Star Syringe Limited

Graham John Madin

Marc Andrew Koska

Steffen Kramer

Norbert Rudolf

A needlestick prevention device () for an injection needle carried by a needle-bearing member () of a syringe () is formed as a one-piece moulding and comprises a first part () adapted to be attached to the needle-bearing member () and a second part () providing a shield for the needle and pivotally movable relative to the first part to expose the needle for use. The device is adapted to adopt a first position in which the needle is protected for transport of the device prior to use, a second position in which the needle is exposed for filling of the syringe and injection, a third position in which the needle is protected after filling of the syringe but before injection and a fourth position in which the needle is locked in the device following injection. In one embodiment the shield () has a transport recess () and a locking recess () connected by a gate device (), the arrangement being such that in the third position the needle () is in the transport recess () and is able to move into the second position, and in the fourth position the needle moves through the gate device () into the locking recess (), with the gate device () preventing movement out of the fourth position. The device also includes energy-dissipating bumps () operative to reduce the energy of the shield () as it is returned to the third position and before the gate device contacts the needle () in order to prevent splattering of any liquid on the needle () out of the device.

Needlestick prevention device

A needlestick prevention device for an injection device having a hollow needle comprises a sheath for attachment to the injection device. The sheath has three positions. In a first, inoperative position the sheath sealingly encloses the needle. In a second operative position a first part of the sheath is removed, a second part remains attached to the injection device and a third part is pivoted about a hinge to expose the needle. In a third, cover position the third part is pivoted about the hinge to cover at least the tip of the needle and is retained in position by a retaining device acting between the second part and the third part. The needlestick prevention device is simple to manufacture and use.

A syringe comprises a barrel with a plunger in slidable and sealing engagement therein, and a needle attached to one end of the barrel. The barrel has an aspiration device in the form of manually-operable resilient portions, which can be operated to cause a pressure differential in the barrel, the pressure differential then being used to perform aspiration. The resilient portions are preferably formed by localized reductions of wall thickness in the external surface of the barrel.

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Mielkendorf, Germany

Graham John Madin