A device configured to cut hair using laser light includes a handle portion and a shaving portion. The handle portion includes a battery and a laser light source. The laser light source is coupled to and configured to receive power from the battery. The laser light source is also configured to generate laser light having a wavelength selected to target a predetermined chromophore to effectively cut a hair shaft. The shaving portion includes a support and a single fiber optic supported by the support. The fiber optic has a proximal end, a distal end, an outer wall, and a cutting region positioned towards the distal end and extending along a portion of the side wall. The fiber optic is positioned to receive the laser light from the laser light source at the proximal end, conduct the laser light from the proximal end toward the distal end, and emit the light out of the cutting region and toward hair when the cutting region is brought in contact with the hair.

A light irradiating medical device 1 includes a catheter shaft 2 extending in a longitudinal direction; a balloon 5 disposed at a distal portion of the catheter shaft 2; a light guiding tool 10 disposed in a lumen of the catheter shaft 2 and movable in the longitudinal direction, the light guiding tool 10 including an optical fiber 11 extending in the longitudinal direction and a tubular member 15 covering the optical fiber 11 and having light transparency, the optical fiber 11 including a core 12, a cladding 13 and a cladding absent portion 14 disposed at a part of a distal portion of the core 12; a first radiopaque marker 21 disposed at the distal portion of the catheter shaft 2; and a second radiopaque marker 22 disposed at the tubular member 15 at a position distal to a distal end 12a of the core 12.

A method of irradiating a wound that includes positioning a wound insertion foam within a wound cavity of a wound and covering the wound insertion foam using a wound sealing layer. The method further includes pumping fluid from the wound cavity using a drain tube sealed within the wound cavity and coupled to a vacuum source, and irradiating the wound using a light diffusing optical fiber that is optically coupled to a therapeutic light source and includes light scattering structures distributed along the light diffusing optical fiber. A portion of the light diffusing optical fiber is positioned within a wound tissue region of the wound, the wound cavity, or both, such that light emitted by the therapeutic light source enters the light diffusing optical fiber, scatters outward from the light diffusing optical fiber, and irradiates the wound tissue region, a wound cavity surface of the wound, or both.

In some embodiments, an apparatus includes a catheter having a catheter body, a light emitter disposed at a distal end of the catheter body, and a fluid conduit coupleable to a source of fluid. The fluid conduit configured to discharge fluid from the source via the conduit and out a distal end of the catheter body. A spacing member is disposed at the distal end of the catheter body and can be moved between a collapsed configuration and an expanded configuration. In the expanded configuration, the spacing member is disposed about the light emitter. The spacing member is at least partially transmissive and/or transflective of light emitted from the light emitter. The apparatus configured to be inserted at least partially into a body lumen, to discharge fluid into the body lumen, and to emit light from the light emitter to illuminate an interior wall of the body lumen.

The present disclosure relates to a fiber and a laser probe assembly with a probe tip that houses the fiber. In certain aspects, the fiber includes a core, an outer cladding surrounding the core, and an end face at a proximal and/or distal end of the fiber. The core is configured to transmit a laser light beam while the core and the outer cladding are both configured to transmit an illumination light. In certain aspects, a surface area of the end face corresponding to a cross-section of at least the outer cladding is treated with a roughening or polishing process to modulate an illumination light output angle of the fiber. Using a fiber that is configured to transmit a laser light beam as well as a wide-angle illumination light allows for a more compact fiber and probe tip, allowing for medical procedures that require a narrower probe.

Apparatus and methods for segmental treatment of hollow anatomical structures using an optical fiber are disclosed. An elongate energy application device can absorb, scatter and/or reflect laser energy over a length of the elongate energy application device to thereby treat the hollow anatomical structure along one or more lengthened treatment segments.

A housing, a UVC emitting light source combined to the housing for emitting UVC light outside the housing onto the area of interest, and a controller combined to the UVC light source for controlling the intensity of the UVC light emitted onto the area of interest.

A catheter system (100) for placement within a treatment site (106) at a vessel wall (208A) or a heart valve includes an energy source (124), a balloon (104), an energy guide (122A), and a tissue identification system (142). The energy source (124) generates energy. The balloon (104) is positionable substantially adjacent to the treatment site (106). The balloon (104) has a balloon wall (130) that defines a balloon interior (146). The balloon (104) is configured to retain a balloon fluid (132) within the balloon interior (146). The energy guide (122A) is configured to receive energy from the energy source (124) and guide the energy into the balloon interior (146) so that plasma is formed in the balloon fluid (132) within the balloon interior (146). The tissue identification system (142) is configured to spectroscopically analyze tissue within the treatment site (106). A method for treating a treatment site (106) within or adjacent to a vessel wall (208A) or a heart valve can utilize any of the catheter systems (100) described herein.

Devices and systems used to ablate tissue of a tumor using laser energy are disclosed. The devices and systems include a laser probe and a magnetic resonance (MR) safe temperature probe. The MR safe temperature probe includes an optical sensor. A bone anchor fixture separates the laser probe and the MR safe temperature probe to prevent interference in the MR safe temperature probe data. Proton Resonance Frequency (PRF) thermometry is used to model a temperature of a pixel of an MR image located adjacent the optical sensor. The modeled pixel temperature and the measured temperature are compared and monitored. Exceeding a threshold difference value causes an intervening action to occur.

A catheter system (100) for treating a treatment site (106) within or adjacent to the vessel wall of a blood vessel (108), or the heart valve, includes an energy source (124), a balloon (104), an energy guide (122A), and a balloon integrity protection system (142). The energy source (124) generates energy. The balloon (104) is positionable substantially adjacent to the treatment site (106). The balloon (104) has a balloon wall (130) that defines a balloon interior (146). The balloon (104) is configured to retain a balloon fluid (132) within the balloon interior (146). The energy guide (122A) is configured to receive energy from the energy source (124) and guide the energy into the balloon interior (146) so that plasma is formed in the balloon fluid (132) within the balloon interior (146). The balloon integrity protection system (142) is operatively coupled to the balloon (104). The balloon integrity protection system (142) is configured to inhibit rupture of the balloon (104) due to the plasma formed in the balloon fluid (132) within the balloon interior (146) during use of the catheter system (100).