Powder medicine multiple dose administration device
AssigneeTeijin Limited
InventorsHideo Matsugi, Masahiko Dohi, Yasuhide Uejima, Yuji Makino
Life of this patent
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Abstract
A powdered medicine multi-dose administering device in which a hole (5c) is formed in the bottom surface of a medicine storage chamber (5a) capable of storing a powdered medicine of an amount of many times of administering operation, the hole (5c) being located at a position where a pump unit can be communicated with the exterior via a pipe (2g, 2d). At the administering position, the powdered medicine in a medicine container unit (5b) is injected out of the device together with the air through the pipe, while the hole is kept away from being brought into contact with opening means (2f).
Claims27
A powdered medicine multi-dose administering device comprising:
- means for defining a medicine storage chamber (5a) capable of storing a multi-dose amount of powdered medicine;
- a medicine container unit (5b) provided under the bottom surface of said medicine storage chamber (5a) and is capable of containing a single-dose amount of powdered medicine;
- a medicine guiding unit (2) capable of moving between a filling position and an administering position while remaining in contact with the bottom surface of said medicine storage chamber (5a), and, when moved to the filling position, causes said medicine container unit (5b) to be opened to said medicine storage chamber (5a) through opening means (2f) and, when moved to the administering position, causes said medicine container unit (5b) to be closed with respect to said medicine storage chamber (5a) and causes said medicine container unit (5b) to be communicated with the exterior of the device through a pipe (2g, 2d);
- means (13) communicated with a hole (5c) formed in the bottom surface of said medicine storage chamber (5a) and moves said medicine guiding unit (2) between the filling position and the administering position;
- and
- a pump unit (3) capable of blowing the air into said medicine container unit (5b) through a filter (6a) provided in the bottom of said medicine container unit (5b);
- wherein
- said medicine guiding unit (2), at the filling position, enables said medicine container unit (5b) to be filled with the powdered medicine from said medicine storage chamber (5a) through said opening means and, at this moment, said hole (5c) is located at a position where said pump unit (3) is communicated with the exterior through said pipe (2g, 2d);
- and
- said medicine guiding unit (2), at the administering position, permits the powdery medicine in said medicine container unit (5b) to be injected out of the device together with the air through said pipe (2g, 2d) while closing said hole (5c) without joining it to said opening means (2f).
A powdered medicine multi-dose administering method, wherein a medicine container unit (5b) capable of containing a powdered medicine of a unit-dose amount is provided under the bottom surface of a medicine storage chamber (5a) capable of storing the powdered medicine of an amount of many times of administering operation, a medicine guiding unit (2) is provided to move between a filling position and an administering position while maintaining a contact with the bottom surface of said medicine storage chamber (5a) so that, when moved to the filling position, said medicine container unit (5b) is opened to said medicine storage chamber (5a) through opening means (2f) and, when moved to the administering position, said medicine container chamber (5b) is closed with respect to said medicine storage chamber (5a) and is communicated with the exterior of the device through a pipe (2g, 2d), and a hole (5c) is formed in the bottom surface of said medicine storage chamber (5a);
- said medicine guiding unit (2) is moved between the filling position and the administering position, so that:
- at the filling position, said medicine container unit (5b) is filled with the powdered medicine from said medicine storage chamber (5a) through said opening means and, at the same time, said hole (2c) is pneumatically connected to the pump unit (3) through said pipe (2g, 2d);
- the powdered medicine in said medicine container unit (5b) is swept and metered into an amount of one time of administering operation as said medicine guiding unit moves from the filling position to the administering position;
- and
- at the administering position, the pump (3) is operated to blow the air into said medicine container unit (5b) through the filter (6) to inject the powdered medicine out of the device through said pipe (2g, 2d, 2c).
Dependencies are inferred from the claim text.