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Assignees
Member
Kindeva Drug DeliveryKindeva Drug Delivery is a contract development and manufacturing organization specializing in advanced drug delivery systems including pulmonary, nasal, injectable, transdermal, and intradermal therapies. Services range from formulation and analytical development to commercial-scale, Annex 1-compliant GMP manufacturing across global facilities. The company brings integrated expertise in regulatory strategy, device engineering, process and technology transfer, and quality assurance, with a focus on sustainable solutions such as low-GWP propellants and microneedle patch platforms. Kindeva supports complex, patient-centric, and environmentally optimized therapies from product conception through commercialization.
Kindeva Drug Delivery is a contract development and manufacturing organization specializing in advanced drug delivery systems including pulmonary, nasal, injectable, transdermal, and intradermal therapies. Services range from formulation and analytical development to commercial-scale, Annex 1-compliant GMP manufacturing across global facilities. The company brings integrated expertise in regulatory strategy, device engineering, process and technology transfer, and quality assurance, with a focus on sustainable solutions such as low-GWP propellants and microneedle patch platforms. Kindeva supports complex, patient-centric, and environmentally optimized therapies from product conception through commercialization.
Publication Number
US-10806872-B2
Publication Date
2020-10-20
Expiration Date
Abstract
The present disclosure relates to a dose indicator comprising, a chassis comprising a chassis frame and a displacement portion comprising a drive part to engage an indexable first display unit indexable about a first display axis, the indexable first display unit comprising a drive tooth to drive an indexable second display unit indexable about a second display axis, the second display axis being non-coaxial with the first display axis, the indexable second display unit comprising two or more second display unit indexing teeth, wherein the drive tooth and each of the second display unit indexing teeth comprise lips on their respective engagement surfaces, the drive tooth lip and second display unit indexing tooth lip each being adapted to engage at an engagement angle that produces a resultant force acting to pull the first display unit and second display unit together. The present disclosure further relates to an actuator for an inhaler, wherein the actuator comprises a dose indicator as described above. The present disclosure is also directed to an inhaler comprising such actuator.
Core Innovation
A dose indicator comprises a chassis with a chassis frame and a displacement portion. The displacement portion includes a drive part that engages an indexable first display unit indexable about a first display axis, and the indexable first display unit includes a drive tooth that drives an indexable second display unit indexable about a second display axis, where the second display axis is non-coaxial with the first display axis.
The drive tooth and each of the second display unit indexing teeth include lips on their respective engagement surfaces. The drive tooth lip has a surface facing radially inward that engages a second display unit indexing tooth at an engagement angle such that rotation against each other produces a resultant force acting to pull the first display unit and second display unit together for reliable indexing.
In described embodiments for a pressurised metered dose inhaler (pMDI), the dose indicator is implemented with an actuator and an inhaler. Mechanical refinements are disclosed to motivate reduced parts and cost and improved robustness, including a displacement arrangement and an integrally moulded chassis.
Claims Coverage
The only independent claim explicitly provided is independent claim clm-00001. Its coverage includes one core inventive concept: a non-coaxial, lip-on-lip engagement between a drive tooth of a first indexable display unit and indexing teeth of a second indexable display unit, where an engagement angle produces a resultant force that pulls the display units together for reliable indexing.
Non-coaxial display unit indexing with lip-on-lip engagement
A chassis with a displacement portion drives an indexable first display unit about a first display axis, and a drive tooth drives an indexable second display unit about a second display axis that is non-coaxial with the first display axis, wherein the drive tooth and each of the second display unit indexing teeth comprise lips on their respective engagement surfaces, and rotation against each other produces a resultant force acting to pull the first display unit and second display unit together.
Based on the provided independent claim, the claim coverage centers on using lips on engagement surfaces and an engagement angle to create a resultant force that pulls first and second non-coaxial display units together for reliable indexing.
Stated Advantages
Improved robustness.
Reduced parts and cost.
Reliable indexing of the first display unit and second display unit through resultant-force lip engagement.
Documented Applications
Used as an actuator for a pressurised metered dose inhaler (pMDI).
An inhaler includes the dose-indicator-based actuator as specified in a dependent claim.
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