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Method of controlling drug release by resonant sound wave

  • US 5,190,766 A
  • Filed: 04/12/1991
  • Issued: 03/02/1993
  • Est. Priority Date: 04/16/1990
  • Status: Expired due to Term
First Claim
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1. A method of controlling a release of a drug from a drug carrier or drug holding structure comprising the steps of:

  • measuring the acoustic characteristics of a drug carrier or drug holding structure in the region in which a drug is to be released in order to calculate the resonance frequency of said drug carrier or drug holding structure and irradiating said drug carrier or drug holding structure having a sharp acoustic resonance with a sound wave having a frequency including the resonance frequency of said drug carrier or drug holding structure in said region thereby controlling the release of said drug from said drug carrier or drug holding structure.

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