| 摘要 |
A single-use disposable lancing apparatus configured to extend and rapidly retract a lancet needle for reduced pain in taking body fluid samples, such as blood samples from skin. Embodiments include use of differential pressure, pneumatics, partial vacuum, compressed gas or fluid to actuate the lancet needle. Variations include the use of relatively increased pressure in an anterior chamber, relatively decreased pressure in a posterior chamber, or both. Additional optional springs may be used to supplement the pressure driven actuation of the lancing apparatus.
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