Disposable single-swing-arm incision safety lancet
US7981131B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Oct 22, 2008 |
| Grant date | Jul 19, 2011 |
| Priority date | — |
| Expiry date | Dec 16, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/15128
- WIPO fieldMedical technology
- WIPO sectorInstruments
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 R3 as the radius. The point of the blade 1 is swingingly stretched out of the casing 2 from the blood-taking opening 5 along 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.