inner needle 320 is removed from the outer needle 310 and the tubular member 330 punctured by the subject as described above, as shown in FIG. The entire inner needle 320 from which the cover member 340 has been elastically extended and removed is accommodated.

そこで、作業者はカバー部材340で収容された状態の内針320を廃棄することになり、内針320が作業者に穿刺されて二次感染が発生するようなことがない。しかも、本実施の形態の留置針300では、外針310および管状部材330から内針320が抜去されると、カバー部材340が自然に伸張して内針320の全体が自動的に収容される。このため、カバー部材340に内針320を収容させる専用の作業などが必要ない。   Therefore, the worker discards the inner needle 320 accommodated in the cover member 340, and the inner needle 320 is not punctured by the worker and secondary infection does not occur. Moreover, in the indwelling needle 300 of the present embodiment, when the inner needle 320 is removed from the outer needle 310 and the tubular member 330, the cover member 340 naturally expands and the entire inner needle 320 is automatically accommodated. . For this reason, a dedicated work for accommodating the inner needle 320 in the cover member 340 is not necessary.

さらに、カバー部材340は内針320を収容した状態を弾発的に維持する。このため、例えば、カバー部材340の前端が上方や下方に位置する状態などになっても内針320が露出するようなことがない。このため、被験者の血液が付着した内針320に作業者が接触することがなく、簡単かつ安全に内針320を廃棄することができる。   Further, the cover member 340 elastically maintains the state in which the inner needle 320 is accommodated. For this reason, for example, even if the front end of the cover member 340 is located above or below, the inner needle 320 is not exposed. For this reason, an operator does not contact the inner needle 320 to which the blood of the subject has adhered, and the inner needle 320 can be discarded easily and safely.

それでいて、内針320を抜去するために必要な力Cと、圧縮状態のカバー部材340から内針320に作用している力Dとが、「C>D」を満足している。このため、作業者の意図に関係なくカバー部材340の弾発力により内針320が抜去されるようなことはない。   Nevertheless, the force C required to remove the inner needle 320 and the force D acting on the inner needle 320 from the compressed cover member 340 satisfy “C> D”. For this reason, the inner needle 320 is not pulled out by the elastic force of the cover member 340 regardless of the operator's intention.

しかも、内針320は前端のみ硬質な針本体321で大部分は柔軟なガイドワイヤ322で形成されており、この内針320の全体が柔軟なカバー部材340に収容される。このため、例えば、この収容状態でカバー部材340とともに内針320のガイドワイヤ322を巻回して廃棄するようなことも可能である(図示せず)。   Moreover, the inner needle 320 is formed of a hard needle body 321 only at the front end and most of the inner needle 320 is formed of a flexible guide wire 322, and the entire inner needle 320 is accommodated in the flexible cover member 340. For this reason, for example, the guide wire 322 of the inner needle 320 can be wound together with the cover member 340 in this accommodated state and discarded (not shown).

なお、本発明は上記形態に限定されるものではなく、その要旨を逸脱しない範囲で各種の変形を許容する。例えば、上記形態では凹面部材360の開口したままの貫通孔361が密閉部材370のみで内側から密閉されることを例示した。   In addition, this invention is not limited to the said form, A various deformation | transformation is accept | permitted in the range which does not deviate from the summary. For example, in the above embodiment, the through-hole 361 of the concave surface member 360 that is opened is sealed from the inside only by the sealing member 370.

しかし、留置針300を使用している現場などでは、外針310が血管に適正に穿刺されていることを確認するため、薬液に負圧を印加することがある。この場合、上述の構造では、負圧により密閉部材370が凹面部材360から剥離し、貫通孔361から薬液に気泡が混入する懸念がある。   However, at a site where the indwelling needle 300 is used, a negative pressure may be applied to the drug solution in order to confirm that the outer needle 310 is properly punctured into the blood vessel. In this case, in the above-described structure, there is a concern that the sealing member 370 is peeled off from the concave member 360 due to the negative pressure, and bubbles are mixed into the chemical liquid from the through hole 361.

そこで、これが問題となる場合には、従来の留置針と同様に、凹面部材の貫通孔を弾性により密閉させることがよい(図示せず)。この場合、上述のような薬液の負圧は、当然ながら一気圧以下なので凹面部材の弾性で充分に遮断することができ、注入される薬液の高圧は密閉部材により遮断することができる。   Therefore, when this becomes a problem, it is preferable to seal the through hole of the concave member with elasticity (not shown) as in the case of the conventional indwelling needle. In this case, since the negative pressure of the chemical solution as described above is naturally less than one atmospheric pressure, it can be sufficiently blocked by the elasticity of the concave member, and the high pressure of the injected chemical solution can be blocked by the sealing member.

また、上記形態では係合部材363が凹面部材360と一体に形成されていることにより留置針300の生産性が良好であることを例示した。しかし、係合部材が凹面部材とは別個の部品として形成されていてもよく、管状本体332と一体に形成されていてもよい(ともに図示せず)。   In the above embodiment, the productivity of the indwelling needle 300 is good because the engaging member 363 is formed integrally with the concave member 360. However, the engaging member may be formed as a separate part from the concave member, or may be formed integrally with the tubular body 332 (both not shown).

さらに、上記形態では大径の球形の密閉部材370に内針320が貫通されていることを例示した。しかし、図6に例示する留置針500のように、小径の球形の密閉部材501が、内針320の外周面と管状部材330の内周面との間隙に配置されていてもよい。   Furthermore, in the said form, it illustrated that the inner needle 320 was penetrated by the large diameter spherical sealing member 370. FIG. However, as in the indwelling needle 500 illustrated in FIG. 6, a small-diameter spherical sealing member 501 may be disposed in the gap between the outer peripheral surface of the inner needle 320 and the inner peripheral surface of the tubular member 330.

この留置針500では、内針320が抜去されると、やはり密閉部材501が凹面部材502の円錐凹面362に密着する。なお、密閉部材501には、内針320が貫通される貫通孔がない。このため、凹面部材502の貫通孔361を確実に密閉することができ、凹面部材502などに係合部材を形成しておく必要もない。   In the indwelling needle 500, when the inner needle 320 is removed, the sealing member 501 is also in close contact with the conical concave surface 362 of the concave surface member 502. The sealing member 501 does not have a through hole through which the inner needle 320 passes. For this reason, the through-hole 361 of the concave member 502 can be reliably sealed, and there is no need to form an engaging member on the concave member 502 or the like.

また、図7に例示する留置針510のように、密閉部材511は、凹面部材502の円錐凹面362に密着する円錐凸面512に後面が形成されており、その円錐凸面512が円錐凹面362に密着した状態で、凹面部材502の貫通孔361と連通しない位置に内針320が貫通されていてもよい。   Further, like the indwelling needle 510 illustrated in FIG. 7, the sealing member 511 has a conical convex surface 512 that is in close contact with the conical concave surface 362 of the concave surface member 502, and the conical convex surface 512 is in close contact with the conical concave surface 362. In this state, the inner needle 320 may be penetrated at a position where the concave member 502 does not communicate with the through hole 361.

この場合も、密閉部材511と凹面部材502との貫通孔533,361が連通しないので、密閉部材511により凹面部材502の貫通孔361を確実に密閉することができる。   Also in this case, since the through holes 533 and 361 between the sealing member 511 and the concave member 502 do not communicate with each other, the sealing member 511 can reliably seal the through hole 361 of the concave member 502.

さらに、図8に例示する留置針520のように、密閉部材521は、凹面部材502の円錐凹面362に密着する円錐凸面522に後面が形成されており、内針320が貫通されている貫通孔523が弾発的に閉止されてもよい。   Furthermore, like the indwelling needle 520 illustrated in FIG. 8, the sealing member 521 has a conical convex surface 522 that is in close contact with the conical concave surface 362 of the concave surface member 502, and a through-hole through which the inner needle 320 passes. 523 may be closed resiliently.

この場合、内針320が抜去された密閉部材521の貫通孔523は弾性により閉止される。ただし、その密閉部材521の円錐凸面522が凹面部材502の円錐凹面362と密着するので、薬液の圧力が密閉部材521の貫通孔523を閉止するように作用する。   In this case, the through hole 523 of the sealing member 521 from which the inner needle 320 has been removed is closed by elasticity. However, since the conical convex surface 522 of the sealing member 521 is in close contact with the conical concave surface 362 of the concave member 502, the pressure of the chemical solution acts to close the through hole 523 of the sealing member 521.

このため、単純に弾性のみで貫通孔を閉止していた従来の製品とは相違して、高圧の薬液を良好に密閉することができる。なお、図示するように、密閉部材521の円錐凸面522を凹面部材502の円錐凹面362より先鋭に形成しておくことにより、より良好に貫通孔523を閉止させることもできる。   For this reason, unlike the conventional product which simply closed the through hole only by elasticity, the high-pressure chemical solution can be satisfactorily sealed. As shown in the figure, the through-hole 523 can be closed more favorably by forming the conical convex surface 522 of the sealing member 521 sharper than the conical concave surface 362 of the concave member 502.

また、図9に例示する留置針530のように、上述の密閉部材521と同様な形状の密閉部材531の前面が、貫通孔533を中心とした円錐凸面532に形成されていてもよい。   Further, like the indwelling needle 530 illustrated in FIG. 9, the front surface of the sealing member 531 having the same shape as the above-described sealing member 521 may be formed on the conical convex surface 532 with the through hole 533 as the center.

この場合、円錐凸面532に作用する薬液の圧力が、貫通孔533を閉止するように密閉部材531に作用する。このため、密閉部材531の貫通孔533を経由して薬液が漏出することを、より良好に防止することができる。   In this case, the pressure of the chemical solution acting on the conical convex surface 532 acts on the sealing member 531 so as to close the through hole 533. For this reason, it can prevent more favorably that a chemical | medical solution leaks through the through-hole 533 of the sealing member 531. FIG.

さらに、上記形態では管状部材330の管状本体332の内部に密閉部材370が単純に収容されていることを例示した。しかし、これでは密閉部材370が分岐管部335から流入する流体のために前方に移動し、チューブ部材331などを閉止する懸念もある。   Furthermore, in the said form, it illustrated that the sealing member 370 was simply accommodated in the inside of the tubular main body 332 of the tubular member 330. FIG. However, there is a concern that the sealing member 370 moves forward due to the fluid flowing in from the branch pipe portion 335 and closes the tube member 331 and the like.

そこで、これが問題となる場合には、図10に例示する留置針540のように、管状部材541の管状本体542は、分岐管部335が分岐している位置より後方で密閉部材370が配置されている位置より前方の内周面にストッパ部543が形成されており、このストッパ部543は、密閉部材370より小径で内針320が挿通されている貫通孔544が形成されている構造としてもよい。   Therefore, when this becomes a problem, the sealing member 370 is disposed on the tubular body 542 of the tubular member 541 behind the position where the branch pipe portion 335 is branched, like the indwelling needle 540 illustrated in FIG. A stopper portion 543 is formed on the inner peripheral surface in front of the position where the inner needle 320 is inserted. The stopper portion 543 has a smaller diameter than the sealing member 370 and a through hole 544 into which the inner needle 320 is inserted. Good.

この場合、密閉部材370が分岐管部335から流入する流体のために前方に移動してチューブ部材331などを閉止することがない。このため、より確実に留置針540を利用することができる。   In this case, the sealing member 370 does not move forward due to the fluid flowing in from the branch pipe portion 335 to close the tube member 331 or the like. For this reason, the indwelling needle 540 can be utilized more reliably.

また、上記形態では内針320の後端のノブ状部341が単純な円柱状に形成されていることを例示した。しかし、図10に例示する留置針540のように、内針551の後端に形成されている円柱状のノブ状部552の外周面の前端と後端とに円環状の凸部553,554が形成されていてもよい。この場合、より確実にノブ状部552を手指により把持することができる。   Moreover, in the said form, it illustrated that the knob-shaped part 341 of the rear end of the inner needle 320 was formed in the simple column shape. However, like the indwelling needle 540 illustrated in FIG. 10, the annular convex portions 553 and 554 are formed at the front end and the rear end of the outer peripheral surface of the cylindrical knob-shaped portion 552 formed at the rear end of the inner needle 551. May be formed. In this case, the knob-like portion 552 can be gripped with fingers more reliably.

さらに、管状部材541は、後方ほど拡開した円錐状の凹部556が後面に形成されており、内針551のノブ状部552の前端に形成されている円錐状の凸部555が、管状部材541の凹部556に係脱自在に係合してもよい。この場合、ノブ状部552が管状部材541の後部に適正に配置され、内針551のガイドワイヤ322が無用に曲折されて破断されることなどを防止できる。   Further, the tubular member 541 has a conical concave portion 556 that expands toward the rear, and is formed on the rear surface. The conical convex portion 555 formed at the front end of the knob-shaped portion 552 of the inner needle 551 is a tubular member. You may engage with the recessed part 556 of 541 removably. In this case, the knob-like portion 552 is appropriately disposed at the rear portion of the tubular member 541, and the guide wire 322 of the inner needle 551 can be prevented from being bent and broken unnecessarily.

また、図10および図11に例示する留置針540のように、管状部材541は、別体の延長チューブ600が着脱自在に連結される連結機構が後端部に形成されていてもよい。   Further, like the indwelling needle 540 illustrated in FIGS. 10 and 11, the tubular member 541 may be formed with a connecting mechanism for detachably connecting a separate extension tube 600 at the rear end portion.

より具体的には、延長チューブ600は、図11に示すように、柔軟なチューブ部材610の先端に円筒状の雌ネジ部材620が装着されている。管状部材541は、連結機構として雌ネジ部材620が係脱自在に螺合される雄ネジ部571が後端部の外周面に形成されている。   More specifically, as shown in FIG. 11, the extension tube 600 has a cylindrical female screw member 620 attached to the tip of a flexible tube member 610. The tubular member 541 has a male screw portion 571 formed on the outer peripheral surface of the rear end portion thereof so that the female screw member 620 is removably engaged as a connecting mechanism.

この場合、人体に穿刺された留置針540に、延長チューブ600を連結することができる。このため、留置針540に延長チューブ350とは別個に延長チューブ600から薬液を注入することができる。従って、必要により本来の薬液とは相違する薬液を追加して人体に注入するようなことができる。   In this case, the extension tube 600 can be connected to the indwelling needle 540 punctured by the human body. For this reason, the chemical solution can be injected into the indwelling needle 540 from the extension tube 600 separately from the extension tube 350. Therefore, if necessary, a chemical solution different from the original chemical solution can be added and injected into the human body.

なお、上述の留置針540では、管状部材541の後端の開口孔は、薬液の圧力により密閉部材370で内側から密閉される。このため、図11(b)に示すように、上述のように管状部材541の後端に延長チューブ600を連結して薬液を圧入すれば、密閉部材370による密閉を自動的に解除することができる。この場合、前述のように密閉部材370が前方に移動してチューブ部材331などを閉止することを、管状部材541のストッパ部543で防止しておくことがよい。   In the indwelling needle 540 described above, the opening hole at the rear end of the tubular member 541 is sealed from the inside by the sealing member 370 by the pressure of the chemical solution. For this reason, as shown in FIG. 11B, when the extension tube 600 is connected to the rear end of the tubular member 541 as described above and the chemical solution is press-fitted, the sealing by the sealing member 370 can be automatically released. it can. In this case, it is preferable that the stopper member 543 of the tubular member 541 prevent the sealing member 370 from moving forward and closing the tube member 331 and the like as described above.

上述のような延長チューブ600が留置針540の管状部材541の後端から分離されると、図11(a)に示すように、管状部材541の後端の開口孔は密閉部材370で内側から薬液の圧力により自動的に再度密閉される。このため、延長チューブ350から薬液を高圧に注入することができる。   When the extension tube 600 as described above is separated from the rear end of the tubular member 541 of the indwelling needle 540, the opening hole at the rear end of the tubular member 541 is opened from the inside by a sealing member 370 as shown in FIG. It is automatically sealed again by the pressure of the chemical solution. For this reason, a chemical | medical solution can be inject | poured into the high pressure from the extension tube 350. FIG.

なお、上述のような延長チューブ600の雌ネジ部材620は、医療用の規格部品として一般的である。換言すると、一般的な規格部品の雌ネジ部材620が螺合される形状に留置針540の管状部材541の後端を形成しておくことがよい。さらに、前述の内針551のノブ状部552の凸部555も、このような管状部材541の凹部556に対応した形状に形成しておくことがよい。   The female screw member 620 of the extension tube 600 as described above is generally used as a medical standard part. In other words, it is preferable to form the rear end of the tubular member 541 of the indwelling needle 540 in a shape in which a female screw member 620 of a general standard part is screwed. Further, the convex portion 555 of the knob-shaped portion 552 of the inner needle 551 is preferably formed in a shape corresponding to the concave portion 556 of the tubular member 541.

さらに、上記形態では管状部材330の柔軟なチューブ部材331に柔軟な外針310が連結されており、そこに内針320の硬質な針本体321が挿入されていることにより、この針本体321で支持されているチューブ部材331を把持して内針320を人体に穿刺することを例示した。   Further, in the above embodiment, the flexible outer needle 310 is connected to the flexible tube member 331 of the tubular member 330, and the hard needle body 321 of the inner needle 320 is inserted therein. An example of grasping the supported tube member 331 and piercing the human body with the inner needle 320 is illustrated.

しかし、図10に例示する留置針540のように、外針310の後端外周およびチューブ部材331の前端外周に、後方ほど拡開した円錐状に外周面が形成されているハンドル部561が装着されていてもよい。この場合、内針551の針本体321で支持されている外針310を、ハンドル部561を把持することで人体に容易に穿刺することができる。   However, like the indwelling needle 540 illustrated in FIG. 10, a handle portion 561 whose outer peripheral surface is formed in a conical shape that expands toward the rear is attached to the outer periphery of the rear end of the outer needle 310 and the outer periphery of the front end of the tube member 331. May be. In this case, the outer needle 310 supported by the needle body 321 of the inner needle 551 can be easily punctured into the human body by grasping the handle portion 561.

また、上述のハンドル部561は、外周面の前端から後端まで複数の円環状の凸部562が連続的に形成されていてもよい。この場合、より確実に手指でハンドル部561を把持することができる。このため、さらに容易に外針310を人体に穿刺することができる。   Moreover, the above-mentioned handle | steering-wheel part 561 may be formed with the some annular convex part 562 continuously from the front end of an outer peripheral surface to a rear end. In this case, the handle portion 561 can be gripped with fingers more reliably. For this reason, the outer needle 310 can be punctured into the human body more easily.

さらに、上記形態では外針310および管状部材330から抜去された内針320が蛇腹構造のカバー部材340に収容されることを例示した。しかし、図12に示すように、抜去された内針320が硬質なカバーユニット700に収容されてもよい。   Furthermore, in the said form, it illustrated that the inner needle 320 extracted from the outer needle 310 and the tubular member 330 was accommodated in the cover member 340 of a bellows structure. However, as shown in FIG. 12, the extracted inner needle 320 may be accommodated in a hard cover unit 700.

より具体的には、このカバーユニット700は、前後方向に細長い硬質なユニット本体710を有する。このユニット本体710は、例えば、前端に一体に形成されている雌ネジ部713により、管状部材541の後端に着脱自在に装着されている。   More specifically, the cover unit 700 has a rigid unit body 710 elongated in the front-rear direction. The unit main body 710 is detachably attached to the rear end of the tubular member 541 by, for example, a female screw portion 713 formed integrally with the front end.

ユニット本体710には、スライダ部材720が前後方向にスライド自在に装着されている。このスライダ部材720は、後面が半円形に湾曲した巻回部721と、手指で操作される操作部722と、が形成されている。   A slider member 720 is mounted on the unit main body 710 so as to be slidable in the front-rear direction. The slider member 720 is formed with a winding part 721 whose rear surface is curved in a semicircular shape and an operation part 722 operated by a finger.

ユニット本体710には前後方向に細長い内部空間711が形成されており、そこにスライダ部材720の巻回部721が位置している。内針320は、ガイドワイヤ322の後端がユニット本体710の内部空間711の前端に固定されている。   The unit main body 710 is formed with an inner space 711 that is elongated in the front-rear direction, and the winding portion 721 of the slider member 720 is located there. In the inner needle 320, the rear end of the guide wire 322 is fixed to the front end of the internal space 711 of the unit main body 710.

このガイドワイヤ322は、スライダ部材720の巻回部721に巻回されてユニット本体710の前端から管状部材541の内部に位置している。なお、ユニット本体710は、内針320の針本体321およびガイドワイヤ322と同等以上の前後長に内部空間711が形成されている。   The guide wire 322 is wound around the winding portion 721 of the slider member 720 and is located inside the tubular member 541 from the front end of the unit main body 710. The unit main body 710 has an internal space 711 with a front and rear length equal to or greater than that of the needle main body 321 and the guide wire 322 of the inner needle 320.

上述のようなカバーユニット700を有する留置針(図示せず)では、図12(a)に示すように、初期状態ではスライダ部材720が前端に配置された状態のカバーユニット700が管状部材541の後端に装着されている。   In the indwelling needle (not shown) having the cover unit 700 as described above, the cover unit 700 with the slider member 720 disposed at the front end in the initial state is the tubular member 541 as shown in FIG. At the rear end.

このような状態で、作業者は内針320とともに外針310を被験者に穿刺してから、例えば、カバーユニット700のスライダ部材720を後端までスライド移動させる。すると、図12(b)に示すように、内針320の全体がカバーユニット700の内部に収容される。   In this state, the operator punctures the subject with the inner needle 320 and the outer needle 310, and then slides the slider member 720 of the cover unit 700 to the rear end, for example. Then, as shown in FIG. 12 (b), the entire inner needle 320 is accommodated in the cover unit 700.

そこで、このカバーユニット700を管状部材541から分離して廃棄する。この場合、内針320の全体がカバーユニット700に収容されているので、安全に内針320を廃棄することができる。   Therefore, the cover unit 700 is separated from the tubular member 541 and discarded. In this case, since the entire inner needle 320 is accommodated in the cover unit 700, the inner needle 320 can be safely discarded.

しかも、カバーユニット700の全長を内針320の全長の半分程度とすることができる。このため、留置針の全体を小型化することができ、内針320とともに廃棄するカバーユニット700の全体も小型とすることができる。   Moreover, the total length of the cover unit 700 can be about half of the total length of the inner needle 320. For this reason, the whole indwelling needle can be reduced in size, and the whole cover unit 700 discarded together with the inner needle 320 can also be reduced in size.

また、上記形態では留置針300を利用するとき、必要な各種データを作業者が薬液注入装置100に手作業で入力操作することを想定した。しかし、そのような各種データが記録されているRFIDチップを留置針に搭載しておくとともに、その各種データを読み取るRFIDリーダを薬液注入装置に搭載しておいてもよい(図示せず)。   Moreover, in the said form, when using the indwelling needle 300, it assumed that an operator inputs operation required various data into the chemical injection device 100 manually. However, an RFID chip in which such various data is recorded may be mounted on the indwelling needle, and an RFID reader that reads the various data may be mounted on the chemical solution injector (not shown).

この場合、留置針のRFIDチップの記録データを薬液注入装置のRFIDリーダに取得させることにより、留置針の利用に必要な各種データを簡単かつ確実に薬液注入装置に入力することができる。   In this case, by making the RFID reader of the chemical liquid injector acquire the recording data of the RFID chip of the indwelling needle, various data necessary for using the indwelling needle can be easily and reliably input to the chemical liquid injector.

例えば、留置針の耐圧をRFIDチップに記録しておけば、薬液注入装置は、留置針300ごとに相違する耐圧を自動的に取得することができる。この場合、その耐圧を超過しないように注入する薬液の圧力を制御することができる。従って、留置針の内針が抜去された貫通孔から薬液が漏出することを有効に防止でき、留置針が異常な高圧により破壊されることも防止できる。   For example, if the pressure resistance of the indwelling needle is recorded on the RFID chip, the chemical liquid injector can automatically acquire the pressure resistance that differs for each indwelling needle 300. In this case, the pressure of the chemical solution to be injected can be controlled so as not to exceed the pressure resistance. Therefore, it is possible to effectively prevent the chemical solution from leaking from the through-hole from which the inner needle of the indwelling needle has been removed, and it is possible to prevent the indwelling needle from being broken by an abnormal high pressure.

さらに、上述のようなRFIDチップが、周囲の環境を検出する環境センサと、検出された環境を記録するデータ記憶部と、を有してもよい。このようなRFIDチップは血液パック用に実用化されており、温度、湿度、振動、圧力、を記録することができる。   Furthermore, the RFID chip as described above may include an environmental sensor that detects the surrounding environment and a data storage unit that records the detected environment. Such an RFID chip has been put into practical use for a blood pack, and can record temperature, humidity, vibration, and pressure.

この場合、薬液注入装置は、留置針から環境の履歴を取得し、その履歴が所定条件を逸脱しているとシリンジ駆動機構を作動させない。従って、前述のように生理食塩水が事前に封入されている留置針の場合、温度変化などのために劣化した生理食塩水が注入されることを防止できる。   In this case, the chemical liquid injector acquires the history of the environment from the indwelling needle, and does not operate the syringe drive mechanism when the history deviates from a predetermined condition. Therefore, in the case of an indwelling needle in which physiological saline is sealed in advance as described above, it is possible to prevent injection of physiological saline that has deteriorated due to a temperature change or the like.

また、上述のようなRFIDチップを前述したカバーユニット700に装着しておいてもよい(図示せず)。その場合、RFIDチップとしてチップ本体とアンテナ部とが分離される製品を利用し、そのチップ本体とアンテナ部とをユニット本体710とスライダ部材720とに装着しておいてもよい。   Further, the RFID chip as described above may be mounted on the cover unit 700 described above (not shown). In that case, a product in which the chip body and the antenna unit are separated may be used as the RFID chip, and the chip body and the antenna unit may be attached to the unit body 710 and the slider member 720.

この場合、図12(a)に示すように、カバーユニット700のスライダ部材720がユニット本体710の前端に位置する初期状態では、RFIDチップのチップ本体とアンテナ部とが接続されている。   In this case, as shown in FIG. 12A, in the initial state where the slider member 720 of the cover unit 700 is located at the front end of the unit body 710, the chip body of the RFID chip and the antenna unit are connected.

この場合、RFIDチップは所定の長距離まで無線通信できるので、薬液注入装置はRFIDリーダにより留置針から耐圧などの各種データを取得して注入動作に利用することができる。   In this case, since the RFID chip can communicate wirelessly up to a predetermined long distance, the chemical injection device can acquire various data such as pressure resistance from the indwelling needle by the RFID reader and use it for the injection operation.

そして、カバーユニット700のスライダ部材720がユニット本体710の後端にスライド移動されると、RFIDチップのチップ本体とアンテナ部とが分離される。すると、RFIDチップの通信距離は極端に短縮される。   When the slider member 720 of the cover unit 700 is slid to the rear end of the unit main body 710, the chip main body of the RFID chip and the antenna portion are separated. Then, the communication distance of the RFID chip is extremely shortened.

そこで、薬液注入装置はRFIDリーダによりRFIDチップを検出できるときには注入動作を実行しないことにより、留置針の準備が完了していない状態で注入動作が開始されることを防止できる。   Therefore, the chemical injection device can prevent the injection operation from being started in the state where the preparation of the indwelling needle is not completed by not performing the injection operation when the RFID chip can be detected by the RFID reader.

なお、上述のようなRFIDチップのチップ本体とアンテナ部とをユニット本体710とスライダ部材720とに装着しておき、スライダ部材720がユニット本体710の前端に位置する初期状態ではチップ本体とアンテナ部とを分離させておき、スライダ部材720がユニット本体710の後端にスライド移動されたときにチップ本体とアンテナ部とを接続してもよい。   Note that the chip main body and antenna portion of the RFID chip as described above are mounted on the unit main body 710 and the slider member 720, and in the initial state where the slider member 720 is located at the front end of the unit main body 710, the chip main body and the antenna portion. And the chip body and the antenna unit may be connected when the slider member 720 is slid to the rear end of the unit body 710.

この場合は、薬液注入装置はRFIDリーダによりRFIDチップを検出するまで注入動作を実行しないことにより、留置針の準備が完了していない状態で注入動作が開始されることを防止できる。   In this case, the chemical injection device does not execute the injection operation until the RFID chip is detected by the RFID reader, thereby preventing the injection operation from being started in a state where the preparation of the indwelling needle is not completed.

また、上記形態では留置針300の延長チューブ350の末端が二股構造に形成されていて造影および生食シリンジ200C,200Pが同時に個々に装着されることを例示した。   In the above embodiment, the end of the extension tube 350 of the indwelling needle 300 has a bifurcated structure, and the contrast and saline syringes 200C and 200P are individually attached at the same time.

しかし、例えば、末端が一つで造影および生食シリンジ200C,200Pの一方のみ装着されることや、末端が三つ以上で三種類以上の薬液シリンジが装着されることも可能である(図示せず)。   However, for example, it is possible to attach only one of the contrast and saline syringes 200C and 200P with one end, or to attach three or more kinds of chemical syringes with three or more ends (not shown). ).

なお、上述のように末端が一つの留置針300に造影シリンジ200Cが装着される場合、その留置針300に薬液として造影剤を事前に充填しておくことも可能である(図示せず)。   In addition, when the contrast syringe 200C is attached to the indwelling needle 300 having one end as described above, the indwelling needle 300 may be preliminarily filled with a contrast medium as a chemical solution (not shown).

さらに、上記形態では留置針300の延長チューブ350の二股の末端に別体の造影および生食シリンジ200C,200Pを着脱自在に装着することを例示した。しかし、例えば、延長チューブ350の末端に造影および生食シリンジ200C,200Pが一体に装着されている留置針300(図示せず)なども可能である。   Furthermore, in the above-described embodiment, it is exemplified that the separate imaging and saline syringes 200C and 200P are detachably attached to the bifurcated ends of the extension tube 350 of the indwelling needle 300. However, for example, an indwelling needle 300 (not shown) in which the contrast and saline syringes 200C and 200P are integrally attached to the end of the extension tube 350 is also possible.

一方、上記形態では留置針300の管状部材330に延長チューブ350が一体に連結されていることを例示した。しかし、別体の延長チューブ350が管状部材330に連結される留置針(図示せず)なども可能である。   On the other hand, in the above embodiment, the extension tube 350 is integrally connected to the tubular member 330 of the indwelling needle 300. However, an indwelling needle (not shown) in which a separate extension tube 350 is connected to the tubular member 330 is also possible.

また、上記形態では管状部材330が柔軟なチューブ部材331と硬質な管状本体332で形成されていることを例示した。しかし、管状部材が硬質な管状本体のみで形成されていてもよい(図示せず)。   Moreover, in the said form, it illustrated that the tubular member 330 was formed with the flexible tube member 331 and the rigid tubular main body 332. However, the tubular member may be formed of only a rigid tubular body (not shown).

同様に、上記形態では内針320が硬質な針本体321と柔軟なガイドワイヤ322で形成されていることを例示した。しかし、内針が硬質な針本体のみで形成されていてもよい(図示せず)。さらに、上記形態では内針320が管状に形成されていることを例示した。しかし、例えば、内針320が、いわゆるムクの針として形成されていてもよい。   Similarly, in the above embodiment, the inner needle 320 is illustrated as being formed of a hard needle body 321 and a flexible guide wire 322. However, the inner needle may be formed of only a hard needle body (not shown). Furthermore, in the said form, it illustrated that the inner needle 320 was formed in the tubular shape. However, for example, the inner needle 320 may be formed as a so-called muku needle.

本発明の薬液注入用具の実施の形態である留置針の内部構造を示す模式的な縦断側面図である。It is a typical vertical side view which shows the internal structure of the indwelling needle which is embodiment of the chemical | medical solution injection tool of this invention. 留置針と薬液容器である薬液シリンジと薬液注入装置の注入ヘッドとの連結関係を示す分解斜視図である。It is a disassembled perspective view which shows the connection relation of the indwelling needle, the chemical | medical solution syringe which is a chemical | medical solution container, and the injection | pouring head of a chemical | medical solution injection apparatus. 薬液注入装置の外観を示す斜視図である。It is a perspective view which shows the external appearance of a chemical injection device. 薬液注入システムの外観を示す斜視図である。It is a perspective view which shows the external appearance of a chemical injection system. 留置針の要部の内部構造を示す模式的な縦断側面図である。It is a typical vertical side view which shows the internal structure of the principal part of an indwelling needle. 一変形例の留置針の要部の内部構造を示す模式的な縦断側面図である。It is a typical vertical side view which shows the internal structure of the principal part of the indwelling needle of one modification. 他の変形例の留置針の要部の内部構造を示す模式的な縦断側面図である。It is a typical vertical side view which shows the internal structure of the principal part of the indwelling needle of another modification. さらに他の変形例の留置針の要部の内部構造を示す模式的な縦断側面図である。It is a typical vertical side view which shows the internal structure of the principal part of the indwelling needle of another modification. さらに他の変形例の留置針の要部の内部構造を示す模式的な縦断側面図である。It is a typical vertical side view which shows the internal structure of the principal part of the indwelling needle of another modification. さらに他の変形例の留置針の全体構造を示す模式的な縦断側面図である。It is a typical vertical side view which shows the whole structure of the indwelling needle of another modification. さらに他の変形例の留置針の全体構造を示す模式的な縦断側面図である。It is a typical vertical side view which shows the whole structure of the indwelling needle of another modification. さらに他の変形例の留置針の要部の内部構造を示す模式的な縦断側面図である。It is a typical vertical side view which shows the internal structure of the principal part of the indwelling needle of another modification. 一従来例の留置針の内部構造を示す縦断側面図である。It is a vertical side view which shows the internal structure of the indwelling needle of one prior art example.

符号の説明Explanation of symbols

10 留置針
11 外針
12 内針
13 管状部材
14 パッキン
16 ノブ状部
17 延長チューブ
18 ジョイント
100 薬液注入装置
101 注入制御ユニット
102 通信ケーブル
103 操作パネル
104 タッチパネル
105 スピーカユニット
106 本体ハウジング
107 コントローラユニット
108 接続コネクタ
110 注入ヘッド
111 キャスタスタンド
112 可動アーム
113 ヘッド本体
114 凹部
116 シリンダ保持機構
117 シリンジ駆動機構
117C 造影注入機構
117P 生食注入機構
200 薬液シリンジ
200C 造影シリンジ
200P 生食シリンジ
210 シリンダ部材
211 本体部
212 導管部
213 シリンダフランジ
220 ピストン部材
221 ピストンフランジ
300 留置針
310 外針
320 内針
321 針本体
322 ガイドワイヤ
323 流路
324 開口
330 管状部材
331 チューブ部材
332 管状本体
335 分岐管部
340 カバー部材
341 ノブ状部
342 前端部分
343 蛇腹部分
350 延長チューブ
351 ジョイント
360 凹面部材
361 貫通孔
362 円錐凹面
363 係合部材
370 密閉部材
371 貫通孔
400 MRI装置
401 透視撮像ユニット
402 撮像制御ユニット
500 留置針
501 密閉部材
502 凹面部材
510 留置針
511 密閉部材
512 円錐凸面
520 留置針
521 密閉部材
522 円錐凸面
523 貫通孔
530 留置針
531 密閉部材
532 円錐凸面
533 貫通孔
540 留置針
541 管状部材
542 管状本体
543 ストッパ部
544 貫通孔
551 内針
552 ノブ状部
553,554 凸部
555 凸部
556 凹部
561 ハンドル部
562 凸部
571 雄ネジ部
600 延長チューブ
610 チューブ部材
620 雌ネジ部材
700 カバーユニット
710 ユニット本体
711 内部空間
713 雌ネジ部
720 スライダ部材
721 巻回部
722 操作部
1000 薬液注入システム
DESCRIPTION OF SYMBOLS 10 Indwelling needle 11 Outer needle 12 Inner needle 13 Tubular member 14 Packing 16 Knob-shaped part 17 Extension tube 18 Joint 100 Chemical injection device 101 Injection control unit 102 Communication cable 103 Operation panel 104 Touch panel 105 Speaker unit 106 Main body housing 107 Controller unit 108 Connection Connector 110 Injection head 111 Caster stand 112 Movable arm 113 Head main body 114 Recess 116 Cylinder holding mechanism 117 Syringe drive mechanism 117C Contrast injection mechanism 117P Saline injection mechanism 200 Chemical liquid syringe 200C Contrast syringe 200P Saline syringe 210 Cylinder member 211 Main body part 212 Conduit part 213 Cylinder flange 220 Piston member 221 Piston flange 300 Indwelling needle 310 Outer needle 320 inner needle 321 needle body 322 guide wire 323 flow path 324 opening 330 tubular member 331 tube member 332 tubular body 335 branch pipe portion 340 cover member 341 knob-like portion 342 front end portion 343 bellows portion 350 extension tube 351 joint 360 concave surface member 361 Hole 362 Conical concave surface 363 Engaging member 370 Sealing member 371 Through hole 400 MRI apparatus 401 Fluoroscopic imaging unit 402 Imaging control unit 500 Indwelling needle 501 Sealing member 502 Concave surface member 510 Indwelling needle 511 Sealing member 512 Conical convex surface 520 Indwelling needle 521 Sealing member 521 Conical convex surface 523 Through hole 530 Indwelling needle 531 Sealing member 532 Conical convex surface 533 Through hole 540 Indwelling needle 541 Tubular member 542 Tubular body 543 Stopper 544 Through hole 55 Inner needle 552 Knob-shaped part 553, 554 Protruding part 555 Protruding part 556 Concave part 561 Handle part 562 Convex part 571 Male thread part 600 Extension tube 610 Tube member 620 Female thread member 700 Cover unit 710 Unit body 711 Internal space 713 Female thread part 720 Slider member 721 Winding part 722 Operation part 1000 Chemical solution injection system

Claims (20)

被験者の血管に薬液を注入するための薬液注入用具であって、
前記血管の内部に少なくとも前部が留置される柔軟な中空の外針と、
少なくとも前記外針の内部に挿入されていて前記血管に穿刺される前部が硬質な内針と、
前記外針の後端が前端開口に一体に連結されているとともに後端開口から前記内針の後部が突出している管状部材と、
前記内針が挿通されている貫通孔を中心とした円錐凹面に前面が形成されていて前記管状部材の内部後端に配置されている凹面部材と、
前記管状部材の内部で前記凹面部材より前方に配置されていて前記内針が抜去されると前記円錐凹面に密着する密閉部材と、
を有する薬液注入用具。
A drug solution injection tool for injecting a drug solution into a blood vessel of a subject,
A flexible hollow outer needle having at least an anterior part indwelled inside the blood vessel;
An inner needle that is inserted into at least the inside of the outer needle and has a hard front portion to be punctured by the blood vessel;
A tubular member in which a rear end of the outer needle is integrally connected to a front end opening and a rear portion of the inner needle protrudes from a rear end opening;
A concave surface member having a front surface formed on a conical concave surface centering on a through-hole through which the inner needle is inserted and disposed at an inner rear end of the tubular member;
A sealing member that is disposed in front of the concave member inside the tubular member and is in close contact with the conical concave surface when the inner needle is removed;
A drug solution injection tool having
前記密閉部材は、球形に形成されていて前記内針が貫通されている請求項1に記載の薬液注入用具。   The medical solution injection tool according to claim 1, wherein the sealing member is formed in a spherical shape and the inner needle is penetrated. 前記内針が貫通されている前記密閉部材を前記凹面部材の前記円錐凹面から離間した位置に保持するとともに前記内針が抜去されて前記凹面部材の前記円錐凹面まで移動する前記密閉部材を回動させる係合部材を、さらに有する請求項2に記載の薬液注入用具。   The sealing member through which the inner needle is penetrated is held at a position away from the conical concave surface of the concave member, and the inner member is removed and moved to the conical concave surface of the concave member. The drug solution injection tool according to claim 2, further comprising an engaging member to be moved. 前記係合部材が前記凹面部材と一体に形成されている請求項3に記載の薬液注入用具。   The chemical | medical solution injection tool of Claim 3 with which the said engaging member is integrally formed with the said concave surface member. 前記密閉部材は、球形に形成されていて前記内針の外周面と前記管状部材の内周面との間隙に配置されている請求項1に記載の薬液注入用具。   2. The drug solution injector according to claim 1, wherein the sealing member is formed in a spherical shape and disposed in a gap between an outer peripheral surface of the inner needle and an inner peripheral surface of the tubular member. 前記密閉部材は、前記凹面部材の前記円錐凹面に密着する円錐凸面に後面が形成されており、前記円錐凸面が前記円錐凹面に密着した状態で前記凹面部材の貫通孔と連通しない位置に前記内針が貫通されている請求項1に記載の薬液注入用具。   The sealing member has a conical convex surface that is in close contact with the conical concave surface of the concave member, and the inner surface is located at a position that does not communicate with the through hole of the concave member when the conical convex surface is in close contact with the conical concave surface. The drug solution injection tool according to claim 1, wherein the needle is penetrated. 前記密閉部材は、前記凹面部材の前記円錐凹面に密着する円錐凸面に後面が形成されており、前記内針が貫通されている貫通孔が弾発的に閉止される請求項1に記載の薬液注入用具。   2. The chemical solution according to claim 1, wherein the sealing member has a rear surface formed on a conical convex surface closely contacting the conical concave surface of the concave surface member, and a through hole through which the inner needle is penetrated is resiliently closed. Injection tool. 前記密閉部材は、前面も前記貫通孔を中心とした円錐凸面に形成されている請求項7に記載の薬液注入用具。   The medical solution injection tool according to claim 7, wherein the sealing member has a front surface formed to have a conical convex surface centered on the through hole. 前記管状部材は、前記内針が挿通されている管状本体と、前記管状本体から分岐されている分岐管部と、を有する二股構造に形成されており、
前記管状本体は、前記分岐管部が分岐している位置より後方で前記密閉部材が配置されている位置より前方の内周面にストッパ部が形成されており、
前記ストッパ部は、前記密閉部材より小径で前記内針が挿通されている貫通孔が形成されている請求項1ないし8の何れか一項に記載の薬液注入用具。
The tubular member is formed in a bifurcated structure having a tubular main body through which the inner needle is inserted, and a branch pipe portion branched from the tubular main body,
The tubular body has a stopper portion formed on the inner peripheral surface in front of the position where the sealing member is arranged behind the position where the branch pipe portion is branched.
The drug solution injection tool according to any one of claims 1 to 8, wherein the stopper portion is formed with a through-hole having a smaller diameter than the sealing member and through which the inner needle is inserted.
前記管状部材は、別体の延長チューブが着脱自在に連結される連結機構が後端部に形成されている請求項1ないし9の何れか一項に記載の薬液注入用具。   The drug solution injection device according to any one of claims 1 to 9, wherein the tubular member has a connecting mechanism for detachably connecting a separate extension tube formed at a rear end portion. 前記延長チューブは、円筒状の雌ネジ部材が先端に装着されており、
前記管状部材は、前記連結機構として前記雌ネジ部材が係脱自在に螺合される雄ネジ部が前記後端部の外周面に形成されている請求項10に記載の薬液注入用具。
The extension tube has a cylindrical female screw member attached to the tip,
11. The drug solution injection tool according to claim 10, wherein the tubular member is formed with an external thread portion on the outer peripheral surface of the rear end portion to which the internal thread member is removably engaged as the connection mechanism.
前記管状部材は、後方ほど拡開した円錐状の凹部が後面に形成されており、
前記内針は、後端に装着されている円柱状のノブ状部と、前記ノブ状部の前端に形成されていて前記凹部に係脱自在に係合している円錐状の凸部と、を有する請求項1ないし11の何れか一項に記載の薬液注入用具。
The tubular member has a conical recess formed on the rear surface that expands toward the rear,
The inner needle includes a cylindrical knob-shaped portion attached to a rear end, a conical convex portion formed at a front end of the knob-shaped portion and detachably engaged with the concave portion, The medicinal solution injection tool according to any one of claims 1 to 11, which has
前記内針は、円筒状の前記ノブ状部の外周面の後端に円環状の凸部が形成されている請求項12に記載の薬液注入用具。   The chemical injection device according to claim 12, wherein the inner needle has an annular convex portion formed at the rear end of the outer peripheral surface of the cylindrical knob-shaped portion. 前記外針の後端外周に後方ほど拡開した円錐状に外周面が形成されているハンドル部が装着されている請求項1ないし13の何れか一項に記載の薬液注入用具。   The medicinal-solution injecting device according to any one of claims 1 to 13, wherein a handle portion having an outer peripheral surface formed in a conical shape that expands toward the rear is attached to a rear end outer periphery of the outer needle. 前記ハンドル部は、前記外周面の前端から後端まで複数の円環状の凸部が連続的に形成されている請求項14に記載の薬液注入用具。   The chemical | medical solution injection tool of Claim 14 in which the said handle | steering-wheel part is continuously formed with several annular convex parts from the front end of the said outer peripheral surface to the rear end. RFID(Radio Frequency Identification)チップが搭載されている請求項1ないし15の何れか一項に記載の薬液注入用具。   The drug solution injection tool according to any one of claims 1 to 15, wherein an RFID (Radio Frequency Identification) chip is mounted. 前記RFIDチップに耐圧が記録されている請求項16に記載の薬液注入用具。   The chemical | medical solution injection tool of Claim 16 by which pressure | voltage resistance is recorded on the said RFID chip | tip. 前記RFIDチップが、周囲の環境を検出する環境センサと、検出された前記環境を記録するデータ記憶部と、を有する請求項16または17に記載の薬液注入用具。   The chemical solution injection device according to claim 16 or 17, wherein the RFID chip includes an environmental sensor that detects an ambient environment, and a data storage unit that records the detected environment. 被験者の血管に薬液を注入するための薬液注入用具に延長チューブで連結された薬液シリンジを駆動する薬液注入装置であって、
請求項17に記載の薬液注入用具のRFIDチップから前記耐圧を取得するRFIDリーダと、
前記薬液シリンジを駆動するシリンジ駆動機構と、
圧入される前記薬液の圧力を検出する圧力検出部と、
検出される前記圧力が取得された前記耐圧を超過しないように前記シリンジ駆動機構を動作制御する動作制御部と、
を有する薬液注入装置。
A chemical injection device for driving a chemical syringe connected with an extension tube to a chemical injection tool for injecting a chemical into a blood vessel of a subject,
An RFID reader that acquires the pressure resistance from an RFID chip of the chemical injection device according to claim 17,
A syringe drive mechanism for driving the chemical syringe;
A pressure detector for detecting the pressure of the chemical solution to be press-fitted, and
An operation control unit for controlling the operation of the syringe drive mechanism so that the detected pressure does not exceed the acquired pressure resistance;
A chemical injection device.
前記RFIDリーダは、請求項18に記載の薬液注入用具のRFIDチップから前記環境の履歴を取得し、
前記動作制御部は、取得された前記履歴が所定条件を逸脱していると前記シリンジ駆動機構を作動させない請求項19に記載の薬液注入装置。
The RFID reader acquires the history of the environment from the RFID chip of the chemical injection device according to claim 18.
The chemical injection device according to claim 19, wherein the operation control unit does not operate the syringe drive mechanism when the acquired history deviates from a predetermined condition.
JP2007037394A 2007-02-19 2007-02-19 Chemical injection tool and chemical injection device Expired - Fee Related JP4956219B2 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012532708A (en) * 2009-07-15 2012-12-20 ベー・ブラウン・メルズンゲン・アクチエンゲゼルシャフト Catheter apparatus having a needle guard
JP2014514016A (en) * 2011-03-09 2014-06-19 ノッティンガム トレント ユニバーシティ Vascular communication device
US10207081B2 (en) 2009-11-12 2019-02-19 B. Braun Melsungen Ag IV-catheter insertion device

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08501478A (en) * 1992-09-23 1996-02-20 シンバイオシス・コーポレイション Thoracentesis sheath catheter assembly
JPH11332991A (en) * 1998-05-26 1999-12-07 Terumo Corp Indwelling needle assembly
JP2001190683A (en) * 2000-01-14 2001-07-17 Terumo Corp Needling tool
JP2002528038A (en) * 1995-06-07 2002-08-27 アレジアンス コーポレイション Chest puncture catheter device with self-sealing valve
JP2003093515A (en) * 2001-09-20 2003-04-02 Top:Kk Indwelling needle
JP2004194721A (en) * 2002-12-16 2004-07-15 Nemoto Kyorindo:Kk Liquid chemical injecting apparatus
JP2005185311A (en) * 2003-12-24 2005-07-14 Nemoto Kyorindo:Kk Medical liquid injecting implement
WO2005084732A1 (en) * 2004-03-03 2005-09-15 Nemoto Kyorindo Co., Ltd. Medical solution injection system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08501478A (en) * 1992-09-23 1996-02-20 シンバイオシス・コーポレイション Thoracentesis sheath catheter assembly
JP2002528038A (en) * 1995-06-07 2002-08-27 アレジアンス コーポレイション Chest puncture catheter device with self-sealing valve
JPH11332991A (en) * 1998-05-26 1999-12-07 Terumo Corp Indwelling needle assembly
JP2001190683A (en) * 2000-01-14 2001-07-17 Terumo Corp Needling tool
JP2003093515A (en) * 2001-09-20 2003-04-02 Top:Kk Indwelling needle
JP2004194721A (en) * 2002-12-16 2004-07-15 Nemoto Kyorindo:Kk Liquid chemical injecting apparatus
JP2005185311A (en) * 2003-12-24 2005-07-14 Nemoto Kyorindo:Kk Medical liquid injecting implement
WO2005084732A1 (en) * 2004-03-03 2005-09-15 Nemoto Kyorindo Co., Ltd. Medical solution injection system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012532708A (en) * 2009-07-15 2012-12-20 ベー・ブラウン・メルズンゲン・アクチエンゲゼルシャフト Catheter apparatus having a needle guard
US9962525B2 (en) 2009-07-15 2018-05-08 B. Braun Melsungen Ag Catheter device with needle guard
US10463839B2 (en) 2009-07-15 2019-11-05 B. Braun Melsungen Ag Catheter device with needle guard
US10207081B2 (en) 2009-11-12 2019-02-19 B. Braun Melsungen Ag IV-catheter insertion device
JP2014514016A (en) * 2011-03-09 2014-06-19 ノッティンガム トレント ユニバーシティ Vascular communication device

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