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SYRINGE

  • US 20180056003A1
  • Filed: 09/01/2017
  • Published: 03/01/2018
  • Est. Priority Date: 09/17/2010
  • Status: Active Grant
First Claim
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1. A syringe for injecting an injection objective substance into an injection target area of a living body without using any injection needle, the syringe comprising:

  • an enclosing unit which encloses the injection objective substance;

    a pressurizing unit which pressurizes the injection objective substance enclosed in the enclosing unit; and

    a flow passage unit which defines a flow passage so that the injection objective substance, which is pressurized by the pressurizing unit, is allowed to inject to the injection target area,wherein the pressurizing unit has two pressurizing modes including;

    a first pressurizing mode in which a pressure applied to the injection objective substance in the pressurizing unit is raised to a first peak pressure in order to allow the injection objective substance to penetrate through a surface of the injection target area, and then the pressure applied to the injection objective substance is lowered to a waiting pressure; and

    a second pressurizing mode in which the injection objective substance having the waiting pressure is pressurized so that the pressure applied to the injection objective substance is raised to a second peak pressure to inject a predetermined injection amount of the injection objective substance,wherein a rate of the waiting pressure to the first peak pressure in the first pressurizing mode is not more than 50%.

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