Disposable single-swing-arm incision safety lancet

Details Disposable single-swing-arm incision safety lancet Disposable single-swing-arm incision safety lancet

2011-07-19

2011-07-19

McDermott, Corrine M (Department: 3731)

Surgery

Instruments

Cutting, puncturing or piercing

C606S185000

Reexamination Certificate

active

07981131

ABSTRACT:
A disposable single-swing-arm incision safety lancet is provided, which includes a casing (2) and a trigger. It is characterized in that the casing (2) is provided inside with an incision blood-taking mechanism composed of a cam (3), a swing arm (4), a blade (1) and a spring (8). In the incision blood-taking mechanism of the present invention, the cam, being driven to rotate under elastic force of the spring, pushes via the curved surface against the swing arm, which thus swings with the third radius R3as the radius. The point of the blade1is swingingly stretched out of the casing2from the blood-taking opening5along the arc-shaped path A, thus producing the incising action. The present invention is novel in structure, clever in concept, and reliable in working. Since the movement of the incision blood-taking mechanism is controlled by the spring, the action strength can be controlled through the design of elastic force of the spring. Therefore, the mechanism possesses higher accuracy and controllability compared with the prior art, resolving the existing technical problems on this aspect.

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patent: 7704265 (2010-04-01), Schraga

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