Unit dose dispensing device
First Claim
1. A nozzle assembly for intranasal administration of a unit dose of a substance, said nozzle assembly being adapted for releasable attachment to a body having a system actuable to effect discharge of a substance, said nozzle assembly comprising a container which houses a unit dose of a substance, means for releasably attaching the nozzle assembly to the body, and dispensing means co-operable with said discharge system whereby the discharge system of the body comprises a ram, and the dispensing means of the nozzle assembly comprises means for piercing the container in response to the movement of the ram, such that dispensing of a substance from the container occurs in response to movement of the ram.
6 Assignments
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Accused Products
Abstract
A device for dispensing a unit dose of substance comprises a nozzle assembly (2) including a container (24) housing a unit dose of the substance, and an outer body (4) to which the nozzle assembly (2) is releasably attached. The body (4) includes a system actuable to effect discharge of the substance from the nozzle assembly (2) and actuating means operably by a user to effect discharge. Preferably the discharge system comprises a spring-loaded air piston (68) actuable to inject air into the container (24) to cause discharge of the substance. In one embodiment a driving spring for the air piston is loaded with spring energy by the action of installing the nozzle assembly on the body, the driving spring thereafter being held in a cocked state until operating of the actuating means by the user to effect release of the spring energy to cause discharge.
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Citations
23 Claims
- 1. A nozzle assembly for intranasal administration of a unit dose of a substance, said nozzle assembly being adapted for releasable attachment to a body having a system actuable to effect discharge of a substance, said nozzle assembly comprising a container which houses a unit dose of a substance, means for releasably attaching the nozzle assembly to the body, and dispensing means co-operable with said discharge system whereby the discharge system of the body comprises a ram, and the dispensing means of the nozzle assembly comprises means for piercing the container in response to the movement of the ram, such that dispensing of a substance from the container occurs in response to movement of the ram.
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20. A nozzle assembly for dispensing a unit dose of a substance, said nozzle assembly being adapted for releasable attachment to a body having a system actuable to effect discharge of a substance by the injection of air, said nozzle assembly comprising a capsule housing a unit dose of a substance, said capsule being mounted between outer and inner hallow needles at opposite ends of the capsule, the inner needle being displaceable towards the outer needle under the action of a ram so as to pierce the capsule whereby dispensing of a substance can then be effected by injecting air from the discharge system of the body into the capsule via the inner needle with a substance being discharged from the capsule via the outer needle.
- 22. A device for dispensing a unit dose of a substance, said device comprising a nozzle assembly including a container housing a unit dose of a substance, and a body to which the nozzle assembly is releasably attached, said body including a system actuably to effect discharge of a substance from the nozzle assembly, and actuating means operable by a user to effect discharge, the nozzle assembly being removable from the body after use and being replaceable by a further such nozzle assembly to permit dispensing of a unit dose of a substance from that nozzle assembly, wherein the discharge system comprises a spring-loaded air piston actuable to inject air into the container to cause discharge of a substance.
Specification