JP3581695B2 - Syringe pump - Google Patents

Description

シリンジポンプにおいて、シーケンス番号が、前回受信した番号と同じときは、何も処理をおこなわず、前回応答として返したものを再送するが、シーケンス番号０のときは、無条件で命令に対する処理を行う。シリンジポンプからの応答におけるシーケンス番号は、受信したシーケンス番号と同じものを使用する。
【００８１】
また、通信エラーのシーケンス番号は、ＦＦＨ（２５５）を使用する。
【００８２】
命令は０１Ｈでシリンジポンプ本体内部情報を要求し、補助命令は００Ｈで基本動作状態を、また０１Ｈでガンマ情報を、０２Ｈで予定量情報を夫々要求するように設定されている。
【００８３】
図１９は、設定ダイヤルの中心断面図である。また、図２０は設定ダイヤル６の分解斜視図である。既に説明済みの構成には同一符号を付して説明を割愛して述べると、両図において、設定ダイヤル６は上記のカバー２、３と略同様の諸仕様を満足する樹脂材料から射出成形されてなり、その回転中心において油含有メタル等からなる耐久性に優れた軸受部（金属ブッシュ）７３がインサート成形等されて一体的に設けられている。
【００８４】
また、内部には厚さ方向に異なる極性となるように着磁された永久磁石７０の１６個分が等間隔になるように内蔵されており、プラスチックシート７５により被覆されている。または、図２０に示したように、帽子状に予め形成されたプラスチックシート７５を被せるようにして、外部に永久磁石７０が直接露出しないようにして、水洗時において錆びないように配慮している。また、この永久磁石磁性材料を分散してなるゴム等のエラストマーで形成させても良い。
【００８５】
一方、上ケース２側には、軸受部（金属ブッシュ）７３を回動自在に軸支するための埋設シャフト７２が植設されており、設定ダイヤル６の軸受部（金属ブッシュ）７３を着脱可能にするとともに挿入された状態において、図１９に示すように永久磁石７０が上ケース２の側面部位に配設されているホールＩＣ７１と、鉄、鋼、コバルト、ニッケル等の常磁性体またはこれらを分散させたプラマグ等のエラストマーで形成された磁性体リング７４の凸部７４ａに対向する位置になるようにしている。
【００８６】
また、図１９に示したように設定ダイヤル６が装着された状態において、上カバー２に固定されているホールＩＣ７１と、磁性体リング７４と永久磁石７０の側面部位の間の寸法が図示のような位置関係になるように、金属ブッシュ７３の端面が上カバーに当接するようにしている。
【００８７】
次に、図２２は図１９のＸ‐Ｘ矢視断面図であって、ホールＩＣ７１と、磁性体リング７４のみ示した図である。本図において磁性体リング７４には図示のような凸部７４ａが略半円分に渡り１０箇所等間隔で一体形成されている。また、ホールＩＣ７１は半円で開いた部分に配設されており、上記のように１６個分が等間隔で配置されている永久磁石７０がホールＩＣ７１と、磁性体リング７４の凸部７４ａに対して夫々対向して吸引及びホールＩＣ７１のオン／オフを行い得るようにしている。また、凸部７４ａの設けられているピッチと永久磁石７０の設けられているピッチを異なるようにして、設定ダイヤル６の回転時のクリック抵抗感が出るように互いに吸引するようにしている。このために通常の状態では磁性体リング７４と永久磁石とが設定ダイヤル６が固定軸体から脱落防止する手段として働く。
【００８８】
図２３は、ホールＩＣ７１が接続されたブロック図である。本図に示したように、２個のホールＩＣ７１がメイン基板１０１に対してコネクタ１０３を介して接続されており、直流５ボルトの電力供給を行うとともに各ホールＩＣ７１間のＡ相、Ｂ相に発生するバイアス電圧変化を約９０度の位相差を持った出力として検出してＣＰＵ１０２のポートに入力して設定ダイヤル６の回転操作に伴う回転方向及び回転数（回転角度）を検出する手段としての作用を可能にしている。
【００８９】
以上の構成において、設定ダイヤル６の操作が暫く行われない状態から、設定ダイヤル６の回転操作が行われたときに最初の１８０度分の回転では設定値は変化しないようにして、誤って回転された時の対処をしている。回転角度が１８０度を超えると、確認のためのブザーが発生し、設定値が回転方向及び回転数に応じて変化するようにするために、ある周期でカウントされた値がｎカウントでｎ周期以上（ｎは整数）の場合に上位桁の数値が変化するようにする。また、停止／消音スイッチ２８を押したままで設定ダイヤル６を回すと上位桁の数値が変化する。例えば、ｍｌ毎に設定値を変化させるときは、１０ｍｌステップで１０ｍｌ毎に設定値を変化させるときは１００ｍｌステップで設定値が変化する。
【００９０】
以上のように構成される設定ダイヤル６は取り外すことで清掃できるが、図２１の使用説明図のように、以下の手順で行う。先ず、シリンジポンプ本体上部の溝部と設定ダイアル６の凹部６ｅが一致するようにする。本体と設定ダイアルの凹部６ｅとの間に、爪または指先をかける。次に、設定ダイアル６を左右にゆらしながら矢印の方向に引き、本体１から設定ダイアル６を取り外す。この後に本体、埋設シャフト７２、及び設定ダイアル６をそれぞれをきれいに拭くか水洗いする。清掃が終了したら、設定ダイアル６を本体１の埋設シャフト７２の付け根部分まで突き当たるまで挿入する。
【００９１】
最後に、図２４は内蔵されたブザーの動作対応図表であって、上記の動作インジケータ７との同期により鳴動パターンと発報間隔が図表に示したように発生されて、使用者に報知し認識させるようにする。なお、図表において、「３音」とは「ピー、ピー、ピー」と音が３つ連続することを示している。「５音」も同様である。 また、鳴動の優先順位としては、基本的には、（ａ）閉塞、シリンジ外れ、クラッチ外れの発生、（ｂ）バッテリー電圧低下（２分、４分、６分、８分、１０分、１０分以上）、（ｃ）残量警報、（ｄ）開始忘れ音の順となるように、優先順位が高く設定されている。また、多重的に警報が発生するときは、順次の高い方に切り換えるようにしている。同様に、消音時において、警報が多重的に発生したときは、優先順位の高いアラームを発するようにするとともに、開始忘れ音のように間欠的に発生する間に、キークリック、ワンショット発報は割り込んで鳴動することができるようにしている。
【００９２】
一方、再度、図４を参照して、動作インジケータ７の動作は、（ａ）正常運転中は、設定流量に対応して４段階の異なる速度で、内蔵の発光ダイオード７ａ〜７ｄが緑色に時計回転方向に順次点滅する。（ｂ）運転停止中は警報時の赤色点灯を除いて、緑色は消灯する。（ｃ）開始忘れの時は、全て発光ダイオード７ａ〜７ｄが赤色点滅する。（ｄ）外部からの通信を受信したときは、一瞬緑色に点滅するようになっている。
【００９３】
以上説明のシリンジポンプの使用説明を行うと、下準備として、まず、用具の確認をして、シリンジポンプ１と付属のポールクランプとＡＣ電源ケーブルと輸液スタンドＰと薬液の入ったシリンジ、留置針の以上が揃っていることを確認する。この後に、ポールクランプを輸液スタンドＰに固定して、ポールクランプを輸液スタンドにしっかりと固定する。このために、シリンジポンプの底にあるネジ穴に、ポールクランプの取りつけネジをいれて固定する。次に、本体右側面のＡＣインレット８にＡＣ電源ケーブルを接続し、プラグをアース端子付のＡＣ１００Ｖのコンセントに接続する。
【００９４】
ＡＣ電源が接続されると、バッテリーランプ１７が点灯して、内蔵バッテリーに充電されている状態になっていることが表示される。
【００９５】
そこで、電源を入れるために電源スイッチ１５を約１秒押して電源をいれるとすべてのランプが３回点滅して、またブザーが鳴って自動的にセルフチェックが行われる。このときＡＣ／ＤＣランプ１６は点灯する一方で、流量・予定量・積算量の各表示ランプ２３、２４、２５が点灯する。また流量・予定量・積算量の表示部１１に、予め設定されているシリンジメーカーが約３秒間、数字で表示される。シリンジメーカー設定ラベルは使用するシリンジポンプに貼り付けられているので、シリンジメーカー設定ラベルと本体で設定されているシリンジメーカーが一致していることを、必ず確認する。
【００９６】
所定時間経過後に流量・予定量・積算量の表示部１１のシリンジメーカーの数字が消えて、表示部１１に「０．０」と表示される。また動作インジケータ７はこの時、消灯している。
【００９７】
一方、シリンジの種類の表示ランプ１８は内蔵の４個の全ての表示ランプが点滅した状態で、シリンジが装着されていないことを表示してシリンジセットを促す。
【００９８】
シリンジＳのセットは以上の表示がすべて確認できたら行われる。シリンジを注入ライン（チューブ）と薬液が満たされたシリンジを無菌的な環境で行い接続したら、シリンジの本体Ｓをステージ２ａ上にセットしてクランプ５を上までいっぱいに引き上げてから、矢印Ｄ１方向に回す。すなわち、図５の要部外観斜視図に示したように、シリンジの本体Ｓをセットするためにクランプ５を上方に引き上げてから約９０度回転することで上方位置に留まることができるようになっているのでクランプ５を上に引き矢印Ｄ１方向に回す。
【００９９】
続いて、シリンジのフランジＳＦをスリット２ｃにセットするためにシリンジのフランジＳＦを、スリット２ｃに入れる。その後にシリンジの本体Ｓをシリンジステージ２ａ上にセットするようにしてから、クランプ５を矢印Ｄ１方向に回動すると、ロック状態が外れて矢印Ｄ２方向に移動されてシリンジクランプを行う。
【０１００】
続いて、スライダー組立体５０のクラッチレバー５２を押して、クラッチを解除してスライダーを移動するが、このときスライダーのクラッチレバー５２を押すと、スライダーが手で動かせるようになる。
【０１０１】
そこで、シリンジの押子ＳＰがスライダー組立体５０に当接するようにしてから、クラッチレバー５２を離すと、左右フック５３、５４が押子ＳＰを自動的に保持するようになる。即ち、クラッチレバー５２を離すと、スライダーのフックがシリンジの押子を挟み込む状態になる。
【０１０２】
この後に、上記のようにクランプ５を矢印Ｄ１方向に回して、矢印Ｄ２方向に降ろしてシリンジＳを固定する。以上のようにしてシリンジのセットが終わったら、プライミングを行う。
【０１０３】
このプライミングは、患者に穿刺する前に必ず行う必要があり、早送りスイッチ３０を押すと動作インジケータ７が回転表示されて、ポンプ動作が開示されて留置針の先端から薬液が出る。この早送りスイッチ３０を押し続け、薬液を留置針の先端まで送ると、積算量ランプ２５が点滅する。また、流量・予定量・積算量の表示部１１は早送り中は、積算量ランプ２５が点滅し、流量・予定量・積算量の表示部１１に、プライミング量が表示される。このプライミング量は、０．１ｍｌステップで積算量に加算される。ここで、積算クリアスイッチ２７を押すことにより、積算量を「０」にクリアすることもできる。
【０１０４】
このプライミングは、シリンジと本体の隙間を無くすことで本体のスライダー組立体５０の作用面がシリンジの押子ＳＰと隙間なく当接する状態にするために重要であるので、必ず行うようにする。
【０１０５】
以上のプライミングが終了したら、流量の設定を行うが、このとき先ず流量ランプ２３が点灯していることを確認する。この流量ランプ２３が点灯していない場合には、表示切換スイッチ２６を押して、流量ランプ２３を点灯させる状態にする。
【０１０６】
この後に、設定ダイヤル６を回して、１時間当たりの流量を設定するが、このとき設定ダイヤル操作の誤動作防止を図り安全を確保するために、回しはじめてから半周の間は数値が変化しないようになっている。また、半周を超えるとブザーが鳴り数値が変化する。
【０１０７】
この数値の増減は設定ダイヤル６を手前に回すと数値が減り、後ろに回すと数値は増えるようになっている。また、停止／消音スイッチ２８を押した状態で設定ダイヤル６を回すと数値は上位桁で急速に変化する。
【０１０８】
シリンジ種類と最大流量については、シリンジの種類により、設定できる最大流量が設定されており、例えば３０ｍｌのシリンジで最大流量１５００ｍｌとなっている。したがって、最大流量より大きな数値を設定し、開始スイッチ２９を押した場合には、流量設定値が点滅して、注入は開始されないようになっているので、再度、設定する。
【０１０９】
以上のようにして流量の設定が終わったら、本体１が停止状態になっていることを確認して、留置針を患者の腕等に穿刺し、すべての準備が完了したら、薬液を注入を行う。このために、開始スイッチ２９が押されると注入が開始される。動作インジケータ７が回転点灯するので薬液の注入は、回転点灯することで遠方からも確認できる。
【０１１０】
なお、シリンジを本体１にセットしてから、流量設定が終了した時点から約２分間経過しても、注入が開始されない場合には、ブザーが鳴って開始忘れを知らせる。そこで、停止／消音スイッチ２８を押すとブザーが鳴り止むようにしている。
【０１１１】
注入中に、流量の変更を行う場合は、注入の一時停止を実行して注入を停止状態にする。このために停止／消音スイッチ２８を押すと動作インジケータ７が消灯する。
【０１１２】
注入が開始された後に、積算量を確認するためには、表示切換スイッチ２６を押すと積算量ランプ２５が点灯する状態になる。すると流量・予定量・積算量の表示部１１に、注入開始からの積算量が０．１ｍｌステップで約１５秒間表示される。
【０１１３】
また、積算量をクリアしたい時は、停止／消音スイッチ２８を押して本体１を停止状態にしてから、表示切換スイッチ２６を押して、積算量を表示させて、積算クリアスイッチ２７を約１．５秒押すと、ブザーが鳴り、流量・予定量・積算量の表示部１１の積算量が「０．０ｍｌ」にクリアされる。
【０１１４】
予定した量の薬液が注入されたら、停止状態を確認して、シリンジを取り外すが、このためにクランプ５を上方に引き上げから、約９０度回す状態にして保持する。続いて、スライダー５０のクラッチレバー５２を押して、左右フック部材５３、５４を開くようにしてシリンジを取り外す。その後に、再度使用しない場合には電源スイッチ１５を約２秒以上押し続けて切る。
【０１１５】
上記の機能を備えるシリンジポンプにより十分に所望の機能が達成できるものであるが、ガンマ注入設定機能により、より効果的な薬液注入ができる。
【０１１６】
このために、先ず表示ＯＮ／ＯＦＦスイッチ１０ａを約２秒以上押し続けるとガンマ注入設定画面１０が点灯し、ガンマ注入が可能となる。続いて、項目切換スイッチ１０ｂを押すとガンマ設定画面が変化し項目切換スイッチ１０ｂを押すごとに、ガンマ量、体重、薬剤量、溶液量が点滅表示される。表示が点滅している箇所が設定変更の可能な項目となるので、所望の項目を表示した状態で設定ダイヤル６を回すことで、ガンマ設定設定画面１０上の数値を変化させて数値を設定する。また停止／消音スイッチ２８を押しながら設定ダイアル６を回すと、それぞれのステップ値が急速に変化させることができる。このガンマ注入設定画面１０は設定した、ガンマ量、体重、薬剤量、溶剤量により、流量を自動計算して、表示される。
【０１１７】
図３に示した外部通信接続コネクタ１２はシリンジポンプの状態を、外部の医療用モニターで監視するために設けられている。また、ナースコールコネクタ１３はオプションのナースコールケーブルを用いて、ナースコールと接続できるようになっている。
【０１１８】
特殊機能の設定として、本体内部の切り換えスイッチの操作により、必要に応じた各モードの設定変更が可能となっている。これらの特殊機能として流量・予定量・積算量の表示部１１の予定量を標準モードと、予定量モードに変更できるようになっている。標準モードでは、表示切換スイッチ２６を押すごとに、流量、積算量の順で表示され、予定量の設定はできなくなっている。また、本体内部の切り換えスイッチの操作によって、予定量モードに切り換えると、表示部１１の表示は、流量、予定量、積算量の順になり、予定量を設定することが可能となる。こ予定量の設定のためには表示切換スイッチ２６を押して予定量ランプ２４が点灯した状態にしてから、設定ダイヤル６を回して予定量を設定する。この設定は、０．１ｍｌステップで変更できる。予定量を設定して、注液を開始した場合において、積算量が予定量に達すると、予定量ランプ２４が点滅してブザーが鳴る。
【０１１９】
このように予定量の設定が行われた場合には、薬液の注入は、ＫＶＯ（キープベインオープン）機能は０．１ｍｌの流量で継続される。途中で確認したい場合は停止／消音スイッチ２８を押すと動作インジケータ７が点灯し、ブザーが鳴り止む。この時、キープベインオープン機能は継続しており、停止／消音スイッチ２８をもう一度押すと、動作インジケータ７が消灯し、キープベインオープン機能が解除されて停止状態になり、予定量モードでの注入が終る。
【０１２０】
再アラームは、標準モードと消音モードに変更でき、動作インジケータ７の赤色点滅し、ブザーが鳴る状態であって、ブザー消音後、２分以上アラーム状態が解除されない場合、ブザーが再度鳴るようにする標準モードと、消音モードであって、２分以上アラーム状態が続いても、再アラーム機能が作動しない状態に設定できる。
【０１２１】
開始忘れ警告は、標準モードと消音モードに変更でき、動作インジケータ７が赤色点滅し、ブザーが鳴る標準モードであって開始可能な状態で、停止状態が２分以上続いた場合、ブザーが鳴り、開始忘れを知らせるモードと、消音モードであって、停止状態が２分以上続いても、開始忘れアラーム機能が作動しないモードに設定できる。
【０１２２】
シリンジメーカーの変更は、内部切り換えスイッチにより可能としているが、この特殊機能の設定は、不注意に行うと事故発生にもなるので通常は行えないようにしている。
【０１２３】
閉塞検出圧レベルの設定とブザー音量の設定は、停止／消音スイッチ２８を押し、表示切換スイッチ２６を押して行う。先ず、閉塞検出圧レベルの設定変更は、停止／消音スイッチ２８を押しながら、同時に表示切換スイッチ２６を押すと、流量・予定量・積算量の表示部１１に「ＰｒＥＳ」と表示され、設定モードになる。そのまま停止／消音スイッチ２８を押しながら、表示切換スイッチ２６を離して、押すことで、閉塞圧設定値ランプ１９ａ、１９ｂ、１９ｃの近傍の印刷文字の「Ｌ」「Ｍ」「Ｈ」が順番に点灯するので希望する設定になったら、すべてのスイッチから指を離し、停止／消音スイッチ２８を押し、積算クリアスイッチ２７を押すことで閉塞検出圧レベルの設定ができる。
【０１２４】
また、ブザー音量の設定変更は、停止／消音スイッチ２８を押しながら、同時に積算クリアスイッチ２７を押し、流量・予定量・積算量の表示部１１に、「ｂＥＬ＊２」と表示されて、設定モードになる。そのまま停止／消音スイッチ２８を押しながら、積算クリアスイッチ２７を離して、押すことで、表示が「ｂＥＬ：１］，「ｂＥＬ：２］．「ｂＥＬ：３］とブザー音量の大、中、小に対応して変化するので希望する音量になったら、すべてのスイッチから指を離してブザー音量の設定が行う。
【０１２５】
電源集中ボックスにより、ＤＣ電源での使用もできる。この場合には、ＡＣ電源ケーブルが本体１から外れていることを確認し、本体右側面のＤＣコネクタ９にＤＣケーブルを接続する。続いて、電源スイッチ１５を入れるとＡＣ／ＤＣランプ１６が点灯してＤＣ電源が供給される。
【０１２６】
また、ＡＣ電源とＤＣ電源がどちらも供給されない場合には、自動的に内蔵バッテリーに切り換わり、ＡＣ／ＤＣランプ１６は消灯し、内蔵バッテリーで約２時間連続使用できるようになる。また、内蔵バッテリーは電源のＯＮ／ＯＦＦに拘わらず、ＡＣ電源か、ＤＣ電源が接続されている時に充電される。この充電中はバッテリーランプ１７が点灯して、バッテリーの残量を３段階のレベルで表示する。このバッテリー残量の目安としては、３個全てのランプが点灯している場合は、約８０分以上の使用が可能となり、ランプが２個点灯ときは約３０分以上の動作時間があり、ランプが１個のみ点灯している場合は、約１５分以上の使用が可能となる。３個全てが点滅している場合は、２個または１個しか点灯しない場合はバッテリーが劣化していることを示す。
【０１２７】
また、内蔵バッテリーの残量がさらに低下すると、バッテリーアラームランプ２２が点滅し、またブザーが鳴るのでＡＣ電源を接続して速やかにＡＣかＤＣの電源に接続して使用する。
【０１２８】
以上の仕様をまとめると本実施形態のシリンジポンプの動作音が静かで最悪条件でも５５ｄＢ以下であり、常用条件（０．１〜１５０ｍｌ／ｈ）では本体より１０ｍｍの位置で４７ｄＢ以下を達成できた。また、クリーニング性も良く、外層クリーニングし易く、ガーゼ，綿棒でクリーニングでき、さらにユーザーが工具を使用せず、ある程度分解洗浄できるようにできた。またメンテナンス性が容易であって、特殊工具を必要とせず、各構成部品がユニット化されているので供給が容易であり、調整が簡便でありまた内部スイッチにより、Ａ／Ｄ値を表示させ、調整確認できるように構成されている。
【０１２９】
また、ノイズマージンは例えば電気メスを近傍で使用した場合を想定して、電源インパルス；２ＫＶ，５００ｎＳｅｃ、ラジエーション；１ＫＶ，３方向を満足するようにした。さらに携帯電話（５Ｗ）を近傍で使用しても耐えるようにしてある。また、静電気ノイズマージンは１０ＫＶで誤動作せず、１５ＫＶで破損しないようにして、ノイズ規格の国内；ＶＣＩＭグループ１クラスＡと、海外；ＦＣＣ Ｐｒａｔ．１８とＣＩＳＰＲ １１（ＩＥＣ６０１−１−２）とＶＤＥＤＩＮ５７８７１を満足するようにした。
【０１３０】
電撃防護形式はＣＬＡＳＳ ＊Ｉ（３ＫＶ以上）でＴＹＰＥ ＣＦ（接地洩れ；０．５ｍＡ以下）の国内；ＪＩＳ Ｔ１００１，Ｔ１００２と海外；ＩＥＣ ６０１−１を満足するようにした。
【０１３１】
耐薬品性はアルコールで拭かないようにしたが、アルコール程度の耐薬品性を備えるように外層はＡＢＳグレードＶ０にし、かつ銘版，印刷文字，表示等が消失しないように裏側印刷する等して対処した。
【０１３２】
また駆動推力（押子を押す力）は最大で約１５Ｋｇ・ｆで約２０Ｋｇ・ｆに耐えるとともに、実測で機械（送り）精度が±１％以内の高精度にすることができ、かつシリンジの各メーカーの各種類について保証できるようにした。
【０１３３】
具体的にはスライダーの移動量を実測することで、
▲１▼流量＜１．０ｍｌ／ｈ
６０分（ｌｏｎｇ−ｔｅｒｍ）；±５％以下
▲２▼１．０ｍｌ／ｈ≦流量＜５．０ｍｌ／ｈ
２分のｏｂｓｅｒｖａｔｉｏｎ ｗｉｎｄｏｗ；±２％以下
かつ、
６０分（ｌｏｎｇ−ｔｅｒｍ）；±１％以下
▲３▼５．０ｍｌ／ｈ≦流量
２分のｏｂｓｅｒｖａｔｉｏｎ ｗｉｎｄｏｗ；±１％以下
にした。
【０１３４】
また、流量精度は±３％以内の高精度にするために各メーカーの各種類について保証できるようにして吐出量を実測した。
▲１▼１．０ｍｌ／ｈ≦流量＜５．０ｍｌ／ｈ
２分のｏｂｓｅｒｖａｔｉｏｎ ｗｉｎｄｏｗ；±５％以下
▲２▼１．０ｍｌ／ｈ≦流量
６０分（ｌｏｎｇ−ｔｅｒｍ）；±３％以下
▲３▼開始後１０分で９５％以上となることを確認した。
【０１３５】
また残量アラーム発生の目安は１０ｃｃ：０．５ｍｌ、２０ｃｃ：１．０ｍｌ、３０ｃｃ：１．０ｍｌ、５０ｃｃ：１．０ｍｌとしてある。
【０１３６】
γ量表示部１０はバックライト付き（イエロー又はグリーン）の液晶でる。各７セグメントからなる数字表示着である。体重・Ｋｇ・薬剤量・ｍｇ・溶液量ｍｌ・γ量・μｇ／Ｋｇ／ｍｉｎの表示ができ、体重；７ＳＥＧ４桁＋小数点１ＳＥＧ、薬剤量；７ＳＥＧ４桁＋小数点１ＳＥＧ、溶液量；７ＳＥＧ４桁＋小数点１ＳＥＧ、γ量；７ＳＥＧ４桁＋小数点１ＳＥＧで表示する。また通常注入モード選択のとき、全画面がバックライト消灯する。
【０１３７】
また流量・積算量・予定量表示部１１は見やすいＬＥＤ表示であり、７ＳＥＧ４桁＋小数点１ＳＥＧであってγモード設定中のとき、自動的に流量表示に切り換わる。また、γモード設定中設定値に対応し逐次流量表示が切り換わる、積算量又は予定量表示のとき、約１５秒間放置されると自動的に流量表示に切り換わるようにしている。
【０１３８】
アラームはＥｒ＊とＣＰＵ暴走とスイッチ操作とセルフチェックの時に発生するが、分かり易い音色でかつ不快感がないようにしており、さらに海外規格対応と音量３段階切り換え可能（パネル操作）とし、また設定音量の記憶と設定時の音量レベル表示を可能にしている。その最大音量は１ｍ離れて６５ｄＢ以上としてあり、さらに自励式（ＣＰＵの暴走時に発報するよう）にしている。
【０１３９】
また、音色は３周波数（２〜４ＫＨｚ程度）であってＣＰＵからＰＷＭ出力可としてあり、（アラーム→ＰＷＭ出力、ウォッチドッグ→ハード発振）するようにしてある。この音量切り換え手順は、（１）アラーム状態（電圧低下、残量を除く）のとき、切り換え不可であって積算クリアを押し、（２）停止スイッチを押しながら、スイッチを押す度に中→大→小→中→・・・と変化（ブザーは１．５秒発報する）（３）ブザーに同期して流量表示部に、７Ｓｅｇにて中＝「ｂ−２」、大＝「ｂ−３」、小＝「ｂ−１」と表示される。（４）結果をＥＥＰＲＯＭに書き込むようにしている。
【０１４０】
【発明の効果】
以上説明したように、本発明によれば、少なくとも送り出しのための動作状態を離間位置からでも認識することができるシリンジポンプを提供することができる。
【図面の簡単な説明】
【図１】シリンジポンプ本体１の外観斜視図である。
【図２】図１の本体１の右側面図である。
【図３】図１の本体１の左側面図である。
【図４】操作パネル部２ｆの平面図である。
【図５】（ａ）本体１の上カバー２の要部外観斜視図である。（ｂ）クランプ５の要部断面図である。
【図６】（ａ）シリンジセット準備のためのクランプ５の動作説明図である。（ｂ）シリンジセットのクランプ５の動作説明図である。
【図７】スライダ送り機構の外観斜視図である。
【図８】スライダ送り機構の動作説明の外観斜視図である。
【図９】（ａ）スライダ組立体５０の外観斜視図である。（ｂ）カバー５５を取り外して示した外観斜視図である。
【図１０】図９（ｂ）の正面図である。
【図１１】スライダ組立体５０の外観斜視図である。
【図１２】スライダ組立体５０の正面図である。
【図１３】スライダ組立体５０の背面図である。
【図１４】スライダ部品６５のみ省いて示した動作説明のための要部断面図である。
【図１５】スライダ部品６５のみ省いて示した動作説明のための要部断面図である。
【図１６】スライダ部品６５とプレートカム部品６４とストッパー部品５７との相互関係を示した外観斜視図である。
【図１７】通信コードである。
【図１８】接続状態のブロック図である。
【図１９】設定ダイヤルの中心断面図である。
【図２０】設定ダイヤルの分解斜視図である。
【図２１】設定ダイヤルの動作説明図である。
【図２２】図１９のＸ‐Ｘ矢視断面図である。
【図２３】ホールＩＣ７１が接続されたブロック図である。
【図２４】内蔵されたブザーの動作対応図表である。
【符号の説明】
１…シリンジポンプ本体、２…上カバー、３…下カバー、４…ラバーシール、５…クランプ、６…設定ダイヤル、７…動作インジケータ、７ａ〜７ｄ…発光ダイオード、８…ＡＣインレット、９…ＤＣ電源コネクタ、１０…ガンマ設定表示部、１１…流量・予定量・積算量の表示部、１２…外部通信コネクタ、１３…ナースコールコネクタ、１５…電源スイッチ、１６…ＡＣ／ＤＣランプ、１７…バッテリーランプ、１８…シリンジ表示ランプ、１９ａ〜１９ｃ…閉塞ランプ、２１…残量アラームランプ、２２…バッテリーアラームランプ、２３…流量ランプ、２４…予定量ランプ、２５…積算量ランプ、２６…切り換えスイッチ、２７…積算クリアスイッチ、２８…停止／消音スイッチ、２９…開始スイッチ、３０…早送りスイッチ、３３…スライダ送り機構、３４…ベース、３５…モータ（エンコーダ付き）、３６…ギアトレイン、３７…リードネジ、３８…案内シャフト、３９…クラッチセンサー板、４０…パイプシャフト、４１…ブロック、４２…ブッシュ、４３…インナークラッチシャフト、４４…ナットホルダー、４５…ハーフナット、４６…センサー、４８…ガイドブッシュ、５０…スライダ組立体、５１…ブーツ、５２…クラッチレバー、５３…右フック、５４…左フック、５５…カバー、５７…ストッパー部品、６０…スライダベース、６１…ピン、６２…トーションバネ、６３…引っ張りバネ、６４…プレートカム部品、６５…スライダ部品、６７…プレート、７０…永久磁石、７１…ホールＩＣ、７２…埋設シャフト、７３…金属ブッシュ、７４…磁性体リング[0001]
TECHNICAL FIELD OF THE INVENTION
According to the present invention, the contents of a syringe are held by detachably holding various different syringes in an immovable state, setting a pusher of the syringe in an immovable state with respect to the slider means, and then driving the slider means in a predetermined manner. More particularly, the present invention relates to a syringe pump that automates a considerable amount of operation.
[0002]
[Prior art]
Syringe pumps are intended mainly for performing high-precision drug supply such as nutritional supplementation, blood transfusion, chemotherapeutic agents, and anesthetics in ICUs, CCUs, and NICUs. It is frequently used because it is superior to pumps of the type.
[0003]
The usage method is to set the syringe with the chemical liquid in the immobilized state using the clamp of the syringe pump, then set the syringe presser on the slider, and then drive the slider It is a device for accurately sending out the contents in a syringe by the piston movement of a pusher, and has been put to practical use because of its simple structure and relatively high accuracy.
[0004]
[Problems to be solved by the invention]
However, when using syringes having different volumes, for example, when injecting a patient for a long time using a 50 cc syringe, it is difficult for a busy nurse to stay close to the patient. It becomes.
[0005]
Usually, since a large number of patients are monitored by one person, it is not possible to grasp the operation status of all the pumps or other medical devices by overlooking all of the syringe pumps fixed to the bed.
[0006]
Therefore, the present invention has been made in view of the above-described problem, and has as its object to provide a syringe pump that can recognize at least an operation state for feeding even from a separated position.
[0007]
[Means for Solving the Problems]
According to the present invention, in order to solve the above-described problems and achieve an object, the present invention provides a syringe pump including an operation indicator for sending out a drug solution and recognizing an operation state for sending out even from a separated position. The indicator is located at a position that is easy to see from the outside of the syringe pump. At It is provided so as to protrude upward, blinks and displays different display colors according to the operation state, and performs a temporary stop of the injection to stop the injection, so that it is turned off. I have.
[0008]
In addition, the syringe pump includes a recognition unit that sends out the liquid medicine and recognizes an operation state for sending out even from a separated position, wherein the recognition unit is located at a position that is easy to see from the outside of the syringe pump. At It is provided so as to protrude upward, blinks and displays different display colors according to the operation state, and performs a temporary stop of the injection to stop the injection, so that it is turned off. I have.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is an external perspective view of the syringe pump 1, showing the setting dial 6 normally operated with a right hand, with the operation panel 2f facing forward.
[0011]
In this drawing, this syringe pump 1 is a micro continuous infusion pump for the purpose of nutrition supply, blood transfusion, infusion of a chemotherapeutic agent, an anesthetic, etc. in an ICU, CCU, NICU. An operation panel 2f for performing the operation is provided so as to be substantially concentrated on the upper surface as shown in the figure, thereby improving operability.
[0012]
The operation panel 2f is basically covered with an embossed sheet cover, and has a drip-proof design that satisfies the JIS0920 drip-proof test. For example, it is possible to easily wipe inadvertently spilled chemicals and the like. As well as being highly drip-proof, it is possible to prevent a chemical solution or the like from entering the inside.
[0013]
For this purpose, the upper cover 2 and the lower cover 3 are integrally formed from a molded resin material having chemical resistance, and a rubber seal 4 made of, for example, a silicone elastomer is interposed on the connecting surfaces of the covers 2 and 3. By adopting a configuration in which screws are used, a foreign substance such as a liquid is prevented from entering the inside.
[0014]
In addition, it is possible to realize precise injection operation control by microcomputer in order to emphasize high precision of injection and improvement of operability, and the operation indicator 7 protruding upward at a position that is easy to see from the outside is red or Lighting, blinking, and rotating lights are displayed in multiple colors in green, so that the operating state and alarm state can be monitored from a distance to ensure safety. Furthermore, a buzzer is built in, and various alarm functions for safety are provided.
[0015]
In addition, since it is small and lightweight, it is designed to be easy to carry and convenient to use even when a plurality of units are used at the same time. Further, by turning the setting dial 6 on the right side of the apparatus, it is possible to set a numerical value according to the rotation speed and the rotation direction in a short time, while displaying the set value on the display unit 11 of the display panel. Thus, when the setting of a numerical value such as a flow rate is changed, the setting dial 6 can be easily operated with one action by operating the setting dial 6.
[0016]
Furthermore, it has a shape that can be used multiple times (multiple use) and a design that is easy to use and can be further built up. The shape and dimensions are small, for example, height H: 110 mm × width W: 322 mm × depth D: 115 mm The volume ratio is 80% or less, the weight is about 2.0 kg, and the power source is an AC commercial power source, a built-in battery, and DC12VA.
[0017]
The built-in battery has a charging time of 24H (hour), and is covered with a lid at the bottom of the lower cover 3 so as to be easily replaceable from the outside, is connected to a connector, and is detachably provided. The replacement life is set to three years or more, while the charge control is trickle charge. Furthermore, overdischarge and prevention of charging are realized by detecting the cell breakage of the rechargeable battery and taking measures to prevent cell breakage. Then, a heat-resistant (Ni-Cd) battery is used, and a new battery can be operated for 120 minutes or more until an alarm is generated and for 150 minutes or more before shutdown.
[0018]
Further, a display unit 10 for gamma injection and display units 11 for flow rate, planned amount, and integrated amount are provided on the operation panel 2f, while the setting dial 6 can be easily removed for cleaning. The concave portion 6e is formed as described above, and it is configured such that a toe can be inserted into this portion and moved to the outside while rotating to be removed.
[0019]
Next, in order to set the main body S of the syringe, the upper cover 2 is integrally injection-molded with a syringe stage 2a and a slit portion 2c in which a flange portion SF formed integrally with the main body of the syringe is set. The clamp column 2b (shown by broken lines) that rotatably supports the clamp 5 is also integrally formed.
[0020]
The slider assembly 50 driven in the direction of arrow A4 in the drawing reciprocates on the concave portion 2d of the case, while the end portions of the pipe shaft and the inner clutch shaft described later with respect to the slider feed mechanism shown by the broken line. And the pusher SP can be easily attached or detached by manually operating the clutch lever 52 of the slider assembly 50.
[0021]
Next, FIG. 2 is a right side view of the main body 1 of FIG. 1. In this figure, the same reference numerals are given to the components already described and the description is omitted. A power connector 9 and an AC inlet 8 are provided side by side.
[0022]
FIG. 3 is a left side view of the main body 1 of FIG. 1. An external communication connector 12 is provided on the bottom of the side surface of the lower cover 3 and is connected to an external communication function described later, for example, an external medical monitor. External communication function, and blockage detection and motor drive can be remotely controlled. A nurse call connector 13 for a nurse call is juxtaposed next to the external communication connector 12, which is connected to a nurse call connection terminal near a bed when installed in a hospital to notify a nurse of occurrence of an abnormal state. So that they can be informed.
[0023]
As shown in FIG. 3, a female screw portion 14 (shown by a broken line) for fixing to the pole P with the clamp N is insert-molded in the lower cover 3.
[0024]
FIG. 4 is a plan view of the operation panel unit 2f. In this figure, a power switch 15, an AC / DC lamp 16, and a battery lamp 17 are centrally arranged at the left end. A gamma setting display unit 10 is provided next to these lamps, but some models do not have this gamma setting display unit 10 because they are sufficiently usable. The gamma setting display section 10 is provided with a display on / off switch 10a and an item changeover switch 10b.
[0025]
On the other hand, when the clamp 5 is set on the display unit 10, the amount of vertical movement of the clamp is converted into an electric signal, and then the syringe diameter is automatically measured to set the syringe volume 10cc. (Ml), 20 cc (ml), 30 cc (ml), and 50 cc (ml) are provided with a syringe display lamp 18.
[0026]
An operation indicator 7 is provided below the clamp 5 so as to project upward from a transparent acrylic resin or the like, and has a built-in light emitting diode 7a that appropriately emits red and green light. 7d is lit or blinked, or light is scattered inside so as to rotate in the direction of the arrow shown in the drawing, so that the injection operation state can be displayed electronically.
[0027]
Adjacent to the clamp 5, there are provided display lamps 19a, 19b, and 19c for switching and displaying the set detection pressure by the blockage detection mechanism provided in the syringe pump in three stages. Next to these lamps, a remaining amount alarm lamp 20, a battery alarm lamp 22, and others are intensively arranged.
[0028]
Adjacent to these lamps, a 7-segment LED display unit 11 having flow rate / planned amount / integrated amount lamps 23, 24, 25 is provided. A display changeover switch 26 and an accumulation clear switch 27 are provided on the right side of the display unit 11. A fast-forward switch 30, a start switch 29, and a stop / mute switch 28 are provided below the display unit 11.
[0029]
In the above configuration, as shown in the main part perspective view of FIG. 5A and FIG. 6 and the cross-sectional view of the main part of the clamp 5 of FIG. The spline is fitted to the vertical projections 2b-1, 2b-2, 2b-3 of the clamp support 2b by turning up about 90 degrees in the direction of arrow D4 after pulling up to the arrow D3 (FIG. 6 (a)). The clamp 5 held in this state can stay at the upper end of the clamp column against a tensile force (not shown).
[0030]
Subsequently, the flange SF of the syringe is inserted into the slit 2c to set the flange SF of the syringe in the slit 2c. After that, after setting the syringe main body S on the syringe stage 2a, when the clamp 5 is rotated in the direction of arrow D1 (FIG. 5A), the locked state is released and the arrow D2 in the figure is released. Direction to clamp the syringe.
[0031]
The above-mentioned slit 2c and the syringe stage 2a are further integrally formed with smaller-diameter circular arc grooves 2a-2, 2a-3, and 2a-1 as shown in the figure, so that the small-capacity small-diameter syringe is immobile. So that it can be held. Thus, the setting of the syringe is completed.
[0032]
Subsequently, the clutch is released to move the slider. At this time, when the clutch lever 52 of the slider assembly 50 shown in FIG. 1 is pressed, the slider can be moved by hand.
[0033]
When the clutch lever 52 is released after the presser SP of the syringe comes into contact with the slider assembly 50, the left and right hooks 53 and 54 automatically hold the presser SP of the syringe S. That is, when the clutch lever 52 is released, the hook of the slider is in a state of pinching the pusher of the syringe. The above is the basic set operation.
[0034]
7 and 8 are external perspective views of the slider feed mechanism built in the upper cover 2. FIG. In both figures, a left and right wall surface 34a (one of which is not shown) is integrally formed on a base 34 made of zinc die-casting and having excellent rigidity and vibration proofing, and a gear train 36 is fixed to one end. Each of the lead screw 37, the inner clutch shaft 43, and the guide shaft 38 is supported in a space between the left and right wall surfaces 34a (one of which is not shown), and the lead screw 37 is rotatably driven by a bearing (not shown). Supported.
[0035]
A pipe shaft 40, which is made movable in the direction of arrow A4 by a guide bush 48, is slidably guided coaxially on the inner clutch shaft 43. The guide shaft 38 is fixed to the base 34 in a stationary state. At the end of the pipe shaft 40, a block 41 to which a bush 42 made of polyacetal resin, which is inserted into the guide shaft 38 to prevent rotation, is fixed. A nut holder 44 is fixed to a half nut block 45, which is always urged to the inner clutch shaft 43 in the direction of the dashed arrow A1 in the drawing, so that the teeth 45a always mesh with the teeth of the lead screw 37. Only when the inner clutch shaft 43 is rotated in the direction of the solid arrow A3, the inner clutch shaft 43 is in the free state in which the meshing state is released, and can freely move in the direction of the arrow A5. . A clutch sensor plate 39 is pivotally supported on the guide shaft 38.
[0036]
The slider feed mechanism 33 is further provided with a blockage detection mechanism. The configuration of the slider feed mechanism 33 is such that the rotation of the motor 35 having the encoder fixed to its output shaft is transmitted through a gear train 36 to the final gear fixed to the lead screw 37 which is a feed screw, so that the nut holder 44 By moving and pressing the pusher SP of the syringe, the medicinal solution contained therein can be injected. At this time, the nut holder 44 attempts to move in the feed direction, but the syringe S and other The force acting in the opposite direction is generated by the action of the resistance in the infusion flow path.
[0037]
In this way, the generated force receives a reaction force in the opposite direction to the feed direction due to the meshing state of the half nut 45 fixed to the nut holder 44 and the seed screw 37. As a result, the entire feed screw moves in the reverse direction, and the force is transmitted to the force sensor at the distal end portion of the feed screw via a lever (not shown).
[0038]
In this way, the transmitted force becomes the deflection of the force sensor, converts this mechanical deflection into an electrical output, and stores it in a certain set value (E2PROM, where half-width 2 indicates superscript). Is reached on the operation indicator 7 and an alarm sound (buzzer) is generated (sounds).
[0039]
In addition, the load setting resulting from the resistance in the syringe and the other infusion channel is switched and displayed in three stages by three display lamps 19a, 19b, and 19c provided on the display panel on the upper cover 2. The load set value is as follows.
[0040]
(1) H (high); (800 ± 200 mmHg)
(2) M (medium); (500 ± 100 mmHg)
(3) L (small); (300 ± 100 mmHg)
The blockage detection mechanism also considers the sliding resistance of the syringe, and detects each manufacturer and the type of syringe volume (50 cc, 30 cc, 20 cc, 10 cc) and automatically corrects it based on the sliding resistance of the syringe. In an exchange memory (E2PROM) inside the CPU, the sliding resistance data of the syringes of ten companies is stored in advance, so that an arbitrary manufacturer can be set.
[0041]
On the other hand, the remaining amount detection mechanism is an important function when the remaining amount becomes low during the operation. The pump continues to operate, the block 41 and the nut holder 44 are moved, and the pusher SP of the syringe is moved. When it reaches an arbitrary position, a metal fitting (not shown) fixed to the block 41 fixed to the pipe shaft 40 comes into contact with a lever of a potentiometer fixed inside the upper cover 2 of the main body. When the movement is further continued from the contact state, the value of the potentiometer reaches a predetermined value stored in advance. At this time, an alarm indicating an abnormal state is displayed on the operation indicator 7 and an alarm sound is generated to display a remaining amount alarm.
[0042]
As described above, when the operation of injecting the chemical liquid by the pump is completed, the pump moves in the direction opposite to the feed direction, the slider is returned to the initial position, and the lever of the potentiometer is moved by the tension spring connected to the lever. It is configured to return to an initial position by force. Further, the clutch disengagement detection mechanism determines whether the clutch lever 52 is erroneously gripped during the pumping operation and the meshing state of the half nut 45 and the lead screw 37 constituting the clutch is cut off, or the action of some load is applied. For example, when the same occurs, an alarm sound is generated and the operation indicator 7 notifies an abnormality.
[0043]
Therefore, when the clutch lever 52 of the slider assembly 50 is gripped, the half nut 45 is rotated via the pipe shaft 40 in the direction opposite to the dashed arrow A1 shown in FIG. The threaded portion 37a and the threaded portion 45a of the half nut 45 are configured so as to be out of engagement.
[0044]
Further, when the half nut 45 is rotated in this way, the clutch sensor receives an urging force by an urging means (not shown) so that the sliding surface 39c always comes into contact with the sliding surface 45c of the half nut 45. The plate 39 is rotated at the same time, and the lever sensor 39b at one end of the clutch sensor plate 39 is a photosensor (transmission type) 46 fixed inside the upper cover. When the plate 39 rotates, light is transmitted, and an alarm is displayed by detecting the light.
[0045]
In FIG. 8, when the motor 35 is driven to move the pusher, the lead screw 37 is driven to rotate, and the nut holder 44 fixing the half nut 45 meshing with the lead screw 37 is moved in the direction of arrow B1. Therefore, the pipe shaft 40 is also moved in the direction of arrow B2, and the slider assembly 50 is moved. At this time, the lever portion 39b at one end of the clutch sensor plate 39 shields the photo sensor (transmission type) 46 from light.
[0046]
Next, for the holding of the syringe cross-sectional area data, the syringe cross-sectional area data for ten companies is stored in an exchangeable memory (E2PROM) inside the CPU, and the manufacturer can be set arbitrarily. In addition, a battery failure detection mechanism is provided to enable detection of breakage in a short mode of two or more cells of the battery. Further, a γ (gamma) injection, a predetermined amount injection, an alarm / drive state display are provided, and the alarm is a three-dimensional display. In the drive state, the LED lighting portion is rotated.
[0047]
In the battery remaining amount display, the remaining amount of the battery is displayed on the battery lamp 17 in three stages. Conventionally, detection of the remaining battery level is performed based on the battery voltage. However, the present apparatus detects the remaining battery level with higher accuracy by integrating the current.
[0048]
The setting dial 6 is a so-called jog type in which three concave portions 6a are provided on the side surface, and the finger is inserted into these concave portions 6a and then rotated. The setting dial 6 is a non-contact type and an endless encoder type that detects the rotation of the dial. The setting dial 6 can be rotated at a high speed after a fingertip is inserted into the concave portion 6a, and is set in accordance with the rotation angle. While being considered so that settings can be made, it can be easily attached and detached as necessary, and if the syringe contents liquid leaks onto the pump device, it can be washed with water like other operation panels with sufficient drip-proof measures Like that. When the setting dial 6 is rotated clockwise, various setting values are increased, and the setting is displayed on the display unit 11 shown in FIG. Similarly, when the setting dial 6 is rotated counterclockwise, the setting value is displayed on the display unit 11 so as to decrease.
[0049]
Specifically, when the display changeover switch 26 provided on the display panel of FIG. 4 is pressed, the flow lamp 23, the planned amount lamp 24, and the integrated amount lamp 25 are sequentially turned on so that each setting can be performed. Has become.
[0050]
Therefore, when setting the flow rate, the display changeover switch 26 is pressed so that the flow rate lamp 23 is turned on, and then the setting dial 6 is rotated. As a result, the set values are displayed on the display unit 11. The display range is 0.0 to 1200 ml / h (up to 999.9: 0.1 ml / h step) (1000 to 1 ml / h step). The range can be set. It also guarantees each type of syringe from each manufacturer. Also, when the flow rate set value is “0”, the buzzer issues a one-shot alert so that it cannot be started. Further, even when the flow rate set value exceeds the flow rate range in which the drive can be performed, the buzzer does not issue a one-shot notification to start.
[0051]
Further, in order to set the integrated amount, after pressing the display changeover switch 26 to turn on the integrated lamp 25, the user turns the setting dial 6 while looking at the display unit 11 shown in FIG. Set. At this time, the display range of the integrated amount is 0.0 to 999.9 ml (0.1 ml steps), and the minimum flow rate is 0.0, and the encoder is fixed to the output shaft of the motor 35. While accumulating from the pulse count value, a fast-forward amount that is fast-forwarded after the fast-forward switch 30 is pressed is added.
[0052]
The injection amount is set as follows: body weight: 0.0 to 300.0 kg (0.1 kg step), drug amount: 0.0 to 300.0 mg (0.1 mg step), solution amount: 0.0 to 300. 0 ml (0.1 ml step), γ amount: 0.00 to 50.00 γ (μg / Kg / min) (0.01 γ step).
[0053]
Then, the minimum flow rate is displayed from 0.0, and when the body weight, drug amount, solution amount, and γ amount are input, the flow rate is automatically calculated and displayed, so that it can be started at the displayed flow rate. Has become. When the calculation result deviates from the settable flow rate (0.1 ml / h or more, 1200 ml / h or less), the display of the flow rate on the display unit 11 becomes “−−−−” other than a numeral. Before and after this, the buzzer issues a one-shot alert so that the pump operation cannot be started.
[0054]
On the other hand, when the calculation result is within 1200 ml / h, the calculation result is displayed. When the calculation result is 300.1 ml / h or more and the syringe type is automatically detected as 10 to 30 cc, Is designed to prevent the buzzer from emitting a one-shot and starting even if the start switch 29 is pressed.
[0055]
Next, when the fast-forward switch 30 is pressed, the flow rate of the liquid is increased, and 1200 ml / h for a 50 cc syringe, 500 ml / h for a 30 cc syringe, 400 ml / h for a 20 cc syringe, and 10 ml for a syringe. Is sent at 300 ml / h.
[0056]
The display range of the scheduled amount setting is 0.0 to 999.9 ml (0.1 ml steps), and the minimum flow rate is 0.0, and the operation can be selected by an internal selection switch. When the scheduled amount = 0.0, when the start switch 29 is pressed, the buzzer issues a one-shot alarm and the scheduled amount lamp 24 of the scheduled amount LED blinks so that the start cannot be started. When the scheduled amount <= integrated amount, the LED of the scheduled amount lamp 24 flashes and a buzzer is sounded so that the operation cannot be continued. Also, when the scheduled amount <= integrated amount during injection, the LED of the scheduled amount lamp 24 flashes, a buzzer is sounded, and the operation automatically switches to the KVO operation. At this time, since the flow rate is displayed in KVO (0.1 ml / h), the sound is muted when the stop / mute switch 28 is pressed once. There is a re-alarm during the continuation of the KVO operation, and the operation stops when the stop switch 28 is pressed again.
[0057]
On the other hand, the initial display at the time of turning on the power to the apparatus is “0” ml in a mode other than the memory mode.
[0058]
Next, FIG. 9A is an external perspective view of the slider assembly 50, and FIG. 9B is an external perspective view with the cover 55 removed. FIG. 10 is a front view of FIG. 9B.
[0059]
First, in FIG. 9, the slider assembly 50 is fixed at the end of the inner clutch shaft 43 and the end of the pipe shaft 40 of the slider feed mechanism 33 so as to removably hold various syringes in an immovable state. It has an important function to accurately deliver the syringe contents by driving. A boot 51 is put on the pipe shaft 40.
[0060]
In FIG. 9, a pair of left and right hook members 53 and 54 having a substantially L-shape and an inverted L-shape, which are opened and closed in synchronization with arrows B3 and B4 in order to grip the pusher, are gripped by the pusher. In the side surface portion of the base to be formed, it is rotatably supported by rotating parts 53k and 54k, respectively.
[0061]
These left and right hook members are formed with first arm portions 53-1 and 54-1 and second arm portions 53-2 and 54-2 as shown in the figure, and second arm portions 53-2 and 54-2. 2 are provided with grooves 53a and 54a shown in FIG. 10 so as to be inserted into the pins 61. When the pins 61 are moved in the direction of arrow B2 by pressing the clutch lever 52 in the direction of arrow B1, left and right sides are provided. The hook members 53 and 54 are configured to open in synchronization with the directions of arrows B3 and B4. From the above, it can be understood that the operation of the clutch lever 52 opens the left and right hook members 53 and 54.
[0062]
Also, in FIG. 9A, a projection 55a provided for mounting the presser on the side surface portion of the cover 55 is provided so as to form at least one step, and the presser different in size is mounted. This makes it possible to prevent the pusher from falling downward.
[0063]
FIG. 11 is an external perspective view of the slider assembly 50 as viewed from the rear side. FIG. 12 is a front view showing the clutch lever 52 of FIG. 11 removed, and FIG. 13 is a front view of FIG. 11. The same reference numerals are given to the already described components, and the description will be omitted. A tension spring 63 is stretched between a slider component 65 slidably provided on the base 60 and a hook portion 52d of the clutch lever 52, and the left and right hooks are actuated by the action of the pins 61 implanted in the slider component 65. The members 53 and 54 are urged to be always closed.
[0064]
Further, a cam groove 52a (shown by a broken line in FIG. 13) into which the projection 64a of the plate cam component 64 provided slidably in the slider component 65 enters is formed in the clutch lever 52. Is manually rotated in the direction of arrow B1 to move the plate cam component 64 in the direction of arrow B9.
[0065]
A pin 58 which is a stopper part 57 whose one end is urged to always protrude by the action of a torsion spring and slides on a sliding surface 64g of the plate cam part 64 is press-fitted into a side surface part of the base 60. A component 57 is provided to penetrate the plate cam component 64.
[0066]
On the other hand, in FIG. 13, an end portion of the inner clutch shaft 43 shown by a broken line is formed with a locking portion 43 e which is cut in parallel, and a plate 67 made of a thick stainless steel plate is formed on the locking portion 43 e. The adjusting bolt 77 fixed to the plate 67 is fixed by a screw 66 so that the adjusting bolt 77 comes into contact with the rotation of the clutch lever 57. The clutch lever 52 is rotatably supported around the pipe shaft, and a screw 66 is set in its long groove 52c.
[0067]
FIG. 16 is an external perspective view showing a mutual relationship among the slider component 65, the plate cam component 64, and the stopper component 57. In this drawing, the slider component 65 is built in the slider base 60 so as to be able to move up and down, while the pin 61 is insert-molded and the tension spring 63 is urged to move in the direction of arrow C. Does not act, it is moved in the direction of arrow C1 to move the left and right hook members 53, 54 engaged with the pin 61 to close.
[0068]
When the protrusion 64a is moved in the direction of arrow B9 by the movement of the clutch lever 52, the contact surface 64c of the plate cam component 64 comes into contact with the contact surface 65a of the slider component 65, and the slider component The left and right hook members 53 and 54 are opened by the action of the pin 61 by being moved in the direction of the arrow B9 together with 65.
[0069]
On the other hand, the stopper component 57 is provided with a press-fit pin 58 that is inserted through the opening 64k and slides over the sliding surface 64g of the plate cam component 64 to prevent it from falling off. Is configured to restrict the movement of the slider component 65 when the slider falls.
[0070]
14 and 15 are cross-sectional views of the main part, in which only the slider part 65 is omitted. In both figures, when the hook members 53 and 54 are opened by operating the clutch lever 52, the clutch lever 52 is opened. The movement is transmitted to the inner clutch shaft 43 via the plate 67, and the slider assembly 50 is disengaged from the slider feed mechanism 33, so that the slider assembly 50 moves in the longitudinal direction.
[0071]
On the other hand, when the syringe is set on the slider base 60, the press-fit pin 58 of the stopper part 57 falls into the step 64t, disabling the operation of the clutch lever 52 and closing the hook members 53, 54. Moving. At this time, the slider assembly 50 is configured so as to be engaged with the slider feed mechanism 33.
[0072]
Next, FIG. 17 shows a communication code, and FIG. 18 is a block diagram of a connection state. In both figures, it is possible to switch between RS-232C and RS-485 by a switch inside the main body. The transmission speed can be changed in the range of 4800 bps to 19200 bps by operating a switch on the main body panel.
[0073]
The synchronization method is a start-stop synchronization method. As shown in FIG. 17, the start bit is 1 bit, the data bit is 8 bits (LSB first), there is no parity bit, and the stop bit is 1 or 2 bits (2 bits at factory shipment). ), And can be switched by a switch operation.
[0074]
When the transmission procedure sends a command from the external medical monitor to the syringe pump, the syringe pump starts responding. At this time, the syringe pump does not return any response when the received content is not addressed to itself. When the syringe pump cannot receive the communication end code (ETX), the syringe pump maintains the standby state. When the communication start code (STX) is received before receiving the ETX, even if the response received later is normal, it is treated as a phase error.
[0075]
However, (1) when the waiting time exceeds 3 seconds, and (2) when "STX to ETX" not addressed to itself is received, the received data up to that time is invalidated.
[0076]
The transmission timing of "reception → transmission" of the syringe pump is as follows: reception completion → preparation start time of the transmission unit is 40 ms or more, transmission preparation start time → transmission start time is 10 ms or more, transmission completion → transmission preparation end time It is 20 ms or more.
[0077]
Further, the transmission code is set to the communication start code (STX): FFH, the communication end code (ETX): OOH, and the address is set to the corresponding number: 31H.
[0078]
The ID number can be set by an arbitrary eight-digit number (00000000 is set at the time of shipment from the factory).
[0079]
The sequence numbers are as follows.
[0080]

In the syringe pump, if the sequence number is the same as the previously received number, no processing is performed, and the one returned as the previous response is retransmitted. However, if the sequence number is 0, the instruction is unconditionally processed. . The same sequence number as the received sequence number is used in the response from the syringe pump.
[0081]
The sequence number of the communication error uses FFH (255).
[0082]
The command is set so that 01H requests syringe pump main body internal information, the auxiliary command requests basic operation state at 00H, gamma information at 01H, and scheduled amount information at 02H.
[0083]
FIG. 19 is a center sectional view of the setting dial. FIG. 20 is an exploded perspective view of the setting dial 6. The same reference numerals are given to the components already described and the description is omitted. In both figures, the setting dial 6 is injection-molded from a resin material satisfying almost the same specifications as those of the covers 2 and 3 described above. At the center of rotation, a bearing portion (metal bush) 73 made of an oil-containing metal or the like and having excellent durability is integrally provided by insert molding or the like.
[0084]
Further, 16 permanent magnets 70 magnetized so as to have different polarities in the thickness direction are built therein at equal intervals, and are covered with a plastic sheet 75. Alternatively, as shown in FIG. 20, a plastic sheet 75 formed in a hat shape in advance is put on, so that the permanent magnet 70 is not directly exposed to the outside, and care is taken not to rust during washing. . Also, the permanent magnet magnetic material may be formed of an elastomer such as rubber dispersed therein.
[0085]
On the other hand, an embedded shaft 72 for rotatably supporting a bearing (metal bush) 73 is implanted on the upper case 2 side, and the bearing (metal bush) 73 of the setting dial 6 is detachable. In the inserted state, as shown in FIG. 19, the permanent magnet 70 is provided with a Hall IC 71 disposed on the side surface of the upper case 2 and a paramagnetic material such as iron, steel, cobalt, nickel or the like. The magnetic material ring 74 is formed at a position facing the convex portion 74a of the magnetic ring 74 made of an elastomer such as a dispersed plastic magnet.
[0086]
When the setting dial 6 is mounted as shown in FIG. 19, the dimension between the Hall IC 71 fixed to the upper cover 2 and the side portion of the magnetic ring 74 and the permanent magnet 70 is as shown in FIG. The end surface of the metal bush 73 is in contact with the upper cover so as to achieve a proper positional relationship.
[0087]
Next, FIG. 22 is a cross-sectional view taken along the line XX of FIG. 19, and shows only the Hall IC 71 and the magnetic ring 74. In this figure, the magnetic material ring 74 is integrally formed with ten convex portions 74a as shown in FIG. Further, the Hall IC 71 is disposed in a portion opened by a semicircle. As described above, the permanent magnets 70 of which 16 are arranged at equal intervals are provided on the Hall IC 71 and the convex portion 74 a of the magnetic ring 74. On the other hand, suction and turning on / off of the Hall IC 71 can be performed facing each other. Further, the pitch at which the convex portions 74a are provided and the pitch at which the permanent magnets 70 are provided are made different from each other so that the setting dial 6 is attracted to each other so that a sense of click resistance is generated when the setting dial 6 is rotated. Therefore, in a normal state, the magnetic ring 74 and the permanent magnet function as means for preventing the setting dial 6 from dropping off the fixed shaft.
[0088]
FIG. 23 is a block diagram to which the Hall IC 71 is connected. As shown in the figure, two Hall ICs 71 are connected to the main board 101 via a connector 103, supply power of 5 VDC, and provide an A phase and a B phase between each Hall IC 71. As a means for detecting the generated bias voltage change as an output having a phase difference of about 90 degrees and inputting the output to a port of the CPU 102, the rotation direction and the number of rotations (rotation angle) accompanying the rotation operation of the setting dial 6 are detected. Enables action.
[0089]
In the above configuration, when the setting dial 6 is not operated for a while, the setting value is not changed in the first rotation of 180 degrees when the setting dial 6 is rotated, and the setting dial 6 is erroneously rotated. We are dealing with when it was done. When the rotation angle exceeds 180 degrees, a buzzer for confirmation is generated, and the value counted in a certain cycle is n counts and n cycles so that the set value changes according to the rotation direction and the number of rotations. In the above case (n is an integer), the numerical value of the upper digit is changed. When the setting dial 6 is turned while the stop / mute switch 28 is pressed, the numerical value of the upper digit changes. For example, when the set value is changed every ml, the set value is changed every 10 ml in 10 ml steps, and the set value is changed in 100 ml steps.
[0090]
The setting dial 6 configured as described above can be cleaned by removing it. However, as shown in FIG. First, the groove on the upper part of the syringe pump body and the recess 6e of the setting dial 6 are made to coincide. Put a nail or fingertip between the main body and the recess 6e of the setting dial. Next, the setting dial 6 is pulled in the direction of the arrow while swinging the setting dial 6 left and right, and the setting dial 6 is removed from the main body 1. Thereafter, the main body, the buried shaft 72 and the setting dial 6 are wiped or washed with water. When the cleaning is completed, the setting dial 6 is inserted until the setting dial 6 reaches the base of the embedded shaft 72 of the main body 1.
[0091]
Lastly, FIG. 24 is a chart showing the operation of the built-in buzzer. A ringing pattern and a sounding interval are generated as shown in the chart by synchronizing with the operation indicator 7, and the user is notified and recognized. Let it do. In the table, "three sounds" means that three sounds "pea, pea, pea" continue. The same applies to “five sounds”. In addition, the priority of the sound is basically (a) occurrence of blockage, disengagement of a syringe, disengagement of a clutch, and (b) battery voltage drop (2 minutes, 4 minutes, 6 minutes, 8 minutes, 10 minutes, 10 minutes, Minutes or more), (c) the remaining amount alarm, and (d) the forgot-to-start sound. When multiple alarms are generated, the alarms are sequentially switched to higher ones. Similarly, when multiple alarms occur during silencing, a high-priority alarm is issued, and key clicks and one-shot alarms are issued during intermittent occurrences such as a forgotten sound. Is designed to interrupt and ring.
[0092]
On the other hand, referring to FIG. 4 again, the operation of the operation indicator 7 is as follows: (a) During normal operation, the built-in light emitting diodes 7a to 7d turn green at four different speeds corresponding to the set flow rate. Flashes sequentially in the direction of rotation. (B) While the operation is stopped, the green light goes off except for the red lighting at the time of the alarm. (C) When the user forgets to start, all the light emitting diodes 7a to 7d blink red. (D) When an external communication is received, it blinks green for a moment.
[0093]
When the usage description of the syringe pump described above is given, as preparation, first, the tools are checked, the syringe pump 1, the attached pole clamp, the AC power cable, the infusion stand P, the syringe containing the drug solution, the indwelling needle, Make sure you have all of the above. Thereafter, the pole clamp is fixed to the infusion stand P, and the pole clamp is firmly fixed to the infusion stand. For this purpose, the fixing screw of the pole clamp is inserted into the screw hole at the bottom of the syringe pump and fixed. Next, an AC power cable is connected to the AC inlet 8 on the right side of the main body, and the plug is connected to an AC 100 V outlet with a ground terminal.
[0094]
When the AC power supply is connected, the battery lamp 17 lights up, indicating that the internal battery is being charged.
[0095]
Then, when the power switch 15 is turned on by pressing the power switch 15 for about one second in order to turn on the power, all the lamps flash three times and the buzzer sounds again, and a self-check is automatically performed. At this time, while the AC / DC lamp 16 is turned on, the display lamps 23, 24, and 25 for the flow rate, the planned amount, and the integrated amount are turned on. In addition, a preset syringe maker is displayed on the display unit 11 of the flow rate / planned quantity / integrated quantity by a numeral for about 3 seconds. Since the syringe maker setting label is affixed to the syringe pump to be used, make sure that the syringe maker setting label matches the syringe maker set on the main unit.
[0096]
After a lapse of a predetermined time, the number of the syringe maker on the display unit 11 for the flow rate, the planned amount, and the integrated amount disappears, and “0.0” is displayed on the display unit 11. At this time, the operation indicator 7 is turned off.
[0097]
On the other hand, the display lamp 18 of the type of syringe prompts the user to set the syringe by displaying that no syringe is mounted in a state where all four built-in display lamps are blinking.
[0098]
The setting of the syringe S is performed when all the above displays can be confirmed. When the syringe is connected to the injection line (tube) and the syringe filled with the drug solution in an aseptic environment, the syringe body S is set on the stage 2a, the clamp 5 is pulled up to the top, and then the arrow D1 direction Turn to. That is, as shown in the perspective view of the main part of FIG. 5, the clamp 5 is pulled up to set the main body S of the syringe and then rotated about 90 degrees so that it can remain at the upper position. Pull the clamp 5 upward and turn it in the direction of arrow D1.
[0099]
Subsequently, the flange SF of the syringe is inserted into the slit 2c to set the flange SF of the syringe in the slit 2c. Then, after the main body S of the syringe is set on the syringe stage 2a, when the clamp 5 is rotated in the direction of the arrow D1, the locked state is released and the syringe is moved in the direction of the arrow D2 to perform the syringe clamp.
[0100]
Subsequently, the clutch lever 52 of the slider assembly 50 is pushed to release the clutch and move the slider. At this time, when the clutch lever 52 of the slider is pushed, the slider can be moved by hand.
[0101]
When the clutch lever 52 is released after the presser SP of the syringe comes into contact with the slider assembly 50, the left and right hooks 53 and 54 automatically hold the presser SP. That is, when the clutch lever 52 is released, the hook of the slider is in a state of pinching the pusher of the syringe.
[0102]
Thereafter, the clamp 5 is turned in the direction of the arrow D1 and lowered in the direction of the arrow D2 to fix the syringe S as described above. After setting the syringe as described above, priming is performed.
[0103]
This priming must be performed before puncturing the patient. When the fast-forward switch 30 is pressed, the operation indicator 7 is rotationally displayed, the pump operation is disclosed, and the drug solution comes out from the tip of the indwelling needle. When the fast-forward switch 30 is kept pressed to send the chemical solution to the tip of the indwelling needle, the integrated amount lamp 25 blinks. During fast-forwarding of the display unit 11 of the flow rate / planned amount / integrated amount, the integrated amount lamp 25 blinks, and the priming amount is displayed in the display unit 11 of flow amount / planned amount / integrated amount. This priming amount is added to the integrated amount in 0.1 ml steps. Here, by pressing the integration clear switch 27, the integration amount can be cleared to “0”.
[0104]
This priming is always performed because it is important to eliminate the gap between the syringe and the main body so that the working surface of the slider assembly 50 of the main body comes into contact with the presser SP of the syringe without any gap.
[0105]
When the above priming is completed, the flow rate is set. At this time, it is first confirmed that the flow rate lamp 23 is lit. When the flow lamp 23 is not turned on, the display changeover switch 26 is pressed to bring the flow lamp 23 into a state of being turned on.
[0106]
After that, the setting dial 6 is turned to set the flow rate per hour. At this time, in order to prevent malfunction of the setting dial operation and to ensure safety, the numerical value is not changed during a half-turn after the turning operation is started. Has become. In addition, a buzzer sounds and the numerical value changes when it exceeds half a lap.
[0107]
Turning the setting dial 6 forward decreases the numerical value, and turning the setting dial 6 backward increases the numerical value. When the setting dial 6 is turned while the stop / mute switch 28 is pressed, the numerical value changes rapidly in the upper digit.
[0108]
Regarding the syringe type and the maximum flow rate, the maximum flow rate that can be set is set according to the type of the syringe. For example, the maximum flow rate is 1500 ml for a 30 ml syringe. Therefore, when a numerical value larger than the maximum flow rate is set and the start switch 29 is pressed, the flow rate set value flashes and the injection is not started.
[0109]
After setting the flow rate as described above, confirm that the main body 1 is in the stopped state, puncture the indwelling needle into the patient's arm or the like, and inject the drug solution when all preparations are completed. . For this, injection is started when the start switch 29 is pressed. Since the operation indicator 7 is turned on and turned on, the injection of the chemical solution can be confirmed from a distance by turning on and off.
[0110]
If the injection is not started even after about 2 minutes have passed since the setting of the flow rate after the syringe was set in the main body 1, a buzzer sounds to notify the user of forgetting to start. Therefore, when the stop / mute switch 28 is pressed, the buzzer sounds and stops.
[0111]
When changing the flow rate during the injection, the injection is temporarily stopped to stop the injection. Therefore, when the stop / mute switch 28 is pressed, the operation indicator 7 is turned off.
[0112]
After the injection is started, in order to confirm the integrated amount, when the display changeover switch 26 is pressed, the integrated amount lamp 25 is turned on. Then, the integrated amount from the start of injection is displayed for about 15 seconds in 0.1 ml steps on the flow rate / planned amount / integrated amount display section 11.
[0113]
When the user wants to clear the integrated amount, the user presses the stop / mute switch 28 to stop the main body 1 and then presses the display changeover switch 26 to display the integrated amount. When the button is pressed, a buzzer sounds and the integrated amount of the flow rate / planned amount / integrated amount display section 11 is cleared to "0.0 ml".
[0114]
When the predetermined amount of the drug solution is injected, the stop state is confirmed, and the syringe is removed. To this end, the clamp 5 is pulled up and held by being turned about 90 degrees. Then, the syringe is removed by pushing the clutch lever 52 of the slider 50 to open the left and right hook members 53 and 54. Thereafter, when the power switch 15 is not used again, the power switch 15 is kept pressed for about 2 seconds or more to turn it off.
[0115]
Although the desired function can be sufficiently achieved by the syringe pump having the above function, a more effective chemical liquid injection can be performed by the gamma injection setting function.
[0116]
For this reason, when the display ON / OFF switch 10a is first pressed for about 2 seconds or more, the gamma injection setting screen 10 is turned on, and the gamma injection can be performed. Subsequently, when the item changeover switch 10b is pressed, the gamma setting screen changes, and each time the item changeover switch 10b is pressed, the gamma amount, body weight, medicine amount, and solution amount are blinkingly displayed. The portion where the display is blinking is an item whose setting can be changed. By turning the setting dial 6 with the desired item displayed, the numerical value on the gamma setting setting screen 10 is changed to set the numerical value. . By turning the setting dial 6 while pressing the stop / mute switch 28, each step value can be changed rapidly. The gamma injection setting screen 10 automatically displays and displays the flow rate based on the set gamma amount, body weight, medicine amount, and solvent amount.
[0117]
The external communication connector 12 shown in FIG. 3 is provided for monitoring the state of the syringe pump with an external medical monitor. The nurse call connector 13 can be connected to a nurse call using an optional nurse call cable.
[0118]
As the setting of the special function, it is possible to change the setting of each mode as needed by operating a changeover switch inside the main body. As these special functions, the planned amount of the display unit 11 for the flow rate / planned amount / integrated amount can be changed between the standard mode and the planned amount mode. In the standard mode, each time the display changeover switch 26 is pressed, the flow rate and the integrated amount are displayed in this order, and the set amount cannot be set. Further, when the mode is switched to the scheduled amount mode by operating the changeover switch inside the main body, the display on the display unit 11 is arranged in the order of the flow rate, the scheduled amount, and the integrated amount, and the scheduled amount can be set. To set the scheduled amount, the display changeover switch 26 is pressed to turn on the scheduled amount lamp 24, and then the setting dial 6 is turned to set the scheduled amount. This setting can be changed in 0.1 ml steps. When the scheduled amount is set and the injection is started, when the integrated amount reaches the scheduled amount, the scheduled amount lamp 24 flashes and a buzzer sounds.
[0119]
When the predetermined amount is set as described above, the KVO (keep vein open) function is continued at a flow rate of 0.1 ml for the injection of the chemical solution. If the user wants to check on the way, pressing the stop / mute switch 28 turns on the operation indicator 7 and stops the buzzer. At this time, the keep-vein open function is continued, and when the stop / mute switch 28 is pressed again, the operation indicator 7 is turned off, the keep-vein open function is released, and the pump is stopped, and the injection in the scheduled amount mode is started. end.
[0120]
The re-alarm can be switched between the standard mode and the mute mode, the operation indicator 7 flashes red, and the buzzer sounds. In the standard mode and the mute mode, even if the alarm state continues for two minutes or more, the state can be set such that the re-alarm function does not operate.
[0121]
The forgotten start warning can be changed between the standard mode and the mute mode, the operation indicator 7 flashes red, and the buzzer sounds. It is possible to set a mode for notifying that the user has forgotten to start and a mute mode, in which the alarm function for forgetting to start does not operate even if the stopped state continues for two minutes or more.
[0122]
The syringe maker can be changed by an internal changeover switch, but this special function cannot be set normally because careless care may cause an accident.
[0123]
The setting of the blockage detection pressure level and the setting of the buzzer volume are performed by pressing the stop / mute switch 28 and the display changeover switch 26. First, when changing the setting of the blockage detection pressure level, simultaneously pressing the stop / mute switch 28 and pressing the display changeover switch 26, "PrES" is displayed on the display section 11 for the flow rate / planned quantity / integrated quantity. become. When the display changeover switch 26 is released and pressed while the stop / mute switch 28 is pressed as it is, the printing characters "L", "M", and "H" in the vicinity of the closing pressure set value lamps 19a, 19b, and 19c are sequentially changed. When the desired setting is obtained because the light is turned on, release the finger from all the switches, press the stop / mute switch 28, and press the integration clear switch 27 to set the occlusion detection pressure level.
[0124]
To change the setting of the buzzer volume, press the stop / mute switch 28 and simultaneously press the integration clear switch 27, and “bEL * 2” is displayed on the display section 11 of the flow rate / planned quantity / integrated quantity. Mode. While the stop / mute switch 28 is pressed as it is, the totalization clear switch 27 is released and pressed to display “bEL: 1”, “bEL: 2”, “bEL: 3”, and the buzzer sound volume is large, medium, and small. When the desired volume is reached, release the finger from all the switches to set the buzzer volume.
[0125]
A power supply box allows use with DC power. In this case, confirm that the AC power cable is disconnected from the main body 1, and connect the DC cable to the DC connector 9 on the right side of the main body. Subsequently, when the power switch 15 is turned on, the AC / DC lamp 16 is turned on to supply DC power.
[0126]
When neither the AC power nor the DC power is supplied, the power is automatically switched to the built-in battery, the AC / DC lamp 16 is turned off, and the built-in battery can be used continuously for about two hours. The built-in battery is charged when the AC power or the DC power is connected, regardless of whether the power is on or off. During this charging, the battery lamp 17 is turned on to display the remaining amount of the battery at three levels. As a guideline for the remaining battery power, when all three lamps are on, it can be used for about 80 minutes or more, and when two lamps are on, there is about 30 minutes or more of operating time. When only one is lit, it can be used for about 15 minutes or more. If all three are blinking, only two or one is lit, indicating that the battery has deteriorated.
[0127]
Further, when the remaining amount of the built-in battery is further reduced, the battery alarm lamp 22 flashes and a buzzer sounds, so that an AC power supply is connected and the power supply is immediately connected to an AC or DC power supply for use.
[0128]
Summarizing the above specifications, the operating sound of the syringe pump of this embodiment is quiet and is 55 dB or less even under the worst conditions, and under normal conditions (0.1 to 150 ml / h), 47 dB or less can be achieved at a position 10 mm from the main body. . In addition, the cleaning properties are good, the outer layer can be easily cleaned, the gauze and the cotton swab can be used for cleaning, and the user can perform disassembly cleaning to some extent without using a tool. In addition, maintenance is easy, no special tools are required, and since each component is unitized, supply is easy, adjustment is simple, and A / D values are displayed by internal switches. It is configured so that adjustment can be confirmed.
[0129]
The noise margin is set to satisfy, for example, a power supply impulse; 2 KV, 500 nSec, and a radiation; 1 KV, three directions, assuming that an electric knife is used nearby. Furthermore, the portable telephone (5 W) is designed to withstand use even in the vicinity. In addition, the electrostatic noise margin does not malfunction at 10 KV and does not break at 15 KV, so that the noise standards are domestic; VCIM Group 1 Class A, and overseas; FCC Prat. 18, CISPR 11 (IEC601-1-2) and VDEDIN58771.
[0130]
The type of lightning protection is CLASS * I (3 KV or more) and TYPE CF (ground leakage; 0.5 mA or less), satisfying JIS T1001, T1002 and overseas; IEC 601-1.
[0131]
The chemical resistance was not wiped with alcohol, but the outer layer was made to ABS grade V0 so as to have the chemical resistance of alcohol level, and the back side was printed so that the nameplate, printed characters, indications, etc. did not disappear. Dealt with.
[0132]
The driving thrust (the force to press the pusher) can withstand about 20 kgf at a maximum of about 15 kgf, and the machine (feed) accuracy can be made high accuracy within ± 1% by actual measurement, and the syringe Guarantees can be made for each type of manufacturer.
[0133]
Specifically, by actually measuring the amount of movement of the slider,
(1) Flow rate <1.0 ml / h
60 minutes (long-term); ± 5% or less
(2) 1.0 ml / h ≦ flow rate <5.0 ml / h
2 minute observation window; ± 2% or less
And,
60 minutes (long-term); ± 1% or less
(3) 5.0 ml / h ≤ flow rate
2 minute observation window; ± 1% or less
I made it.
[0134]
In addition, in order to make the flow rate accuracy high within ± 3%, the discharge amount was actually measured so that each kind of each manufacturer could be guaranteed.
{Circle around (1)} 1.0 ml / h ≦ flow rate <5.0 ml / h
2 minute observation window; ± 5% or less
(2) 1.0 ml / h ≤ flow rate
60 minutes (long-term); ± 3% or less
{Circle around (3)} It was confirmed that 95% or more was obtained 10 minutes after the start.
[0135]
Also, the standard of occurrence of the remaining amount alarm is 10 cc: 0.5 ml, 20 cc: 1.0 ml, 30 cc: 1.0 ml, and 50 cc: 1.0 ml.
[0136]
The γ amount display section 10 is a liquid crystal with a backlight (yellow or green). This is a numeric display with seven segments. Body weight / Kg / drug amount / mg / solution amount ml / γ amount / μg / Kg / min can be displayed. 1 SEG, γ amount; 7 SEG 4 digits + decimal point 1 SEG. When the normal injection mode is selected, the entire screen is turned off.
[0137]
The flow rate / integrated amount / scheduled amount display section 11 is an easy-to-read LED display, and is automatically switched to the flow rate display when the γ mode is set with 7 digits of SEG and 1 decimal point of 1 SEG. In addition, the flow rate display is sequentially switched in accordance with the set value during the setting of the γ mode. In the case of the display of the integrated amount or the scheduled amount, the display is automatically switched to the flow rate display when left for about 15 seconds.
[0138]
The alarm is generated at the time of Er *, CPU runaway, switch operation, and self-check, but the sound is easy to understand and there is no discomfort. Furthermore, it is compatible with overseas standards and the volume can be switched in three steps (panel operation). The setting volume can be stored and the volume level can be displayed at the time of setting. The maximum volume is 65 dB or more at a distance of 1 m, and it is of a self-excited type (so that a warning is issued when the CPU goes out of control).
[0139]
The tone has three frequencies (approximately 2 to 4 KHz), and the CPU can output a PWM signal, so that an alarm is output from a PWM signal, and a watchdog signal is output from a hard disk. The volume switching procedure is as follows: (1) In the alarm state (except for the voltage drop and the remaining amount), switching cannot be performed and the integration clear is pressed. → Small → Medium → ・ ・ ・ Changes (buzzer emits 1.5 seconds) (3) Synchronize with the buzzer, the flow rate is displayed on the flow rate display section at 7 Seg, middle = “b−2”, large = “b−” 3 ", small =" b-1 ". (4) The result is written in the EEPROM.
[0140]
【The invention's effect】
As described above, according to the present invention, it is possible to provide a syringe pump that can recognize at least an operation state for sending out even from a separated position.
[Brief description of the drawings]
FIG. 1 is an external perspective view of a syringe pump main body 1. FIG.
FIG. 2 is a right side view of the main body 1 of FIG.
FIG. 3 is a left side view of the main body 1 of FIG.
FIG. 4 is a plan view of an operation panel unit 2f.
5A is an external perspective view of a main part of an upper cover 2 of a main body 1. FIG. (B) It is principal part sectional drawing of the clamp 5. FIG.
FIG. 6A is an operation explanatory view of a clamp 5 for preparing a syringe set. (B) It is operation | movement explanatory drawing of the clamp 5 of a syringe set.
FIG. 7 is an external perspective view of a slider feed mechanism.
FIG. 8 is an external perspective view for explaining the operation of the slider feed mechanism.
9A is an external perspective view of the slider assembly 50. FIG. (B) It is the external appearance perspective view which showed and removed the cover 55.
FIG. 10 is a front view of FIG. 9 (b).
11 is an external perspective view of the slider assembly 50. FIG.
FIG. 12 is a front view of the slider assembly 50.
13 is a rear view of the slider assembly 50. FIG.
FIG. 14 is a cross-sectional view of a main part for explaining an operation in which only a slider part 65 is omitted.
FIG. 15 is a cross-sectional view of a main part for explaining an operation in which only a slider part 65 is omitted.
FIG. 16 is an external perspective view showing a mutual relationship among a slider component 65, a plate cam component 64, and a stopper component 57.
FIG. 17 shows a communication code.
FIG. 18 is a block diagram of a connection state.
FIG. 19 is a center sectional view of a setting dial.
FIG. 20 is an exploded perspective view of a setting dial.
FIG. 21 is a diagram illustrating the operation of a setting dial.
FIG. 22 is a sectional view taken along the line XX of FIG. 19;
FIG. 23 is a block diagram to which a Hall IC 71 is connected.
FIG. 24 is an operation correspondence chart of a built-in buzzer.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Syringe pump main body, 2 ... Top cover, 3 ... Bottom cover, 4 ... Rubber seal, 5 ... Clamp, 6 ... Setting dial, 7 ... Operation indicator, 7a-7d ... Light emitting diode, 8 ... AC inlet, 9 ... DC Power connector, 10: gamma setting display section, 11: display section of flow rate / planned amount / integrated amount, 12: external communication connector, 13: nurse call connector, 15: power switch, 16: AC / DC lamp, 17: battery Lamps, 18: Syringe display lamps, 19a to 19c: Closed lamp, 21: Remaining alarm lamp, 22: Battery alarm lamp, 23: Flow rate lamp, 24: Scheduled amount lamp, 25: Integrated amount lamp, 26: Switch, 27: integration clear switch, 28: stop / mute switch, 29: start switch, 30: fast forward switch, 33 Slider feed mechanism, 34: Base, 35: Motor (with encoder), 36: Gear train, 37: Lead screw, 38: Guide shaft, 39: Clutch sensor plate, 40: Pipe shaft, 41: Block, 42: Bush, 43 ... Inner clutch shaft, 44 ... Nut holder, 45 ... Half nut, 46 ... Sensor, 48 ... Guide bush, 50 ... Slider assembly, 51 ... Boots, 52 ... Clutch lever, 53 ... Right hook, 54 ... Left hook, 55 ... Cover, 57 ... Stopper part, 60 ... Slider base, 61 ... Pin, 62 ... Torsion spring, 63 ... Tension spring, 64 ... Plate cam part, 65 ... Slider part, 67 ... Plate, 70 ... Permanent magnet, 71 ... Hole IC, 72: embedded shaft, 73: metal bush, 74: magnetic material Grayed

Claims (2)

A syringe pump having an operation indicator for sending out a chemical solution and recognizing an operation state for sending out even from a separated position,
The operation indicator is provided so as to protrude upward at a position that is easy to see from the outside of the syringe pump, and blinks and displays a different display color according to the operation state, executes injection pause, and stops injection. A syringe pump characterized by turning off the light when turned off. A syringe pump that includes a recognition unit that sends out the chemical solution and recognizes an operation state for sending out even from a separated position,
The recognizing means is provided so as to protrude upward at a position that is easy to see from the outside of the syringe pump, flashes and displays different display colors according to the operation state, temporarily stops injection, and stops injection. A syringe pump characterized by turning off the light when turned off.

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