Surgery – Respiratory method or device – Means for mixing treating agent with respiratory gas
Patent
1997-03-24
1999-03-23
Asher, Kimberly L.
Surgery
Respiratory method or device
Means for mixing treating agent with respiratory gas
604 58, 222189, A61M 1500, A61M 1600, B05D 714, B65D 8306
Patent
active
058846212
DESCRIPTION:
BRIEF SUMMARY
This application is a 371 of PCT/JP96/02097 filed Jul. 25, 1996.
TECHNICAL FIELD
The present invention relates to a device for administering a powdery medicine. More specifically, the invention relates to a device for administering a powdery medicine which is convenient to carry, easy to use, disposable after the use and is sanitary, rigid in construction, and is relatively cheaply available, the device holding in a container a trace amount of a powdery medicine for one-time administration into body cavities or to another diseased part by spray- or suction-administration.
BACKGROUND ART
Patients suffering from nasal allergy, asthma, flat lichen, wide inflammatory stomatitis and the like diseases are treated by administering powdery medicines into the nasal cavities or the oral cavity. The medicines are administered by using powdery medicine dispensers or containers. Such dispensers can roughly be divided into two types depending upon their manner of containing the powdery medicines.
The device of the first type may be a unit dosage dispenser or container in which a powdery medicine of an amount (unit dosage) that will be administered each time is contained in a suitable container as a unit, and is administered in an amount of a unit dosage for every administering operation. The device of the second type may be a multi-dosage dispenser or container in which a powdery medicine of an amount (multiple dosages) that will be administered a plural number of times is contained in a suitable container, and the powdery medicine of a unit dosage is correctly taken out from the container and is administered for every administration operation. Examples of the former unit dosage dispenser further include a simple device or a disposable container which also works as a disposable device that can be disposed of after each administration operation.
Unit dosage dispenser containers have been disclosed in Japanese Unexamined Patent Publication (Kokai) No. 59-34267 and Japanese Patent Publication (Kokoku) No. 63-6024. These devices are usually equipped with a unit dosage container-holding portion held in a capsule or the like, means for perforating the unit dosage container, and means for introducing the air stream to spray the powdery medicine from the perforated container into the nasal cavities or the like cavities of a patient. A disposable container has further been disclosed in Japanese Unexamined Patent Publication (Kohyo) No. 2-500172, according to which the powdery medicine dispenser container comprises a medicine-holding portion in which a fine powdery medicine is contained and of which the head portion has an opening for spraying or sucking the powdery medicine, and means for introducing the air, the bottom of the medicine-holding portion being communicated with the means for introducing the air through an air-permeable membrane but which does not permit the powdery medicine to pass through.
A multi-dosage dispenser container has been disclosed in, for example, WO94/26338.
According to this specification, the device comprises a device body, a storage chamber detachably mounted on said body and capable of storing a powdery medicine in an amount (multiple dosages) for plural times of administrations, medicine distribution means having a container chamber of a capacity (unit dosage) for each administration operation and is movably mounted on said body, so that said container chamber at a charging position is communicated with said storage chamber to administer the powdery medicine in the container chamber, means for moving said distribution means between the charging position and the administering position, and pump means for stirring the powdery medicine in the storage chamber by injecting the air into the storage chamber through the container chamber at the charging position, wherein the powdery medicine of a predetermined amount after stirring is charged into said container chamber from said storage chamber relying upon the suction force by said pump means and/or gravity.
As described above, many dispenser dev
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International Search Report
Fujii Takao
Kawabe Hiroyuki
Makino Yuji
Matsugi Hideo
Suzuki Yoshiki
Asher Kimberly L.
Teijin Limited
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