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US 7,396,342 B2Granted
Safety syringe for taking blood
AssigneeBiotop Holding Co., Ltd.
InventorsShih-Chun Wang, Kiwi Yuan, Jia-Ming Chang
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AssigneeBiotop Holding Co., Ltd.
InventorsShih-Chun Wang, Kiwi Yuan, Jia-Ming Chang
Estimating the term…
A safety syringe for taking blood has a hollow barrel having a bottom open end, a top end, a rectangular hole defined in the top end to have two opposite long sides and two opposite short sides, a needle hub detachably connected between the two opposite short sides of the rectangular hole and having a first needle extending from an elliptical body into an interior of the hollow barrel and a second needle extending away from the hollow barrel, a cap rotatably connected to the top end of the hollow barrel and having a notch defined through a periphery of the cap to receive therein the elliptical body so that the second needle extends out of the cap after in combination with the cap and an enclosure detachably enclosing the second needle for protection.
A safety syringe for taking blood comprising:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
Devices specially adapted for taking samples of venous or arterial blood, e.g. with syringes: devices using pre-evacuated means
Source of blood: for venous or arterial blood
Design of piercing elements: hollow piercing elements, e.g. canulas, needles, for piercing the skin
Double-ended needles, e.g. used with pre-evacuated sampling tubes: details of construction of hub, i.e. element used to attach the double-ended…
Term ended 8 Jun 2026 (estimated)
1. Field of the Invention
The present invention relates to a syringe, and more particularly to a safety syringe that can safely retract a used needle back into a barrel and prevent users from being hurt by the used needle.
2. Description of Related Art
FIG. 1 is a perspective view of a preferred embodiment of a safety syringe for taking blood in accordance with the present invention;
FIG. 2 is an exploded perspective view of the safety syringe for taking blood of the present invention;
FIG. 3 is an exploded perspective view of the safety syringe for taking blood from a different angle;
With reference to FIGS. 1, 2 and 3, a safety syringe for taking blood in accordance with the present invention has a hollow barrel (10), a cap (20), a needle hub (30) and an enclosure (40).
The hollow barrel (10) is cylindrical and has a bottom open end and a top end with a board (11) integrally formed on a periphery defining the top end. A rectangular hole (12) is defined in the board (11) and a sectorial hole (13) is also defined in the board (11) to communicate with the rectangular hole (12). A stop (14) is formed on and extends out of the board (11) in a direction away from the interior of the hollow barrel (10). A bottom cap (15) is foldably attached to a periphery defining the bottom open end and a first rib (16) is formed on an outer periphery of the hollow barrel (10) near the top end.
The cap (20) is rotatably connected to the top end of the hollow barrel (10) and has an extension (201) extending from an outer side of the cap (20), a second rib (202) formed on an inner periphery of the cap (20) to correspond to the first rib (16) of the hollow barrel (10) such that after the cap (20) is mounted on the top end of the hollow barrel (10) and the second rib (202) extends over the first rib (16), the cap (20) is able to freely rotate relative to the hollow barrel (10), a notch (21) defined through a periphery of the cap (20) as well as the extension (201) and a guiding recess (22) defined inside the cap (20) to correspond to and receive therein the stop (14) of the hollow barrel (10).