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Laser spectro-optic imaging for diagnosis and treatment of diseased tissue

  • US 5,104,392 A
  • Filed: 10/11/1989
  • Issued: 04/14/1992
  • Est. Priority Date: 03/22/1985
  • Status: Expired due to Fees
First Claim
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1. The method of destroying atheromatous plaque within an artery of a patient comprising the steps of initially administering to the patient a non-toxic atheroma-enhancing reagent which causes the plaque to have a characteristic optical property when illuminated with a given radiation, introducing a catheter system including fiberoptic cable means into the artery such that the distal end thereof is operatively opposite the plaque site, introducing into the proximal end of said fiberoptic cable means said given radiation, photoelectrically sensing at said proximal end said characteristic optical property to generate a control signal and under the control of said control signal transmitting via said cable means from said proximal end to said distal end, laser energy until said characteristic optical property is no longer sensed.

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