US 10,456,070 B2 · Apparatus for obtaining and analyzing a blood sample with a lancet coupling mechanism

Abstract

An apparatus for obtaining and analyzing a blood sample is presented. The apparatus comprises an integrated drive unit having a common drive source and a drive force transmission gearing that couples a lancet drive, a device for advancing a magazine, and a sample transfer device to the drive source. A tensioning rotor and a drive rotor are mounted so that they are rotatable coaxially to one another. A first cam control converts the rotation of the drive rotor into a radial forward and reverse movement of a drive rod. A second cam control converts the rotational movement of the tensioning rotor into a linear movement of a link slide. A switching link moved by the link slide rotates the magazine an additional step. A third cam control converts the rotational movement of the tensioning rotor into a linear movement of a pressure tappet perpendicular to the piercing axis.

Claims20

Dependent claims

A lancet coupling mechanism for an apparatus for obtaining and analyzing a blood sample, comprising:

a lancet having an eye;
at least one chamber, which extends in a direction of a piercing axis, wherein the chamber contains the lancet;
a drive rod, which penetrates into the chamber for coupling onto the lancet, in order to execute a controlled forward and reverse movement of the lancet along the piercing axis, wherein the drive rod has at least one hook;
at least one bending axis of the lancet that extends transverse to the piercing axis;
wherein the lancet is elastically bendable from a relaxed state to a bent state around the bending axis;
wherein at least in a rear area of the chamber comprises a shaft that has at least one curvature that curves around the bending axis;
wherein the shaft guides the controlled forward and reverse movement of the lancet;
wherein the curvature at the rear area of the chamber is configured to bend the lancet from the relaxed state to the bent state;
and
wherein the drive rod is configured to push the lancet out of the curvature at the rear area of the chamber to hook the hook of the drive rod into the eye of the lancet.

7 more elements

A lancet coupling mechanism for an apparatus for obtaining and analyzing a blood sample, comprising:

a lancet having a sharp tip configured to pierce a body part and a rear end located opposite the sharp tip;
at least one chamber, which extends in a direction of a piercing axis, wherein the chamber contains the lancet;
a drive rod, which penetrates into the chamber for coupling onto the lancet, in order to execute a controlled forward and reverse movement of the lancet along the piercing axis;
at least one bending axis of the lancet that extends transverse to the piercing axis;
wherein the lancet is elastically bendable from a relaxed state to a bent state around the bending axis;
wherein at least in a rear area of the chamber comprises a shaft that has at least one curvature that curves around the bending axis;
wherein the shaft guides the controlled forward and reverse movement of the lancet;
wherein the curvature at the rear area of the chamber is configured to bend the rear end of the lancet from the relaxed state to the bent state;
and
the drive rod is configured to engage the bent rear end onto the lancet when the lancet is in the bent state, and the drive rod has a formfitting connection to the lancet when the lancet is in the relaxed state.

7 more elements

Dependencies are inferred from the claim text.

Apparatus for obtaining and analyzing a blood sample with a lancet coupling mechanism

Life of this patent

Apparatus for obtaining and analyzing a blood sample with a lancet coupling mechanism

Life of this patent

Abstract

Claims20