Charging hypodermic syringes with injectant
OwnerDavid William Parker, Colin Hamilton Burgessinventors
Life of this patent
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Abstract
A hypodermic syringe (1, 2) includes a needle (3) covered by a needle sheath (4) that comprises a tubular sheath body (5) with a removable end cap (6). Injectant is transferred into the main body (1) of the syringe by removing the end cap, inserting the needle together with the sheath body (5) into a source of injectant and operating the plunger so as to draw the injectant through open end (6) of the plunger through the needle into the main body. The process is carried out without exposing the needle to the user's touch.
Claims13
A method of charging an hypodermic syringe with an injectant, the syringe including a needle covered by a needle sheath, the method comprising opening the needle sheath, and causing induction of an injectant into the syringe through the needle without exposing the needle to the user's touch.
A method according to any preceding claim including inserting the needle sheath into an injectant dispenser to allow the induction of the injectant from the dispenser into the syringe through the needle without exposing the needle to the user's touch.
A method according to any preceding claim wherein the syringe comprises a syringe body and a plunger slidably received in the syringe body, and the induction of the injectant is carried out by operating the plunger.
A method according to any preceding claim including automatically withdrawing the needle into the syringe after use thereof to inject the injectant.
Dependencies are inferred from the claim text.