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PROTECTING MECHANISM FOR BLOOD SAMPLING DEVICE

  • US 20150272491A1
  • Filed: 02/16/2015
  • Published: 10/01/2015
  • Est. Priority Date: 03/27/2014
  • Status: Active Grant
First Claim
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1. A protecting mechanism for a blood sampling device comprising:

  • a trigger unit including a lancet holder, a triggering shaft, and a resilient element;

    the lancet holder having a launching portion and a first outer protrusion opposite to the launching portion, the lancet holder also having a through orifice defined therein and a first inner shoulder defined on a top end of the through orifice, wherein a bottom end of the triggering shaft moves in the through hole, and the triggering shaft has a first outer shoulder arranged on an outer wall thereof to engage with the first inner shoulder of lancet holder, the resilient element is fitted with the triggering shaft and abuts against the lancet holder by ways of its bottom end; and

    a switching assembly including a fixing jacket, a rotating tube, and a driving sheath;

    the fixing jacket being fitted with the lancet holder and having an abutting portion, the rotating tube being rotatably fitted with the fixing jacket between a starting position and a retracting position, and the rotating tube having a first inner protrusion arranged on an inner wall thereof and having two opposite second inner protrusions formed on the inner wall thereof, the driving sheath being fitted on a top end of the triggering shaft and contacting with a top end of the resilient element, and the driving sheath having two stopping sets arranged on an outer wall thereof, wherein each stopping set has two second outer protrusions.

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