JP3616877B2 - Powder inhaler - Google Patents

Powder inhaler Download PDF

Info

Publication number
JP3616877B2
JP3616877B2 JP2002298726A JP2002298726A JP3616877B2 JP 3616877 B2 JP3616877 B2 JP 3616877B2 JP 2002298726 A JP2002298726 A JP 2002298726A JP 2002298726 A JP2002298726 A JP 2002298726A JP 3616877 B2 JP3616877 B2 JP 3616877B2
Authority
JP
Japan
Prior art keywords
medicine
hole
carrier
drug
powder inhaler
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.)
Expired - Fee Related
Application number
JP2002298726A
Other languages
Japanese (ja)
Other versions
JP2004129915A (en
Inventor
徹 西林
慎太郎 安達
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Otsuka Pharmaceutical Co Ltd
Otsuka Techno Corp
Original Assignee
Otsuka Pharmaceutical Co Ltd
Otsuka Techno Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to JP2002298726A priority Critical patent/JP3616877B2/en
Application filed by Otsuka Pharmaceutical Co Ltd, Otsuka Techno Corp filed Critical Otsuka Pharmaceutical Co Ltd
Priority to CN2003801000920A priority patent/CN1684732B/en
Priority to KR1020047009651A priority patent/KR100581385B1/en
Priority to US10/500,141 priority patent/US7387122B2/en
Priority to BR0306930-3A priority patent/BR0306930A/en
Priority to SG200500595-4A priority patent/SG134169A1/en
Priority to MXPA04005500A priority patent/MXPA04005500A/en
Priority to EP03754018A priority patent/EP1452198A4/en
Priority to AU2003272935A priority patent/AU2003272935C1/en
Priority to CA2694183A priority patent/CA2694183C/en
Priority to CA2467975A priority patent/CA2467975C/en
Priority to EP09004039A priority patent/EP2065066A3/en
Priority to PCT/JP2003/012866 priority patent/WO2004033010A1/en
Priority to TW092128127A priority patent/TWI252763B/en
Priority to ARP030103699A priority patent/AR041582A1/en
Priority to MYPI20033884A priority patent/MY135607A/en
Publication of JP2004129915A publication Critical patent/JP2004129915A/en
Priority to EGNA2004000053 priority patent/EG25378A/en
Publication of JP3616877B2 publication Critical patent/JP3616877B2/en
Application granted granted Critical
Priority to HK06100356.2A priority patent/HK1080401A1/en
Priority to US11/401,938 priority patent/US8235039B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Medical Preparation Storing Or Oral Administration Devices (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、多回数用量の微粉末状薬剤を投与することができる粉末吸入器に関する。
【0002】
【従来の技術】
この種の粉末吸入器は、多回数用量の微粉末状薬剤を収容する供給体と、一回分の用量に対応する容積の計量孔を有する薬剤搬送体と、該薬剤搬送体を操作する操作体とを備えている。
【0003】
そして、微粉末状薬剤を吸入する場合には、前記供給体の薬剤排出孔から前記計量孔内に前記微粉末状薬剤を充填し、前記供給体に対して前記薬剤搬送体を摺動させて前記計量孔を直線的に移動させる。
【0004】
このとき、前記計量孔内の前記微粉末状薬剤は前記薬剤搬送体の摺動により前記薬剤排出孔の孔縁部ですり切られて一定量の微粉末状薬剤が吸入流路の中に搬送される(例えば、特許文献1参照。)。
【0005】
しかし、かかる構成を採用した場合には、次のような2つの問題点があった。
【0006】
第1に、微粉末状薬剤をすり切るときに、図22に示すように計量孔100が矢印のように直線的に移動することにより、微粉末状薬剤が薬剤排出孔101の孔縁部近くの斜線部分に密集し、この結果、微粉末状薬剤の供給体と薬剤搬送体との間に微粉末状薬剤が挟まって微粉末状薬剤の計量性を低下させ、また、薬剤搬送体の操作性も悪くなるという問題があった。
【0007】
第2に、前記薬剤搬送体の摺動による摩擦帯電で静電気が発生し、前記微粉末状薬剤が粉末吸入器内に付着して微粉末状薬剤の定量性及び微粒子割合が低下するという問題があった。
【0008】
第2の問題点については、前記計量孔の移動距離を短くして帯電量を減少させることが考えられるが、従来の前記粉末吸入器は、保護キャップが操作体を兼ね、しかも、マウスピースを露出させるのに必要な保護キャップの移動距離に相当する距離だけ前記計量孔を移動させるように構成されていたので、少なくとも粉末吸入器の吸い口から前記保護キャップを取り外すのに必要な距離だけ前記計量孔を移動させなければならず、帯電量の減少は困難であった。
【0009】
また、専用の操作体を用いて薬剤搬送体を操作する場合であっても、使用者に操作体を操作したという実感を持たせるには、操作体をある程度の距離だけ移動させる必要がある。すなわち、粉末吸入器の場合は、前記計量孔が薬剤吸入流路の中まで移動して吸入が可能になったか否かを直接確認できないので、操作体の操作感覚によって吸入可能状態を実感させる必要がある。
【0010】
このように従来の粉末吸入器では、前記操作体を僅かに移動させて帯電量を減少させるのは構造上困難であった。
【0011】
【特許文献1】
特表2000―501013号公報(第2―3頁、図1E、図18B)
【0012】
【発明が解決しようとする課題】
本発明は、微粉末状薬剤が供給体と薬剤搬送体との間に挟まるのを防止でき、また、操作体の移動距離を短くすることなく帯電量の減少が可能となる粉末吸入器を提供する。
【0013】
【課題を解決するための手段】
本発明の粉末吸入器は、ハウジングと、多回数用量の微粉末状薬剤を収容し、下面に薬剤排出孔が開口した供給体と、前記供給体の薬剤排出孔から微粉末状薬剤が供給され、一回分の用量分の容積を有する計量孔を上面側に有する薬剤搬送体と、往復動自在に配設されて前記薬剤搬送体を操作する操作体とを備え、前記薬剤搬送体を前記供給体の下面に接触させた状態で動かすことにより、前記計量孔に充填された微粉末状薬剤を前記薬剤排出孔の位置から吸気流路の中へ移動させる粉末吸入器において、前記ハウジングの先端側に前記マウスピース、基端側に前記操作体をそれぞれ設け、前記ハウジング内に前記供給体と薬剤搬送体を収容し、前記薬剤搬送体を揺動自在に配設し、前記計量孔を、前記薬剤搬送体の揺動中心を中心として180°未満の円弧状の軌跡を描いて往復運動させるように構成したことを特徴とする粉末吸入器。
【0014】
また、前記計量孔を、前記薬剤搬送体の揺動中心と前記薬剤搬送体への前記操作体の作用点との間に位置させるのが望ましい。
【0015】
また、前記操作体は押し釦であって、前記操作体を押圧することにより前記計量孔を前記薬剤吸入流路の中へ移動させるのが望ましい。
【0016】
また、前記供給体、前記薬剤搬送体及び前記操作体に導電性を付与するのが望ましい。
【0017】
また、前記計量孔は球面凹状の有底孔であることが望ましい。また、前記薬剤搬送体を上方に弾性付勢することにより、前記薬剤搬送体に形成された肉厚で円弧状の摺動部を、前記供給体の薬剤排出孔の周囲に弾性的に接触させた状態で、前記薬剤搬送体を揺動させるように構成するのが望ましい。
【0018】
【発明の実施の形態】
以下、本発明の実施の形態について図面を参照して説明する。
【0019】
図1は粉末吸入器の斜視図、図2は粉末吸入器の縦断面図、図3は粉末吸入器の分解した側面図である。粉末吸入器は、図1乃至図3のようにハウジング1と、微粉末状薬剤を自力で吸入するためのマウスピース2と、多回数用量の微粉末状薬剤を収容する供給体3と、一回分の用量の微粉末状薬剤を搬送する薬剤搬送体4と、薬剤搬送体4を操作する操作体(押し釦)5と、操作体5をロックするロック体6と、ベース体7と、投薬回数を表示するカウンタ8とを備えている。
【0020】
次に、ハウジング1について説明する。ハウジング1は上側ハウジング1aと下側ハウジング1b、保護キャップ1cとを備えている。上側ハウジング1a及び下側ハウジング1bは、図3に示す係止爪1d及び係止溝1eによっていわゆるパッチン式で接合される。なお、後述のように薬剤搬送体4は揺動するので、薬剤搬送体4に揺動スペースを確保するためにハウジング1の横幅は広くなっている。
【0021】
図2及び図4のように上側ハウジング1a及び下側ハウジング1bの先端側にはマウスピース2の取付部1fが形成され、該取付部1fにはマウスピース2を挟持するための挟持用突起1gが設けられている。上側ハウジング1a及び下側ハウジング1bの基端側には操作体5の収納部1hが形成されている。上側ハウジング1aのマウスピース2の取付部1hの近傍には横長スリット状の空気取入口1iが設けられ、カウンタ8の取付け位置に対応する部位にはカウンタ8の状態を読み取るための窓1jが設けられている。
【0022】
図5のように下側ハウジング1bの内面側には、操作体5をガイドするための突条部1l及びガイド軸1mと、突脈部1nで囲繞されるロック体6を収容する収納部1oと、該収納部1o内に形成されるロック体6の枢支軸1pと、ばね係止突起1qと、ベース受け台1rと、嵌合突起1sとがそれぞれ形成されている。
【0023】
次にマウスピース2について説明する。マウスピース2は本体部2aとカバー部2bとで構成され、本体部2aには微粉末状薬剤を分散させる薬剤吸入流路2cが形成され、本体部2aの外周部には嵌合溝2eが形成され、カバー部2bには吸気孔2fが設けられている。
【0024】
次に供給体3について説明する。供給体3は、約200回分の服用量の微粉末状薬剤を収容するホッパー3aを備え、該ホッパー3aの下端には薬剤排出孔3bが設けられ、供給体3のホッパー3aの上端側の開口部3cは微粉末状薬剤を湿度から保護する蓋3dにて閉塞され、ホッパー3aの外壁面には空気吸引溝32が形成されている。また、供給体3には貫通孔3fが形成され、カウンタ8を位置決めするための位置決めピン3hを有するカバー3eが設けられている。更に、後述する薬剤搬送体4の計量孔4cの周囲部との接触面積を少なくするために、薬剤排出孔3bの周縁部及び薬剤搬送体4の摺動部4eに対応する部位には肉厚部3gが形成され、薬剤搬送体4は該肉厚部3gの下面にのみ接触するようになっている。
【0025】
次に操作体5について説明する。操作体5はハウジング1に平行往復動自在に配設され、操作ばね(コイルばね)51の弾撥力に抗して押し込まれるようになっている。操作体5はガイド板5aを備え、該ガイド板5aには薬剤搬送体4の係止用長孔5b、ガイド用長孔5c、及び下側ハウジング1bのばね係止突起1qを挿通するための挿通用長孔5dが設けられ、ガイド板5aの下面側には係合ピン5eが設けられている。また、操作体5からは操作ばね51を取り付けるためのばね取付軸5fが突設されている。
【0026】
次にロック体6について説明する。ロック体6にはガイド溝6a、第1切替部6b、第2切替部6c、上係合部6d、下係合部6e、枢支孔6f及び弾性杆6gがそれぞれ形成されている。ロック体6は、下側ハウジング1bの収容部1oに収容され、枢支孔6fは収容部1o内の枢支軸1pにはめ込まれるようになっている。また、ロック体6の上には操作体5が位置し、該操作体5の係合ピン5eはロック体6のガイド溝6a内に挿入されている。
【0027】
かかるロック体6は、以下のように動作する。すなわち、操作体5を指先で位置まで押し込むと、操作体5の係合ピン5eはロック体6の下係合部6eからガイド溝6aを通って第1切替部6bに至る(図20(a))。このとき、ロック体6は弾性杆6gの弾撥力に抗して揺動する。その後、操作体5を解除すると、操作ばね51の弾撥力により操作体5の係合ピン5eが上係合部6dに係合し、操作体5は押し込まれた状態でロックされる。次に、操作体5を再び押し込むと、ロック体6の弾性杆6gの弾性復元力により係合ピン5eは下係合部6eから解除されて第2切替部6cに至る(図20(b))。次に、操作体5に対する押し込み力を解除すると、操作ばね51の弾撥力により係合ピン5eはガイド溝6aを通って下係合部6eに移動して操作体5は元の位置に復帰する(図20(a))。なお、粉末吸入器全体の動作については後述する。
【0028】
次に薬剤搬送体4について説明する。図9のように薬剤搬送体4の一端部には軸孔4aが形成され、他端部には係止ピン4bが設けられ、軸孔4aと係止ピン4bとの中間部分には一回分の用量に対応する容積を有する球面凹状の有底の計量孔4cが形成されている。更に、薬剤搬送体4にはカウンタ8に係合した該カウンタ8を回転させるラチェット4dが形成されている。なお、計量孔4cは貫通孔であっても良い。
【0029】
薬剤搬送体4の上面の一部は盛り上げられて平面視が円弧状の摺動部4eが形成され、摺動部4eの一端部に計量孔4cが位置している。これにより、計量孔4cが円弧状に移動した場合でも薬剤搬送体4の摺動部4eのみが供給体3の薬剤排出孔3bの周囲の肉厚部3gの下面と接触するようになっている。
【0030】
薬剤搬送体4は、後述のようにベース体7の枢支ピン7iに揺動自在に枢支され、薬剤搬送体4の係止ピン4bは操作体5の係止用長孔5bに挿入されることにより薬剤搬送体4と操作体5とが係合する。
【0031】
また、薬剤搬送体4は後述する押し上げ体9によって上方に弾性付勢されることにより、薬剤搬送体4の摺動部4eは供給体3の薬剤排出孔3bの周囲の肉厚部3gの下面と弾性的に接触するようになっている。これにより、薬剤搬送体4の摺動部4eとホッパー3aの薬剤排出孔3bの周囲部との緊密度が増し、薬剤搬送体4の計量孔4cから微粉末状薬剤が漏れるのを防止している。
【0032】
次にベース体7について説明する。ベース体7には嵌合孔7a及びカウンタ支持軸7bが設けられ、このカウンタ支持軸7bの周囲にはカウンタ支持環7cが立設され、また、薬剤搬送体4が揺動して係止ピン4bが移動する範囲には切り欠き部7dが設けられている。
【0033】
また、ベース体7には押し上げ体9の取付部7eが形成され、該取付部7eには嵌合孔7fを有するばね支持軸7gと固定ピン7hとが設けられている。一方、押し上げ体9の下面側には嵌合突起9aと嵌合孔9bを有するボス部9cとが形成されている。そして、図10(b)のようにベース体7の嵌合孔7hに押し上げ体9の嵌合突起9bを嵌合し、押し上げばね(コイルばね)10が挿通されたベース体7のばね支持軸7gに押し上げ体9の嵌合突起9aを嵌合することにより、押し上げ体9を上方にばね付勢している。また、押し上げ体9の取付部7eの近傍には枢支ピン7iが形成されている。
【0034】
次にカウンタ8について説明する。カウンタ8は、公知の構造のものであって、1の位のカム付き円盤8aと10の位のカム付きホイール8bとを備えている。カム付き円盤8aはベース体7のカウンタ支持軸7bにより回転自在に支持され、カム付き円盤8aにはカム付きホイール8bがはめ込まれると共にベース体7のカウンタ支持環7cにて支持されている。
【0035】
そして、薬剤搬送体4の揺動によりラチェット4dによって1の位のカム付き円盤8aは1の計数位置だけ回転し、投薬回数が10回目でカム付きホイール8bが1の計数位置だけ回転し、カム付きホイール8bの最大目盛だけ投薬回数を表示する。
【0036】
供給体3、薬剤搬送体4及び操作体5の材料にカーボン等の導電性フィラーを加えている導電性を付与し、静電気を漏洩させるようにしても良い。
【0037】
なお、導電性を付与する部品は、供給体3、薬剤搬送体4及び操作体5には限定されない。
【0038】
次に粉末吸入器の組み立て手順について説明する。
【0039】
まず、上述のように下側ハウジング1bの収容部1oにロック体6を収容した後、操作体5を下側ハウジング1bに取り付けてロック体6の上に位置させる。このとき、操作体5のガイド用長孔5c内に下側ハウジング1bのガイド軸1mを挿通し、操作体5の挿通用長孔5dに下側ハウジング1bのばね係止突起1qを挿通する。また、操作体5のばね取付軸5fに操作ばね51をその一端側から挿通し、該操作ばね51の他端側を下側ハウジング1bのばね係止突起1qに係止する。
【0040】
次に、ベース体7を下側ハウジング1bのベース受け台1rに載置し、ベース体7の嵌合孔7aを下側ハウジング1bの嵌合突起1sに嵌合してベース体7を位置決めする(図16)。
【0041】
次に、上述のようにしてベース体7に押し上げ体9を装着した後、ベース体7及び押し上げ体9の上に薬剤搬送体4を重ねる。このとき、薬剤搬送体4の枢支孔4cとベース体7の枢支ピン7iと合致させ、薬剤搬送体4の係止ピン4bを操作体5の係止用長孔5bに挿入して薬剤搬送体4を操作体5に係合する(図17)。また、上述のようにしてカウンタ8をベース体7に装着する。更に、下側ハウジング1bの挟持用突起にマウスピース2の嵌合溝2eを嵌合する。
【0042】
次に、薬剤搬送体4の上に供給体3を位置させ、ベース体7の枢支ピン7iに供給体3の貫通孔3f及び薬剤搬送体4の枢支孔4aを挿通して薬剤搬送体4を揺動自在に枢支し、供給体3のカバー3eでカウンタ8を位置決めする(図18)。
【0043】
次に、下側ハウジング1bに上側ハウジング1aを接合することにより、上側ハウジング1aの内面側に形成された位置決め部によって供給体3を位置決めすると共に、上側ハウジング1aの挟持用突起1gをマウスピース2の嵌合溝2eに嵌合し、最後に、マウスピース2の本体部2aにカバー部2bを嵌合する。
【0044】
以上のように、粉末吸入器は部品を下から積み上げて組み立てられるので、組立手順が明確になって生産性が向上し、また、ねじが不要となる分だけ生産性が更に向上する。
【0045】
このように構成される粉末吸入器は、以下の動作をすることにより計量孔4cによる微粉末状薬剤の計量性を向上させることができる。
【0046】
操作体5を押し込む前の状態は、図2のように薬剤搬送体4は該薬剤搬送体4の計量孔4cが供給体3の薬剤排出孔3bと合致する薬剤充填位置に位置する。
【0047】
そして、操作体5を押し込んでロックすると、薬剤搬送体4が揺動し、図2の二点鎖線のように計量孔4cは薬剤充填位置からホッパー3aの空気吸引溝32の近傍の空間内へ移動する。このとき、計量孔4c内に充填された微粉末状薬剤は薬剤排出孔3bの周囲の肉厚部3gによってすり切られ、一回分の用量の微粉末状薬剤が空気吸引溝32の近傍の空間まで搬送される。
【0048】
次に、患者の吸気圧でマウスピース2の吸気孔2fからハウジング1内の空気を吸引すると、ハウジング1内は負圧になり、図2の矢印のように外部の空気がハウジング1の空気取入口1iからハウジング1内に吸引され、マウスピース2の空気吸引溝32を通ってマウスピース2の薬剤吸入流路2cに至る。これにより、薬剤搬送体4の計量孔4c内に充填された微粉末状薬剤に空気衝撃が加わって該微粉末状薬剤がマウスピース2の薬剤吸入流路2c内に飛散し、吸引された空気と共に吸気孔2fを通って患者の肺器官内に至る。
【0049】
次に、操作体5を元の位置に復帰させることにより、薬剤搬送体4がスイングバックして計量孔4cは供給体3の薬剤排出孔3bの下方の薬剤充填位置まで戻る。
【0050】
このように、操作体5の押し込み動作及び操作体5の復帰動作により、薬剤搬送体4の摺動部4eは、供給体3の薬剤排出孔3bの周囲部に対して摺動し、薬剤搬送体4の計量孔4cは、薬剤排出孔3bと合致する位置と空気吸引溝32の近傍の空間との間を円弧往復運動をする。
【0051】
また、薬剤搬送体4の計量孔4cは、薬剤搬送体4の軸孔4a(薬剤搬送体4の揺動中心)と薬剤搬送体4の係止ピン4b(操作体5の作用点)との中間に位置するので、計量孔4cの移動距離は操作体5の移動距離よりも短くなり、操作体5の移動距離と同じ距離だけ移動する従来のものに較べて、計量孔4cの周囲の摺動距離が短くなって静電気発生量を低減でき、計量孔4cによる微粉末状薬剤の計量性能を向上させることができる。
【0052】
また、図21のように計量孔4cは円弧運動するので、微粉末状薬剤をすり切る際に、同図の矢印のように微粉末状薬剤はホッパー3aの薬剤排出孔3bの孔壁31cに沿って流れる。この結果、微粉末状薬剤が薬剤排出孔3bの孔壁31c付近で滞留することによって供給体3と薬剤搬送体4との間に入り込むのを防止できる。
【0053】
なお、ホッパー3a内の微粉末状薬剤を使い切れば、粉末吸入器は廃棄される。
【0054】
【発明の効果】
本発明の粉末吸入器によれば、前記薬剤搬送体を揺動自在に配設し、該薬剤搬送体の揺動によって前記計量孔を円弧運動させるように構成したので、計量孔が薬剤吸入流路に向けて移動するときには、微粉末状薬剤は薬剤排出孔の孔壁に沿って流れて微粉末状薬剤のすり切りをスムーズに行うことができ、その結果、供給体と薬剤搬送体との間に微粉末状薬剤が挟まることによる粉末状薬剤の計量性の低下や薬剤搬送体の操作性の悪化を防止することができる。しかも、供給体の薬剤排出孔と吸気流路との間を計量孔が往復する単純な機構で済ませることができ、製造コストの低減を図ることができる。
【0055】
また、前記計量孔を、前記薬剤搬送体の揺動中心と前記薬剤搬送体への前記操作体の作用点との間に位置させれば、操作体の移動距離よりも薬剤搬送体の計量孔の移動距離を短くでき、蓄積される静電気量を軽減できて微粉末状薬剤の定量性及び微粒子割合の低下を防止できる。
【0056】
また、前記操作体を押し釦により構成し、前記操作体を押圧して前記計量孔を前記充填位置から前記飛散位置まで移動するように構成すれば、操作体が保護キャップ兼ねる従来の粉末吸入器に較べて、保護キャップを吸引口から取り外すのに必要な距離だけ操作体を移動させる必要がなくなり、その結果、操作体の操作距離を必要以上に大きくする必要がなくなって静電気量を軽減できる。
【0057】
また、前記供給体、前記薬剤搬送体及び前記操作体に導電性を付与すれば、摩擦で発生する静電気を漏洩させることができ、極めて微量の微粉末薬剤の定量性を確保するとともに、より高い微粒子割合を得ることができる。
【0058】
また、上述のように前記供給体の薬剤排出孔と前記吸気流路との間を前記計量孔が往復する機構において、該計量孔を球面凹状の有底孔にすれば、患者が吸気せずに誤って操作体を複数回操作することがあっても、計量孔内に微粉末状薬剤が新たに充填されるのを防止でき、一回分以上の薬剤が患者の肺内に吸入されることがなくなり、しかも、一回分の薬剤を残らず患者の肺内に吸入できる。
【図面の簡単な説明】
【図1】本発明の実施形態の粉末吸入器を示す斜視図である。
【図2】同粉末吸入器の縦断面図である。
【図3】同粉末吸入器の分解状態を示す側面図である。
【図4】同粉末吸入器の上側ハウジングの平面図である。
【図5】同粉末吸入器の下側ハウジングの平面図である。
【図6】同粉末吸入器のロック体の平面図である。
【図7】同粉末吸入器の操作体の平面図である。
【図8】同粉末吸入器のベース体の平面図である。
【図9】(a)は同粉末吸入器の薬剤搬送体の平面図、(b)は同薬剤搬送体の側面図である。
【図10】(a)は同粉末吸入器の押し上げ体の平面図、(b)はベース体への押し上げ体の取付状態を示す断面図である。
【図11】同粉末吸入器のカウンタを示す平面図である。
【図12】(a)は同粉末吸入器の供給体の平面図、(b)は同供給体の底面図である。
【図13】(a)は同粉末吸入器のマウスピースの平面図、(b)は同マウスピースの側面図である。
【図14】同粉末吸入器の組立順序を示す平面図である。
【図15】同粉末吸入器の組立順序を示す平面図である。
【図16】同粉末吸入器の組立順序を示す平面図である。
【図17】同粉末吸入器の組立順序を示す平面図である。
【図18】同粉末吸入器の組立順序を示す平面図である。
【図19】同粉末吸入器の薬剤搬送体の動作を示す平面図である。
【図20】同粉末吸入器の操作体のロック動作を示す平面図である。
【図21】同粉末吸入器のよる微粉末状薬剤のすり切り動作を示す概略図である。
【図22】従来の粉末吸入器のよる微粉末状薬剤のすり切り動作を示す概略図である。
【符号の説明】
1 ハウジング
3 供給体
3 供給体
3b 薬剤供給孔
4 薬剤搬送体
4c 薬剤搬送体の計量孔
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a powder inhaler capable of administering multiple doses of a finely powdered medicament.
[0002]
[Prior art]
This type of powder inhaler includes a supply body for storing a multi-dose fine powdery drug, a drug transport body having a measuring hole having a volume corresponding to a single dose, and an operating body for operating the drug transport body. And.
[0003]
When inhaling the fine powder medicine, the fine powder medicine is filled into the measurement hole from the medicine discharge hole of the supply body, and the medicine carrier is slid with respect to the supply body. The measuring hole is moved linearly.
[0004]
At this time, the fine powder medicine in the measurement hole is cut by the edge of the medicine discharge hole by sliding of the medicine carrier, and a certain amount of fine powder medicine is conveyed into the suction channel. (For example, refer to Patent Document 1).
[0005]
However, when such a configuration is adopted, there are the following two problems.
[0006]
First, when the fine powder medicine is worn, the measurement hole 100 moves linearly as shown by an arrow as shown in FIG. 22 so that the fine powder medicine is close to the edge of the medicine discharge hole 101. As a result, the pulverized drug is sandwiched between the pulverized drug supply body and the drug carrier to reduce the measurement of the pulverized drug, and the drug carrier is operated. There was a problem of worsening the nature.
[0007]
Second, there is a problem that static electricity is generated due to frictional charging caused by sliding of the medicine carrier, and the fine powder medicine adheres to the inside of the powder inhaler, thereby reducing the quantitative property and the fine particle ratio of the fine powder medicine. there were.
[0008]
Regarding the second problem, it is conceivable to reduce the charge amount by shortening the moving distance of the measuring hole. However, in the conventional powder inhaler, the protective cap also serves as the operating body, and the mouthpiece is Since the metering hole is configured to move by a distance corresponding to the moving distance of the protective cap necessary for exposure, the distance required to remove at least the protective cap from the mouthpiece of the powder inhaler is set. The measurement hole had to be moved, and it was difficult to reduce the charge amount.
[0009]
Even when the medicine carrier is operated using a dedicated operating body, it is necessary to move the operating body by a certain distance in order to give the user a sense that the operating body has been operated. That is, in the case of a powder inhaler, it is not possible to directly check whether or not the measuring hole has moved into the medicine inhalation flow path so that inhalation is possible. There is.
[0010]
As described above, in the conventional powder inhaler, it is structurally difficult to slightly move the operation body to reduce the charge amount.
[0011]
[Patent Document 1]
JP 2000-501013 (page 2-3, FIG. 1E, FIG. 18B)
[0012]
[Problems to be solved by the invention]
The present invention provides a powder inhaler that can prevent a fine powder medicine from being caught between a supply body and a medicine carrier, and can reduce the charge amount without shortening the moving distance of the operating body. To do.
[0013]
[Means for Solving the Problems]
The powder inhaler of the present invention contains a housing, a multi-dose fine powder medicine, a supply body having a medicine discharge hole opened on the lower surface, and the fine powder medicine is supplied from the medicine discharge hole of the supply body. A medicine transport body having a measuring hole having a volume corresponding to a single dose on the upper surface side, and an operating body that is reciprocally disposed to operate the medicine transport body, and supplies the medicine transport body In the powder inhaler for moving the fine powder medicine filled in the measuring hole from the position of the medicine discharge hole into the inhalation flow path by moving it in contact with the lower surface of the body, the front end side of the housing The mouthpiece is provided with the operating body on the base end side, the supply body and the medicine transport body are accommodated in the housing, the medicine transport body is swingably disposed, and the measuring hole is provided with the measuring hole, 1 centering on the rocking center of the drug carrier Powder inhalers which are characterized by being configured to reciprocate painted 0 arcuate path below °.
[0014]
Further, it is desirable that the measuring hole is positioned between the swing center of the medicine carrier and the operating point of the operating body on the medicine carrier.
[0015]
Further, it is preferable that the operation body is a push button, and the measurement hole is moved into the medicine suction channel by pressing the operation body.
[0016]
Moreover, it is desirable to provide conductivity to the supply body, the medicine carrier, and the operation body.
[0017]
The measuring hole is preferably a spherical concave bottomed hole. Further, by elastically urging the medicine carrier, the thick and arcuate sliding portion formed on the medicine carrier is brought into elastic contact with the periphery of the medicine discharge hole of the supply body. It is desirable that the medicine carrier is swung in a state where it is in a state of being in contact.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0019]
1 is a perspective view of the powder inhaler, FIG. 2 is a longitudinal sectional view of the powder inhaler, and FIG. 3 is an exploded side view of the powder inhaler. As shown in FIGS. 1 to 3, the powder inhaler includes a housing 1, a mouthpiece 2 for inhaling a fine powder medicine by itself, a supply body 3 for storing a multi-dose fine powder medicine, A medicine carrier 4 that carries a minute dose of fine powder medicine, an operating body (push button) 5 that operates the medicine carrier 4, a lock body 6 that locks the operating body 5, a base body 7, and a medication And a counter 8 for displaying the number of times.
[0020]
Next, the housing 1 will be described. The housing 1 includes an upper housing 1a, a lower housing 1b, and a protective cap 1c. The upper housing 1a and the lower housing 1b are joined in a so-called patching manner by the locking claws 1d and the locking grooves 1e shown in FIG. As will be described later, since the drug carrier 4 swings, the lateral width of the housing 1 is widened in order to secure a swing space in the drug carrier 4.
[0021]
As shown in FIGS. 2 and 4, an attachment portion 1 f of the mouthpiece 2 is formed on the distal end side of the upper housing 1 a and the lower housing 1 b, and a holding protrusion 1 g for holding the mouthpiece 2 is formed on the attachment portion 1 f. Is provided. A storage portion 1h for the operation body 5 is formed on the base end sides of the upper housing 1a and the lower housing 1b. A horizontally long slit-shaped air intake 1i is provided in the vicinity of the mounting portion 1h of the mouthpiece 2 of the upper housing 1a, and a window 1j for reading the state of the counter 8 is provided at a portion corresponding to the mounting position of the counter 8. It has been.
[0022]
As shown in FIG. 5, on the inner surface side of the lower housing 1b, a housing portion 1o for housing a protrusion 1l and a guide shaft 1m for guiding the operating body 5 and a lock body 6 surrounded by the projecting portion 1n. A pivot shaft 1p of the lock body 6 formed in the storage portion 1o, a spring locking projection 1q, a base cradle 1r, and a fitting projection 1s are formed.
[0023]
Next, the mouthpiece 2 will be described. The mouthpiece 2 is composed of a main body portion 2a and a cover portion 2b. The main body portion 2a is formed with a medicine suction channel 2c for dispersing a fine powdery medicine, and a fitting groove 2e is formed on the outer peripheral portion of the main body portion 2a. The cover portion 2b is formed with an intake hole 2f.
[0024]
Next, the supply body 3 will be described. The supply body 3 is provided with a hopper 3a that accommodates about 200 doses of finely powdered medicine, a medicine discharge hole 3b is provided at the lower end of the hopper 3a, and an opening on the upper end side of the hopper 3a of the supply body 3 is provided. The portion 3c is closed by a lid 3d that protects the fine powder medicine from humidity, and an air suction groove 32 is formed on the outer wall surface of the hopper 3a. Further, a through hole 3 f is formed in the supply body 3, and a cover 3 e having positioning pins 3 h for positioning the counter 8 is provided. Furthermore, in order to reduce the contact area with the peripheral part of the measurement hole 4c of the medicine delivery body 4 to be described later, the peripheral portion of the medicine discharge hole 3b and the portion corresponding to the sliding portion 4e of the medicine delivery body 4 are thick. A part 3g is formed, and the medicine carrier 4 comes into contact only with the lower surface of the thick part 3g.
[0025]
Next, the operating body 5 will be described. The operating body 5 is disposed in the housing 1 so as to be reciprocally movable in parallel, and is pushed against the elastic force of the operating spring (coil spring) 51. The operating body 5 includes a guide plate 5a, through which the locking long hole 5b, the guide long hole 5c, and the spring locking protrusion 1q of the lower housing 1b are inserted. A long hole 5d for insertion is provided, and an engagement pin 5e is provided on the lower surface side of the guide plate 5a. Further, a spring attachment shaft 5f for attaching the operation spring 51 is provided protruding from the operation body 5.
[0026]
Next, the lock body 6 will be described. The lock body 6 is formed with a guide groove 6a, a first switching portion 6b, a second switching portion 6c, an upper engaging portion 6d, a lower engaging portion 6e, a pivot hole 6f, and an elastic rod 6g. The lock body 6 is accommodated in the accommodating portion 1o of the lower housing 1b, and the pivotal support hole 6f is fitted into the pivotal shaft 1p in the accommodating portion 1o. The operating body 5 is positioned on the lock body 6, and the engaging pin 5 e of the operating body 5 is inserted into the guide groove 6 a of the lock body 6.
[0027]
The lock body 6 operates as follows. That is, when the operating body 5 is pushed to the position with the fingertip, the engaging pin 5e of the operating body 5 reaches the first switching portion 6b from the lower engaging portion 6e of the lock body 6 through the guide groove 6a (FIG. 20 (a )). At this time, the lock body 6 swings against the elastic force of the elastic rod 6g. Thereafter, when the operating body 5 is released, the engaging pin 5e of the operating body 5 is engaged with the upper engaging portion 6d by the elastic force of the operating spring 51, and the operating body 5 is locked in the pushed state. Next, when the operating body 5 is pushed in again, the engaging pin 5e is released from the lower engaging portion 6e by the elastic restoring force of the elastic rod 6g of the lock body 6 and reaches the second switching portion 6c (FIG. 20B). ). Next, when the pushing force on the operating body 5 is released, the engaging pin 5e moves to the lower engaging portion 6e through the guide groove 6a by the elastic force of the operating spring 51, and the operating body 5 returns to the original position. (FIG. 20A). The operation of the entire powder inhaler will be described later.
[0028]
Next, the medicine carrier 4 will be described. As shown in FIG. 9, a shaft hole 4a is formed at one end of the drug delivery body 4, a locking pin 4b is provided at the other end, and one portion is provided at an intermediate portion between the shaft hole 4a and the locking pin 4b. A spherical concave bottomed measuring hole 4c having a volume corresponding to the dose of 1 is formed. Furthermore, the drug delivery body 4 is formed with a ratchet 4d that rotates the counter 8 engaged with the counter 8. The measuring hole 4c may be a through hole.
[0029]
A part of the upper surface of the medicine carrier 4 is raised to form a sliding part 4e having an arc shape in plan view, and a measuring hole 4c is located at one end of the sliding part 4e. Thereby, even when the measurement hole 4c moves in an arc shape, only the sliding portion 4e of the medicine carrier 4 comes into contact with the lower surface of the thick portion 3g around the medicine discharge hole 3b of the supply body 3. .
[0030]
As will be described later, the medicine carrier 4 is pivotally supported by a pivot pin 7 i of the base body 7, and the locking pin 4 b of the medicine carrier 4 is inserted into the locking elongated hole 5 b of the operating body 5. As a result, the medicine carrier 4 and the operating body 5 are engaged.
[0031]
Further, the medicine carrier 4 is elastically biased upward by a push-up body 9 to be described later, so that the sliding portion 4e of the medicine carrier 4 is the lower surface of the thick portion 3g around the medicine discharge hole 3b of the supply body 3. It comes to be elastically in contact with. This increases the tightness between the sliding portion 4e of the medicine carrier 4 and the peripheral portion of the medicine discharge hole 3b of the hopper 3a, and prevents the fine powder medicine from leaking from the measuring hole 4c of the medicine carrier 4. Yes.
[0032]
Next, the base body 7 will be described. The base body 7 is provided with a fitting hole 7a and a counter support shaft 7b. A counter support ring 7c is erected around the counter support shaft 7b. A cutout portion 7d is provided in the range in which 4b moves.
[0033]
The base body 7 is formed with a mounting portion 7e for the push-up body 9, and the mounting portion 7e is provided with a spring support shaft 7g having a fitting hole 7f and a fixing pin 7h. On the other hand, a boss portion 9c having a fitting protrusion 9a and a fitting hole 9b is formed on the lower surface side of the push-up body 9. Then, as shown in FIG. 10B, the fitting projection 9b of the push-up body 9 is fitted into the fitting hole 7h of the base body 7, and the spring support shaft of the base body 7 through which the push-up spring (coil spring) 10 is inserted. The push-up body 9 is spring-biased upward by fitting the fitting protrusion 9a of the push-up body 9 to 7g. Further, a pivot pin 7 i is formed in the vicinity of the attachment portion 7 e of the push-up body 9.
[0034]
Next, the counter 8 will be described. The counter 8 has a known structure, and includes a disc 8a with a cam of the first place and a wheel 8b with a cam of a tenth place. The cam-equipped disc 8a is rotatably supported by the counter support shaft 7b of the base body 7, and the cam-equipped disc 8a is fitted with a cam-equipped wheel 8b and supported by the counter support ring 7c of the base body 7.
[0035]
Then, by the swinging of the medicine carrier 4, the disc 8a with the 1st place is rotated by the counting position 1 by the ratchet 4d, and the cam-equipped wheel 8b is rotated by the 1st counting position at the 10th dosing. The number of medications is displayed for the maximum scale of the attached wheel 8b.
[0036]
The material of the supply body 3, the drug delivery body 4, and the operation body 5 may be provided with conductivity by adding a conductive filler such as carbon to leak static electricity.
[0037]
In addition, the part which provides electroconductivity is not limited to the supply body 3, the chemical | medical agent conveyance body 4, and the operation body 5. FIG.
[0038]
Next, the assembly procedure of the powder inhaler will be described.
[0039]
First, after the lock body 6 is accommodated in the accommodating portion 1o of the lower housing 1b as described above, the operating body 5 is attached to the lower housing 1b and positioned on the lock body 6. At this time, the guide shaft 1 m of the lower housing 1 b is inserted into the guide long hole 5 c of the operating body 5, and the spring locking projection 1 q of the lower housing 1 b is inserted into the insertion long hole 5 d of the operating body 5. Further, the operating spring 51 is inserted into the spring mounting shaft 5f of the operating body 5 from one end side, and the other end side of the operating spring 51 is locked to the spring locking projection 1q of the lower housing 1b.
[0040]
Next, the base body 7 is placed on the base cradle 1r of the lower housing 1b, and the base body 7 is positioned by fitting the fitting hole 7a of the base body 7 into the fitting protrusion 1s of the lower housing 1b. (FIG. 16).
[0041]
Next, after the push-up body 9 is mounted on the base body 7 as described above, the medicine carrier 4 is overlaid on the base body 7 and the push-up body 9. At this time, the medicine support 4 is matched with the pivot hole 4c of the base body 7 and the pivot pin 7i of the base body 7, and the locking pin 4b of the medicine carrier 4 is inserted into the locking long hole 5b of the operating body 5 to thereby fill the medicine. The transport body 4 is engaged with the operation body 5 (FIG. 17). Further, the counter 8 is attached to the base body 7 as described above. Further, the fitting groove 2e of the mouthpiece 2 is fitted into the holding projection of the lower housing 1b.
[0042]
Next, the supply body 3 is positioned on the medicine carrier 4, and the through hole 3 f of the supply body 3 and the pivot hole 4 a of the medicine carrier 4 are inserted into the pivot pins 7 i of the base body 7, thereby the medicine carrier. 4 is pivotally supported, and the counter 8 is positioned by the cover 3e of the supply body 3 (FIG. 18).
[0043]
Next, by joining the upper housing 1a to the lower housing 1b, the supply body 3 is positioned by the positioning portion formed on the inner surface side of the upper housing 1a, and the clamping protrusion 1g of the upper housing 1a is moved to the mouthpiece 2 Is fitted into the fitting groove 2e, and finally, the cover portion 2b is fitted into the main body portion 2a of the mouthpiece 2.
[0044]
As described above, since the powder inhaler is assembled by stacking components from the bottom, the assembly procedure is clarified and the productivity is improved, and the productivity is further improved by the amount that screws are unnecessary.
[0045]
The powder inhaler configured as described above can improve the meterability of the fine powder medicine by the metering hole 4c by performing the following operation.
[0046]
In a state before the operating body 5 is pushed in, as shown in FIG. 2, the medicine carrier 4 is located at a medicine filling position where the measurement hole 4 c of the medicine carrier 4 matches the medicine discharge hole 3 b of the supply body 3.
[0047]
When the operating body 5 is pushed in and locked, the medicine carrier 4 swings, and the measuring hole 4c enters the space near the air suction groove 32 of the hopper 3a from the medicine filling position as indicated by a two-dot chain line in FIG. Moving. At this time, the fine powder medicine filled in the measuring hole 4c is worn by the thick portion 3g around the medicine discharge hole 3b, and a single dose of fine powder medicine is in the space near the air suction groove 32. It is conveyed to.
[0048]
Next, when the air in the housing 1 is sucked from the inhalation hole 2f of the mouthpiece 2 with the inspiratory pressure of the patient, the inside of the housing 1 becomes a negative pressure, and the external air is removed from the air in the housing 1 as shown by the arrows in FIG. It is sucked into the housing 1 from the inlet 1i, passes through the air suction groove 32 of the mouthpiece 2, and reaches the medicine suction flow path 2c of the mouthpiece 2. Thereby, an air impact is applied to the fine powder medicine filled in the measurement hole 4c of the medicine carrier 4, and the fine powder medicine is scattered in the medicine suction channel 2c of the mouthpiece 2 and sucked air. At the same time, it enters the lung organ of the patient through the intake hole 2f.
[0049]
Next, by returning the operating body 5 to the original position, the medicine transport body 4 swings back and the measuring hole 4c returns to the medicine filling position below the medicine discharge hole 3b of the supply body 3.
[0050]
Thus, by the pushing operation of the operating body 5 and the returning operation of the operating body 5, the sliding portion 4e of the medicine transport body 4 slides with respect to the peripheral portion of the medicine discharge hole 3b of the supply body 3, and the medicine transport The measuring hole 4c of the body 4 performs an arc reciprocating motion between a position coinciding with the medicine discharge hole 3b and a space near the air suction groove 32.
[0051]
The measuring hole 4c of the medicine carrier 4 is formed between the shaft hole 4a of the medicine carrier 4 (the center of swinging of the medicine carrier 4) and the locking pin 4b of the medicine carrier 4 (the operating point of the operation body 5). Since it is located in the middle, the moving distance of the measuring hole 4c is shorter than the moving distance of the operating body 5, and compared with the conventional one that moves the same distance as the moving distance of the operating body 5, the slide around the measuring hole 4c. The moving distance is shortened, the amount of static electricity generated can be reduced, and the measurement performance of the fine powder medicine by the measurement hole 4c can be improved.
[0052]
Since the measuring hole 4c moves in a circular arc as shown in FIG. 21, when the fine powder medicine is worn, the fine powder medicine is applied to the hole wall 31c of the medicine discharge hole 3b of the hopper 3a as shown by the arrow in FIG. Flowing along. As a result, it is possible to prevent the fine powder medicine from entering between the supply body 3 and the medicine carrier 4 by staying in the vicinity of the hole wall 31c of the medicine discharge hole 3b.
[0053]
If the fine powder medicine in the hopper 3a is used up, the powder inhaler is discarded.
[0054]
【The invention's effect】
According to the powder inhaler of the present invention, the drug carrier is disposed so as to be swingable, and the metering hole is moved in an arc by the swing of the drug carrier. When moving toward the road, the fine powder medicine flows along the hole wall of the medicine discharge hole, so that the fine powder medicine can be smoothly cut off, and as a result, between the supply body and the medicine carrier. Therefore, it is possible to prevent the measurement of the powdery drug from being reduced and the operability of the drug carrier from being deteriorated due to the fine powdery drug being sandwiched between the two. In addition, a simple mechanism in which the metering hole reciprocates between the medicine discharge hole of the supply body and the intake passage can be completed, and the manufacturing cost can be reduced.
[0055]
Further, if the measuring hole is positioned between the swing center of the medicine transport body and the operating point of the operating body to the medicine transport body, the measuring hole of the medicine transport body is longer than the moving distance of the operating body. Can be shortened, the amount of accumulated static electricity can be reduced, and the quantitativeness of the fine powder drug and the decrease in the fine particle ratio can be prevented.
[0056]
Further, if the operation body is constituted by a push button, and the operation body is pressed to move the measuring hole from the filling position to the scattering position, the operation body also serves as a protective cap. In comparison with this, it is not necessary to move the operating body by a distance necessary to remove the protective cap from the suction port. As a result, it is not necessary to increase the operating distance of the operating body more than necessary, and the amount of static electricity can be reduced.
[0057]
In addition, if conductivity is imparted to the supply body, the medicine transport body, and the operation body, static electricity generated by friction can be leaked, and a quantitative amount of a very small amount of fine powder medicine is ensured and higher. A fine particle ratio can be obtained.
[0058]
Further, in the mechanism in which the measurement hole reciprocates between the medicine discharge hole of the supply body and the intake flow path as described above, if the measurement hole is a spherical concave bottomed hole, the patient cannot inhale. Even if the operating body is accidentally operated multiple times, it is possible to prevent the powdered medicine from being newly filled into the measuring hole and to inhale more than one dose of medicine into the patient's lungs. In addition, all of the medicine can be inhaled into the patient's lungs.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a powder inhaler according to an embodiment of the present invention.
FIG. 2 is a longitudinal sectional view of the powder inhaler.
FIG. 3 is a side view showing an exploded state of the powder inhaler.
FIG. 4 is a plan view of an upper housing of the powder inhaler.
FIG. 5 is a plan view of the lower housing of the powder inhaler.
FIG. 6 is a plan view of a lock body of the powder inhaler.
FIG. 7 is a plan view of an operating body of the powder inhaler.
FIG. 8 is a plan view of a base body of the powder inhaler.
9A is a plan view of a drug carrier of the powder inhaler, and FIG. 9B is a side view of the drug carrier.
FIG. 10A is a plan view of a push-up body of the powder inhaler, and FIG. 10B is a cross-sectional view showing a mounting state of the push-up body to the base body.
FIG. 11 is a plan view showing a counter of the powder inhaler.
12A is a plan view of a supply body of the powder inhaler, and FIG. 12B is a bottom view of the supply body.
FIG. 13A is a plan view of the mouthpiece of the powder inhaler, and FIG. 13B is a side view of the mouthpiece.
FIG. 14 is a plan view showing the assembly order of the powder inhaler.
FIG. 15 is a plan view showing the assembly order of the powder inhaler.
FIG. 16 is a plan view showing the assembly order of the powder inhaler.
FIG. 17 is a plan view showing the assembly order of the powder inhaler.
FIG. 18 is a plan view showing the assembly order of the powder inhaler.
FIG. 19 is a plan view showing the operation of the medicine carrier of the powder inhaler.
FIG. 20 is a plan view showing the locking operation of the operating body of the powder inhaler.
FIG. 21 is a schematic diagram showing a fine powder medicine operation by the powder inhaler.
FIG. 22 is a schematic view showing a fine powder medicine cutting operation by a conventional powder inhaler.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Housing 3 Supply body 3 Supply body 3b Drug supply hole 4 Drug conveyance body 4c Measurement hole of a drug conveyance body

Claims (6)

ハウジングと、
多回数用量の微粉末状薬剤を収容し、下面に薬剤排出孔が開口した供給体と、
前記供給体の薬剤排出孔から微粉末状薬剤が供給され、一回分の用量分の容積を有する計量孔を上面側に有する薬剤搬送体と、
往復動自在に配設されて前記薬剤搬送体を操作する操作体とを備え、
前記薬剤搬送体を前記供給体の下面に接触させた状態で動かすことにより、前記計量孔に充填された微粉末状薬剤を前記薬剤排出孔の位置から吸気流路の中へ移動させる粉末吸入器において、
前記ハウジングの先端側に前記マウスピース、基端側に前記操作体をそれぞれ設け、前記ハウジング内に前記供給体と薬剤搬送体を収容し、
前記薬剤搬送体を揺動自在に配設し、
前記計量孔を、前記薬剤搬送体の揺動中心を中心として180°未満の円弧状の軌跡を描いて往復運動させるように構成したことを特徴とする粉末吸入器。
A housing;
A supply body containing a multi-dose fine powder drug and having a drug discharge hole on its lower surface;
A drug carrier having a metering hole on the upper surface side, the fine powder drug being supplied from the drug discharge hole of the supply body, and having a volume for one dose;
An operation body that is disposed so as to freely reciprocate and operates the drug delivery body,
A powder inhaler for moving the fine powder medicine filled in the metering hole from the position of the medicine discharge hole into the intake passage by moving the medicine carrier in contact with the lower surface of the supply body In
The mouthpiece is provided on the distal end side of the housing, the operating body is provided on the proximal end side, and the supply body and the drug delivery body are accommodated in the housing,
The drug carrier is disposed so as to be swingable,
The powder inhaler, wherein the measuring hole is configured to reciprocate while drawing an arcuate trajectory of less than 180 ° around the center of swinging of the medicine carrier .
前記計量孔を、前記薬剤搬送体の揺動中心と前記薬剤搬送体への前記操作体の作用点との間に位置させたことを特徴とする請求項1に記載の粉末吸入器。2. The powder inhaler according to claim 1, wherein the measuring hole is positioned between a swing center of the medicine carrier and an operating point of the operation body on the medicine carrier. 前記操作体は押し釦であって、前記操作体を押圧することにより前記計量孔を前記薬剤吸入流路の中へ移動させるように構成したことを特徴とする請求項1又は2に記載の粉末吸入器。3. The powder according to claim 1, wherein the operation body is a push button, and is configured to move the measuring hole into the medicine suction channel by pressing the operation body. Inhaler. 前記供給体、前記薬剤搬送体及び前記操作体に導電性を付与したことを特徴とする請求項1から3のいずれかに記載の粉末吸入器。The powder inhaler according to any one of claims 1 to 3, wherein conductivity is imparted to the supply body, the drug delivery body, and the operation body. 前記計量孔は球面凹状の有底孔であることを特徴とする請求項1から4のいずれかに記載の粉末吸入器。The powder inhaler according to any one of claims 1 to 4, wherein the measuring hole is a bottomed hole having a spherical concave shape. 前記薬剤搬送体を上方に弾性付勢することにより、前記薬剤搬送体に形成された肉厚で円弧状の摺動部を、前記供給体の薬剤排出孔の周囲に弾性的に接触させた状態で、前記薬剤搬送体を揺動させるように構成したことを特徴とする請求項1から5のいずれかに記載の粉末吸入器。 A state in which the thick and arcuate sliding portion formed on the medicine carrier is elastically contacted with the periphery of the medicine discharge hole of the supply body by elastically biasing the medicine carrier. The powder inhaler according to any one of claims 1 to 5 , wherein the medicine carrier is configured to swing .
JP2002298726A 2002-10-11 2002-10-11 Powder inhaler Expired - Fee Related JP3616877B2 (en)

Priority Applications (19)

Application Number Priority Date Filing Date Title
JP2002298726A JP3616877B2 (en) 2002-10-11 2002-10-11 Powder inhaler
AU2003272935A AU2003272935C1 (en) 2002-10-11 2003-10-08 Powder inhalation device
EP09004039A EP2065066A3 (en) 2002-10-11 2003-10-08 Powder inhalator
BR0306930-3A BR0306930A (en) 2002-10-11 2003-10-08 Dust inhaler
SG200500595-4A SG134169A1 (en) 2002-10-11 2003-10-08 Powder inhalator
MXPA04005500A MXPA04005500A (en) 2002-10-11 2003-10-08 Powder inhalation device.
EP03754018A EP1452198A4 (en) 2002-10-11 2003-10-08 Powder inhalation device
KR1020047009651A KR100581385B1 (en) 2002-10-11 2003-10-08 Powder inhalation device
CA2694183A CA2694183C (en) 2002-10-11 2003-10-08 Powder inhalator
PCT/JP2003/012866 WO2004033010A1 (en) 2002-10-11 2003-10-08 Powder inhalation device
CN2003801000920A CN1684732B (en) 2002-10-11 2003-10-08 Powder inhalator
US10/500,141 US7387122B2 (en) 2002-10-11 2003-10-08 Powder inhalator
CA2467975A CA2467975C (en) 2002-10-11 2003-10-08 Powder inhalator
TW092128127A TWI252763B (en) 2002-10-11 2003-10-09 Powder inhalator
ARP030103699A AR041582A1 (en) 2002-10-11 2003-10-10 DUST INHALER
MYPI20033884A MY135607A (en) 2002-10-11 2003-10-11 Powder inhalator
EGNA2004000053 EG25378A (en) 2002-10-11 2004-07-14 Powder inhalator.
HK06100356.2A HK1080401A1 (en) 2002-10-11 2006-01-10 Powder inhalation device
US11/401,938 US8235039B2 (en) 2002-10-11 2006-04-12 Powder inhalator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002298726A JP3616877B2 (en) 2002-10-11 2002-10-11 Powder inhaler

Publications (2)

Publication Number Publication Date
JP2004129915A JP2004129915A (en) 2004-04-30
JP3616877B2 true JP3616877B2 (en) 2005-02-02

Family

ID=32288052

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002298726A Expired - Fee Related JP3616877B2 (en) 2002-10-11 2002-10-11 Powder inhaler

Country Status (1)

Country Link
JP (1) JP3616877B2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100431634C (en) * 2005-04-04 2008-11-12 陈庆堂 Dry powder aerosolizing inhalator
JP4500280B2 (en) * 2005-06-08 2010-07-14 日立オートモティブシステムズ株式会社 Powder drug dispenser
JP4832858B2 (en) * 2005-11-09 2011-12-07 日立オートモティブシステムズ株式会社 Powder drug dispenser
JP5205049B2 (en) * 2007-12-28 2013-06-05 日立オートモティブシステムズ株式会社 Powder drug dispenser
CN106237463A (en) * 2016-08-08 2016-12-21 中山市美捷时包装制品有限公司 A kind of depot dry powder inhalation system
CN106039497A (en) * 2016-08-08 2016-10-26 中山市美捷时包装制品有限公司 Counting mechanism of dry powder suction device

Also Published As

Publication number Publication date
JP2004129915A (en) 2004-04-30

Similar Documents

Publication Publication Date Title
US8235039B2 (en) Powder inhalator
JP4948534B2 (en) Powder inhaler
KR102018927B1 (en) Inhaler
TWI689324B (en) Dry powder inhaler and inhalation actuated mechanism thereof
AU2009250438B2 (en) Powder inhaler
JP2007521844A (en) Dry powder inhaler
CA2558566A1 (en) Unit dose dry powder inhaler
JP3616877B2 (en) Powder inhaler
JP3590848B1 (en) Powder inhaler
AU2008201239B2 (en) Powder inhalation
CN220125274U (en) Quasi-nano device
CN113117193B (en) Inhalation device
CN116672549A (en) Quasi-nano device

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20040610

A871 Explanation of circumstances concerning accelerated examination

Free format text: JAPANESE INTERMEDIATE CODE: A871

Effective date: 20040610

A975 Report on accelerated examination

Free format text: JAPANESE INTERMEDIATE CODE: A971005

Effective date: 20040712

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20040721

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20040827

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20041013

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20041025

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20101119

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20131119

Year of fee payment: 9

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees