Pen needle and safety system
First Claim
1. A safety shield system comprising:
- a needle assembly comprising;
a hub member;
a needle cannula carried by said hub member and having first and second ends;
a clip member on said hub member and having a resilient finger;
first shielding means having an open end near said first end of said needle cannula, and a generally closed end near said second end of said cannula and having an aperture defined therethrough, said first shielding means being moveably arranged with respect to said hub member between a first position surrounding said needle cannula, a second position exposing a part of said needle cannula, and a third position lockingly surrounding said needle cannula; and
means engaging said first shielding means for biasing said first shielding means toward said first and third positions; and
second shielding means for lockingly receiving said open end of said first shielding means and enclosing said first end of said needle cannula.
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Accused Products
Abstract
A safety shield system having a needle assembly with a safety shield movable from a first position enclosing an end of a needle cannula, to a second position exposing the end of the needle cannula for injection, to a third position lockingly enclosing the end of a needle cannula. The safety shield system permits retraction of the safety shield during use, but extends the shield enclosing the needle cannula in a locked position following use. The safety shield system also has a cap for receiving the needle assembly and lockingly enclosing another end of the needle cannula. Thus, both ends of a double-ended needle cannula are lockingly enclosed following use of the needle assembly of the inventive safety shield system.
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Citations
22 Claims
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1. A safety shield system comprising:
a needle assembly comprising;
a hub member;
a needle cannula carried by said hub member and having first and second ends;
a clip member on said hub member and having a resilient finger;
first shielding means having an open end near said first end of said needle cannula, and a generally closed end near said second end of said cannula and having an aperture defined therethrough, said first shielding means being moveably arranged with respect to said hub member between a first position surrounding said needle cannula, a second position exposing a part of said needle cannula, and a third position lockingly surrounding said needle cannula; and
means engaging said first shielding means for biasing said first shielding means toward said first and third positions; and
second shielding means for lockingly receiving said open end of said first shielding means and enclosing said first end of said needle cannula. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A safety shield system comprising:
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a needle assembly comprising;
a hub member;
a needle cannula carried by said hub member and having first and second ends;
a clip member on said hub member and having a resilient finger;
a tubular shield having an open end near said first end of said needle cannula, and a generally closed end near said second end of said needle cannula, said generally closed end having an aperture defined therethrough, said tubular shield being moveably arranged with respect to said hub member between a first position surrounding said needle cannula, a second position exposing a part of said needle cannula, and a third position lockingly surrounding said needle cannula; and
a spring for biasing said tubular shield toward said first and third positions; and
a first cap to lockingly receive said open end of said tubular shield to lockingly enclose said first end of said needle cannula. - View Dependent Claims (18, 19, 20, 21)
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22. An injection system comprising:
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a pen injector having means for receiving a needle assembly;
a needle assembly removably securable to said pen injector and comprising;
a hub member complementarily sized and shaped with said receiving means of said pen injector for removably securing said needle assembly to said pen injector;
a needle cannula carried by said hub member and having first and second ends;
a clip member on said hub member and having a resilient finger;
first shielding means having an open end near said first end of said needle cannula, and a generally closed end near said second end of said cannula and having an aperture defined therethrough, said first shielding means being moveably arranged with respect to said hub member between a first position surrounding said needle cannula, a second position exposing a part of said needle cannula, and a third position lockingly surrounding said needle cannula; and
means engaging said first shielding means for biasing said first shielding means toward said first and third positions; and
second shielding means for lockingly receiving said open end of said first shielding means and enclosing said first end of said needle cannula after said needle assembly is removed from said pen injector.
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Specification