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Method and device for generating shock waves for medical therapy, particularly for electro-hydraulic lithotripsy

DC
  • US 6,113,560 A
  • Filed: 05/27/1997
  • Issued: 09/05/2000
  • Est. Priority Date: 09/21/1994
  • Status: Expired due to Term
First Claim
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1. Method for producing shock waves by spark discharge between electrodes which are supplied with electrical current intermittent in a liquid medium, the shock waves being focused onto an object located in a body, for medical treatment, in particular for electrohydraulic lithotripsy, the method comprising the steps of:

  • introducing non-dissolving particles into the liquid medium;

    inserting said particles between the electrodes and holding them there to effectively increase the critical electrode separation distance required for spark discharge; and

    wherein the liquid medium is water.

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