JPH03247347A - Syringe pump - Google Patents
Syringe pumpInfo
- Publication number
- JPH03247347A JPH03247347A JP2044228A JP4422890A JPH03247347A JP H03247347 A JPH03247347 A JP H03247347A JP 2044228 A JP2044228 A JP 2044228A JP 4422890 A JP4422890 A JP 4422890A JP H03247347 A JPH03247347 A JP H03247347A
- Authority
- JP
- Japan
- Prior art keywords
- pressing member
- syringe
- piston
- screw shaft
- movable block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000007788 liquid Substances 0.000 abstract description 5
- 239000003814 drug Substances 0.000 abstract 1
- 229940079593 drug Drugs 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は、シリンダに対してピストンを前進させること
によりシリンダ内の薬液を吐出させるようにしたシリン
ジポンプに関する。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a syringe pump that discharges a medicinal liquid from a cylinder by advancing a piston relative to the cylinder.
「従来の技術」
従来、シリンジポンプとして、シリンジのシリンダを基
台に固定する固定手段と、上記基台に固定したシリンジ
の軸方向と平行に配設して基台に回転自在に軸支したね
じ軸と、このねじ軸を回転駆動するモータと、上記シリ
ンジのピストンに係合する係合部を有する抑圧部材と、
この押圧部材に設けられて上記ねじ軸に螺合するナツト
とを備え、上記ねじ軸の回転により上記ナツトおよび押
圧部材を介してピストンを前進させるようにしたものが
知られている（実公昭６０−２１０９２号公報、特開平
１−１３９０７４号公報）。"Prior Art" Conventionally, a syringe pump has a fixing means for fixing a syringe cylinder to a base, and a syringe fixed to the base, which is arranged parallel to the axial direction and rotatably supported on the base. a suppressing member having a screw shaft, a motor that rotationally drives the screw shaft, and an engaging portion that engages with the piston of the syringe;
It is known that the pressing member is provided with a nut that is screwed into the screw shaft, and the rotation of the screw shaft causes the piston to move forward via the nut and the pressing member. -21092, Japanese Unexamined Patent Publication No. 1-139074).
そ、して上記公報のものは、いずれもナツトとねじ軸と
を係合又は離脱させることができるようになっており、
基台にシリンジをセットする際にはナツトとねじ軸との
係合を離脱させて押圧部材をねじ軸に対して自由に移動
させ、それによりシリンジを容易に基台にセットできる
ようにしている。In the above-mentioned publications, the nut and screw shaft can be engaged or disengaged,
When setting the syringe on the base, the nut is disengaged from the screw shaft to allow the pressing member to move freely relative to the screw shaft, thereby making it easier to set the syringe on the base. .
「発明が解決しようとする課題」
しかしながら、上記押圧部材の係合部は単にピストンを
前進させるだけではなく、負圧によりピストンが押圧部
材から離隔して前進してしまうことも防止しなければな
らないので、上記固定手段によりシリンジのシリンダを
基台に固定してしまうと、上記係合部とピストンとを係
合させることができなくなる。``Problems to be Solved by the Invention'' However, the engaging portion of the pressing member does not simply move the piston forward, but must also prevent the piston from moving forward away from the pressing member due to negative pressure. Therefore, if the cylinder of the syringe is fixed to the base by the fixing means, the engaging portion and the piston cannot be engaged with each other.
このため従来は上記ナツトとねじ軸との係合を離脱させ
、上記係合部にピストンを係合させるのに好適な位置ま
で押圧部材を移動させ、その状態で係合部にピストンを
係合させてからシリンダを固定手段で基台に固定する必
要があり、その取付は作業が煩雑となっていた。For this reason, in the past, the nut and screw shaft were disengaged, the pressing member was moved to a suitable position for engaging the piston with the engaging part, and in that state, the piston was engaged with the engaging part. After that, it is necessary to fix the cylinder to the base using a fixing means, which makes the installation process complicated.
本発明はそのような事情に鑑み、シリンダを基台に固定
した後に、上記押圧部材を自由に移動させてその係合部
をピストンに係合させるとともに、この押圧部材を駆動
源に連動させことができるようにし、それによってシリ
ンジの取付は作業を容易に行なえるようにしたものであ
る。In view of such circumstances, the present invention provides a system in which, after fixing the cylinder to the base, the pressing member is moved freely to engage its engaging portion with the piston, and the pressing member is linked to a drive source. This makes it easier to install the syringe.
「課題を解決するための手段」
すなわち本発明は、シリンジのシリンダを基台に固定す
る固定手Ｅ９と、上記シリンジのピストンに係合する係
合部を有する押圧部材と、この押圧部材を上記シリンジ
の軸方向に移動させて上記ピストンを前進させる駆動機
構とを備えたシリンジポンプにおいて、
上記基台に可動ブロックをシリンジの軸方向に往復動自
在に設けるとともに、この可動ブロックに上記駆動機構
を連動させ、また上記押圧部材を上記可動ブロックに、
該押圧部材の係合部が上記ピストンに係合する係合位置
とその係合が外れる離脱位置とに往復動自在に設けると
ともに、該押圧部材に上記駆動機構の一部を構成する連
動部材を設け、かつこの連動部材は、上記抑圧部材が係
合位置に位置された際に上記駆動機構を確立して該駆動
機構による可動ブロックの移動を許容させ、また押圧部
材が離脱位置に位置された際に上記駆動機構から離脱し
て可動ブロックの自由な移動を許容させるようにしたも
のである。"Means for Solving the Problems" That is, the present invention provides a fixing hand E9 for fixing a cylinder of a syringe to a base, a pressing member having an engaging portion that engages with a piston of the syringe, and a pressing member as described above. In a syringe pump equipped with a drive mechanism that advances the piston by moving it in the axial direction of the syringe, a movable block is provided on the base so as to be able to reciprocate in the axial direction of the syringe, and the drive mechanism is attached to the movable block. interlocking, and the pressing member is connected to the movable block,
The engaging portion of the pressing member is reciprocably provided between an engaging position where it engages with the piston and a disengaging position where it is disengaged, and the pressing member is provided with an interlocking member that constitutes a part of the drive mechanism. and the interlocking member establishes the drive mechanism to allow movement of the movable block by the drive mechanism when the suppressing member is located at the engagement position, and the interlocking member is configured to allow the movable block to move by the drive mechanism, and when the pressing member is located at the disengaged position. In this case, the movable block is detached from the drive mechanism to allow free movement of the movable block.
「作用」
上記構成によれば、上記基台にシリンジをセットする際
には、先ずシリンダを固定手段によって基台に固定する
。そして次に、上記抑圧部材を離脱位置に位置させれば
、この押圧部材に設けた連動部材が駆動機構から離脱し
て可動ブロックの自由な移動を許容すると同時に、上記
係合部がピストンから離脱する位置となるので、この状
態で可動ブロックおよび押圧部材を自由に移動させて上
記係合部をピストンに係合可能な位置に位置させること
ができる。"Operation" According to the above configuration, when setting the syringe on the base, the cylinder is first fixed to the base by the fixing means. Next, when the suppressing member is located at the disengaged position, the interlocking member provided on the press member disengages from the drive mechanism to allow free movement of the movable block, and at the same time, the engaging portion disengages from the piston. Therefore, in this state, the movable block and the pressing member can be freely moved to position the engaging portion at a position where it can be engaged with the piston.
そして上記係合部をピストンに係合可能な位置に位置さ
せたら、上記押圧部材を離脱位置から係合位置に位置さ
せれば、上記係合部がピストンに係合するとともに、上
記連動部材が駆動機構を確立するので、該駆動機構によ
り可動ブロックおよび押圧部材を前進させてシリンジか
ら薬液を吐出させることができる。When the engaging portion is positioned at a position where it can engage with the piston, the pressing member is moved from the disengaged position to the engaged position, so that the engaging portion engages with the piston and the interlocking member Since the drive mechanism is established, the movable block and the pressing member can be advanced by the drive mechanism to discharge the medicinal liquid from the syringe.
このように、シリンダを基台に固定した後に押圧部材の
係合部をピストンに係合させることができるので、従来
に比較してその取付は作業を容易なものとすることがで
きる。In this way, since the engaging portion of the pressing member can be engaged with the piston after the cylinder is fixed to the base, the installation work can be made easier than in the past.
「実施例」
以下図示実施例について本発明を説明すると、第１図に
８いて、シリンジポンプは基台１上の所定位置にシリン
ジ２のシリンダ３を固定する固定手段４を備えており、
この固定手段４によって固定したシリンジ２のピストン
５に押圧部材６を係合させ、かつ抑圧部材６を駆動機構
７で前進させて上記ピストン５を前進させることにより
、シリンダ３内の薬液を吐出させることができるように
なっている。``Embodiment'' The present invention will be described below with reference to an illustrated embodiment. As shown in FIG.
The pressing member 6 is engaged with the piston 5 of the syringe 2 fixed by the fixing means 4, and the suppressing member 6 is advanced by the drive mechanism 7 to advance the piston 5, thereby discharging the medicinal liquid in the cylinder 3. It is now possible to do so.
上記シリンジ２の固定手段４は、シリンダ３の外周面下
部を支える下部支持部材１１と外周面上部を支持する上
部支持部材１２とを備えており、上記下部支持部材１１
は平行に並設した複数の三角形状の支持面１１ａ （第
３図）によってシリンダ３を水平に支えることができる
ようになっている。また下部支持部材１１はシリンダ３
の末端フランジ部３ａが挿入される凹部１１ｂを備えて
おり、この凹部１１ｂに上記フランジ部３ａを係合させ
ることによりシリンダ３が軸方向に移動するのを阻止す
ることができるようになっている。The fixing means 4 for the syringe 2 includes a lower support member 11 that supports the lower part of the outer peripheral surface of the cylinder 3 and an upper support member 12 that supports the upper part of the outer peripheral surface of the cylinder 3.
The cylinder 3 can be supported horizontally by a plurality of triangular support surfaces 11a (FIG. 3) arranged in parallel. Further, the lower support member 11 is connected to the cylinder 3.
The cylinder 3 is provided with a recess 11b into which the end flange 3a is inserted, and by engaging the flange 3a with the recess 11b, the cylinder 3 can be prevented from moving in the axial direction. .
上記押圧部材６を前進させる駆動機構７は、基台１の下
面側に、シリンジ２の軸方向と平行に配設して回転自在
に軸支したねじ軸１５と、該ねじ軸１５を回転駆動する
モータ１６とを備えている。そして上記ねじ軸１５の外
周に可動ブロック１７を摺動自在に嵌装してあり、この
可動ブロック１７を上記ねじ軸１５と平行に配設して基
台１に固定したガイドロッド１８に摺動可能に係合させ
ることにより、該可動ブロック１７がねじ軸１５の周囲
を回転することがないようにしている。The drive mechanism 7 for advancing the pressing member 6 includes a screw shaft 15 disposed on the lower surface side of the base 1 in parallel with the axial direction of the syringe 2 and rotatably supported, and a screw shaft 15 for rotationally driving the screw shaft 15. A motor 16 is provided. A movable block 17 is slidably fitted around the outer periphery of the screw shaft 15, and this movable block 17 is arranged parallel to the screw shaft 15 and slides onto a guide rod 18 fixed to the base 1. The movable block 17 is prevented from rotating around the screw shaft 15 by allowing the movable block 17 to engage.
上記押圧部材６は上記可動ブロック１７に上下方向に進
退動自在に設けてあり、この押圧部材６にハーフナツト
２１を設けるとともに、該ハーフナラ）−２１内に上記
ねじ軸１５を貫通させている。上記ハーフナツト２１は
、比較的厚肉の円筒部材の内面に上記ねじ軸１５に螺合
する雌ねじを螺設するとともに、その円筒部材の上部を
ねじ軸１５の外径の幅で切除してあり、それによって上
記押圧部材６を上方に移動させた際にハーフナツト２１
をねじ軸１５に係合させ、また押圧部材６を押下げた際
にハーフナツト２１とねじ軸１５との係合を離脱させる
ことができるようにしている。The pressing member 6 is provided on the movable block 17 so as to be able to move forward and backward in the vertical direction.The pressing member 6 is provided with a half nut 21, and the screw shaft 15 is passed through the half nut 21. The half nut 21 has a female thread screwed into the inner surface of a relatively thick cylindrical member to be screwed into the threaded shaft 15, and the upper part of the cylindrical member is cut out to a width equal to the outer diameter of the threaded shaft 15. As a result, when the pressing member 6 is moved upward, the half nut 21
is engaged with the screw shaft 15, and when the pressing member 6 is pressed down, the half nut 21 and the screw shaft 15 can be disengaged from each other.
そして上記可動ブロック１７の下部にブツシュロッド２
２を上記押圧部材６と同一方向に摺動自在に設けるとと
もに、該ブツシュロッド２２の上端部を上記押圧部材６
の下端部に当接させ、かつブツシュロッド２２と可動ブ
ロック１７との間にばね２３を弾装して上記押圧部材６
を上方に付勢することにより、通常は上記ハーフナツト
２１をねじ軸１５に係合させている。A bushing rod 2 is attached to the lower part of the movable block 17.
2 is provided slidably in the same direction as the pressing member 6, and the upper end of the bushing rod 22 is connected to the pressing member 6.
The pressing member 6 is brought into contact with the lower end of the pressing member 6, and a spring 23 is elastically mounted between the bushing rod 22 and the movable block 17.
Normally, the half nut 21 is engaged with the screw shaft 15 by forcing the half nut 21 upward.
上記押圧部材６の上端部は基台１にねじ軸１５の軸方向
に沿って形成したスリット２４を介して上面側に突出さ
せてあり、その上部前面側にピストン５の末端部に形成
したフランジ部５ａが係合される係合部６Ａを形成して
いる。図示実施例では、上記係合部６Ａは、ピストン５
の末端面に当接する抑圧面６ａと、この抑圧面６ａの下
部から前方に突出するとともに上方に伸びる掛止部６ｂ
とを備えており、上記押圧面６ａと掛止ｆ！ＴＳ６ｂと
の間に上記ピストン５のフランジ部５ａを挿入して両者
を係合させることができるようにしている。このとき、
第２図に示すように、上記掛止部６ｂの上面に三角形状
の凹部を形成し、その凹部内にピストン５の本体部分を
貫通させることができるようにしている。The upper end of the pressing member 6 is made to protrude upward through a slit 24 formed in the base 1 along the axial direction of the screw shaft 15, and a flange formed at the end of the piston 5 is formed on the upper front side of the slit 24. An engaging portion 6A is formed with which the portion 5a is engaged. In the illustrated embodiment, the engaging portion 6A is the piston 5.
a suppressing surface 6a that comes into contact with the end surface of the suppressing surface 6a, and a hooking portion 6b that projects forward from the lower part of the suppressing surface 6a and extends upward.
The pressing surface 6a and the latch f! The flange portion 5a of the piston 5 is inserted between the piston 5 and the TS 6b so that the two can be engaged with each other. At this time,
As shown in FIG. 2, a triangular recess is formed on the upper surface of the above-mentioned latching portion 6b, and the main body portion of the piston 5 can be passed through the recess.
さらに、上記可動ブロック１７には上記押圧部材６を上
下３段階位置で停止させる位置決め手段２７を設けてあ
り、この位置決め手段２７は、押圧部材６に上下方向に
所定間隔で形成した３つの係合穴２８ａ、２８ｂ、２８
ｃと、可動ブロック１７に設けられてばね２９で第１図
左方向に付勢され、上記係合穴２８ａ 、 ２８ｂ 、
２８ｃのいずれかに係合されるボール３０とを備えて
いる。Further, the movable block 17 is provided with a positioning means 27 for stopping the pressing member 6 at three vertical positions. Holes 28a, 28b, 28
c, and are provided in the movable block 17 and biased toward the left in FIG. 1 by a spring 29, and the engagement holes 28a, 28b,
28c.
そして第２図に示すように、上記押圧部材６を最上段の
係合位置Ａに位置させることにより、上記係合部６Ａを
ピストン５のフランジ部５ａに係合させると同時にハー
フナツト２１をねじ軸１５に係合させることができるよ
うにしている。また上記押圧部材６を中段の中間位置Ｂ
に位置させることにより、上記係合部６Ａとフランジ部
５ａとの係合状態を維持しながらハーフナツト２１をね
じ軸１５から離脱させ、さらに押圧部材６を最下段の離
脱位置Ｃに位置させることにより、上記ハーフナツト２
１をねじ軸１５から離脱させるのと同時に係合部６Ａと
フランジ部５ａとの係合を離脱させることができるよう
にしている。As shown in FIG. 2, by positioning the pressing member 6 at the uppermost engagement position A, the engagement portion 6A is engaged with the flange portion 5a of the piston 5, and at the same time the half nut 21 is screwed into the screw shaft. 15. In addition, the pressing member 6 is moved to the middle position B.
By positioning the half nut 21 at the screw shaft 15 while maintaining the engaged state between the engaging portion 6A and the flange portion 5a, and further positioning the pressing member 6 at the lowermost detached position C, , the above half nut 2
1 from the screw shaft 15, the engaging portion 6A and the flange portion 5a can be disengaged from each other at the same time.
次に、上記ハーフナツト２１は押圧部材６に対してねじ
軸１５の軸方向に移動可能に設けてあり、第４図に示す
ように、上記ハーフナツト２１の左端部に形成したＵ字
形のフランジ部２１ａの下面を平坦に形成し、その平坦
面を上記ブツシュロッド２２の上端面に摺動可能に係合
させることにより、該ハーフナツト２１がねじ軸１５の
円周方向に回転することがないようにしている。また上
述したように、ハーフナツト２１は比較的厚肉の円筒部
材の上部をねじ軸１５の外径の幅で切除しであるので、
該ハーフナツト２１は押圧部材６に対してハーフナツト
２１の軸方向に移動することができても、半径方向には
移動することがないようにしている。Next, the half nut 21 is provided so as to be movable in the axial direction of the screw shaft 15 with respect to the pressing member 6, and as shown in FIG. The half nut 21 is prevented from rotating in the circumferential direction of the screw shaft 15 by forming a flat lower surface and slidably engaging the flat surface with the upper end surface of the bushing rod 22. . Furthermore, as mentioned above, the half nut 21 is a relatively thick cylindrical member whose upper part is cut off to a width equal to the outer diameter of the screw shaft 15.
Although the half nut 21 can move in the axial direction of the half nut 21 with respect to the pressing member 6, it is prevented from moving in the radial direction.
また、上記ハーフナツト２１の左側のねじ軸１５の外周
に筒状部材３３を嵌装してあり、この筒状部材３３をね
じ軸１５と可動ブロック１７とに対してねじ軸１５の軸
方向に摺動自在としている。そしてこの筒状部材３３と
可動ブロック１７との間にばね３４を弾装し、該筒状部
材３３の右端面を上記ハーフナツト２１の左端面に弾接
させることにより、通常は筒状部材３３およびハーフナ
ツト２１を押圧部材６に対する図示非作動位置に保持し
ている。Further, a cylindrical member 33 is fitted on the outer periphery of the screw shaft 15 on the left side of the half nut 21, and this cylindrical member 33 is slid in the axial direction of the screw shaft 15 with respect to the screw shaft 15 and the movable block 17. It is free to move. A spring 34 is elastically mounted between the cylindrical member 33 and the movable block 17, and the right end surface of the cylindrical member 33 is brought into elastic contact with the left end surface of the half nut 21. The half nut 21 is held in the non-operating position shown relative to the pressing member 6.
そして上記筒状部材３３の左端部に取付けたロッド３５
を上記可動ブロック１７に取付けたリミットスイッチ等
の検出器３６に接触させ、上記筒状部材３３がばね３４
に抗して左方に変位された際に上記検出器３６によって
そのことを検出することができるようにしている。A rod 35 is attached to the left end of the cylindrical member 33.
is brought into contact with a detector 36 such as a limit switch attached to the movable block 17, and the cylindrical member 33 is brought into contact with the spring 34.
When it is displaced to the left against the force, the detector 36 can detect this fact.
以上の構成において、上記基台１にシリンジ２をセット
する際には、先ず押圧部材６を押下げて最下段の離脱位
置Ｃに位置させ、上記ハーフナツト２１をねじ軸１５か
ら離脱させるとともに、係合部６Ａがフランジ部５ａに
係合しない位置に位置させる。そしてこの状態で抑圧部
材６を第１図の右方端位置まで移動させたら、シリンジ
２のシリンダ３を固定手段４によって基台１に固定する
。In the above configuration, when setting the syringe 2 on the base 1, first push down the pressing member 6 to position it at the lowest disengagement position C, detach the half nut 21 from the screw shaft 15, and release the half nut 21 from the screw shaft 15. The joint portion 6A is located at a position where it does not engage with the flange portion 5a. In this state, when the suppressing member 6 is moved to the right end position in FIG. 1, the cylinder 3 of the syringe 2 is fixed to the base 1 by the fixing means 4.
上記シリンダ３を基台１に固定したら、上記押圧部材６
をその係合部６Ａがフランジ部５ａに係合し得る位置ま
で左方に移動させ、その位置で押圧部材６を最上段位置
まで引上げて係合位置Ａに位置させれば、上記係合部６
Ａをピストン５のフランジ部５ａに係合させると同時に
ハーフナツト２１をねじ軸１５に係合させることができ
る。After fixing the cylinder 3 to the base 1, the pressing member 6
If the engaging portion 6A is moved to the left to a position where it can engage with the flange portion 5a, and at that position the pressing member 6 is pulled up to the uppermost position and positioned at the engaging position A, the engaging portion 6A is moved to the left. 6
A can be engaged with the flange portion 5a of the piston 5 and the half nut 21 can be engaged with the screw shaft 15 at the same time.
したがってこの状態でモータ１６を起動させれば、ねじ
軸１５の回転に伴ってハーフナツト２１および押圧部材
６を介してピストン５が前進されるので、シリンダ２内
の薬液を吐出させることができる。Therefore, if the motor 16 is started in this state, the piston 5 is moved forward via the half nut 21 and the pressing member 6 as the screw shaft 15 rotates, so that the chemical liquid in the cylinder 2 can be discharged.
さらに、上記押圧部材６を中間位置Ｂに位置させた際に
は、上記係合部６Ａとフランジ部５ａとの係合状態を維
持しながらハーフナツト２１をねじ軸１５から離脱させ
ることができるので、人手によりピストン５を押圧部材
６と一体的に移動させながら、シリンジ２を自由に操作
することができる。Furthermore, when the pressing member 6 is located at the intermediate position B, the half nut 21 can be separated from the screw shaft 15 while maintaining the engaged state between the engaging portion 6A and the flange portion 5a. The syringe 2 can be freely operated while manually moving the piston 5 integrally with the pressing member 6.
そして正常な作動時には、上記ハーフナツト２１はばね
３４によって押圧部材６に対する非作動位置に保持され
ているが、チューブの詰まり等によりピストン５の前進
が停止されると、ねじ軸１５は継続して回転されている
ので、ピストン５の停止に伴って停止する押圧部材６お
よび可動ブロック１７に対して、ねじ軸１５に係合する
ハーフナツト２１はばね３４の弾撥力に抗して前進され
るようになる。During normal operation, the half nut 21 is held in a non-operating position relative to the pressing member 6 by the spring 34, but if the forward movement of the piston 5 is stopped due to a blockage in the tube, the screw shaft 15 continues to rotate. Therefore, the half nut 21 that engages with the screw shaft 15 is moved forward against the elastic force of the spring 34 with respect to the pressing member 6 and movable block 17 that stop when the piston 5 stops. Become.
そしてハーフナツト２１が押圧部材６および可動ブロッ
ク１７に対して前進されると、筒状部材３３およびロッ
ド３５が可動ブロック１７に設けた検出器３６に対して
前進されるので、該検出器３６がそのことを検出し、モ
ータ１６を停止させたり、警報を発するようになる。When the half nut 21 is advanced relative to the pressing member 6 and the movable block 17, the cylindrical member 33 and the rod 35 are advanced relative to the detector 36 provided on the movable block 17. This is detected and the motor 16 is stopped or an alarm is issued.
次に、第５図、第６図は本発明の他の実施例を示したも
ので、本実施例においては基台１の下面にシリンジ２の
軸方向に沿って一対のガイドレール４１を固定してあり
、このガイドレール４１に可動ブロック４２を摺動自在
に取付けている。Next, FIGS. 5 and 6 show another embodiment of the present invention. In this embodiment, a pair of guide rails 41 are fixed to the lower surface of the base 1 along the axial direction of the syringe 2. A movable block 42 is slidably attached to this guide rail 41.
そしてこめ可動ブロック４２に駆動機構４３を構成する
モータ４４を取付けてあり、このモータ４４の駆動軸に
取付けた細長い駆動ギヤ４５を押圧部材６に設けたピニ
オン４６に噛合させ、かつ該ピニオン４６をシリンジ２
の軸方向に沿って基台１に固定したラック４７に噛合さ
せている。A motor 44 constituting a drive mechanism 43 is attached to the movable block 42, and an elongated drive gear 45 attached to the drive shaft of the motor 44 is meshed with a pinion 46 provided on the pressing member 6. Syringe 2
It is made to mesh with a rack 47 fixed to the base 1 along the axial direction.
上記抑圧部材６に設けたピニオン４６は、該押圧部材６
に固定した軸４８に回転のみ可能に軸支してあり、押圧
部材６を最上段の係合位置Ａに位置させた際に、該押圧
部材６の係合部６Ａをピストン５のフランジ部５ａに係
合させるとともに、上記ビニオン４６を駆動ギヤ４５と
ラック４７とに同時に噛合させて駆動機構４３を確立さ
せ、上記モータ４４によって可動ブロック４２および押
圧部材６を移動させることができるようにしている。The pinion 46 provided on the pressing member 6 is connected to the pressing member 6.
When the pressing member 6 is positioned at the uppermost engagement position A, the engaging portion 6A of the pressing member 6 is connected to the flange portion 5a of the piston 5. At the same time, the pinion 46 is engaged with the drive gear 45 and the rack 47 at the same time to establish the drive mechanism 43, so that the movable block 42 and the pressing member 6 can be moved by the motor 44. .
また上記押圧部材６を下降させて中段の中間位置Ｂに位
置させた際には、上記ビニオン４６を駆動ギヤ４５との
噛合状態を維持したままそれに沿って下降させ、該ビニ
オン４６をラック４７から離脱させる。これにより上記
駆動機構４３はそのビニオン４６の部分で連動関係が遮
断されるので、可動ブロック４２および押圧部材６はガ
イドレール４１に沿って自由に移動することが可能とな
る。但しこの際には、上記押圧部材６の係合部６Ａはフ
ランジ部５ａとの係合状態を維持している。When the pressing member 6 is lowered to the middle position B, the pinion 46 is lowered along the drive gear 45 while maintaining its meshing state, and the pinion 46 is removed from the rack 47. make them leave. As a result, the interlocking relationship of the drive mechanism 43 is interrupted at the pinion 46, so that the movable block 42 and the pressing member 6 can freely move along the guide rail 41. However, at this time, the engaging portion 6A of the pressing member 6 maintains the engaged state with the flange portion 5a.
そしてさらに、上記抑圧部材６を最下段の離脱位置Ｃに
位置させれば、上記駆動機構４３の連動関係を遮断した
上で、さらに係合部６Ａとフランジ部５ａとの係合を離
脱させることができる。Further, when the suppressing member 6 is located at the lowermost detached position C, the interlocking relationship of the drive mechanism 43 is cut off, and the engagement between the engaging portion 6A and the flange portion 5a is further disengaged. I can do it.
なお、その他の構成は第１実施例と同様に構成してあり
、同−若しくは相当部分には同一の符合を付して示しで
ある。The rest of the structure is similar to that of the first embodiment, and the same or equivalent parts are denoted by the same reference numerals.
「発明の効果」
以上のように、本発明によれば、シリンダを基台に固定
した後に、押圧部材を自由に移動させつつ該押圧部材の
係合部をピストンに係合させることができるので、従来
に比較してシリンジの取付は作業を容易なものとするこ
とができるという効果が得らる。"Effects of the Invention" As described above, according to the present invention, after the cylinder is fixed to the base, the engaging portion of the pressing member can be engaged with the piston while freely moving the pressing member. This has the advantage that the syringe installation work can be made easier than in the past.
第１図は本発明の一実施例を示す断面図、第２図は係合
部６Ａとフランジ部５ａとの係合状態を説明する説明図
、第３図は第１図の■−■線に沿う断面図、第４図は第
１図のＩＶ−ＩＶ線に沿う断面図、第５図は本発明の他
の実施例を示す断面図、第６図は第５図のＶＩ−ＶＩ線
に沿う断面図である。
１・・・基台 ２・・・シリンジ３・・・シ
リンダ ４・・・固定手段５・・・ピストン
６・・・押圧部材６Ａ・・・係合部６Ａ
７．４３・・・駆動機構１５・・・ねじ軸 １
６．４４・・・モータ１７・・・可動ブロック ４５
・・・駆動ギヤ２１・・・ハーフナツト（連動部材）FIG. 1 is a cross-sectional view showing an embodiment of the present invention, FIG. 2 is an explanatory view illustrating the engagement state between the engaging portion 6A and the flange portion 5a, and FIG. 3 is the line 4 is a sectional view taken along the line IV-IV in FIG. 1, FIG. 5 is a sectional view showing another embodiment of the present invention, and FIG. 6 is a sectional view taken along the line VI-VI in FIG. 5. FIG. 1... Base 2... Syringe 3... Cylinder 4... Fixing means 5... Piston
6...Press member 6A...Engagement part 6A
7.43... Drive mechanism 15... Screw shaft 1
6.44...Motor 17...Movable block 45
... Drive gear 21 ... Half nut (interlocking member)
Claims (1)
シリンジのピストンに係合する係合部を有する押圧部材
と、この押圧部材を上記シリンジの軸方向に移動させて
上記ピストンを前進させる駆動機構とを備えたシリンジ
ポンプにおいて、上記基台に可動ブロックをシリンジの
軸方向に往復動自在に設けるとともに、この可動ブロッ
クに上記駆動機構を連動させ、また上記押圧部材を上記
可動ブロックに、該押圧部材の係合部が上記ピストンに
係合する係合位置とその係合が外れる離脱位置とに往復
動自在に設けるとともに、該押圧部材に上記駆動機構の
一部を構成する連動部材を設け、かつこの連動部材は、
上記押圧部材が係合位置に位置された際に上記駆動機構
を確立して該駆動機構による可動ブロックの移動を許容
させ、また押圧部材が離脱位置に位置された際に上記駆
動機構から離脱して可動ブロックの自由な移動を許容さ
せることを特徴とするシリンジポンプ。a fixing means for fixing the cylinder of the syringe to the base; a pressing member having an engaging portion that engages with the piston of the syringe; and a drive mechanism for moving the pressing member in the axial direction of the syringe to advance the piston. In the syringe pump, a movable block is provided on the base so as to be reciprocally movable in the axial direction of the syringe, the drive mechanism is interlocked with the movable block, and the pressing member is attached to the movable block so that the pressing member can move freely in the axial direction of the syringe. The engaging portion of the member is provided so as to be reciprocally movable between an engaging position where it engages with the piston and a disengaging position where it is disengaged, and an interlocking member that constitutes a part of the driving mechanism is provided on the pressing member, This interlocking member is
When the pressing member is located at the engagement position, the driving mechanism is established to allow the movable block to be moved by the driving mechanism, and when the pressing member is located at the disengaging position, the driving mechanism is disengaged from the driving mechanism. A syringe pump characterized by allowing a movable block to move freely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2044228A JPH0634825B2 (en) | 1990-02-23 | 1990-02-23 | Syringe pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2044228A JPH0634825B2 (en) | 1990-02-23 | 1990-02-23 | Syringe pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03247347A true JPH03247347A (en) | 1991-11-05 |
| JPH0634825B2 JPH0634825B2 (en) | 1994-05-11 |
Family
ID=12685684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2044228A Expired - Lifetime JPH0634825B2 (en) | 1990-02-23 | 1990-02-23 | Syringe pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0634825B2 (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10192397A (en) * | 1997-01-10 | 1998-07-28 | Japan Servo Co Ltd | Infusion device |
| JPH11178921A (en) * | 1997-12-22 | 1999-07-06 | Fuji Electric Co Ltd | Presser clamp mechanism of syringe pump |
| EP0916353A4 (en) * | 1997-01-10 | 2000-11-02 | Japan Servo | Liquid transportation apparatus |
| JP2001281131A (en) * | 2000-03-29 | 2001-10-10 | Sysmex Corp | Particle measuring device |
| WO2007123288A1 (en) * | 2006-04-21 | 2007-11-01 | Sewon Cellontech Co., Ltd. | Apparatus for operating syringe piston |
| WO2011093064A1 (en) * | 2010-01-27 | 2011-08-04 | パナソニック株式会社 | Syringe drive device |
| JP2012170787A (en) * | 2011-02-24 | 2012-09-10 | Terumo Corp | Syringe pump |
| JP2018011889A (en) * | 2016-07-22 | 2018-01-25 | ニプロ株式会社 | Infusion device |
| JP2018019671A (en) * | 2016-08-05 | 2018-02-08 | パナソニック株式会社 | Liquid moving device |
| JP2018075276A (en) * | 2016-11-11 | 2018-05-17 | ミネベアミツミ株式会社 | Syringe pump |
| WO2019012256A1 (en) * | 2017-07-14 | 2019-01-17 | Bifold Fluidpower Limited | Failsafe valve actuator |
| JP2019107423A (en) * | 2017-12-20 | 2019-07-04 | ミネベアミツミ株式会社 | Syringe pump |
| JP2019130025A (en) * | 2018-01-31 | 2019-08-08 | ミネベアミツミ株式会社 | Syringe pump |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007132019A1 (en) | 2006-05-16 | 2007-11-22 | Novo Nordisk A/S | A gearing mechanism for an injection device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5997671A (en) * | 1982-11-26 | 1984-06-05 | テルモ株式会社 | Syringe injection apparatus |
| JPS6129364A (en) * | 1984-05-10 | 1986-02-10 | ザ ユニヴア−スイテイ オブ メルボルン | Method and apparatus for controlling dripping chemicals |
-
1990
- 1990-02-23 JP JP2044228A patent/JPH0634825B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5997671A (en) * | 1982-11-26 | 1984-06-05 | テルモ株式会社 | Syringe injection apparatus |
| JPS6129364A (en) * | 1984-05-10 | 1986-02-10 | ザ ユニヴア−スイテイ オブ メルボルン | Method and apparatus for controlling dripping chemicals |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10192397A (en) * | 1997-01-10 | 1998-07-28 | Japan Servo Co Ltd | Infusion device |
| EP0916353A4 (en) * | 1997-01-10 | 2000-11-02 | Japan Servo | Liquid transportation apparatus |
| EP1595562A3 (en) * | 1997-01-10 | 2006-08-02 | Japan Servo Co. Ltd. | Liquid infusion apparatus |
| JPH11178921A (en) * | 1997-12-22 | 1999-07-06 | Fuji Electric Co Ltd | Presser clamp mechanism of syringe pump |
| JP2001281131A (en) * | 2000-03-29 | 2001-10-10 | Sysmex Corp | Particle measuring device |
| WO2007123288A1 (en) * | 2006-04-21 | 2007-11-01 | Sewon Cellontech Co., Ltd. | Apparatus for operating syringe piston |
| US8696634B2 (en) | 2010-01-27 | 2014-04-15 | Panasonic Corporation | Syringe drive device |
| CN102725010A (en) * | 2010-01-27 | 2012-10-10 | 松下电器产业株式会社 | Syringe drive device |
| JP5292478B2 (en) * | 2010-01-27 | 2013-09-18 | パナソニック株式会社 | Syringe drive device |
| WO2011093064A1 (en) * | 2010-01-27 | 2011-08-04 | パナソニック株式会社 | Syringe drive device |
| JP2012170787A (en) * | 2011-02-24 | 2012-09-10 | Terumo Corp | Syringe pump |
| JP2018011889A (en) * | 2016-07-22 | 2018-01-25 | ニプロ株式会社 | Infusion device |
| JP2018019671A (en) * | 2016-08-05 | 2018-02-08 | パナソニック株式会社 | Liquid moving device |
| JP2018075276A (en) * | 2016-11-11 | 2018-05-17 | ミネベアミツミ株式会社 | Syringe pump |
| WO2018088150A1 (en) * | 2016-11-11 | 2018-05-17 | ミネベアミツミ株式会社 | Syringe pump |
| US11052191B2 (en) | 2016-11-11 | 2021-07-06 | Minebea Mitsumi Inc. | Syringe pump |
| WO2019012256A1 (en) * | 2017-07-14 | 2019-01-17 | Bifold Fluidpower Limited | Failsafe valve actuator |
| US11156307B2 (en) | 2017-07-14 | 2021-10-26 | Bifold Fluidpower Limited | Failsafe valve actuator |
| JP2019107423A (en) * | 2017-12-20 | 2019-07-04 | ミネベアミツミ株式会社 | Syringe pump |
| JP2019130025A (en) * | 2018-01-31 | 2019-08-08 | ミネベアミツミ株式会社 | Syringe pump |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0634825B2 (en) | 1994-05-11 |
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