An ablation instrument (e.g., an ablation balloon catheter system) includes an elongate catheter having a housing with a window formed therein. An energy emitter is coupled to the elongate catheter and is configured to deliver ablative energy. A controller is received within the window and is coupled to the energy emitter such that axial movement of the controller within the window is translated to axial movement of the energy emitter and rotation of the controller within the window is translated into rotation of the energy emitter. The instrument includes a motor that is at least partially disposed within the housing of the catheter; a first gear that is operatively connected to and driven by the motor; and a second gear that is coupled to the energy emitter and is driven by the first gear to cause rotation of the energy emitter, while allowing the energy emitter to move axially.

A laser irradiating device preferably includes: a reflector having a receiving space formed therein; a flash lamp inserted and mounted in the reflector to generate light; a laser rod for resonating light incident from the flash lamp to emit a laser; a capacitor for storing, for a predetermined time interval, voltage to be supplied to the flash lamp; a digital variable resistor unit for outputting different voltages according to configured resistance values; a voltage increasing unit for increasing voltage input from the digital variable resistor unit and supplying the increased voltage to the capacitor; a control unit which stores resistance values corresponding to laser irradiating levels and configures a resistance value corresponding to the configured laser irradiating level; and a trigger circuit unit turned on according to a control of the user to supply a charge voltage of the capacitor to the flash lamp.

A laser system includes a first cavity to output a laser light along a first path, a first mirror to receive the laser light from the first cavity, and redirect the laser light along a second path that is different than the first path, a beam splitter removably located at a first position on the second path, a beam combiner removably located at a second position on the second path, and an alignment device having first and second alignment features. The first and second alignment features occupy the first position and the second position, respectively, on the second path, when the beam splitter and the beam combiner are removed from the first position and the second position.

Systems, devices, and methods for identifying a target in vivo are disclosed. A target identification system for use in electrosurgery includes a probe, an optical splitter, and a spectroscopy system. The probe includes an optical pathway to pass a first optical signal to an anatomical target and at least a portion of a second optical signal from the anatomical target. The optical splitter includes a first port to direct the first optical signal to the optical pathway and to receive the at least a portion of the second optical signal from the optical pathway, a second port to receive the first optical signal, and a parabolic reflector to redirect the portion of the second optical signal. The spectroscopy system can identify a characteristic of the anatomical target based on the redirected at least a portion of the second optical signal.

A pulsed laser skin treatment device is for laser induced optical breakdown of hair or skin tissue. A beam scanning system scans the beam to define a circular or arc path, using a rotated prism which implements a lateral shift to the beam. A focusing system at the output side of the beam scanning system focuses the incident light beam into a focal spot in the hair or skin tissue, and it rotates with the prism.

In a laser beam delivery system for an ophthalmic laser system, a single multi-use beam sampler is employed to form three sampled laser beams, including two for redundant laser energy monitoring and one for laser focal point depth measurement. The beam sampler is a transparent plate with preferably parallel front and back surfaces. The front surface reflects a fraction of the incoming beam to form the first sampled beam toward an energy monitoring detector. The back surface reflects another fraction of the beam to form a second sampled beam exiting backwardly from the front surface toward another energy monitoring detector. An objective lens focuses the transmitted beam onto a target, and collects back reflected or scattered light from the target to form a return beam. The back surface of the beam sampler reflects a fraction of the return beam to form the third sampled beam toward a third detector.

A method and laser surgical devices for surgical incising and ablating living tissues using laser beam and effecting enhanced surgical haemostasis concurrently with incising and ablating are disclosed. The method requires a surgical laser beam that is pulsed and is highly absorbed in living tissues and enhanced haemostatic action is achieved using along with the surgical laser beam energy, delivered in pulses, another separately controlled energy effecting haemostasis, by applying the second energy in any and every given spot of incising and ablating in a preemptive and focused manner, which minimizes haemostasis-related damage to surrounding tissues. In one embodiment a heated gas jet from a hollow core optical fiber transmitting the surgical laser beam is used. In other embodiments an ancillary laser radiation at a wavelength chosen specifically to minimize haemostasis-related damage to tissue is utilized for preemptive and controlled haemostatic effect.

The present disclosure provides systems, devices, and methods for penetrating a biological membrane. The system may comprise a laser unit configured to generate one or more laser beams. The system may comprise a set of targeting optics configured to direct the one or more laser beams to a target region of the biological membrane. The system may comprise a raster scanner operatively coupled to the laser unit and the set of targeting optics. The system may comprise a non-transitory computer readable storage medium comprising a set of instructions. The set of instructions may be configured to control at least one of the laser unit, the set of targeting optics, or the raster scanner to photodisrupt the target region of the biological membrane to a target depth while minimizing damage to one or more blood vessels in proximity to the target region.

An exemplary treatment system can be provided which can include a laser system configured to emit at least one laser beam, and an optical system configured to focus the laser beam(s) to a focal region at a selected distance from a surface of a tissue. The focal region can be configured to illuminate at least a portion of a target. The optical system can cause an irradiation energy transferred to the focal region of the laser beam(s) to (i) generate a plasma in a first region of the tissue adjacent to the target, and (ii) avoid a generation of a plasma in a second region of the tissue. The optical system has a numerical aperture that is in the range of about 0.5 to about 0.9. An exemplary method can also be provided to control such treatment system.

A light based treatment device comprises an optical arrangement at a light exit end of an optical fiber. The optical arrangement includes a master oscillator power amplifier based on a semiconductor optical laser and a crystal optical amplifier. In this way, the peak power provided along the optical fiber can be reduced to prevent damage to the optical fiber, while enabling a sufficiently high pulse power to be delivered for tissue treatment.