GB2460398A — Auto-injector having a magnetic injection indicator and a needle sheath retainer
Assigned to Owen Mumford Ltd · Expires 2009-12-02 · 16y expired
What this patent protects
An auto-injector is provided with a magnetically operated "injection complete" indicator. A moveable magnet (44) associated with the drive piston (38) is kept at one end of a recess by a soft iron keeper (46) until the drive piston reaches its forward position where the m…
USPTO Abstract
An auto-injector is provided with a magnetically operated "injection complete" indicator. A moveable magnet (44) associated with the drive piston (38) is kept at one end of a recess by a soft iron keeper (46) until the drive piston reaches its forward position where the moveable magnet (44) is attracted to impact a magnet (48) on the housing to generate an audible click. Also described is a spring finger (52) that slips behind the rear edge of the syringe boot (50) temporarily to hold the end of the boot well clear of the housing to that it can be gripped for removal.
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.
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