Drug particle delivery
First Claim
1. A needleless particle delivery device for firing particles at a target surface using a sudden gas flow, characterised in that said device comprises a container of compressed gas and a mechanism for releasing gas from the container to create a gas flow through the device, the mechanism comprising an element for breaching the container and a manually manipulable actuator for moving the element and the container relative to one another to provide an initial breach whereby gas is released to help provide a servo action sufficient to suddenly move the element and container farther relative to one another, thereby finishing the breach of the container to establish a maximum gas flow therefrom.
1 Assignment
0 Petitions
Accused Products
Abstract
A needleless drug particle delivery device, of the kind in which firing of the drug particles is caused by a sudden gas flow, characterised in that the device comprises a container (14) of compressed gas and a mechanism for releasing the gas from the container to create the gas flow, the mechanism comprising a rupture (20) element for breaching the container and a manually manipulable actuator (27) for moving the element and the container relatively to one another to provide an initial breach whereby gas is released to act on a piston portion (21) to provide a servo action which causes the rupture element and container to move further suddenly relatively to one another to complete the breaching of the container and establish a maximum gas flow from the container.
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Citations
14 Claims
- 1. A needleless particle delivery device for firing particles at a target surface using a sudden gas flow, characterised in that said device comprises a container of compressed gas and a mechanism for releasing gas from the container to create a gas flow through the device, the mechanism comprising an element for breaching the container and a manually manipulable actuator for moving the element and the container relative to one another to provide an initial breach whereby gas is released to help provide a servo action sufficient to suddenly move the element and container farther relative to one another, thereby finishing the breach of the container to establish a maximum gas flow therefrom.
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10. A particle delivery device for firing particles at a target surface using a sudden gas flow, characterized in that said device comprises a container of compressed gas, an element for breaching the container to release the compressed gas when the element and container are moved relative to each other, and an adjustable stop for limiting the relative movement of the element and container, whereby said adjustable stop provides an adjustable restriction on the maximum outflow of gas from the container.
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11. A method for delivering particles to a target surface, sad method comprising:
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(a) providing a particle delivery device that comprises a container of compressed gas, a sealed capsule containing the particles, and a mechanism for releasing gas from the container to create a gas flow through the device, the mechanism comprising an element for breaching the container and a manually manipulable actuator for moving the element and the container relative to one another to provide an initial breach whereby gas is released to help provide a servo action sufficient to suddenly move the element and container further relative to one another, thereby finishing the breach of the container to establish a maximum gas flow therefrom; and
(b) actuating the device against the target surface, thereby delivering said particles to said surface. - View Dependent Claims (12)
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13. A method for delivering particles to a target surface, said method comprising:
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(a) providing a particle delivery device that comprises a container of compressed gas, an element for breaching the container to release the compressed gas when the element and container are moved relative to each other, a sealed capsule containing the particles, and an adjustable stop for limiting the relative movement of the element and container, whereby said adjustable stop provides all adjustable restriction on the maximum outflow of gas from the container and (b) actuating the device against the target surface, thereby delivering said particles to said surface. - View Dependent Claims (14)
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Specification