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US 10,300,203 B2Granted
Priming mechanism for automatic injection device
AssigneeMin Wei
InventorMin Wei
Life of this patent
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AssigneeMin Wei
InventorMin Wei
Estimating the term…
A priming mechanism for operating an automatic injection apparatus to ensure medication contents are properly delivered prior to a needled syringe of the apparatus being injected. The priming mechanism includes a push rod to move plunger(s) within the syringe; a releasable support including bendable supporting arms, which limiting motion of the syringe relative to an upper housing body before and during priming; and a recess element inside the lower housing body to release said bendable arm to allow motion of the syringe relative to the upper housing body in distal direction after priming. In one form, the priming mechanism is used for removing air bubble before injection to ensure delivering correct dose. In another form, the priming mechanism is used to mix different contents in a dual chamber syringe before injection.
In an automatic injection apparatus having an upper housing body, a lower housing body, a syringe with a piston, and a resilience member for moving said syringe in distal direction within said upper housing body, and to advance said piston to force syringe content out for an injection, a priming mechanism comprising:
In an automatic injection apparatus having an upper housing body, a lower housing body, a syringe with more than one chambers sealed by more than one piston and a by-pass channel, and a resilience member for moving said syringe in distal direction within said upper housing body, and to advance said piston to force syringe contents out for an injection, a priming mechanism comprising:
Dependencies are inferred from the claim text.