Medicament respiratory delivery device
First Claim
1. A method for delivering a medicament to the respiratory system of a user, comprising:
- providing a medicament respiratory delivery device having a chamber with a dry powder medicament contained therein and a pierceable closure sealing the chamber, a compressible pressure actuator in fluid communication with the chamber and having a liquid contained in the pressure actuator, and a piercing element having a pointed end movable relative to said chamber to pierce said pierceable closure, wherein said pressure actuator is a flexible collapsible element and at least a portion of said piercing element is located within said flexible collapsible element;
compressing the pressure actuator;
piercing the pierceable closure;
reconstituting the dry powder medicament with the liquid; and
expelling the reconstituted medicament from the medicament respiratory delivery device.
1 Assignment
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Accused Products
Abstract
A medicament respiratory delivery device including a housing formed of opposed thermoformed polymeric sheets bonded together having formed therebetween a chamber having a medicament cartridge encapsulated between the sheets, an inlet aligned with a passage through the cartridge having a pierceable closure and an outlet aligned with the passage outlet having a burstable membrane. The device includes a pressure actuator formed as a blister between the sheets and a piercing element having a bow-shaped actuator portion and a shaft which pierces the pierceable closure upon actuation of the pressure actuator, delivering fluid under pressure to the cartridge passage, rupturing the membrane and expressing the medicament.
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Citations
18 Claims
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1. A method for delivering a medicament to the respiratory system of a user, comprising:
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providing a medicament respiratory delivery device having a chamber with a dry powder medicament contained therein and a pierceable closure sealing the chamber, a compressible pressure actuator in fluid communication with the chamber and having a liquid contained in the pressure actuator, and a piercing element having a pointed end movable relative to said chamber to pierce said pierceable closure, wherein said pressure actuator is a flexible collapsible element and at least a portion of said piercing element is located within said flexible collapsible element; compressing the pressure actuator; piercing the pierceable closure; reconstituting the dry powder medicament with the liquid; and expelling the reconstituted medicament from the medicament respiratory delivery device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 15, 16, 17, 18)
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- 13. The method of claim wherein said medicament deliver device further comprises a cartridge, wherein a body of said cartridge is generally cylindrical and said chamber is formed between a pair of sheets, thus forming said piercable closure at either end of said body of said cartridge.
Specification