Patent EP0172711A2 successfully refreshed from Google Patents.
EP0172711A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Packaging
Assignee: Boots Co PLC
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Filing: 1985-08-08
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Granted: —
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Expires: 2005-08-08
Abstract
Abstract A collapsible container for medicaments or other liquids which must be preserved from contamination has a valve assembly which comprises a hollow projection -3 which is closed at its outer end and which has one or more apertures 9 in the wall through which the contents of the container are dispensed. The projection 3 is surrounded by a resiliently stretchable sleeve 10 which stretches to allow liquid dispensed through the apertures 9 to pass but which after dispensing seals the outlet of the apertures 9 to minimise the ingress of contaminants.
Inventors
- 👤 Rodger David Bouette
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 18:52
CPC Classifications
B; B65; B65D; B65D77/00; B65D77/04; B65D77/06; B65D77/062; B65D77/065; B65D47/00; B65D47/04; B65D47/06; B65D47/12; B65D47/14; B65D47/20; B65D47/2018; B65D47/205
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
183 words
1 ) A collapsible container for holding a liquid required to be protected from contamination, which container collapses as the liquid contained therein is dispensed, and is provided with a valve assembly which permits the egress of liquid from the container but which substantially prevents the ingress of contaminants into the container, said valve assembly comprising (a) a hollow projection extending outwardly from the container, in which the interior of the projection is in communication with the interior of the container and the outer end of the projection is closed, said projection being provided adjacent its outer end with one or more radially extending apertures which allow liquid to pass from the interior of the projection to the outside and (b) a resiliently stretchable closure element retained on the projection so as to cover the outermost end of said one or more apertures and be in sealing contact with the outer surface of the projection about said one or more apertures, which contact may be at least partly broken by compressing the container to expel liquid between the closure element and the projection.
Claim 2
Dependent Claim
183 words
1 ) A collapsible container for holding a liquid required to be protected from contamination, which container collapses as the liquid contained therein is dispensed, and is provided with a valve assembly which permits the egress of liquid from the container but which substantially prevents the ingress of contaminants into the container, said valve assembly comprising (a) a hollow projection extending outwardly from the container, in which the interior of the projection is in communication with the interior of the container and the outer end of the projection is closed, said projection being provided adjacent its outer end with one or more radially extending apertures which allow liquid to pass from the interior of the projection to the outside and (b) a resiliently stretchable closure element retained on the projection so as to cover the outermost end of said one or more apertures and be in sealing contact with the outer surface of the projection about said one or more apertures, which contact may be at least partly broken by compressing the container to expel liquid between the closure element and the projection.
Claim 3
Dependent Claim
46 words
2) A collapsible container as claimed in claim 1 in which the resilient closure element is a sleeve, surrounding the projection, whereby liquid expelled from the container through the one ore more apertures flows between the projection and sleeve to the outer end of the projection.
Claim 4
Dependent Claim
20 words
3) A collapsible container as claimed in claim 2 in which the sleeve is formed from latex or silicone rubber.
Claim 5
Dependent Claim
34 words
4) A collapsible container as claimed in claim 2 or claim 3 in which the sleeve is fitted onto the projection so that its outer end is flush with the end of the projection.
Claim 6
Dependent Claim
29 words
5) A collapsible container as claimed in any one of the preceding claims in which means to reduce droplet retention are provided at the outer end of the projection.
Claim 7
Dependent Claim
42 words
6) A collapsible container as claimed in claim 3 in which the means to reduce droplet retention are provided by a concave surface to the outer end of the projection and a sharp edge formed around the periphery of the outer end.
Claim 8
Dependent Claim
43 words
7) A collapsible container as claimed in any one of the preceding claims in which the cross-section of the projection is such that a generally flat or slightly convex surface is provided about the outer end of the or each radially extending aperture.
Claim 9
Dependent Claim
30 words
8) A collapsible container as claimed in any one of the preceding claims in which the valve assembly is provided with a cover to enclose it when not in use.
Claim 10
Dependent Claim
53 words
9) A collapsible container as claimed in claim 8 in which the cover is provided with a sealing member which is movable from a first position in which it contacts the closure element to prevent egress of liquid and a second position in which the sealing member is spaced from the closure element.
Claim 11
Dependent Claim
40 words
10) A collapsible container as claimed in claim 8 in which the sealing member is a finger which in the first position applies pressure to that portion of the sleeve overlying the outermost end of the one or more apertures.
Claim 12
Dependent Claim
164 words
11) A collapsible container for holding a liquid medicament or other liquid which is required to be sterile, in which the container collapses as the liquid contained therein is dispensed, and in which is provided with a valve assembly which permits the egress of liquid from the container but which prevents the ingress of air into the container, said valve assembly comprising (a) a hollow projection extending outwardly from the container, in which the interior of the projection is in communication with the interior of the container and the outer end of the projection is closed, said projection being provided adjacent its outer end with one or more radially extending apertures which allow liquid to pass from the interior of the projection to the outside and (b) a resilient sleeve surrounding the projection and in sealing contact with the outer surface of the projection along at least that part of its length adjacent to the outermost end of the one or more radially-extending apertures.
Claim 13
Dependent Claim
164 words
11) A collapsible container for holding a liquid medicament or other liquid which is required to be sterile, in which the container collapses as the liquid contained therein is dispensed, and in which is provided with a valve assembly which permits the egress of liquid from the container but which prevents the ingress of air into the container, said valve assembly comprising (a) a hollow projection extending outwardly from the container, in which the interior of the projection is in communication with the interior of the container and the outer end of the projection is closed, said projection being provided adjacent its outer end with one or more radially extending apertures which allow liquid to pass from the interior of the projection to the outside and (b) a resilient sleeve surrounding the projection and in sealing contact with the outer surface of the projection along at least that part of its length adjacent to the outermost end of the one or more radially-extending apertures.
References Cited (Backward Citations)
No citation records indexed.
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