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Therapeutic delivery systems

  • US 6,443,898 B1
  • Filed: 06/07/1995
  • Issued: 09/03/2002
  • Est. Priority Date: 12/22/1989
  • Status: Expired due to Term
First Claim
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1. A method for the controlled delivery of therapeutic compounds to a region of a patient comprising:

  • (i) administering to the patient temperature activated gaseous precursor-filled microspheres comprising a therapeutic compound;

    (ii) monitoring the microspheres using energy to determine the liquid to gas phase transition and the presence of the microspheres in the region; and

    (iii) rupturing the microspheres using energy to release the therapeutic compound in the region.

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