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Blood sampling device

  • US 20080009806A1
  • Filed: 07/10/2006
  • Published: 01/10/2008
  • Est. Priority Date: 07/10/2006
  • Status: Abandoned Application
First Claim
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1. A blood sampling device comprisinga barrel being hollow and comprisingan inner surface;

  • a front end being closed and comprising an inner surface;

    a rear end;

    a through hole defined through the front end;

    a pipe formed on the inner surface of the front end and comprising a free end;

    at least one rib formed on the inner surface near the front end;

    an opening defined on the rear end; and

    a cap extending from the opening and comprisingan inner surface;

    a circumference; and

    at least one protrusion formed along the circumference and on the inner surface;

    an inner tube mounted in the barrel and comprisinga front end;

    a rear end;

    an inner surface; and

    an annular flange radially protruding on the front end and comprising a bottom abutting with the at least one rib;

    a base being cylindrical, mounted in the inner tube, and comprisinga center;

    an outer circumference;

    an axis;

    an upper portion;

    an lower portion;

    a center through hole defined in the center of the base;

    at least one tab protruding on the outer circumference; and

    multiple flexible tabs extending from the lower portion and selectively abutting with the annular flange; and

    a spring mounted around the upper portion of the base and comprisingtwo ends, wherein one end abuts against the inner surface of the front end of the barrel and the other end abuts against the tab of the base;

    a needle hub mounted in the base and comprisingan inner needle passing through the center through hole of the base; and

    an outer needle passing through the through hole of the barrel.

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