Powder inhaler devices

摘要

An improved inhalation device is provided for facilitating inhalation by a patient of powder medicaments contained in a receptacle. The inhalation device includes a staple assembly comprising a plunger and staple that are securely and robustly coupled to one another. Embodiments of the inhalation device have a cap that prevents or reduces the amount of dust and grime entering into the device. The cap is additionally configured to prevent or reduce inadvertent and unintentional operation of the device. The body portion and first casing portion of certain embodiments of the inhalation device are sealably coupled, restricting or reducing undesirable flow pathways that have an adverse effect on the operation of the device.

主权项

1. An inhalation device for administering a dose of powder contained in a receptacle, said device comprising:
a first casing portion; a second casing portion movably coupled to said first casing portion, said second casing portion including a body portion and a mouthpiece portion, the body portion including a chamber configured to hold the receptacle; an insert element receivably coupled to one of said first casing portion and the body portion, wherein said insert element is ultrasonically welded to only one of said first casing portion and said body portion, and said insert element forming a closed curve substantially normal to an axis of substantial symmetry of at least one of said first casing portion and the body portion; a plunger movably coupled to said first casing portion and said second casing portion, and; a U-shaped staple swagingly coupled to a substantially flat surface of a distal end of said plunger with two projecting portions and adjacent to a retaining projecting portion not swaged,wherein said insert element is sealably coupled to both said first casing portion and the body portion in a rest position of said inhalation device.