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Method for detecting coagulation in laser treatment of blood vessels

  • US 6,766,187 B1
  • Filed: 09/18/2000
  • Issued: 07/20/2004
  • Est. Priority Date: 09/18/2000
  • Status: Expired due to Fees
First Claim
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1. A method of detecting onset of coagulation of blood in a blood vessel induced by irradiation of electromagnetic radiation, said electromagnetic radiation having a first wavelength, the method comprising the steps of:

  • (a) directing electromagnetic radiation having a second wavelength at the blood vessel, said second wavelength being different from said first wavelength;

    (b) monitoring a portion of said second wavelength radiation remitted from the blood vessel; and

    (c) interpreting one of an increase and decrease in said monitored remitted second wavelength radiation as an indication of the onset of coagulation of blood in the blood vessel.

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