JP5041386B2

JP5041386B2 - Inhaler for powder formulation

Info

Publication number: JP5041386B2
Application number: JP2010147107A
Authority: JP
Inventors: 勲西東
Original assignee: Shinko Chemical Co Ltd
Current assignee: Shinko Chemical Co Ltd
Priority date: 2010-06-29
Filing date: 2010-06-29
Publication date: 2012-10-03
Anticipated expiration: 2030-06-29
Also published as: JP2012010724A

Description

この発明は、所定量の粉末製剤を肺などに吸引して投与する使い捨て可能な粉末製剤用の吸入器に関する。 The present invention relates to an inhaler for a disposable powder formulation in which a predetermined amount of a powder formulation is aspirated and administered to a lung or the like.

所定量の粉末製剤を肺などに吸引して投与するために、使い捨て可能な吸入器が提案されている（たとえば特許文献１）。 A disposable inhaler has been proposed in order to suck and administer a predetermined amount of a powder preparation to the lung or the like (for example, Patent Document 1).

従来の吸入器は、前後に長い板状の上部材と、前後方向にエア通路を形成し、上部材と一体に組み合わせる下部材と、上部材、下部材の後端部に挟み込むプレートとを設け、粉末製剤は、プレートの中央部に形成する凹部に収納されている。なお、凹部の底には、通気口が開口されており、プレートの上面、下面は、それぞれ後方に引くことにより引剥し可能なシールテープを介してシールされている。そこで、プレートの上面、下面のシールテープを除去した上、エア通路が開口する下部材、上部材の共通の前端部を口にくわえて息を吸い込むことにより、プレートの凹部に収納されている粉末製剤を肺などに一挙に吸引して投与することができる。 A conventional inhaler is provided with a plate-like upper member that is long in the front-rear direction, a lower member that forms an air passage in the front-rear direction and is combined with the upper member, and a plate that is sandwiched between rear ends of the upper member and the lower member The powder preparation is housed in a recess formed in the center of the plate. Note that a vent is opened at the bottom of the recess, and the upper and lower surfaces of the plate are sealed with a seal tape that can be peeled off by pulling backward. Therefore, after removing the sealing tape on the upper and lower surfaces of the plate, the lower member that opens the air passage, and the common front end of the upper member is added to the mouth to breathe in and the powder stored in the concave portion of the plate The preparation can be aspirated and administered to the lungs at once.

特表平１１−５１０４１２号公報Japanese National Patent Publication No. 11-510412

かかる従来技術によるときは、吸入器は、部品点数が多い上、プレートやシールテープは、たとえばアルミニウムフォイルとプラスチックフィルムとの複合材料を使用する必要があるから、製造コストや廃棄処分コストが過大になりがちであり、使い捨てにするには必ずしも適していないという問題があった。また、粉末製剤は、プレートに形成する凹部に収納するため、必要十分な投与量を収納することができないことがあるという問題もあった。 According to such a conventional technique, the inhaler has a large number of parts, and the plate and the seal tape need to use a composite material of, for example, an aluminum foil and a plastic film. Therefore, the manufacturing cost and the disposal cost are excessive. There is a problem that it is prone to be used and is not necessarily suitable for disposable use. In addition, since the powder preparation is stored in the recess formed in the plate, there is a problem that a necessary and sufficient dose may not be stored.

そこで、この発明の目的は、かかる従来技術の問題に鑑み、プラスチック材料によって一体成形可能な本体、回転筒、キャップを組み合わせることによって、製造コスト、廃棄処分コストを低くし、必要十分な投与量の粉末製剤を収納することができる使い捨て可能な粉末製剤用の吸入器を提供することにある。 Accordingly, in view of the problems of the prior art, the object of the present invention is to reduce the manufacturing cost and the disposal cost by combining a main body, a rotating cylinder, and a cap that can be integrally molded with a plastic material. The object is to provide an inhaler for a disposable powder formulation which can contain a powder formulation.

かかる目的を達成するための請求項１の発明の構成は、前後に長い両端開放の中空の本体と、本体の後部に相対回転可能に連結する回転筒と、回転筒の後部に装着するキャップとを備えてなり、本体は、エア孔付きの仕切板を中間部に設け、仕切板の前部に吸引部を形成するとともに後部外周にエア開口を設け、回転筒は、本体の後部に差し込む筒部材と、筒部材の前端に設ける開閉孔付きの前板と、筒部材の後部外周に形成する開閉開口と、筒部材の周りに設ける外筒とを有し、外筒は、接続板を介して筒部材の後端に接続するとともに、外周の一部を径方向に突出させるエアダクトを開閉開口に対応させて前後方向に形成し、回転筒は、正逆に回転させて準備位置と使用位置とにセット可能であり、準備位置では、筒部材の内部が気密の粉末製剤の収納部となり、使用位置では、開閉開口がエア開口と合致して収納部が外部と連通し、開閉孔がエア孔と合致して収納部が吸引部と連通することをその要旨とする。 In order to achieve this object, the structure of the invention of claim 1 includes: a hollow main body that is open at both ends in the front-rear direction; a rotating cylinder that is connected to the rear part of the main body so as to be relatively rotatable; and a cap that is attached to the rear part of the rotating cylinder; The main body is provided with a partition plate with air holes in the middle part, a suction part is formed in the front part of the partition plate and an air opening is provided in the outer periphery of the rear part, and the rotating cylinder is a cylinder inserted into the rear part of the main body A member, a front plate with an opening / closing hole provided at the front end of the cylindrical member, an opening / closing opening formed at the outer periphery of the rear portion of the cylindrical member, and an outer cylinder provided around the cylindrical member, and the outer cylinder via the connection plate The air duct is connected to the rear end of the cylinder member, and an air duct that projects a part of the outer circumference in the radial direction is formed in the front-rear direction corresponding to the opening and closing opening, and the rotating cylinder is rotated forward and backward to prepare position and use position. In the preparation position, the inside of the cylinder member is airtight. The gist is that it becomes a powder product storage part, and in the use position, the opening / closing opening matches the air opening and the storage part communicates with the outside, and the opening / closing hole matches the air hole and the storage part communicates with the suction part. To do.

なお、本体は、エアダクトの前端を開閉する外フランジを設けてもよい。 The main body may be provided with an outer flange that opens and closes the front end of the air duct.

請求項３の発明の構成は、前後に長い両端開放の中空の本体と、本体の後部に相対回転可能に連結する回転筒と、回転筒の後部に装着するキャップとを備えてなり、本体は、エア孔付きの仕切板を中間部に設け、仕切板の前部に吸引部を形成するとともに後部外周にエア開口を設け、回転筒は、本体の後部に差し込む筒部材と、筒部材の前端に設ける開閉孔付きの前板と、筒部材の後部外周に形成する開閉開口とを有し、筒部材は、前端部の断面積を狭める斜面を形成し、前板は、エア整流用の後向きの凸部を設け、回転筒は、正逆に回転させて準備位置と使用位置とにセット可能であり、準備位置では、筒部材の内部が気密の粉末製剤の収納部となり、使用位置では、開閉開口がエア開口と合致して収納部が外部と連通し、開閉孔がエア孔と合致して収納部が吸引部と連通することをその要旨とする。 The structure of the invention of claim 3 comprises a hollow main body that is open at both ends in the front and rear, a rotating cylinder that is connected to the rear part of the main body so as to be relatively rotatable, and a cap that is attached to the rear part of the rotating cylinder. A partition plate with air holes is provided in the middle part, a suction part is formed in the front part of the partition plate, an air opening is provided in the outer periphery of the rear part, the rotating cylinder is inserted into the rear part of the main body, and the front end of the cylindrical member A front plate with an opening / closing hole provided on the opening and an opening / closing opening formed on the outer periphery of the rear portion of the cylindrical member, the cylindrical member forming a slope that narrows the cross-sectional area of the front end portion, and the front plate is a rear facing for air rectification The rotating cylinder can be rotated in the forward and reverse directions and can be set at the preparation position and the use position.In the preparation position, the inside of the cylinder member becomes an airtight powder preparation storage section. The opening / closing opening matches the air opening, the storage part communicates with the outside, and the opening / closing hole is the air hole. Housing portion Consistent to its gist that communicates with the suction unit.

請求項４の発明の構成は、前後に長い両端開放の中空の本体と、本体の後部に相対回転可能に連結する回転筒と、回転筒の後部に装着するキャップとを備えてなり、本体は、エア孔付きの仕切板を中間部に設け、仕切板の前部に吸引部を形成するとともに後部外周にエア開口を設け、回転筒は、本体の後部に差し込む筒部材と、筒部材の前端に設ける開閉孔付きの前板と、筒部材の後部外周に形成する開閉開口とを有し、仕切板は、エア整流用の前向きの凸部を設け、回転筒は、正逆に回転させて準備位置と使用位置とにセット可能であり、準備位置では、筒部材の内部が気密の粉末製剤の収納部となり、使用位置では、開閉開口がエア開口と合致して収納部が外部と連通し、開閉孔がエア孔と合致して収納部が吸引部と連通することをその要旨とする。 The structure of the invention of claim 4 comprises a hollow main body having both ends open at the front and rear, a rotating cylinder connected to the rear part of the main body so as to be relatively rotatable, and a cap attached to the rear part of the rotating cylinder. A partition plate with air holes is provided in the middle part, a suction part is formed in the front part of the partition plate, an air opening is provided in the outer periphery of the rear part, the rotating cylinder is inserted into the rear part of the main body, and the front end of the cylindrical member A front plate with an opening / closing hole provided on the opening and an opening / closing opening formed on the outer periphery of the rear portion of the cylinder member, the partition plate is provided with a forward-facing convex portion for air rectification, and the rotating cylinder is rotated forward and backward. It can be set at the preparation position and the use position. At the preparation position, the inside of the cylindrical member is an airtight powder formulation storage part. At the use position, the opening / closing opening matches the air opening and the storage part communicates with the outside. The opening / closing hole matches the air hole and the storage part communicates with the suction part. And effect.

かかる発明の構成によるときは、本体の後部に相対回転可能に連結される回転筒は、キャップを介して後端が閉じられており、準備位置と使用位置とにセット可能である。また、本体の前部には、中空の吸引部が形成されている。そこで、回転筒は、準備位置では、筒部材の開閉開口と開閉孔とが外部に対して閉じられ、筒部材の内部が気密の粉末製剤の収納部を形成し、使用位置では、開閉開口の位置が本体の後部のエア開口の位置に合致して収納部が外部と連通し、同時に、開閉孔が本体のエア孔に合致し、収納部は吸引部側にも連通する。したがって、使用位置では、本体の後部のエア開口から、収納部を介して吸引部にまで連通するエアの流路が形成されるため、吸引部を口にくわえて息を吸い込むことにより、収納部に収納されている粉末製剤の全量を一気に吸引して肺などに投与することができる。 According to the configuration of the present invention, the rotating cylinder connected to the rear portion of the main body so as to be relatively rotatable is closed at the rear end via the cap, and can be set at the preparation position and the use position. A hollow suction part is formed at the front part of the main body. In view of this, the rotary cylinder has an opening / closing opening and an opening / closing hole of the cylinder member that are closed to the outside in the preparation position, and the inside of the cylinder member forms an airtight powder preparation storage section. The position matches the position of the air opening at the rear of the main body and the storage portion communicates with the outside. At the same time, the opening / closing hole matches the air hole of the main body, and the storage portion also communicates with the suction portion side. Accordingly, in the use position, an air flow path is formed which communicates from the air opening at the rear of the main body to the suction unit via the storage unit. The entire amount of the powder formulation stored in the can can be sucked at a stroke and administered to the lung or the like.

なお、本体、回転筒は、それぞれポリプロピレン、ポリメチルペンテンなどの硬質プラスチック材料により一体成形されている。そこで、部品点数も少なく、製造コスト、廃棄処分コストを低く抑えることができる。また、回転筒の筒部材の内部に形成する粉末製剤の収納部は、粉末製剤の１回分の投与量を収納するように、必要十分な容積に形成することができる。 The main body and the rotating cylinder are integrally formed of a hard plastic material such as polypropylene and polymethylpentene. Therefore, the number of parts is small, and manufacturing costs and disposal costs can be kept low. Moreover, the storage part of the powder formulation formed inside the cylindrical member of the rotating cylinder can be formed in a necessary and sufficient volume so as to store a single dose of the powder formulation.

本体の仕切板上のエア孔、回転筒の前板上の開閉孔は、回転筒の使用位置において両者が合致することにより、粉末製剤を吸引する際に適切な吸気抵抗を発現し、吸引動作を円滑にするためののど部分を形成する。なお、のど部分の断面積は、０．１〜３０mm² 、特に好ましくは１．０〜１０mm² に設定することが好ましい。のど部分の断面積が小さ過ぎると吸気抵抗が過大になり、断面積が大き過ぎると吸気抵抗が過小になり、いずれの場合も十分なエア量を吸引できず、必要な粉末製剤の投与量を一気に吸引することが難しくなる。 The air hole on the partition plate of the main unit and the opening / closing hole on the front plate of the rotating cylinder are matched to each other at the usage position of the rotating cylinder, so that an appropriate inhalation resistance is expressed when sucking the powder formulation, and the suction operation Form a throat for smoothing. Here, the cross-sectional area of the throat portion, 0.1 to 30 mm ^2, particularly preferably it is preferably set to 1.0 to 10 mm ^2. If the cross-sectional area of the throat is too small, the inspiratory resistance will be excessive, and if the cross-sectional area is too large, the inspiratory resistance will be too small. It becomes difficult to suck at a stretch.

のど部分の断面積は、エア孔、開閉孔が同形同大であるときは、それぞれの開口面積に等しく、両者が異なるときは、小さい方の開口面積相当となる。また、エア孔、開閉孔は、それぞれの形状を円形としてもよく、円形以外の多角形などとしてもよい。また、２組以上のエア孔、開閉孔を併設してもよく、そのときののど部分の断面積は、各エア孔、開閉孔の開口面積の合計を前記数値範囲内に設定することが好ましい。 The cross-sectional area of the throat portion is equal to the opening area when the air hole and the opening / closing hole have the same shape and size, and when the air hole and the opening / closing hole are different from each other, the sectional area is equivalent to the smaller opening area. In addition, the air hole and the opening / closing hole may have a circular shape or a polygon other than a circular shape. Two or more sets of air holes and opening / closing holes may be provided, and the cross-sectional area of the throat portion at that time is preferably set so that the total opening area of each air hole and opening / closing hole is within the numerical range. .

本体、回転筒は、その一方または双方を透明材によって一体成形することにより、吸引前に粉末製剤が収納部に正しく収納されていること、吸引後に粉末製剤が回転筒や本体の一部などに付着していないことなどを確認し、吸引動作が正しく完了したことを目視により確かめることができる。なお、透明材としては、ポリプロピレン、ポリメチルペンテンなどの他、たとえば電気化学工業（株）製のスチレンブタジエン共重合体（商品名「クリアレン」）が好適である。 One or both of the main body and the rotating cylinder are integrally formed of a transparent material, so that the powder preparation is correctly stored in the storage section before suction, and after the suction, the powder preparation is in the rotating cylinder or a part of the main body. It can be confirmed by visual observation that the suction operation has been correctly completed by confirming that it has not adhered. As the transparent material, polypropylene, polymethylpentene and the like, for example, a styrene butadiene copolymer (trade name “Clearen”) manufactured by Denki Kagaku Kogyo Co., Ltd. is suitable.

回転筒の筒部材の周りに外筒を設け、外筒の一部にエアダクトを形成することにより、吸引用のエアは、エアダクトを介して後向きに流れ、本体のエア開口、回転筒の開閉開口に流入すると、回転筒の後部のキャップによって筒部材内に前向きに折り返すようにして流れるため、筒部材内の収納部に収納されている粉末製剤の全量を一層確実に吸引させることができる。 By providing an outer cylinder around the cylindrical member of the rotating cylinder and forming an air duct in a part of the outer cylinder, the air for suction flows backward through the air duct, the air opening of the main body, the opening and closing opening of the rotating cylinder When it flows into the tube, it flows so as to be folded back forward into the cylindrical member by the cap at the rear part of the rotating cylinder, so that the entire amount of the powder formulation stored in the storage part in the cylindrical member can be sucked more reliably.

本体に設ける外フランジは、使用位置では、エアダクトの前端を開放してスムースな吸引ができ、準備位置では、エアダクトを閉じ、エアダクト内を清潔に保つことができる。 The outer flange provided on the main body can be smoothly sucked by opening the front end of the air duct in the use position, and the air duct can be closed and kept clean in the preparation position.

筒部材の前端部に形成する斜面は、前板に形成するエア整流用の後向きの凸部とともに、筒部材内に流れる吸引用のエアの流速を高め、有害なうずの発生を防止し、粉末製剤の残留をなくすることができる。本体の仕切板に設けるエア整流用の前向きの凸部についても、同様である。 The slope formed at the front end of the cylindrical member, together with the rearward convex part for air rectification formed on the front plate, increases the flow velocity of the suction air flowing in the cylindrical member, prevents the generation of harmful vortex, The residue of the preparation can be eliminated. The same applies to the forward convex portion for air rectification provided on the partition plate of the main body.

全体分解斜視説明図Whole exploded perspective view 全体斜視説明図Overall perspective view 本体の構成説明図Configuration diagram of the main unit 回転筒の構成説明図Explanation of the structure of the rotating cylinder 回転筒の横断面説明図Cross-sectional illustration of a rotating cylinder 要部拡大縦断面説明図Explanatory drawing of main part enlarged vertical section 要部拡大横断面説明図Explanatory diagram of enlarged cross section of main part 使用状態を示す全体縦断面図Overall longitudinal sectional view showing the state of use

以下、図面を以って発明の実施の形態を説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

粉末製剤用の吸入器は、本体１０と、回転筒２０と、キャップ３０とを備えてなる（図１）。なお、図１（Ａ）、（Ｂ）は、それぞれ後方側、前方側から見る全体分解斜視図である。 The inhaler for powder preparation includes a main body 10, a rotating cylinder 20, and a cap 30 (FIG. 1). 1A and 1B are overall exploded perspective views seen from the rear side and the front side, respectively.

回転筒２０は、本体１０の後部に連結され（図２）、回転筒２０の後部には、キャップ３０が装着されている。回転筒２０は、本体１０に対して正逆に相対回転可能になっており、一方の回転限において準備位置にセットされ、他方の回転限において使用位置にセットすることができる。なお、図２（Ａ）、（Ｂ）は、それぞれ回転筒２０の準備位置、使用位置を示している。 The rotary cylinder 20 is connected to the rear part of the main body 10 (FIG. 2), and a cap 30 is attached to the rear part of the rotary cylinder 20. The rotary cylinder 20 is rotatable relative to the main body 10 in the forward and reverse directions, and can be set at the preparation position at one rotation limit and at the use position at the other rotation limit. 2A and 2B show a preparation position and a use position of the rotary cylinder 20, respectively.

本体１０は、前後に長い両端開放の中空に形成されている（図１、図３）。ただし、図３（Ａ）、（Ｂ）は、それぞれ図１（Ｂ）のＸ1 −Ｘ1 線矢視相当拡大断面図、図３（Ａ）のＸ2 矢視相当図である。本体１０の中間部には、エア孔６５、６５を形成する仕切板１４が設けられ、仕切板１４の前後には、それぞれ筒１６、１２が直線状に設けられている。なお、前部の筒１６は、後部の筒１２よりやや細く、長く形成され、筒１６、１２の外周は、前向きの斜面１６ｃを介して連続している。 The main body 10 is formed in a hollow with both ends open at the front and rear (FIGS. 1 and 3). 3A and 3B are enlarged sectional views corresponding to the line X1-X1 in FIG. 1B and the view corresponding to the arrow X2 in FIG. A partition plate 14 that forms air holes 65, 65 is provided in an intermediate portion of the main body 10, and cylinders 16, 12 are respectively provided in a straight line before and after the partition plate 14. The front cylinder 16 is slightly thinner and longer than the rear cylinder 12, and the outer circumferences of the cylinders 16 and 12 are continuous via a forward slope 16c.

前部の筒１６の外周後半部には、前後方向のローレット１６ａ、１６ａ…が形成されている。筒１６の内部は、前向きに開拡する短いテーパ部１６ｂが仕切板１４の直近前方に形成され、仕切板１４の前方全部が中空の吸引部５１となっている。 In the rear half of the outer periphery of the front cylinder 16, knurls 16a, 16a,. Inside the tube 16, a short taper portion 16 b that expands forward is formed immediately in front of the partition plate 14, and the entire front portion of the partition plate 14 is a hollow suction portion 51.

仕切板１４のエア孔６５、６５は、仕切板１４の直径上に対称形に開口されている。また、仕切板１４には、エア孔６５、６５に挟まれるようにして、エア整流用の前向きの円錐形の凸部１４ａが中心部に形成されている。 The air holes 65 and 65 of the partition plate 14 are opened symmetrically on the diameter of the partition plate 14. Further, the partition plate 14 is formed with a forward conical convex portion 14a for air rectification at the center so as to be sandwiched between the air holes 65, 65.

後部の筒１２の中間部外周には、外フランジ１１が形成されている。また、筒１２の外面には、浅い溝状のエア通路１５が前後方向に形成されている。エア通路１５は、外フランジ１１を分断しており、エア通路１５の後端には、エア開口６２が形成されている。ただし、エア開口６２は、筒１２の後端を含む後部外周に設けることができる。エア通路１５、エア開口６２は、仕切板１４上のエア孔６５、６５を通る筒１２の直径上に配置されており、エア通路１５の底面は、筒１２の外径より僅かに小径の同心円状となっている。また、外フランジ１１の前方には、エア通路１５を両側から狭めるようにして左右一対のガイドリブ１２ｂ、１２ｂが前後方向に立設されており、各ガイドリブ１２ｂの前後両端は、それぞれ前向き、後向きの斜面に形成されている。 An outer flange 11 is formed on the outer periphery of the intermediate portion of the rear cylinder 12. A shallow groove-like air passage 15 is formed in the front-rear direction on the outer surface of the cylinder 12. The air passage 15 divides the outer flange 11, and an air opening 62 is formed at the rear end of the air passage 15. However, the air opening 62 can be provided on the outer periphery of the rear part including the rear end of the cylinder 12. The air passage 15 and the air opening 62 are disposed on the diameter of the cylinder 12 passing through the air holes 65 and 65 on the partition plate 14, and the bottom surface of the air passage 15 is a concentric circle having a slightly smaller diameter than the outer diameter of the cylinder 12. It has become a shape. Further, a pair of left and right guide ribs 12b, 12b are provided in front of the outer flange 11 so as to narrow the air passage 15 from both sides, and the front and rear ends of each guide rib 12b are forward and rearward, respectively. It is formed on the slope.

外フランジ１１は、前面側が前向きの斜面に形成され、後面側には、左右のストッパリブ１１ａ、１１ａが筒１２の外周上に対称形に設けられている。ストッパリブ１１ａ、１１ａは、エア通路１５の中心から、それぞれ筒１２の周方向に９０°の範囲に形成されている。また、一方のストッパリブ１１ａの先端付近には、低い外向きの係合リブ１１ａ1 が形成されている。筒１２の外周には、外フランジ１１と後端との中間部に係合リブ１２ａが形成されている。筒１２の内周と仕切板１４との間には、後向きの斜面１２ｃが形成されている。 The outer flange 11 is formed with a front-facing slope on the front side, and left and right stopper ribs 11 a and 11 a are provided symmetrically on the outer periphery of the cylinder 12 on the rear side. The stopper ribs 11 a and 11 a are each formed in a range of 90 ° in the circumferential direction of the cylinder 12 from the center of the air passage 15. A low outward engagement rib 11a1 is formed in the vicinity of the tip of one stopper rib 11a. On the outer periphery of the cylinder 12, an engagement rib 12a is formed at an intermediate portion between the outer flange 11 and the rear end. A rearwardly inclined surface 12 c is formed between the inner periphery of the cylinder 12 and the partition plate 14.

回転筒２０は、筒部材２２と、筒部材２２の前端に設ける開閉孔６４、６４付きの前板２１と、筒部材２２の後部外周に形成する開閉開口６３とを有する（図１、図４）。ただし、筒部材２２の後半部には、エアダクト２４を形成する外筒２３が付設され、回転筒２０の後部には、キャップ３０用の装着部２６が形成されている。開閉孔６４、６４、開閉開口６３は、それぞれ本体１０のエア孔６５、６５、エア開口６２に対応しており、開閉開口６３は、前板２１上の開閉孔６４、６４を通る筒部材２２の直径上に配置されている。なお、図４（Ａ）、（Ｂ）は、それぞれ図１（Ｂ）のＹ1 −Ｙ1 線、Ｙ2 −Ｙ2 線矢視相当拡大断面図であり、図４（Ｃ）、（Ｄ）は、それぞれ図４（Ａ）のＹ3 、Ｙ4 矢視相当図である。 The rotary cylinder 20 includes a cylinder member 22, a front plate 21 with opening / closing holes 64 and 64 provided at the front end of the cylinder member 22, and an opening / closing opening 63 formed on the outer periphery of the rear portion of the cylinder member 22 (FIGS. 1 and 4). ). However, an outer cylinder 23 forming an air duct 24 is attached to the rear half of the cylindrical member 22, and a mounting part 26 for the cap 30 is formed at the rear part of the rotating cylinder 20. The opening / closing holes 64 and 64 and the opening / closing opening 63 correspond to the air holes 65 and 65 and the air opening 62 of the main body 10, respectively, and the opening / closing opening 63 passes through the opening / closing holes 64 and 64 on the front plate 21. Is arranged on the diameter. 4A and 4B are enlarged cross-sectional views corresponding to the lines Y1-Y1 and Y2-Y2 in FIG. 1B, respectively. FIGS. 4C and 4D are respectively shown in FIGS. FIG. 5 is a view corresponding to arrows Y3 and Y4 in FIG.

筒部材２２は、前端部の断面積を狭める斜面２２ａ、２２ａを対称形に形成し、前板２１は、開閉孔６４、６４の間に挟むようにして、エア整流用の後向きの円錐形の凸部２１ａを設けている。すなわち、開閉孔６４、６４、凸部２１ａは、前板２１の後面側において、斜面２２ａ、２２ａに挟まれるようにして形成されている。筒部材２２の前端には、面取り２２ｃ、２２ｃが形成され、筒部材２２は、本体１０の後部の筒１２に差し込むことができる。なお、開閉開口６３は、筒部材２２の後端に向けて開放され、開閉開口６３の前端には、筒部材２２の内側に向けて斜面６３ａが形成されている。また、開閉開口６３の前端には、低いシールリブ６３ｂが筒部材２２の外周に沿って形成されている。 The cylindrical member 22 is formed with symmetrical slopes 22a and 22a for narrowing the cross-sectional area of the front end portion, and the front plate 21 is sandwiched between the opening and closing holes 64 and 64 so that the rear conical convex portion for air rectification is provided. 21a is provided. That is, the opening / closing holes 64 and 64 and the convex portion 21a are formed on the rear surface side of the front plate 21 so as to be sandwiched between the inclined surfaces 22a and 22a. Chamfers 22 c and 22 c are formed at the front end of the cylinder member 22, and the cylinder member 22 can be inserted into the cylinder 12 at the rear portion of the main body 10. The opening / closing opening 63 is opened toward the rear end of the cylindrical member 22, and a slope 63 a is formed at the front end of the opening / closing opening 63 toward the inside of the cylindrical member 22. A low seal rib 63 b is formed at the front end of the opening / closing opening 63 along the outer periphery of the cylindrical member 22.

回転筒２０は、筒部材２２の後半部の周りに外筒２３を設けている。外筒２３は、後端部に内装する接続板２５を介して筒部材２２の後端に接続され、筒部材２２に対し、互いに同心状に連結されている。また、外筒２３は、外周の一部を径方向に突出させてトンネル状のエアダクト２４を形成し、エアダクト２４は、筒部材２２の後部外周の開閉開口６３に対応するとともに、外筒２３の全長に亘って前後方向に形成されている。なお、筒部材２２の後端は、開閉開口６３を形成しない側の約半周が接続板２５の前面に接続されており、開閉開口６３を形成する側の約半周は、接続板２５の前面から隙間ｄだけ離れ、開閉開口６３の両側の端面２２ｂ、２２ｂとなっている。外筒２３の外径、エアダクト２４の内径は、それぞれ本体１０の外フランジ１１の外径にほぼ一致し、エアダクト２４の幅は、本体１０のエア通路１５の幅に一致している。また、エアダクト２４の外面は、外筒２３の外径より大径の同心円状に形成されている。 The rotating cylinder 20 is provided with an outer cylinder 23 around the rear half of the cylinder member 22. The outer cylinder 23 is connected to the rear end of the cylindrical member 22 via a connection plate 25 provided in the rear end portion, and is concentrically connected to the cylindrical member 22. Further, the outer cylinder 23 projects a part of the outer periphery in the radial direction to form a tunnel-like air duct 24. The air duct 24 corresponds to the opening / closing opening 63 on the outer periphery of the rear portion of the cylindrical member 22, and It is formed in the front-rear direction over the entire length. The rear end of the cylindrical member 22 is connected to the front surface of the connection plate 25 on the side where the opening / closing opening 63 is not formed, and about half the circumference on the side where the opening / closing opening 63 is formed from the front surface of the connection plate 25. They are separated by a gap d and are end surfaces 22b and 22b on both sides of the opening / closing opening 63. The outer diameter of the outer cylinder 23 and the inner diameter of the air duct 24 are substantially equal to the outer diameter of the outer flange 11 of the main body 10, and the width of the air duct 24 is equal to the width of the air passage 15 of the main body 10. Further, the outer surface of the air duct 24 is formed in a concentric shape having a larger diameter than the outer diameter of the outer cylinder 23.

外筒２３の前端面には、本体１０のストッパリブ１１ａ、１１ａに対応するガイド溝２３ｃ、２３ｃが形成されている。ガイド溝２３ｃ、２３ｃは、エアダクト２４の中心から外筒２３の周方向にそれぞれ９０°、１８０°の範囲に互いに逆方向に形成されており、長い方のガイド溝２３ｃの先端付近には、本体１０の係合リブ１１ａ1 に対応する低い内向きの係合リブ２３ｃ1 が形成されている。また、外筒２３の前部内周には、本体１０の係合リブ１２ａに対応する係合リブ２３ａが形成され、接続板２５の直近前方の内周には、小径部２３ｂが形成されている。 Guide grooves 23 c and 23 c corresponding to the stopper ribs 11 a and 11 a of the main body 10 are formed on the front end surface of the outer cylinder 23. The guide grooves 23c and 23c are formed in directions opposite to each other in a range of 90 ° and 180 ° in the circumferential direction of the outer cylinder 23 from the center of the air duct 24, respectively, and near the tip of the longer guide groove 23c Low inward engaging ribs 23c1 corresponding to ten engaging ribs 11a1 are formed. Further, an engagement rib 23 a corresponding to the engagement rib 12 a of the main body 10 is formed on the inner periphery of the front portion of the outer cylinder 23, and a small diameter portion 23 b is formed on the inner periphery immediately in front of the connection plate 25. .

接続板２５の後面側には、キャップ３０の装着部２６が形成されている。装着部２６の輪郭は、筒部材２２の外径よりやや大径の円弧部に対し、外筒２３上のエアダクト２４と同形の枠状部を滑らかに連結して楯状に形成されている。装着部２６の前端面２６ｂは、接続板２５の厚さ方向のほぼ中間に位置しており、前端面２６ｂの全体形状は、エアダクト２４側がエアダクト２４の内部形状に倣っており、エアダクト２４の反対側が筒部材２２の外径より小径で内径より大径の半円弧状であり、両者の中間には、装着部２６内に露出する筒部材２２の端面２２ｂ、２２ｂに向けて前向きの段が形成されている。また、装着部２６は、接続板２５の後方に外筒２３より短く突出し、装着部２６の内面には、全周に亘って内向きの係合リブ２６ａが形成されている。 A mounting portion 26 for the cap 30 is formed on the rear surface side of the connection plate 25. The outline of the mounting portion 26 is formed in a bowl shape by smoothly connecting a frame-shaped portion having the same shape as the air duct 24 on the outer cylinder 23 to an arc portion having a diameter slightly larger than the outer diameter of the cylindrical member 22. The front end surface 26b of the mounting portion 26 is located approximately in the middle of the connecting plate 25 in the thickness direction. The entire shape of the front end surface 26b is similar to the internal shape of the air duct 24 on the air duct 24 side, and is opposite to the air duct 24. The side is a semicircular arc having a diameter smaller than the outer diameter of the cylindrical member 22 and larger than the inner diameter, and a forward step is formed in the middle between the two toward the end faces 22b, 22b of the cylindrical member 22 exposed in the mounting portion 26. Has been. Further, the mounting portion 26 protrudes shorter than the outer cylinder 23 behind the connection plate 25, and an inward engagement rib 26 a is formed on the entire inner surface of the mounting portion 26.

外筒２３、エアダクト２４の横断面形状は、図５（Ａ）、（Ｂ）に示されている。また、装着部２６の全体形状は、図５（Ｃ）のとおりである。ただし、図５（Ａ）〜（Ｃ）は、それぞれ図４（Ａ）のＹ5 −Ｙ5 線、Ｙ6 −Ｙ6 線、Ｙ7 −Ｙ7 線矢視相当断面図である。筒部材２２の外周との間に形成されるエアダクト２４の内部空間は、エアダクト２４の前端から、筒部材２２の開閉開口６３上を通過して装着部２６にまでストレートに貫通している。 The cross-sectional shapes of the outer cylinder 23 and the air duct 24 are shown in FIGS. 5 (A) and 5 (B). The overall shape of the mounting portion 26 is as shown in FIG. 5A to 5C are cross-sectional views corresponding to the Y5-Y5 line, Y6-Y6 line, and Y7-Y7 line of FIG. 4A, respectively. The internal space of the air duct 24 formed between the outer periphery of the cylindrical member 22 passes straight from the front end of the air duct 24 over the opening / closing opening 63 of the cylindrical member 22 to the mounting portion 26.

キャップ３０は、装着部２６と相似形の本体部３１に対し、外筒２３、エアダクト２４に適合するフランジ３２を付設して形成されている（図１）。本体部３１の前面側は、装着部２６の前端面２６ｂの内側の形状に適合する形状で前方に突出しており、本体部３１の全周には、係合リブ３１ａが形成されている。 The cap 30 is formed by attaching a flange 32 that fits the outer cylinder 23 and the air duct 24 to the body portion 31 similar to the mounting portion 26 (FIG. 1). The front surface side of the main body 31 protrudes forward in a shape that matches the inner shape of the front end surface 26 b of the mounting portion 26, and engaging ribs 31 a are formed on the entire periphery of the main body 31.

回転筒２０は、筒部材２２を本体１０の後部の筒１２に差し込むことにより、本体１０の後部に相対回転自在に連結されている（図６）。ただし、このとき、本体１０のストッパリブ１１ａ、１１ａは、回転筒２０の外筒２３の前端のガイド溝２３ｃ、２３ｃに対応させ、ガイド溝２３ｃ、２３ｃに収納するものとする（図７）。なお、図６（Ａ）、（Ｂ）は、それぞれ図２（Ａ）のＺ1 −Ｚ1 線、Ｚ2 −Ｚ2 線矢視相当要部拡大断面図であり、図７（Ａ）、（Ｂ）は、それぞれ図２（Ａ）のＺ3 −Ｚ3 線、図２（Ｂ）のＺ4 −Ｚ4 線矢視相当拡大断面図である。 The rotary cylinder 20 is connected to the rear part of the main body 10 so as to be relatively rotatable by inserting the cylindrical member 22 into the cylinder 12 at the rear part of the main body 10 (FIG. 6). However, at this time, the stopper ribs 11a and 11a of the main body 10 are accommodated in the guide grooves 23c and 23c in correspondence with the guide grooves 23c and 23c at the front end of the outer cylinder 23 of the rotating cylinder 20 (FIG. 7). 6A and 6B are enlarged cross-sectional views corresponding to the Z1-Z1 line and the Z2-Z2 line in FIG. 2A, respectively. FIGS. FIG. 3 is a Z3-Z3 line in FIG. 2 (A) and an enlarged cross-sectional view corresponding to the Z4-Z4 line in FIG. 2 (B), respectively.

回転筒２０を本体１０に連結すると（図６）、回転筒２０は、外筒２３の内面の係合リブ２３ａが本体１０の筒１２上の係合リブ１２ａを乗り越えることにより抜止めされる。また、筒部材２２の前端の前板２１は、本体１０の仕切板１４の後面に到達し、外筒２３の前端は、本体１０の外フランジ１１の後面に近接する。さらに、本体１０の筒１２の後端は、外筒２３の内周の小径部２３ｂに挿入されて外周がシールされ、回転筒２０の開閉開口６３の前端は、シールリブ６３ｂを介して筒１２の内面との間がシールされる。 When the rotary cylinder 20 is connected to the main body 10 (FIG. 6), the rotary cylinder 20 is prevented from being pulled out by the engagement rib 23a on the inner surface of the outer cylinder 23 getting over the engagement rib 12a on the cylinder 12 of the main body 10. The front plate 21 at the front end of the cylindrical member 22 reaches the rear surface of the partition plate 14 of the main body 10, and the front end of the outer cylinder 23 is close to the rear surface of the outer flange 11 of the main body 10. Further, the rear end of the cylinder 12 of the main body 10 is inserted into the small-diameter portion 23b of the inner periphery of the outer cylinder 23 to seal the outer periphery, and the front end of the opening / closing opening 63 of the rotating cylinder 20 is connected to the cylinder 12 via the seal rib 63b. The space between the inner surface is sealed.

本体１０に対する回転筒２０の正逆の相対回転範囲は、ストッパリブ１１ａ、１１ａの一方がガイド溝２３ｃ、２３ｃの一方の先端に当接することにより、９０°に制限されている（図７）。そこで、本体１０のエア通路１５に対して回転筒２０のエアダクト２４が本体１０の周方向に９０°ずれる位置を準備位置（図２（Ａ）、図７（Ａ））とし、両者が一致する位置を使用位置（図２（Ｂ）、図７（Ｂ））とする。なお、準備位置では、一方のガイド溝２３ｃ内の係合リブ２３ｃ1 が一方のストッパリブ１１ａの係合リブ１１ａ1 を乗り越えることにより、回転筒２０を準備位置に軽くロックするとともに、準備位置に正しくセットされたことを示すクリック感を発現させている。ただし、係合リブ２３ｃ1 、１１ａ1 は、それぞれ他方のガイド溝２３ｃ、ストッパリブ１１ａにも設け、使用位置においても、同様に回転筒２０を軽くロックし、クリック感を発現させてもよい。 The forward / reverse relative rotation range of the rotary cylinder 20 with respect to the main body 10 is limited to 90 ° when one of the stopper ribs 11a and 11a abuts on one end of the guide grooves 23c and 23c (FIG. 7). Therefore, a position where the air duct 24 of the rotary cylinder 20 is shifted by 90 ° in the circumferential direction of the main body 10 with respect to the air passage 15 of the main body 10 is set as a preparation position (FIG. 2A, FIG. 7A), and both coincide with each other. The position is a use position (FIG. 2B, FIG. 7B). At the preparation position, the engagement rib 23c1 in one guide groove 23c gets over the engagement rib 11a1 of the one stopper rib 11a, so that the rotary cylinder 20 is lightly locked at the preparation position and set correctly at the preparation position. The click feeling which shows that is expressed. However, the engaging ribs 23c1 and 11a1 may also be provided in the other guide groove 23c and the stopper rib 11a, respectively, so that the rotating cylinder 20 is similarly lightly locked even in the use position so as to express a click feeling.

一方、準備位置において、回転筒２０の前端の開閉孔６４、６４、後部外周の開閉開口６３は、それぞれ本体１０の仕切板１４、筒１２によって閉じられている（図６（Ｂ））。また、前者のエアダクト２４の前端は、後者の外フランジ１１によって閉じられている。そこで、回転筒２０の筒部材２２内には、１回分の投与量相当の粉末製剤Ｐを収納して装着部２６にキャップ３０を装着することにより、粉末製剤Ｐ用の気密の収納部５２を形成することができる。 On the other hand, at the preparation position, the opening / closing holes 64 and 64 at the front end of the rotating cylinder 20 and the opening / closing opening 63 at the rear outer periphery are closed by the partition plate 14 and the cylinder 12 of the main body 10, respectively (FIG. 6B). The front end of the former air duct 24 is closed by the latter outer flange 11. Therefore, the powder member P corresponding to a single dose is stored in the cylindrical member 22 of the rotary cylinder 20, and the cap 30 is mounted on the mounting portion 26, thereby providing an airtight storage portion 52 for the powder formulation P. Can be formed.

なお、キャップ３０は、本体部３１の前面側が装着部２６の前端面２６ｂを越えて筒部材２２の端面２２ｂ、２２ｂに当接するとともに、本体１０の筒１２の後端にも同時に当接して収納部５２を気密にシールする。また、キャップ３０は、本体部３１の係合リブ３１ａが装着部２６の内面の係合リブ２６ａを乗り越えることにより装着部２６に取外し不能に装着され、フランジ３２を介し、エアダクト２４の後端、外筒２３の後端を含む回転筒２０の後部を全部閉じることができる。ただし、キャップ３０は、たとえば超音波接着などにより装着部２６にシール装着してもよい。 The cap 30 has the front side of the main body 31 beyond the front end surface 26 b of the mounting portion 26 and abuts against the end surfaces 22 b and 22 b of the cylindrical member 22 and simultaneously abuts against the rear end of the cylinder 12 of the main body 10. The part 52 is hermetically sealed. Further, the cap 30 is detachably mounted on the mounting portion 26 by the engagement rib 31a of the main body portion 31 getting over the engagement rib 26a on the inner surface of the mounting portion 26, and the rear end of the air duct 24 via the flange 32, All the rear portions of the rotating cylinder 20 including the rear end of the outer cylinder 23 can be closed. However, the cap 30 may be seal-mounted on the mounting portion 26 by, for example, ultrasonic bonding.

粉末製剤Ｐを吸引するときは、本体１０の外面のローレット１６ａ、１６ａ…の部分を指で摘んで、回転筒２０を前方側から見て反時計方向に９０°回転させ（図２（Ａ）の矢印Ｋ1 方向）、回転筒２０を使用位置にセットする（図２（Ｂ）、図７（Ｂ））。なお、使用位置では、エアダクト２４が本体１０のエア通路１５、ガイドリブ１２ｂ、１２ｂの位置に移動し、エアダクト２４の前端が開放されるので、セット動作を誤るおそれがない。 When sucking the powder preparation P, the knurls 16a, 16a... On the outer surface of the main body 10 are picked with fingers, and the rotary cylinder 20 is rotated 90 ° counterclockwise when viewed from the front side (FIG. 2A). (In the direction of arrow K1), the rotating cylinder 20 is set at the use position (FIG. 2B, FIG. 7B). In the use position, the air duct 24 moves to the positions of the air passage 15 and the guide ribs 12b and 12b of the main body 10 and the front end of the air duct 24 is opened, so that there is no possibility of erroneous setting operation.

一方、このようにしてエアダクト２４の前端が開くと（図８）、同時に、回転筒２０の開閉開口６３が本体１０のエア開口６２と合致して収納部５２がエアダクト２４を介して外部と連通し、筒部材２２の前端の開閉孔６４、６４が仕切板１４上のエア孔６５、６５と合致して収納部５２が本体１０の前部の吸引部５１に連通する。すなわち、吸入器の内部には、エアダクト２４から、収納部５２を介して吸引部５１にまで連通するエアの流路が形成される（図２（Ｂ）、図８）。また、このとき、エアダクト２４によりエア開口６２、開閉開口６３の上方が覆われているため、エア開口６２、開閉開口６３を誤って下向きにしても、収納部５２内の粉末製剤Ｐが外部にまでこぼれてしまうことがない。 On the other hand, when the front end of the air duct 24 is opened in this way (FIG. 8), at the same time, the opening / closing opening 63 of the rotary cylinder 20 matches the air opening 62 of the main body 10 so that the storage portion 52 communicates with the outside through the air duct 24. Then, the opening / closing holes 64, 64 at the front end of the cylindrical member 22 match the air holes 65, 65 on the partition plate 14, and the storage portion 52 communicates with the suction portion 51 at the front portion of the main body 10. That is, an air flow path that communicates from the air duct 24 to the suction portion 51 through the storage portion 52 is formed inside the inhaler (FIGS. 2B and 8). At this time, since the air duct 24 covers the air opening 62 and the opening / closing opening 63, even if the air opening 62 and the opening / closing opening 63 are accidentally turned downward, the powder formulation P in the storage portion 52 is exposed to the outside. There is no spillage.

そこで、使用位置の吸入器の吸引部５１を口にくわえて息を吸い込むと、収納部５２内の粉末製剤Ｐの全量を一気に吸引して肺などに投与することができる。吸引用のエアは、本体１０の外周のガイドリブ１２ｂ、１２ｂに案内され、エア通路１５に沿ってエアダクト２４に流入してキャップ３０に突き当たることにより、エア開口６２、開閉開口６３を経て収納部５２の後端部に流れ込み、収納部５２内の粉末製剤Ｐとともに、開閉孔６４、６４、エア孔６５、６５を通り、吸引部５１を経て口内に吸引されるからである（図８の矢印方向）。 Therefore, when the suction part 51 of the inhaler at the use position is put into the mouth and a breath is inhaled, the entire amount of the powder preparation P in the storage part 52 can be sucked at once and administered to the lungs. The suction air is guided by the guide ribs 12b, 12b on the outer periphery of the main body 10, flows into the air duct 24 along the air passage 15 and abuts against the cap 30, whereby the storage portion 52 passes through the air opening 62 and the opening / closing opening 63. This is because it flows into the rear end portion, passes through the opening / closing holes 64 and 64, and the air holes 65 and 65 together with the powder preparation P in the storage portion 52, and is sucked into the mouth through the suction portion 51 (in the direction of the arrow in FIG. 8). ).

なお、開閉開口６３の前端の斜面６３ａは、エアダクト２４から収納部５２に流入するエアの流れを滑らかにする。また、筒部材２２の斜面２２ａ、２２ａは、筒部材２２の前端部におけるエアの流速を高めることにより、前板２１上のエア整流用の後向きの凸部２１ａ、仕切板１４上のエア整流用の前向きの凸部１４ａがエアの流れを整えてうずの発生を少なくすることと相俟って、粉末製剤Ｐが吸入器の内部に残留することなく、全量を円滑に吸引させることに貢献する。ただし、エアダクト２４の断面積、使用位置におけるエア開口６２、開閉開口６３の開口面積は、それぞれ吸気抵抗を決定する使用位置の開閉孔６４、６４、エア孔６５、６５の開口面積より大きいものとする。 The inclined surface 63a at the front end of the opening / closing opening 63 smoothes the flow of air flowing from the air duct 24 into the storage portion 52. In addition, the inclined surfaces 22a and 22a of the cylindrical member 22 increase the air flow rate at the front end of the cylindrical member 22, thereby causing the rearward convex portion 21a for air rectification on the front plate 21 and for air rectification on the partition plate 14. The forward-convex convex portion 14a, combined with reducing the generation of vortex by adjusting the air flow, contributes to the smooth suction of the entire amount of the powder preparation P without remaining in the inhaler. . However, the sectional area of the air duct 24, the opening area of the air opening 62 and the opening / closing opening 63 at the use position are larger than the opening areas of the opening / closing holes 64 and 64 and the air holes 65 and 65 at the use position that determine the intake resistance, respectively. To do.

以上の説明において、回転筒２０を準備位置、使用位置にセットするためのストッパリブ１１ａ、１１ａ、ガイド溝２３ｃ、２３ｃは、本体１０に対して回転筒２０を所定の角度範囲だけ正逆に回転させることができればよく、図３（Ｂ）、図４（Ｄ）の形態以外に設定することも可能である。また、準備位置、使用位置にセットするとき、回転筒２０を９０°以外の角度範囲に回転させるようにしてもよい。さらに、ストッパリブ１１ａ、ガイド溝２３ｃは、それぞれ回転筒２０側、本体１０側に設けてもよい。 In the above description, the stopper ribs 11a and 11a and the guide grooves 23c and 23c for setting the rotary cylinder 20 to the preparation position and the use position rotate the rotary cylinder 20 forward and backward with respect to the main body 10 by a predetermined angle range. It is only necessary to be able to do this, and it is possible to set other than the forms shown in FIGS. 3B and 4D. Moreover, when setting to a preparation position and a use position, you may make it rotate the rotary cylinder 20 to angle ranges other than 90 degrees. Further, the stopper rib 11a and the guide groove 23c may be provided on the rotating cylinder 20 side and the main body 10 side, respectively.

なお、エア開口６２、開閉開口６３は、必ずしも同形同大に形成する必要がない。各エア孔６５、開閉孔６４についても同様である。また、エア開口６２の幅は、エア通路１５の幅、エアダクト２４の幅と揃えて形成してもよい。 Note that the air opening 62 and the opening / closing opening 63 do not necessarily have the same shape and size. The same applies to the air holes 65 and the opening / closing holes 64. Further, the width of the air opening 62 may be formed to be equal to the width of the air passage 15 and the width of the air duct 24.

一方、開閉孔６４、６４、エア孔６５、６５は、それぞれ２個とするに代えて、１個としてもよい。また、本体１０に対する回転筒２０の抜止めは、本体１０の係合リブ１２ａと回転筒２０の外筒２３の係合リブ２３ａで行うに代えて、本体１０の筒１２の内側と筒部材２２の外側に係合リブを設けることもできる。さらに、本体１０の外フランジ１１を分断するエア通路１５を設ける代わりに、外フランジ１１に通気孔を設けることもできる。 On the other hand, the number of the opening / closing holes 64 and 64 and the air holes 65 and 65 may be one instead of two. Further, the retaining of the rotating cylinder 20 with respect to the main body 10 is not performed by the engaging ribs 12 a of the main body 10 and the engaging ribs 23 a of the outer cylinder 23 of the rotating cylinder 20, but the inner side of the cylinder 12 and the cylindrical member 22 of the main body 10. An engaging rib can also be provided on the outer side. Furthermore, instead of providing the air passage 15 that divides the outer flange 11 of the main body 10, a vent hole can be provided in the outer flange 11.

この発明は、粉末製剤Ｐの１回分の投与量を吸引して肺などに投与する使い捨ての用途に対して広く好適に適用することができる。 The present invention can be widely and suitably applied to disposable uses in which a single dose of the powder preparation P is aspirated and administered to the lung or the like.

Ｐ…粉末製剤
１０…本体
１１…外フランジ
１４…仕切板
１４ａ…凸部
２０…回転筒
２１…前板
２１ａ…凸部
２２…筒部材
２２ａ…斜面
２３…外筒
２４…エアダクト
２５…接続板
３０…キャップ
５１…吸引部
５２…収納部
６２…エア開口
６３…開閉開口
６４…開閉孔
６５…エア孔 P ... Powder preparation 10 ... Main body 11 ... Outer flange 14 ... Partition plate 14a ... Convex part 20 ... Rotating cylinder 21 ... Front plate 21a ... Convex part 22 ... Cylindrical member 22a ... Slope 23 ... Outer cylinder 24 ... Air duct 25 ... Connection plate 30 ... Cap 51 ... Suction part 52 ... Storage part 62 ... Air opening 63 ... Opening / closing opening 64 ... Opening / closing hole 65 ... Air hole

Claims

A hollow main body with long ends open at the front and rear, a rotating cylinder connected to the rear part of the main body so as to be relatively rotatable, and a cap attached to the rear part of the rotating cylinder, the main body having a partition with an air hole A plate is provided in the middle part, a suction part is formed in the front part of the partition plate, an air opening is provided in the outer periphery of the rear part, and the rotating cylinder is provided in the cylindrical member inserted into the rear part of the main body and the front end of the cylindrical member A front plate having an opening / closing hole, an opening / closing opening formed on a rear outer periphery of the cylindrical member, and an outer cylinder provided around the cylindrical member, the outer cylinder being connected to the rear of the cylindrical member via a connection plate An air duct that connects to the end and projects a part of the outer periphery in the radial direction is formed in the front-rear direction corresponding to the opening and closing opening, and the rotating cylinder is rotated in the forward and reverse directions to be set at the preparation position and the use position. It is possible, and in the preparation position, the inside of the cylindrical member is airtight powder. In the use position, the opening / closing opening matches the air opening and the storage part communicates with the outside, and the opening / closing hole matches the air hole and the storage part communicates with the suction part. An inhaler for a powder formulation.

The body, the inhaler for powdered preparation according to claim 1, wherein the provision of the outer flange for opening and closing the front end of the air duct.

A hollow main body with long ends open at the front and rear, a rotating cylinder connected to the rear part of the main body so as to be relatively rotatable, and a cap attached to the rear part of the rotating cylinder, the main body having a partition with an air hole A plate is provided in the middle part, a suction part is formed in the front part of the partition plate, an air opening is provided in the outer periphery of the rear part, and the rotating cylinder is provided in the cylindrical member inserted into the rear part of the main body and the front end of the cylindrical member A front plate having an opening / closing hole; and an opening / closing opening formed at a rear outer periphery of the cylindrical member, wherein the cylindrical member forms a slope that narrows a cross-sectional area of a front end portion, and the front plate is used for air rectification. A rearward convex part is provided , and the rotating cylinder can be set to a preparation position and a use position by rotating in the forward and reverse directions, and in the preparation position, the inside of the cylinder member serves as an airtight powder preparation storage part. In the position, the opening and closing opening coincides with the air opening so that the storage portion is Parts and communicating, inhalers for powder powder formulation you wherein Rukoto said housing portion through communication with the suction portion and the opening and closing holes in line with the said air hole.

A hollow main body with long ends open at the front and rear, a rotating cylinder connected to the rear part of the main body so as to be relatively rotatable, and a cap attached to the rear part of the rotating cylinder, the main body having a partition with an air hole A plate is provided in the middle part, a suction part is formed in the front part of the partition plate, an air opening is provided in the outer periphery of the rear part, and the rotating cylinder is provided in the cylindrical member inserted into the rear part of the main body and the front end of the cylindrical member It has a front plate with an opening and closing hole, and an opening and closing opening formed on the outer periphery of the rear portion of the cylindrical member, the partition plate is provided with a forward convex portion for air rectification, and the rotating cylinder is rotated forward and backward. In the preparation position, the inside of the cylindrical member serves as an airtight powder preparation storage portion, and in the use position, the opening / closing opening coincides with the air opening and the storage portion. Communicates with the outside, and the opening / closing hole is aligned with the air hole. Containing portion through communication with the suction portion inhaler for powdered powder formulation you characterized Rukoto.