CA2167586C — Needle-less injector
Assigned to Zogenix Inc · Expires 2005-01-25 · 21y expired
What this patent protects
A needle-less injector comprises a cartridge (3) prefilled with liquid (9), which cartridge contains a free sliding piston (32) and an injection orifice (10). A ram (22) is urged by a pre-loaded spring (24) for striking the said piston to cause the injections. Adjusting means (6)…
USPTO Abstract
A needle-less injector comprises a cartridge (3) prefilled with liquid (9), which cartridge contains a free sliding piston (32) and an injection orifice (10). A ram (22) is urged by a pre-loaded spring (24) for striking the said piston to cause the injections. Adjusting means (6) can be provided to vary the volume injected. A trigger device (26, 30) initiates injection only when the optimum contact pressure is reached between the discharge orifice (1) and epidermis of the subject. T he initial loading of the power spring (24) is sufficient to dispense all of the contents of the medicament cartridge in one dose or multiple sequential doses. Disposable and reusable embodiments are described.
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.