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Particle delivery

  • US 6,013,050 A
  • Filed: 04/24/1997
  • Issued: 01/11/2000
  • Est. Priority Date: 10/20/1995
  • Status: Expired due to Term
First Claim
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1. A needleless syringe for administering particles of a therapeutic agent, said syringe comprising:

  • (a) an elongate nozzle having an upstream end;

    (b) a capsule chamber interfaced with the upstream end of the nozzle to provide a chamber/nozzle interface, said chamber having an open upstream end and an open downstream end and providing a housing for containing a nonrigid capsule;

    (c) opening means for mechanically piercing a nonrigid capsule when the capsule is arranged in the capsule chamber housing, said opening means arranged at the upstream end of the capsule chamber; and

    (d) energizing means connected to the upstream end of the capsule chamber, wherein said energizing means comprises a source of pressurized gas and can be actuated to provide a gas flow through the capsule chamber and nozzle.

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