Shield and actuator for needles
First Claim
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1. A shieldable needle assembly comprising:
- a needle having proximal and distal ends;
a hub securely mounted around said proximal end of said needle;
a needle guard slidably mounted on said needle and movable from a proximal position where said distal end of said needle is exposed to a distal position where said needle guard safely guards said distal end of said needle;
a hinged arm articulated to said hub and to said needle guard and being movable from said collapsed condition where said needle guard is in said proximal position to an extended condition where said needle guard is in said distal position on said needle; and
a trigger articulated to said hub at a location proximally of said hinged arm, said trigger including a cam surface spaced from said hub and slidably engaged with said hinged arm such that articulation of said trigger toward said hinged arm urges said hinged arm into said extended condition and said needle guard into said distal position on said needle.
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Abstract
A shieldable needle assembly includes a needle guard slidably movable along a needle cannula from a proximal position where the distal end of the needle cannula is exposed to a distal position where the distal end of the needle cannula is safely shielded within the needle guard. A hinged arm assembly connects the needle guard assembly to needle hub. A trigger is articulated to the needle hub at a location proximally of the hinged arm. Distally directed digital forces cause the trigger to rotate such that the trigger urges the hinged arm from a collapsed condition to an extended condition.
186 Citations
15 Claims
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1. A shieldable needle assembly comprising:
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a needle having proximal and distal ends; a hub securely mounted around said proximal end of said needle; a needle guard slidably mounted on said needle and movable from a proximal position where said distal end of said needle is exposed to a distal position where said needle guard safely guards said distal end of said needle; a hinged arm articulated to said hub and to said needle guard and being movable from said collapsed condition where said needle guard is in said proximal position to an extended condition where said needle guard is in said distal position on said needle; and a trigger articulated to said hub at a location proximally of said hinged arm, said trigger including a cam surface spaced from said hub and slidably engaged with said hinged arm such that articulation of said trigger toward said hinged arm urges said hinged arm into said extended condition and said needle guard into said distal position on said needle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A single handedly actuatable shield assembly for a needle, said needle comprising an elongate needle cannula having opposed proximal and distal ends and a hub securely mounted around said proximal end of said needle cannula, said shield assembly comprising:
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a shield hingedly connected to said hub and movable from a first condition where said distal end of said needle cannula is exposed to a second position where said distal end of said needle cannula is enclosed by said shield; and a trigger hingedly connected to said hub at a location spaced from said shield, portions of said trigger spaced from said hub being engageable with portions of said shield for urging said shield into said second position where said distal end of said needle cannula is enclosed. - View Dependent Claims (11, 12, 13, 14, 15)
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Specification