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In situ photodynamic therapy

  • US 5,257,970 A
  • Filed: 04/09/1992
  • Issued: 11/02/1993
  • Est. Priority Date: 04/09/1992
  • Status: Expired due to Term
First Claim
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1. In the process of photodynamic therapy, the improvement comprising:

  • 1) separately encapsulating at least two activation components for said photodynamic therapy process in a liposome;

    2) injecting a photosensitizer into a human or animal host;

    3) injecting the liposome encapsulated components systemically into the same human or animal host; and

    4) heating the site of the tumor to melt the liposome encapsulated components to permit mixing of the activation components.

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