Surgery – Container for blood or body treating material – or means used... – Container with piercable closure
Patent
1990-01-26
1992-06-30
Hafer, Robert A.
Surgery
Container for blood or body treating material, or means used...
Container with piercable closure
604416, 215247, B65D 4132
Patent
active
051259214
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a closure arrangement for pharmaceutical bottles, which closure arrangement comprises a stopper which closes the bottle mouth and can be pierced by means of a hollow needle for extracting medicaments from the bottle, and a closure cap enclosing a welt ring, formed at the bottle around the bottle mouth, and the stopper, and which closure cap comprises a tear-off disc which is located above the stopper, limited by a weakening line and removable upon opening the closure.
2. Description of Background and Revelant Information
A closure arrangement of the above-mentioned type is known from German Patent No. 1,207,043. This closure arrangement consists of a combination of a cap which is mounted at the bottle, and of a rubber stopper which pierceably closes the pharmaceutical bottle. The cap comprises an upper structural member with an inner part and with an outer part. The inner and outer parts are connected with each other by breakable bridge parts. The inner part is connected to a cover member which can be pressed away from the bottle by means of thumb pressure, in order to thereby fracture the bridge parts and to release and remove the inner part of the cap from the outer part. The rubber stopper beneath the inner part of the cap is thereupon free to be pierced by a hollow needle. A disadvantage of this closure arrangement is seen in the fact that the cover member must be removed from the bottle by thumb pressure, whereby the root portion of the finger-nail is undesirably strained. Furthermore, there exists the risk of injury at the locations of fracture of the bridge parts formed of metal. A further economical disadvantage is thereby given in that too many components are required for the closure arrangement, namely a part which is flangeable onto the bottle, a cover member connected therewith and a rubber stopper. For flanging the cap onto the bottle and for the connection of the inner part with the cover member there are required complicated special devices. The production costs of the cap components made of metal are also relatively high.
SUMMARY OF THE INVENTION
The object of the present invention is to provide a closure arrangement of the above-mentioned type which is economically advantageous and in which the tear-off disc can be one-handedly removed in a safe, convenient and rapid manner.
This object is achieved in that the closure cap is formed of plastic material in one piece with the tear-off disc, that the closure cap in the unopened condition of the closure is mounted at the welt ring of the bottle to be displaceable by pressing in the direction toward the bottle, and that a spacer is provided between the tear-off disc retained by means of the weakening line at the closure cap of the unopened closure, and the stopper located therebelow, such spacer not extending beyond the outline of the tear-off disc. This closure arrangement is economically advantageous. For example, the closure cap together with the tear-off disc is economically produced, advantageously from plastic material, in a one-step process. The closure cap, with the closure in the unopened condition, can be safely and conveniently one-handedly pressed upon the bottle in the direction toward the bottle. The tear-off disc is thereby separated from the closure cap and clears the stopper for the extraction of a medicament located in the bottle by means of a hollow needle which can be pierced through the stopper. With this closure cap there is no risk of injury.
The spacer can be advantageously formed in one piece with the tear-off disc and/or with the stopper. This measure renders possible that the closure arrangement consists only of two economically advantageous components, namely of the closure cap and of the stopper.
The spacer can be formed in one piece with the tear-off disc, and the end of the tear-off disc, such end facing the stopper, can thereby sealingly engage the stopper when the closure is unopened. This measure ensures that the surface o
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patent: 4465200 (1984-08-01), Percarpio
patent: 4592092 (1986-05-01), McPhee
patent: 4632673 (1986-12-01), Tiitola et al.
patent: 4834152 (1989-05-01), Howson et al.
patent: 4863453 (1989-09-01), Berger
Hafer Robert A.
Owens Kerry
Wez Kunststoffwerk AG
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