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Improvements in or relating to dry powder inhalers

A technology for dry powder inhalers and appliances, which is applied in the improvement of dry powder inhalers or in the field of dry powder inhalers, which can solve problems such as adverse treatment consequences, and achieve the effects of performance improvement and improved sealing

Active Publication Date: 2012-05-23
TIANJIN KINNOVATA PHARMA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In devices of the type described above, it is important that degradation of the medicament due to moisture, and / or misoperation of the dosing mechanism, and / or accumulation of medicament powder, all of which (as known) have adverse effects on the patient. treatment consequences, the seal between the metering members and their respective support structures should be as tight as possible so as to minimize the possibility of moisture being drawn into the medicament reservoir

Method used

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  • Improvements in or relating to dry powder inhalers
  • Improvements in or relating to dry powder inhalers
  • Improvements in or relating to dry powder inhalers

Examples

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Embodiment Construction

[0024] refer to figure 1 , a dry powder inhaler generally indicated by reference numeral 1 and used for the simultaneous injection of two different powdered dosage unit doses.

[0025] The inhaler 1 comprises first and second reservoirs 2, 2a containing volumes of two medicaments and arranged side by side, substantially vertically in normal use of the inhaler 1 .

[0026] The reservoir 2 has an opening 4 in its bottom, through which powdered medicament is dispensed from the reservoir 2 under the force of gravity. A frusto-conical metering member 5 is located below the reservoir 2 such that the surface of the metering member 5 abuts tightly against the underside of the reservoir 2 , sealing the opening 4 . The reservoir 2 is integrally formed with a frusto-conical support 6 in which the metering member 5 is received. The metering member 5 has a plurality of depressions 7 formed in its surface. figure 1 Two such depressions 7 are clearly visible in the figure. The recess 7 s...

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PUM

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Abstract

A dry powder inhaler (1) is disclosed comprising first and second medicament reservoirs (2, 2a) and respective rotatable first and second metering members (5, 5a), which are urged into sealing engagement with the respective medicament reservoir (2, 2a) by a compression spring (8) located between the metering members(5, 5a). The inhaler (1) includes an actuator by which the first and second metering members (5, 5a) are rotated in unison from a metering position to a dispensing position. The actuator acts upon the first and second metering members (5, 5a) via a wheel (9) mounted between the first and second metering members(5, 5a). The first and second metering members (5, 5a) are provided with sockets (51) that receive the respective ends of the compression spring (8). The sockets (51) have extensions (52) that project into an axial bushing (92) of the wheel (9), the bushing (92) being provided on its internal surface with formations (94a, 94b, 94c, 94d) that engage the extensions (52) to cause the metering members (5,5a) to rotate when the wheel (9) is rotated.

Description

technical field [0001] The present invention relates to improvements in or to dry powder inhalers, in particular dry powder inhalers of the type comprising a first medicament reservoir and a second medicament reservoir, the first medicament reservoir and The second medicament reservoir holds a quantity of two different medicaments, and the first and second medicament reservoirs have associated therewith corresponding rotatable first and second metering members, the two doses of medicament The first metering member and the second metering member are dispensed simultaneously for simultaneous inhalation by the patient. Background technique [0002] Dry powder inhalers of the type to which the present invention relates are disclosed in International Patent Applications WO-A-01 / 39823, WO-A-2005 / 102429 and WO-A-2005 / 102430. In the inhalers disclosed in these documents, each medicament reservoir is associated with a rotatable metering member, typically in the form of a frusto-cone...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M15/00
CPCA61M2015/0003A61M2202/064A61M15/0065A61M15/0003
Inventor P·C·帕克斯S·G·威廉斯
Owner TIANJIN KINNOVATA PHARMA CO LTD
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