Safety needle
First Claim
Patent Images
1. 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.
1 Assignment
0 Petitions
Accused Products
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.
-
Citations
17 Claims
-
1. 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
Specification