Needle-retracting needle holder and syringe
AssigneeSyringus AS
InventorsMorten Gulliksen, Helge Kristiansen
Life of this patent
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Abstract
The invention relates to a needle bolder, for use in combination with a syringe and a needle, characterized in that the needle holder is provided with an expandable element and with retention means for the expandable element, so that contact of the expandable element with an injection causes expansion of the expandable element and, as a consequence retraction of the needle into the needle holder. The invention relates too to a syringe comprising said needle holder.
Claims25
Needle holder for use in combination with a syringe and a needle, comprising a spring and retention means for the spring, the retention means comprising a stopper connects to the needle and releasably connected to the needle holder, and a connecting element of alginate that releasably connected the stopper to the needle holder and that loses mechanical strength upon contact with a fluid, the spring being compressed between the stopper and the needle holder's needle end, wherein the connecting element is a drop of alginate and the needle holder is provided with at least one opening for housing said drop of alginate.
Needle holder for use in combination with a syringe and a needle, comprising a spring and retention means for the spring, the retention means comprising a stopper connected to the needle and releasably connected to the needle holder, and a connecting element in the form of a washer that releasably connects the stopper to the needle holder and that loses mechanical strength upon contact with a fluid, the spring being compressed between the stopper and the needle holder's needle end, wherein the washer has an outer extension which is bigger than the stopper, and is provided with a central opening which is smaller than the stopper, the spring thereby forcing the stopper through the washer when the washer loses mechanical strength.
Dependencies are inferred from the claim text.