Patent ID: 6129721
Filing Date: 2000-10-10
Classification: A61B,A61C,A61N,G02B

Abstract:
A medical laser treatment device comprising:a handpiece having a handpiece body and a laser probe to be attached to a tip end of the handpiece body;a laser light source for generating laser light;a fluid source for supplying a fluid;a light transmission member for guiding the laser light emitted from the laser light source to the handpiece; anda fluid supply passage through which the fluid is supplied from the fluid source to the handpiece body, and whereinthe laser probe includes a fiber probe having an emission face through which the laser light from the light transmission member is emitted to an irradiation region, an annular protection tube for covering a peripheral face of the fiber probe, and a holder for holding the fiber probe and the protection tube, which holder is attached to the tip end of the handpiece body,between the fiber probe of the laser probe and the protection tube is defined in annular fluid passage space, through which the fluid supplied through the fluid supply passage is sprayed,the protection tube has a curved part which bends and extends with respect to an axis of the handpiece body, and the fiber probe has a first fiber curve part extending along the curved part which is formed by inserting the fiber probe into the protection tube to pass therethrough,a tip end portion of the fiber probe projects outwardly from a tip end of the protection tube, which tip end portion has a second fiber curved part disposed in the projecting tip end portion so that the emission face is directed laterally with respect to an axial direction of the tip end portiona radius of curvature (R1) of the first fiber curved part is greater than a radius of curvature (R2) of the second curved fiber part (R1>R2), andthe fiber probe is constituted by a multifiber composed of a plurality of optical fibers each having a core and a clad which covers the core.