Blood sampling device
DCFirst Claim
1. A disposable pricker comprising an elongate body with a lancet non-rotatably carried therein, the lancet tip normally being within the body, a spring urging the lancet in a direction to project its tip from the body, a trigger mechanism carried by the body with a portion within the body arranged to retain the lancet in a fully retracted position energizing the spring and a second portion outside the body manually actuable to release the lancet to cause the tip to have a momentary position projecting from an opening in the forward end of the body, and a cap encasing the lancet tip and having a shank traversing said opening, wherein said shank extends outwardly of said body through said opening a distance sufficient to permit said lancet to be moved against the action of said spring to said fully retracted position solely by pushing said cap further into said body through said opening, and wherein said cap is breakable free of the lancet by twisting when so retracted to leave the tip exposed within said body.
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Accused Products
Abstract
A blood sampling device has a tubular body (1, 2) housing a spring loaded (7) lancet (8) whose needle (17) is initially protected by a cap (20) which projects out from the forward end of the body. A rocker-like trigger (9) is formed as part of the moulded body (1,2) and holds the lancet (8) in a retracted position when the lancet is pushed back by the projecting cap (20). The cap can then be removed by a twist and pull action, breaking it free from the lancet body, which is prevented from rotating. Pressure on the trigger (9) releases the lancet (8), which is shot forward by the spring (7) for momentary projection of the needle tip (19), and then retracts to bring the needle tip within the body.
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Citations
7 Claims
- 1. A disposable pricker comprising an elongate body with a lancet non-rotatably carried therein, the lancet tip normally being within the body, a spring urging the lancet in a direction to project its tip from the body, a trigger mechanism carried by the body with a portion within the body arranged to retain the lancet in a fully retracted position energizing the spring and a second portion outside the body manually actuable to release the lancet to cause the tip to have a momentary position projecting from an opening in the forward end of the body, and a cap encasing the lancet tip and having a shank traversing said opening, wherein said shank extends outwardly of said body through said opening a distance sufficient to permit said lancet to be moved against the action of said spring to said fully retracted position solely by pushing said cap further into said body through said opening, and wherein said cap is breakable free of the lancet by twisting when so retracted to leave the tip exposed within said body.
Specification