Patent ID: 8672963
Filing Date: 2014-03-18
Classification: A61B

Abstract:
1. A lancet device, by which a lancet can be displaced along a piercing path to generate a piercing wound in a skin surface, in particular to obtain bodily fluid for diagnostic purposes, comprising: a lancet; a lancet drive having drive means for generating a drive force for a piercing movement of the lancet along the piercing path in the direction toward the skin surface, the lancet drive comprises a first magnet, by which a magnetic retention force directed opposite to the drive force may be generated, the lancet drive also comprises triggering means, by which the retention force may be reduced enough that the lancet is accelerated in the direction toward the skin surface under the effect of the drive force generated by the drive means, the drive means comprises a second magnet which is situated with opposite polarity to the first magnet generating the retention force, wherein the second magnet is a permanent magnet, wherein the triggering means comprise a coil, by which a magnetic field may be generated, which at least partially, compensates for the retention force of the first magnet, and wherein the first and second magnets are magnetic rings, wherein the coil is situated inside the first and second magnets in a fixed position relative to the first and second magnets, and wherein the lancet drive includes a drive element in the form of a soft-magnetic coil core.