Disclosed is a device for interstitial laser therapy. The device comprises an optical waveguide extending about a central longitudinal axis and having an optical output end; an optical diffuser optically coupled to, optically associate with, or positioned about the optical output end, wherein the optical diffuser comprises a housing having an open end for receiving the optical output end and a first longitudinal portion of the optical waveguide; and a temperature sensor interposed, positioned or located between the central longitudinal axis and an exterior surface of the housing, and preferably within the longitudinal extent of the first longitudinal portion of the optical waveguide. The optical diffuser can be provided with one or more holes, one or more slits, one or more openings, and/or one or more vents. The device can also include a second temperature sensor. Also disclosed is a system for interstitial laser therapy.

A laser with a wide continuous wavelength tuning range is desirable for optimized selective photothermolysis (SP) laser surgeries that treat light-absorptive lesions and unwanted pigments in human tissue with minimal collateral damages. However, current SP laser surgical systems are limited to a few lasing lines including 1064 nm by Nd:YAG, 755 nm by Alexandrite, 694 nm by Ruby, and 532 nm by second harmonic generation of 1064 nm. This invention discloses techniques to implement a high power, tunable optical parametric oscillator (OPO) system for demanding SP applications such as laser tattoo removal. In addition to wavelength tuning, the OPO laser system's output pulse energy, pulse duration, and pulse-train duration are also adjustable by tuning the pump laser pulse energy, pump laser pulse duration, and pump laser pulse-train duration for optimizing SP laser surgical outcomes.

Devices and method introduce micro-modifications into an optical waveguides. The devices comprise and the methods utilize a focusing optical unit for focusing a laser pulses into a core region of the optical waveguide, at least one motor-driven adjustment device for carrying out a linear movement between the optical waveguide and a focus of the focused laser beam pulse, a holder for the optical waveguide, and a rotation device for rotating the optical waveguide, wherein the at least one motor-driven adjustment device is configured for moving the focal position through the optical waveguide, while the rotation device is configured to modify a rotational speed of the optical waveguide.

Disclosed is a system provided with a vibration device and cooling fluid for interstitial laser therapy. Use of the vibration device to vibrate at least part of the system releases and assists in the transfer of gas bubbles (e.g. steam) produced during treatment use, thus stabilising the temperature at or near a treatment site. The system for interstitial laser therapy includes an optical waveguide having an optical output end and an associated optical diffuser, an irrigation tube, an outer tube (e.g. cannula) and a vibration device. The irrigation tube directs cooling fluid to flow out of a distal end of the irrigation tube which directs cooling fluid to flow inside of and/or outside of the optical diffuser. The vibration device is used to vibrate the irrigation tube, the optical diffuser and/or the outer tube.

[Object] To provide an ablation system capable of suppressing heat damages to the lumen intima.

[Solution] An ablation system 10 has an ablation device 11 in which a balloon 21 is provided on the distal end side of a shaft 22 and an in-side tube 27 causing a fluid to flow into the balloon 21, the internal space of the shaft 22 causing a fluid to flow out of the balloon 21, and an optical fiber 29 guiding laser light into the balloon 21 are individually provided along the shaft 22, a laser light generating unit 12 emitting laser light to the optical fiber 29, and a fluid returning unit 13 returning a fluid into the internal space of the balloon 21. The ablation device 11 has a reflector 33 reflecting laser light emitted from the optical fiber 29 in the balloon 21, in which the reflector 33 is movable along the axial direction 191 in the balloon 21 and is rotatable in the axial direction 101 as the axis line.

A system includes a laser source coupled to an optical waveguide which has a laser output portion, and a vaginal housing transparent to laser energy which is emitted by the laser source and which exits the laser output portion, wherein the optical waveguide is movable along a path inside the vaginal housing.

An optical imaging system for an ophthalmic laser beam delivery system, which includes a focusing objective including a plurality of lenses, a semi-transparent folding mirror disposed near an entrance of the focusing objective for reflecting a treatment laser beam into the focusing objective, a prism disposed adjacent a back surface of the folding mirror, the prism having a first, a second and a third surface, the second surface being disposed adjacent the back surface of the folding mirror, the prism being configured to reflect a light that has entered the second surface sequentially by the first surface and by the second surface toward the third surface to be output, a focusing lens module disposed adjacent the third surface of the prism to focus light output from the third surface of the prism, and an image sensor disposed to receive the light focused by the focusing lens module to form an image.

A medical instrument includes a housing and a shaft coupled to the housing. The shaft has a proximal end and a distal end. An end effector assembly is disposed at the distal end of the shaft. The end effector assembly includes first and second jaw members. At least one of the first and second jaw members is movable from a first position wherein the first and second jaw members are disposed in spaced relation relative to one another to at least a second position closer to one another wherein the first and second jaw members cooperate to grasp tissue therebetween. The medical instrument also includes one or more light-emitting elements and one or more light-detecting elements configured to generate one or more signals indicative of tissue reflectance. The one or more light-emitting elements are adapted to deliver light energy to tissue grasped between the first and second jaw members.

A balloon catheter system includes: a light irradiation probe including, at a distal end portion of a fiber probe, a light irradiation portion for irradiating light; a balloon catheter including a shaft having a through hole through which the light irradiation probe is insertable, the through hole allowing liquid feeding, with the light irradiation probe being arranged, and a balloon provided to the shaft and configured to be expandable and contractable by a liquid injected into the balloon; and an injection apparatus including a measuring portion capable of measuring a quantity of the liquid, and an injection portion for injecting the liquid measured by the measuring portion into the balloon, and the balloon expands by the injected liquid, to thereby extend a wall of a region to be treated and retain the wall of the region to be treated in an extended state.

A light-diverting catheter tip is provided according to embodiments disclosed herein. The light-diverting catheter tip may be coupled with the distal tip of a laser catheter and divert at least a portion of the light exiting the distal tip of the laser catheter such that the spot size of the laser beam on an object after exiting the catheter tip is larger than the spot size of the light entering the catheter without the catheter tip. The catheter tip may be removably coupled with the catheter or constructed as part of the catheter. In other embodiment, the catheter tip may conduct fluid and/or divert fluid at the tip of the laser catheter.