Inhaler
AssigneeBoehringer Ingelheim International GmbH
InventorTimo Von Brunn
Life of this patent
Estimating the term…
Abstract
An inhaler for delivery of a powder-form inhalation formulation from a blister strip with a plurality of blister pockets. The used part of the blister strip with empty blister pockets is wound onto a drum which is driven via a gear mechanism which is coupled to the drum via a spring. The spring allows for the different peripheral speeds of the wound-up part to be compensated.
Claims21
Inhaler for delivery of an inhalation formulation from a band-shaped blister strip with a plurality of blister pockets each of which contains one dose of the inhalation formulation, comprising:
- a piercing element to puncture a lid of the respective blister pocket,
- a conveyor for stepwise onward movement of the blister strip, and
- a receiving apparatus for receiving an emptied blister strip,
- wherein the receiving apparatus comprises a drum onto which the emptied blister strip is windable,
- wherein a transmission is provided for driving the drum,
- wherein the transmission has a compensation element which has a variable transmission ratio, and
- wherein a manually swivellable actuator is provided that actuates both the piercing element and the receiving apparatus.
Inhaler for delivery of an inhalation formulation from a band shaped blister strip with a plurality of blister pockets each of which contains one dose of the inhalation formulation, comprising:
- a conveyor for stepwise onward movement of the blister strip, and
- a receiving apparatus for receiving an emptied part of the blister strip,
- wherein the receiving apparatus comprises a drum onto which the emptied part of the blister strip is windable,
- wherein a transmission is provided for driving the drum,
- wherein the transmission has a compensation element which has a variable transmission ratio for ensuring that an unused part of the blister strip is kept taut despite a varying diameter of the emptied part of the blister strip,
- wherein the compensation element is a spring,
- wherein the spring is adapted for being released during a first part of a winding-up of the emptied part of the blister strip, and
- wherein the spring is adapted for being increasingly tensioned during a second part of the winding-up of the emptied part of the blister strip.
Inhaler for delivery of an inhalation formulation from a band shaped blister strip with a plurality of blister pockets each of which contains one dose of the inhalation formulation, comprising:
- a conveyor for stepwise onward movement of the blister strip, and
- a receiving apparatus for receiving an emptied blister strip,
- wherein the receiving apparatus comprises a drum onto which the emptied blister strip is windable,
- wherein a transmission is provided for driving the drum,
- wherein the transmission has a compensation element which has a variable transmission ratio,
- wherein the unused blister strip and the receiving apparatus for winding-up the used blister strip use a common housing space, and
- wherein a distance between a virtual axis of the unused blister strip and a winding axis of the receiving apparatus is smaller than a sum of a maximum winding radius of the unused blister strip and a maximum winding radius of the used blister strip.
Dependencies are inferred from the claim text.