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Safety shield system for a syringe

  • US 20050096597A1
  • Filed: 11/03/2003
  • Published: 05/05/2005
  • Est. Priority Date: 11/03/2003
  • Status: Abandoned Application
First Claim
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1. A medical device for delivering a medicament to a patient, comprising:

  • a syringe assembly comprising;

    a barrel having a forward end and a rear end and defining a reservoir within which the medicament may be contained;

    a needle cannula having a forward tip and being coupled to said forward end of said barrel and in fluid communication with said reservoir;

    for delivering the medicament to the patient when said forward tip pierces the patient; and

    a plunger having a first end with a stopper positioned in said reservoir and a second end having a thumb pad for receiving medicament delivery pressure for causing said plunger to move within said reservoir to cause the medicament to be expelled from said reservoir through said needle cannula forward tip;

    a hollow shield body disposed on said front portion of said syringe barrel and releasably secured thereto, said shield body being selectively movable from a first position wherein said needle cannula forward tip is exposed, to a second position wherein said needle cannula forward tip is contained within said hollow shield body;

    an urging member positioned between said hollow shield body and said barrel for imparting an urging force to said shield body for urging said shield body to said second position; and

    an actuator mounted to said syringe barrel, said actuator axially movable from an initial position on said syringe barrel to a retracted position away from said needle cannula forward tip in response to the commencement of an application of the medicament delivery force to said thumb pad for releasing said hollow shield body from said barrel to allow said hollow shield body to move, under the urgency of said urging member, to said second position upon removal of said needle cannula tip from the patient.

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