Lancing device
First Claim
1. A lancing device comprising:
- (a) a lancet, said lancet having a sharpened tip, and(b) a torsion spring coupled to said lancet said torsion spring comprising,(i) a closed inner ring,(ii) a closed middle ring concentrically configured around said inner ring,(iii) a closed outer ring concentrically configured around said middle ring,(iv) a first spring arm connecting said middle ring to said outer ring, and (v) a second spring arm connecting said inner ring to said middle ring,wherein each of said first and second spring arms is independently transformable between an energized state and a de-energized state.
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Accused Products
Abstract
A lancing device is adapted for use in firing a lancet into the skin of a patient to acquire a blood sample and, subsequent thereto, calculating and displaying the concentration of glucose in the acquired sample. In one embodiment, the device comprises a lancet and a torsion spring coupled to the lancet through a lancet holder. The torsion spring includes inner, middle and outer rings which are concentrically configured, a plurality of activation spring arms which connect the middle and outer rings and a plurality of return spring arms which connect the inner and middle rings. In use, the plurality of activation and return spring arms can be independently transformed between energized and de-energized states using a single, button-shaped mechanism. Rotation of the mechanism is used to energize the activation and return spring arms. With the return spring arms maintained in their energized state, depression of the mechanism transforms the activation spring arms from their energized state to their de-energized state which drives the lancet from a retracted position to an extended position. Once the activation spring arms reach their de-energized state, the return spring arms transform from their energized state to their de-energized state which pulls the lancet back from its extended position to its retracted position.
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Citations
39 Claims
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1. A lancing device comprising:
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(a) a lancet, said lancet having a sharpened tip, and (b) a torsion spring coupled to said lancet said torsion spring comprising, (i) a closed inner ring, (ii) a closed middle ring concentrically configured around said inner ring, (iii) a closed outer ring concentrically configured around said middle ring, (iv) a first spring arm connecting said middle ring to said outer ring, and (v) a second spring arm connecting said inner ring to said middle ring, wherein each of said first and second spring arms is independently transformable between an energized state and a de-energized state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A lancing device comprising:
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(a) a lancet, said lancet having a sharpened tip, and (b) a torsion spring coupled to said lancet said torsion spring comprising, (i) a closed inner ring, (ii) a closed middle ring concentrically configured around said inner ring, (iii) a closed outer ring concentrically configured around said middle ring, (iv) a first spring arm connecting said middle ring to said outer ring, and (v) a second spring arm connecting said inner ring to said middle ring, wherein, with said second spring arm maintained in its energized state, transformation of said first spring arm from its energized state to its de-energized state serves to drive said lancet from its retracted position to its extended position. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A lancing device comprising:
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(a) a lancet, said lancet having a sharpened tip, (b) a torsion spring coupled to said lancet said torsion spring comprising, (i) a closed inner ring, (ii) a closed middle ring concentrically configured around said inner ring, (iii) a closed outer ring concentrically configured around said middle ring, (iv) a first spring arm connecting said middle ring to said outer ring, and (v) a second spring arm connecting said inner ring to said middle ring, (c) a spring holder fixedly coupled to the middle ring of said torsion spring, and (d) a ratchet for selectively engaging said spring holder. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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Specification