Laser induced liquid jet generating apparatus
AssigneeTerumo Kabushiki Kaisha
InventorsKazuyoshi Takayama, Takayuki Hirano, Atsuhiro Nakagawa, Hideshi Obitsu, Shigeru Omori, Takeshi Kanamaru
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Abstract
The laser induced liquid jet generating apparatus irradiates a laser beam on a liquid in a main body, guides the generated liquid jet into a catheter via a nozzle, and generates a flow in the direction opposite the liquid jet. Even by the use of a catheter having a small outside diameter, therefore, the apparatus is enabled to effect powerful laser irradiation without being thermally affected by the laser beam and consequently shatter thrombus, for example, and recover by aspiration the shattered thrombus through the distal end of the catheter.
Claims16
A laser induced liquid jet generating apparatus comprising:
- a main body possessing a spatial part therein,
- an optical fiber fitting part disposed to communicate with the spatial part 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 spatial part,
- a liquid injecting part for injecting into the spatial part of said main body a prescribed liquid capable of absorbing said laser beam, and
- a nozzle disposed at said main body for spouting a liquid jet generated when the liquid is irradiated by said laser beam emitted from the laser irradiating part toward said liquid to the exterior of said main body, and
- a catheter communicating with the nozzle, the nozzle guiding the liquid jet generated in the spatial part of said main body into a proximal end portion of the catheter.
A laser induced liquid jet generating apparatus comprising:
- a main body having a spatial part formed in an interior thereof,
- a liquid discharging part communicating with the spatial part of said main body for discharging a liquid in said spatial part,
- a nozzle disposed in a distal end portion of said main body and adapted to spout the liquid in said spatial part to the exterior of said main body, and
- a connecting part disposed in a proximal end portion of said main body, furnished with an opening part communicating with said spatial part, and furnished with an optical fiber fitting part and a liquid injecting part, wherein
- the liquid injected from the liquid injecting part of said connecting part is guided into said spatial part of said main body through the medium of said opening part,
- a liquid jet generated by irradiating the liquid with a laser beam emitted from an optical fiber attached to said optical fiber fitting part toward the liquid in said spatial part is guided into a proximal end portion of a catheter connected to said nozzle, and the liquid jet is spurt to a distal end portion of said catheter.
Dependencies are inferred from the claim text.