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Details for Patent: 4,968,299

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Summary for Patent: 4,968,299

Title: Method and device for injection
Abstract:A dual-chamber cylinder ampoule is used for the mixture of a sensitive, solid medicament, with liquid which is caused to flow calmly through the medicament in order to avoid any shaking and mechanical influence. The mixing is preferably carried out at a pressure above atmospheric. An injection device for the preparation of an injection solution and a following injection of such solution includes first and second tubular members for enclosing and holding a dual-chamber cylinder ampoule, in which the dry medicament is kept separated from the liquid. When the two tubular members are being screwed together the liquid is calmly and gently mixed with the dry medicament and dissolves it, and the resulted solution can thereafter be injected by means of the dosage and administration mechanism, provided in one tubular member, through a needle arranged at the front end of the other tubular member.
Inventor(s): Ahlstrand; Bo (Djursholm, SE), Florin-Robertsson; Ebba (Stockholm, SE), Fryklund; Linda (Sollentuna, SE), Hjertman; Birger (Vallingby, SE), Strom; Anders (Saltsjo-Boo, SE)
Assignee: KabiVitrum AB (Stockholm, SE)
Application Number:07/212,647
Patent Claim Types:
see list of patent claims
Use; Formulation; Device;

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Foreign Priority and PCT Information for Patent: 4,968,299

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Sweden8702735Jul 02, 1987
Sweden8801405Apr 15, 1988

International Patent Family for Patent: 4,968,299

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
European Patent Office0298067<disabled in preview>
JapanS6480371<disabled in preview>
Spain2026695<disabled in preview>
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
Due to the complexity of determining patent expirations even in a single country, compounded by the diversity of global patent laws, it is advisable to have patent counsel verify freedom to operate.

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