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Puncture device

  • US 8,308,747 B2
  • Filed: 11/27/2008
  • Issued: 11/13/2012
  • Est. Priority Date: 11/27/2007
  • Status: Active Grant
First Claim
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1. A puncture device for moving a puncture element in a piercing direction toward a target site and for piercing the target site with the puncture element, the puncture device comprising:

  • a first member which is movable in the piercing direction and in an evacuating direction opposite to the piercing direction;

    a second member which is for retaining the puncture element, and which is movable in the piercing direction and in the evacuating direction; and

    a third member which is rotated as the first member moves, and is for moving the second member in the piercing direction and in the evacuating direction by a rotational motion, the puncture device further comprising;

    a piercing depth adjusting mechanism of adjusting a piercing depth of the puncture element to the target site by regulating a rotation angle of the third member,wherein the piercing depth adjusting mechanism includes an engaging part for engaging with the third member, and includes a displacement member for displacing an engaging position of the engaging part in the third member;

    the first member includes a recess with an inclination part inclined relative to the piercing direction and to the evacuating direction; and

    the engaging part engages with the first member at the recess.

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