Electronic lancing device
US6364889B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 1999 |
| Grant date | Apr 2, 2002 |
| Priority date | — |
| Expiry date | Nov 17, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/15123
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
It has been discovered that the use of a substantially free-standing voice coil within a lancing device in coordination and combination with a stationary magnet and electronic circuit renders a much improved lancing device. The minimal weight of the free standing voice coil and the attractive forces of the magnet allow the battery-powered electronic circuit to maintain excellent control over the advancement and retraction of a lancet. When the electronic lancing device is initiated by a user, the voltage source within the electronic lancing device provides sufficient current through the voice coil such that the coil and lancet are repulsed from the magnet and propelled into the puncture site. The voltage source subsequently reverses the current through the voice coil to supply sufficient attractive current through the voice coil such that the dwell time of the lancet is minimized and the lancet is retracted from the puncture site and pulled toward the magnet within the housing of the electronic lancing device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.