EP0072057A1 — Automatic injection syringe
Assigned to Duphar International Research BV · Expires 1983-02-16 · 43y expired
What this patent protects
The invention relates to an automatic syringe for injecting two or more different injection liquids which may not be in contact with each other for longer pe- rlods of time. For that purpose the ampoule between piston and needle connection comprises one or more stoppers which kee…
USPTO Abstract
The invention relates to an automatic syringe for injecting two or more different injection liquids which may not be in contact with each other for longer pe- rlods of time. For that purpose the ampoule between piston and needle connection comprises one or more stoppers which keep the injection liquids separated from each other, while at a short distance before the needle connection a by-pass means is present past which the Injection liquid or injection liquids present behind the stopper or stoppers can pass the stopper or stoppers during use of the syringe.
Drugs covered by this patent
Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.
Track this patent
Get a daily-checked alert when vulnerability score, expiry, classification, or assignee changes. Email, Slack, or Teams delivery. Pro: 50 watches, Free: 3.