Disposable slicing lancet assembly
US5314441A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 16, 1992 |
| Grant date | May 24, 1994 |
| Priority date | — |
| Expiry date | Oct 16, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/15144
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A lancet device uses a planar blade that implements an incision in the skin of a patient using a slicing action. There is a blade support arm pivotably secured within a hollow housing. The pivot connection between the blade support arm and the housing is formed by a pivot pin which extends from the housing and is positioned in a slot receptacle formed on the blade support arm. The pivot pin is free to reciprocally move within the slot receptacle as the blade support arm pivot about the pivot pin. The rotation of the blade support arm about the pivot pin is implemented by a bias spring. The path traversed by the blade support arm as it pivots is controlled by a groove located on the interior surface of the housing which engages a projection that extends from the blade support arm. As such, when the support arm pivots from a first position to a second position, the projection on the blade support arm traverses the groove in the housing. The action of the projection of the blade support arm following the groove in the housing causes the slot receptacle on the blade support arm to reciprocate. Consequently, the blade is caused to reciprocate within the housing as it rotates with the bl…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.