Positive displacement flush syringe

Positive displacement flush syringe

  • CN 101,119,762 A
  • Filed: 01/04/2006
  • Published: 02/06/2008
  • Est. Priority Date: 01/07/2005
  • Status: Active Grant
First Claim
Patent Images

1. irrigating syringe assembly comprises:

  • Tube, this tube has;

    cylindrical side wall, the inner surface of this cylindrical side wall have determined to be used to keep fluidic chamber;

    Open proximal;

    And far-end, this far-end comprises distal wall, and this distal wall has the tip of distad extending from it, and there is the passage that passes with this chamber in fluid communication at this tip;

    Plunger, this plunger comprises elongate body portion, this elongate body portion has near-end and far-end, retainer is arranged to carry out fluid-tight engagement with the inner surface of described tube slidably, be used for fluid being released from this chamber with respect to the motion of described tube by described retainer, described elongate body portion stretches out from the described open proximal of described tube;

    Discontinuous part on described plunger is used for closing with this socket joint, is used at described retainer all liq all from stopping the distal movement of described plunger before chamber transfers out fully;

    Described retainer comprises;

    the proximal stopper part, and this proximal stopper part is connected with the described far-end of described plunger;

    And distal stopper part, this distal stopper part is partly separated with described proximal stopper by spring assembly, being used for described discontinuous part on described plunger closes with described socket joint so that stop after the distal motion of described plunger described distal stopper part being moved along distal direction, so that more liquid are released from described chamber.

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