Shieldable needle assembly with biased safety shield
First Claim
1. A safety needle assembly comprising:
- a base hub including a laterally extending arm;
a needle cannula extending from a distal end of said base hub, said needle cannula including a distal end having a puncture tip;
a shield pivotably connected to said base hub, said shield being pivotal with respect to said needle cannula between a shielded position encompassing said distal end of said needle cannula and a non-shielded position pivotally spaced from said distal end of said needle cannula, said shield including a laterally extending lever adjacent said laterally extending arm of said hub, said laterally extending lever and said laterally extending arm extending away from the same side of a plane defined by the longitudinal axis of said needle cannula and a pivot of said shield; and
a biasing element extending between said laterally extending arm of said hub and said laterally extending lever of said shield for biasing said shield toward the shielded position, said biasing element capable of storing energy when said shield is in said non-shielded position for biasing said shield to said shielded position.
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Accused Products
Abstract
The present invention is directed to a needle safety device including a medical device, such as a needle holder or a syringe. The device includes a needle cannula having a puncture tip extending from an end of the medical device. A shield pivotably connected to the medical device is pivotal with respect to the needle cannula between a shielded position encompassing the needle cannula and a retracted or non-shielded position pivotally spaced from the needle cannula. The shield includes a laterally extending lever, and the medical device includes a laterally extending arm. A biasing element having stored energy for biasing the needle cannula toward the shielded position is positioned between the lever and the arm. Movement of the lever and the arm toward each other pivots the shield to the retracted position, and releasing the lever and arm allows the stored energy of the spring to pivot the shield into the shielded position.
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Citations
26 Claims
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1. A safety needle assembly comprising:
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a base hub including a laterally extending arm;
a needle cannula extending from a distal end of said base hub, said needle cannula including a distal end having a puncture tip;
a shield pivotably connected to said base hub, said shield being pivotal with respect to said needle cannula between a shielded position encompassing said distal end of said needle cannula and a non-shielded position pivotally spaced from said distal end of said needle cannula, said shield including a laterally extending lever adjacent said laterally extending arm of said hub, said laterally extending lever and said laterally extending arm extending away from the same side of a plane defined by the longitudinal axis of said needle cannula and a pivot of said shield; and
a biasing element extending between said laterally extending arm of said hub and said laterally extending lever of said shield for biasing said shield toward the shielded position, said biasing element capable of storing energy when said shield is in said non-shielded position for biasing said shield to said shielded position. - 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 needle assembly comprising:
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a base hub including an internal opening therethrough and a laterally extending arm;
a needle cannula extending through said opening of said hub, said needle cannula including a proximal end extending from a proximal end of said hub and including a non-patient puncture tip, and a distal end extending from a distal end of said hub and including an intravenous puncture tip;
a shield pivotably connected to said distal end of said hub, said shield being pivotal with respect to said needle cannula between a shielded position encompassing said distal end of said needle cannula and a non-shielded position pivotally spaced from said distal end of said needle cannula, said shield including a laterally extending lever adjacent said laterally extending arm of said hub, said laterally extending lever and said laterally extending arm extending away from the same side of a plane defined by the longitudinal axis of said needle cannula and a pivot of said shield; and
a biasing element extending between said laterally extending arm of said hub and said laterally extending lever of said shield for biasing said shield toward the shielded position, said biasing element capable of storing energy when said shield is in said non-shielded position for biasing said shield to said shielded position. - View Dependent Claims (18, 19)
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20. A safety needle assembly comprising:
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a hub including a laterally extending arm;
a needle cannula extending from a distal end of said hub and including a distal end having a puncture tip;
a shield pivotably connected to said hub, said shield being pivotal with respect to said needle cannula between a shielded position encompassing said distal end of said needle cannula, and a non-shielded position pivotally spaced from said distal end of said needle cannula, said shield including a laterally extending lever adjacent said hub, said laterally extending arm of said hub and said laterally extending lever of said shield including interengaging structure for maintaining said shield in said non-shielded position, said shield further including a needle cannula lock which in a first position provides for movement of said shield from said shielded position and in a second position prevents movement of said shield from said shielded position; and
a biasing element extending between said laterally extending arm of said hub and said laterally extending lever of said shield for biasing said shield toward the shielded position, said biasing element capable of storing energy when said shield is in said non-shielded position for biasing said shield to said shielded position. wherein said needle cannula lock in said first position exerts a biasing force against said needle cannula biasing said shield toward the non-shielded position, and said spring exerts a biasing force greater than said biasing force exerted by said cannula lock for maintaining said shield biased toward the shielded position. - View Dependent Claims (21)
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22. A safety needle assembly comprising:
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a base hub including a proximal end and a distal end;
a needle extending from the distal end of the hub, said needle including a distal end having a puncture tip;
a laterally extending arm adjacent the distal end of said hub and extending laterally from the hub;
a laterally extending lever extending laterally from the distal end of the hub;
a hinge section formed at the intersection of said laterally extending arm and said laterally extending lever and defining an acute angle therebetween, said hinge section further defining a pivot axis for pivotal movement of said laterally extending lever with respect to said laterally extending arm between a first position and a second position with said second position defining an angle which is more acute than said first position; and
a shield integral with said laterally extending lever and extending toward the distal end of said needle for encompassing said distal end of said needle when said hinge is in said first position, wherein pivotal movement of said laterally extending lever from said first position to said second position causes biasing energy to accumulate between said laterally extending arm and said laterally extending lever, said biasing energy biasing said laterally extending lever to said first position for encompassing said distal end of said needle. - View Dependent Claims (23, 24, 25, 26)
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Specification