Laser plasma modulator system for endoscopy and endocavitary surgery

摘要

An improved system for safe and efficient generation of plasmas and vapors bubbles with continuous wave radiations and low levels of power densities, sufficient to treat medical pathologies and to avoid the creation damage to healthy tissue is provided. Transmission means in different configurations are used to achieve a high absorption in water, which is able to initiate plasma with low levels of power density. Once plasma and vapor bubbles are formed, they absorb other wavelengths in addition to the one that initiated it. Other wavelengths, more efficiently generated by diodes or diode pumped lasers, are added into the beam to improve treatment efficiency. This modulated plasma produces fast tissue ablation and good hemostasis effect with minimal overheating of remaining tissue. After plasma and high-energy vapors are generated, only laser radiation that passes through the plasma bubble directly interacts with soft tissues.

主权项

1. A plasma modulator laser system for endoscopy and endocavitary treatment comprising:
a first laser source operating in continuous mode and emitting a first continuous wave laser wavelength that is highly absorbed by water, generating a plasma bubble; a second laser source delivering a second laser wavelength modulating dimensions and internal temperature of the plasma by absorbing a portion of radiation at the second laser wavelength in the plasma bubble; another portion of the radiation at the second laser wavelength propagating through the plasma bubble; at least one waveguide optically coupled to the first and second laser sources; wherein the first continuous wave laser wavelength and the second laser wavelength are combined in a predetermined ratio, the predetermined ratio selected for modulation of the plasma bubble.