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PIERCING INSTRUMENT AND PIERCING NEEDLE CARTRIDGE

  • US 20090163944A1
  • Filed: 05/10/2007
  • Published: 06/25/2009
  • Est. Priority Date: 05/10/2006
  • Status: Abandoned Application
First Claim
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1. A puncture needle cartridge comprising:

  • a lancet that comprises a lancet body that has a puncture needle at one end and a grip part to be held by a puncture device body at the other end, a protection cap that protects the puncture needle, and a connecting part that connects the lancet body and the protection cap separably; and

    a puncture needle holder that holds the lancet movably and is attached to the puncture device body, wherein;

    a first convex part or concave part is formed in the protection cap and a second convex part or concave part is formed in the puncture needle holder;

    when the protection cap does not rotate predetermined degrees with respect to an axis of the lancet body, the first convex part or concave part and the second convex part or concave part are engaged to restrict movement of the protection cap in an axial direction of the lancet body; and

    when the protection cap rotates the predetermined degrees with respect to the axis of the lancet body, the first convex part or concave part and the second convex part or concave part are disengaged to allow the movement of the protection cap in the axial direction of the lancet body.

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