Skin cutter for painless extraction of small blood amounts
First Claim
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1. A device for obtaining small blood samples from humans or animals in an almost pain-free manner, the device comprising:
- a blade having a cutting edge with a length of less than 10 mm; and
an oscillator means for making the blade oscillate at a frequency along an axis that is substantially parallel to the cutting edge.
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Abstract
Cutting device for skin obtaining small blood samples from human or animal tissue in an almost pain-free manner. A blade (13) is made to oscillate by an oscillator (14, 32) and is lowered into the tissue and again retracted at a relatively slow speed. In a first embodiment, the blade oscillates essentially parallel to the cutting edge of the blade and the tissue surface. In a second embodiment, the blade oscillates essentially perpendicular to the tissue surface. An advantage of the device of the reduced pain during pricking.
220 Citations
31 Claims
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1. A device for obtaining small blood samples from humans or animals in an almost pain-free manner, the device comprising:
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a blade having a cutting edge with a length of less than 10 mm; and an oscillator means for making the blade oscillate at a frequency along an axis that is substantially parallel to the cutting edge. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A method of cutting skin tissue for obtaining blood samples of less than 50 μ
- l from humans or animals in an almost pain-free manner, the method comprising the steps of;
providing a blade having a cutting edge of less than 10 mm in length and oscillating the blade at an oscillation frequency in at least one direction which is substantially parallel to the cutting edge; moving the oscillating blade perpendicularly toward and into tissue to be cut open; and thereafter retracting the blade from the tissue. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31)
- l from humans or animals in an almost pain-free manner, the method comprising the steps of;
Specification