Blood collection system for collecting blood from a body part for diagnostic purposes
First Claim
1. A blood collection system for collecting blood from a body part for diagnostic purposes, comprising:
- a housing having a lancet guide configured to guide a lancet,a lancet drive configured to drive a puncture movement of the lancet, the puncture movement comprising a forward movement in a puncture direction, a reversal point, and a subsequent retraction movement in the direction opposite the puncture direction;
the lancet drive comprising a drive spring arranged behind the lancet, wherein during the forward movement the drive spring is connected to the lancet to drive the lancet in the puncture direction and wherein the drive spring contracts during the retraction movement, further wherein the lancet is automatically pulled back in the retraction movement by the drive spring immediately upon reaching the reversal point; and
an oscillation control device configured to control oscillation of the lancet after the lancet reaches the reversal point, wherein, at the end of the forward movement, a latch of the oscillation control device is disengaged, thereby actuating the oscillation control device, wherein the forward movement of the lancet before puncture is substantially unaffected by the oscillation control device, the oscillation control device configured to prevent repeated puncturing of the body part by the lancet.
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Accused Products
Abstract
A blood collection system for collecting blood from a body part for diagnostic purposes, comprising a housing with a lancet guide, by which a lancet is guided on a predetermined puncture path, and a lancet drive for driving a puncturing movement of the lancet on the predetermined puncture path. The puncturing movement comprises a forward movement phase in the direction of puncturing and, after reaching a reversal point, a subsequent retraction movement phase in the direction opposite the puncture direction. The lancet drive has a driving spring, which is arranged behind the lancet and is connected to the lancet during the forward movement phase of the puncturing movement so that the lancet is driven in the puncturing direction. The system comprises an oscillation control device for controlling oscillation of the lancet and the driving spring in such a manner that repeated puncturing of the body part by the lancet is prevented.
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Citations
32 Claims
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1. A blood collection system for collecting blood from a body part for diagnostic purposes, comprising:
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a housing having a lancet guide configured to guide a lancet, a lancet drive configured to drive a puncture movement of the lancet, the puncture movement comprising a forward movement in a puncture direction, a reversal point, and a subsequent retraction movement in the direction opposite the puncture direction; the lancet drive comprising a drive spring arranged behind the lancet, wherein during the forward movement the drive spring is connected to the lancet to drive the lancet in the puncture direction and wherein the drive spring contracts during the retraction movement, further wherein the lancet is automatically pulled back in the retraction movement by the drive spring immediately upon reaching the reversal point; and an oscillation control device configured to control oscillation of the lancet after the lancet reaches the reversal point, wherein, at the end of the forward movement, a latch of the oscillation control device is disengaged, thereby actuating the oscillation control device, wherein the forward movement of the lancet before puncture is substantially unaffected by the oscillation control device, the oscillation control device configured to prevent repeated puncturing of the body part by the lancet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A blood collection system for collecting blood from a body part for diagnostic purposes, comprising:
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a housing having a lancet guide configured to guide a lancet; a drive spring disposed in the housing and configured to reciprocate the lancet in a puncture movement, the puncture movement comprising a forward movement in a puncture direction, a reversal point, and a subsequent retraction movement in the direction opposite the puncture direction, wherein the drive spring contracts during the retraction movement, further wherein the lancet is automatically pulled back in the retraction movement by the drive spring immediately upon reaching the reversal point; and an oscillation control device configured to control oscillation of the lancet after puncture, the oscillation control device comprising a movable end stop wherein, at the end of the forward movement, a latch of the oscillation control device is disengaged, thereby actuating the oscillation control device, wherein the forward movement of the lancet before puncture is substantially unaffected by the oscillation control device, the oscillation control device configured to prevent repeated puncturing of the body part by the lancet. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A blood collection system for collecting blood from a body part for diagnostic purposes, comprising:
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a housing having a lancet guide configured to guide a lancet, a lancet drive configured to drive a puncture movement of the lancet, the puncture movement comprising a forward movement in a puncture direction, a reversal point, and a subsequent retraction movement in the direction opposite the puncture direction; the lancet drive comprising a drive spring arranged behind the lancet, wherein during the forward movement the drive spring is connected to the lancet to drive the lancet in the puncture direction and wherein the drive spring contracts during the retraction movement, further wherein the lancet is automatically pulled back in the retraction movement by the drive spring immediately upon reaching the reversal point; an oscillation control device configured to control oscillation of the lancet after the lancet reaches the reversal point, the oscillation control device being engaged and actuated at the end of the forward movement, wherein the forward movement of the lancet before puncture is substantially unaffected by the oscillation control device, the oscillation control device configured to prevent repeated puncturing of the body part by the lancet; wherein the oscillation control device comprises; a movable end stop which is configured to shift into a holding position after the lancet has reached the reversal point; a fixing device for securing the end stop in the holding position; and a stop spring for displacing the end stop into the holding position; wherein, during the puncturing movement of the lancet in the puncture direction, the stop spring is pre-stressed and locked, further wherein the stop spring is released at the end of the forward movement of the lancet.
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Specification