Low cost safety lancet
US7955347B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 24, 2005 |
| Grant date | Jun 7, 2011 |
| Priority date | — |
| Expiry date | Jun 11, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/1513
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A lancing device has a housing, an activation/retraction control assembly, and a lancet. The control assembly and the housing have cooperating engagement structures such as detents that disengage after a predetermined launch force is applied to the control assembly. In this way, the lancet is driven to its puncturing position without the use of a drive spring. In addition, the control assembly and the lancet have cooperating releasable engagement structures such as notched sections and tamped protrusions that disengage when the lancet reaches its puncturing position, thereby freeing the lancet from the control assembly. And the control assembly has angled retraction structures that engage the freed lancet to bias it back safely into the housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.