Particle cassettes and processes therefor
AssigneePowder Pharmaceuticals Incorporated
InventorsNigel Robert Bates, Philip Thomas Price
Life of this patent
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Abstract
An article for use in manufacturing particle cassettes comprising one or more single pieces of membrane having a plurality of gas flow passages bonded thereto. The article allows convenient manufacture of particle cassettes. Two such articles may be employed to provide a finished particle cassette and a production line in which a plurality of gas flow passages are conveyed on a single membrane is disclosed.
Claims12
An article for use in manufacturing particle cassettes for use in a needleless syringe device, the article comprising:
- a single piece of first membrane film capable of being ruptured by gas under pressure;
- and
- a plurality of first gas flow passages laterally offset from one another, wherein each first gas flow passage forms at least a part of a separate particle confinement chamber;
- wherein each of the first gas flow passages has a first end that is closed by the single piece of first membrane film;
- and
- wherein a first gas flow passage has a second end configured to be coupled to a second gas flow passage to create a particle cassette, the second gas flow passage having a second membrane film attached thereto.
The article of claim wherein each first gas flow passage is closed by a second membrane film to create a chamber for the confinement of particles between the first membrane film and the second membrane film.
A method of making an article for use in manufacturing particle cassettes for use in a needleless syringe device, the method comprising:
- attaching a single piece of first membrane film to a plurality of laterally offset first gas flow passages such that a first end of each of the first gas flow passages is closed by the single piece of membrane film wherein each first gas flow passage forms at least a part of a separate particle confinement chamber, and wherein a first gas flow passage has a second end configured to be coupled to a second gas flow passage to create a particle cassette, the second as flow passage having a second membrane film attached thereto.
Dependencies are inferred from the claim text.