Patent ID: 7815632

Claim:
A laser induced liquid jet generating device comprising: a main body possessing a lumen therein, wherein the main body comprises: an connector disposed to communicate with the lumen of said main body, and intended to fit an optical fiber furnished with a laser irradiating part for allowing introduction of a laser beam from a laser oscillator into the lumen, a liquid injecting member for injecting into the lumen of said main body a liquid capable of absorbing said laser beam, a jet generating tube unit configured to combine radiation emitted from the laser irradiating part of the optical fiber with the liquid ejected out of the liquid injecting member to generate jet streams of said liquid; a catheter mounting unit mounted integrally or in a removable manner on a catheter member into which said jet stream is introduced; and a heat transfer inhibition means for inhibiting thermal effect due to laser beams emitted by said laser irradiating part from being transferred outside of said jet generating tube unit, wherein said heat transfer inhibition means is configured to surround the laser irradiating part of said optical fiber.