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Needleless injector

  • US 7,425,204 B2
  • Filed: 04/28/2005
  • Issued: 09/16/2008
  • Est. Priority Date: 10/26/2001
  • Status: Expired due to Fees
First Claim
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1. An injector for injecting a substance into a biological body, comprising:

  • a chamber adapted to hold the substance to be injected and an output port in fluid communication with the chamber;

    a drive element;

    a magnetic force able to cause movement of the drive element; and

    an actuator that opposes movement of the drive element and then allows the magnetic force to cause the drive element to move and thereby cause the expulsion of the substance out of the chamber through the output port.

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