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US 2003/0120222 A1Published application
Safety needle
OwnerVincent L. Vaillancourtinventor
Life of this patent
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Abstract
The safety needle employs a manually operable actuator that can be depressed into a housing in order to release a spring-biased slider that carries a hollow needle. Upon release, the slider moves into a position to retract the needle over a blunt cannula so that the blunt cannula protects against cutting by the needle. An actuator guard may also be employed to prevent inadvertent actuation of the actuator.
Claims17
A safety needle comprising
- a housing;
- a blunt cannula mounted in and extending from said housing;
- a slider movably mounted in said housing and on said blunt cannula for movement between a locked position and an unlocked position;
- a needle mounted in and extending from said slider in concentric relation to said blunt cannula, said needle having a sharpened end projecting beyond said blunt cannula in said locked position of said slider and retracted over said blunt cannula in said unlocked position of said slider;
- a spring in said housing for biasing said slider from said locked position towards said unlocked position;
- a manually operated actuator movable between a first position blocking movement of said slider from said locked position to said unlocked position and a second position allowing movement of said slider from said locked position to said unlocked position under a biasing force of said spring.
3 more elements
Dependencies are inferred from the claim text.