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MULTI-FUNCTION CAPILLARY TUBE SYRINGE WITH RETRACTABLE NEEDLE FOR ARTERIAL BLOOD DRAWING

  • US 20180008182A1
  • Filed: 07/08/2016
  • Published: 01/11/2018
  • Est. Priority Date: 07/08/2016
  • Status: Abandoned Application
First Claim
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1. A capillary tube syringe comprising:

  • an elongated hollow outer tube having a proximal end and a distal end;

    a needle extending from the proximal end of the outer tube outside the outer tube and extending inside the outer tube;

    an elongated hollow capillary tube having a proximal end and a distal end and extending along the inside of the outer tube; and

    a spring operatively connected to the needle wherein the spring is normally compressed and configured to expand when activated to retract the needle inside the elongated hollow tube.

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