초록 ▼

Removal of abnormal human tissue with reduced thermal damage is achieved by selecting a laser having a wavelength in the order of 290-400 nm, orienting a laser-transmitting glass member toward the abnormal tissue and directing the laser through the glass member at power densities, pulse rates, and t

Removal of abnormal human tissue with reduced thermal damage is achieved by selecting a laser having a wavelength in the order of 290-400 nm, orienting a laser-transmitting glass member toward the abnormal tissue and directing the laser through the glass member at power densities, pulse rates, and times sufficient to cause multiphoton absorption and bond breaking by Coulomb repulsion rather than thermal destruction. The glass member may include a laser beam concentrator provided by a lens or cone at the tissue-treatment end to increase the beam energy per unit area and reduce the treatment area.

대표청구항 ▼

A method of severing a human tissue comprising the steps of providing a laser-transmitting member composed of glass, exposing at least a portion of the tissue to the laser transmitting member, and directing a laser having a wavelength of about 290-400 through the laser transmitting member to the tis

A method of severing a human tissue comprising the steps of providing a laser-transmitting member composed of glass, exposing at least a portion of the tissue to the laser transmitting member, and directing a laser having a wavelength of about 290-400 through the laser transmitting member to the tissue portion for a time and at an intensity level sufficient to penetrate the tissue and separate a tissue portion from remaining tissue.