Abstract: The present invention relates to a visor for intercepting laser light for medical treatment, which is worn by a surgical operator or an assistant in conducting a surgical operation or diagnosis using the laser light. The visor has a frame which is provided with a shield in such a manner that the shield covers at least both eyes, and the shield is a thin plastic molded article having a reflective film on its surface for reflecting the laser light. Said shield may be detachable from a visor main body. Said reflective film comprises a multi-layered vacuum deposited film made of silicon dioxide, for example.

Abstract: The present invention relates to a system for irradiating a living body with laser light. The system is excellent in treatment effect by enhancing the absorption efficiency of laser light at a target area of the living tissue. The system comprises a target means located on the surface or in the inside of a living tissue to be treated including a material which absorbs the laser light to generate heat; and means for irradiating said target with the laser light to generate heat.

Abstract: A laser balloon catheter for emitting in a balloon, laser lights which are transmitted through optical fibers and for irradiating the tissue with the laser lights transmitted through the balloon comprises laser light emitting means having a laser light emitting end of said optical fibers or a laser light transmittable member provided at the emitting end of the optical fibers which receives the laser lights to emit them, a first inflatable balloon provided around said light emitting means for transmitting the laser lights from said emitting means toward the tissue, a first fluid passage for supplying fluid into said first balloon to inflate the same and for discharging the fluid therefrom to deflate the same, a second inflatable balloon provided in front of said first balloon, a second fluid passage for supplying the fluid into said second balloon to inflate the same and for discharging the fluid therefrom to deflate the same.

Abstract: The present invention relates to an apparatus for medical treatment and in particular to an apparatus for medical treatment which is miniaturized to such a size that it can be used together with an endoscope and is capable of incising living tissue with less bleeding. The apparatus for medical treatment is characterized in that said apparatus includes: an outer probe which is in a form of hook; an inner probe which faces said outer probe and is capable of being in and out of contact with said inner probe in a longitudinal direction by the operator's actuation; and heating means for heating a target tissue to be treated which is disposed between said outer and inner probes.

Abstract: The present invention relates to a target material which enables, for example, the blotch to be uniformly and efficiently irradiated with laser light for elimination thereof.In order to modify the living tissue by being irradiated with laser light, the liquid target including laser light absorbing powders having a particle size of not larger than 40 .mu.m, which are dispersed in a dispersing medium is applied on the surface of the living tissue. Then the surface of the tissue on which the target material is applied is irradiated with the laser light. The laser light causes the temperature of the target material to be elevated so that vaporization of the tissue occurs.

Abstract: An apparatus, for laser irradiating and vaporizing the nucleus pulposus of the lumbar intervertebral disc, comprises a hollow needle member; an optical fiber for transmitting a laser light; a lead for detecting the temperature of the nucleus pulposus. The optical fiber and the temperature detecting lead are disposed such that they pass through the needle member adjacent the nucleus pulposus. Insertion is confirmed by ultrasonic diagnosis.

Abstract: The present invention relates to an apparatus for laser treatment for treating the tissue of a human body such as herniated lumbar intervertebral disc by irradiating it with laser light for vaporizing it. The apparatus comprises a hollow needle member which is percutaneously inserted into the target tissue; an optical fiber for transmitting therethrough a laser light from a laser light generator to emit the laser light from the front end thereof; a lead for detecting the temperature of said target tissue and the vicinity thereof; and means for introducing gas which is generated due to vaporization of said irradiated tissue to the outside of the body through the inside of said needle member; and generated gas detecting means for detecting the flow speed or flow rate of the gas which is generated due to the vaporization of said target tissue. The optical fiber and the temperature detecting lead are inserted into said needle member from the base end thereof.

Abstract: A dental handpiece 1 having a laser irradiation switch 5 on a hand grip 2 portion and a bent guide tube 6A through which an optical fiber 7 for introducing laser light to its distal end is inserted, is characterized in that said laser irradiation switch 5 can be rotated around the longitudinal axis of the handpiece 1 together with a holder member 3 which is fitted on the outer periphery of the hand grip 2 and a part (2A) of the hand grip holder 2.

Abstract: A catheter apparatus has an information detecting sensor which is capable of positively controlling an intended treatment effect at a selected position at which laser energy is irradiated, to treat conditions such as solidification or necrosis of tissue. The catheter apparatus comprises a rigid sheath formed to be safely inserted into a body cavity. A window is provided at the front end portion of the sheath to allow a movable sensor to be moved in or out through the window. A balloon means having an inflatable balloon is provided in the sheath adjacent to the sensor. The balloon means is secured to the sheath and is biased through an opening on the opposite side of the sheath toward an adjacent wall portion of the body cavity in a direction opposite to the side of the window when the balloon is inflated. The sensor is thereby projected through the window and is brought into close contact with a correspondingly adjacent portion of the cavity wall by a reaction force of the inflated balloon.

Abstract: A laser balloon catheter apparatus emits laser light, received through optical fiber, via a balloon for irradiating tissue. It includes a laser light emitting means, a coolant supply passage located in the balloon, a coolant discharge passage located in the balloon for discharging the coolant, and a coolant circulating means for supplying the coolant to the balloon through the coolant supply passage to inflate the balloon while discharging the coolant through the coolant discharge passage.

Abstract: A laser light irradiation apparatus for medical treatment by irradiating an object tissue with laser lights transmitted through an optical fiber or fibers comprises a laser light reflector provided in front of the laser light emitting end of said optical fiber for reflecting the laser lights in a lateral direction of the apparatus, a covering which covers the reflector and is capable of transmitting the laser lights at least at the side portion thereof, wherein fluid is continuously supplied to a space between the covering and said reflector.

Abstract: A cavity in which exciting lamps and a laser rod are disposed is provided in the substantially central position of the section of a cylindrical casing. A heat exchanger comprises a multiplicity of cooling fins which surround the periphery of the cavity are integrally formed of an outer wall so that air paths are formed through and between the cooling fins in an axial direction of the cylindrical casing and coolant is circulated through a space between the cavity and the outer wall. A cooling fan is disposed in the rear of said cylindrical casing for blowing air toward the heat exchanger.

Abstract: Laser light apparatus for medical treatment to permit amputations, incisions, vaporization of living tissues of an animal such as a human body, thermal therapy and the like. This apparatus consists of a laser light generator, a laser light transmissive probe system and a laser light transmitting system. The laser light transmissive probe system is provided with an opposed pair of laser light transmissive probes. The opposed pair of probes can be controlled by a medical operator so as to be moved into or out of contact with each other at their laser light emitting portions. Laser light is transmitted to the opposed pair of probes from the laser light generator through the laser light transmitting system. Then, a target area of living tissues is pinched by the opposed pair of laser light transmissive probes so as to be disposed between the opposed pair of laser light emitting portions.

Abstract: A laser balloon catheter apparatus emits laser light, received through optical fiber, via a balloon for irradiating tissue. It includes a laser light emitting means, a coolant supply passage located in the balloon, a coolant discharge passage located in the balloon for discharging the coolant, and a coolant circulating means for supplying the coolant to the balloon through the coolant supply passage to inflate the balloon while discharging the coolant through the coolant discharge passage.

Abstract: A producing method of phosphoric a applied in medical treatment comprises dissolving sodium hydroxide in n-propyl alcohol, isopropyl alcohol or mixtures thereof so as to prepare a solution of the sodium hydroxide, dissolving the pheophorbide a in a solvent miscible with the sodium hydroxide solvent so as to prepare a solution of the pheophorbide a and dissolving the solution of the pheophorbide a in the solution of the sodium hydroxide so as to obtain sodium pheophorbide a. Thus, the water-soluble pheophorbide a can be safely used.

Abstract: An apparatus performs operations such as incision, coagulation and evaporation of the tissue of a living body such as human body with laser lights. An apparatus for performing a surgical operation of the tissue of a living body with laser lights while contacting a blade with the tissue of the living body comprising a holding portion which is held by an operator, a blade which is integral with the holding portion and is made of a material which generates heat on exposure to laser lights and can not transmit the laser lights therethrough, and an optical fiber which receives laser lights for emitting the laser lights from the front end thereof, said blade being positioned in such a manner that a part of said blade is located in the irradiation area of the laser lights from said optical fiber and said optical fiber being movable toward and away from said blade while said optical fiber is held by said holding portion.

Abstract: Laser light apparatus for medical treatment to permit amputations, incisions, vaporization of living tissues of an animal such as a human body, thermal therapy and the like. This apparatus consists of a laser light generator, a laser light transmissive probe system and a laser light transmitting system. The laser light transmissive probe system is provided with an opposed pair of laser light transmissive probes. The opposed pair of probes can be controlled by a medical operator so as to be moved into or out of contact with each other at their laser light emitting portions. Laser light is transmitted to the opposed pair of probes from the laser light generator through the laser light transmitting system. Then, a target area of living tissues is pinched by the opposed pair of laser light transmissive probes so as to be disposed between the opposed pair of laser light emitting portions.

Abstract: A laser light irradiation apparatus for medical treatment of living tissues, a preferred embodiment, comprises a laser light emitter and plurality of optical fibers. The fore end portion of each optical fiber is exposed to form an exposed light emitting core. The exposed cores are surrounded by a clad-material serving as the laser light emitter in order to reduce power loss of the laser light. Also, since there is no space between the emitting face of the optical fiber and the impinging face of the emitter, a cooling fluid is not required to pass through. The laser light is emitted from the emitter to irradiate uniformly against the tissues, and if desired, against the tissues having a broad area. Further, a guide wire and a lead wire detecting a temperature can extend coaxially through the emitter. Therefore, a perforation of a normal part of the blood vessel can be prevented. To provide a more uniform power level distribution of the laser light, the optical fibers at the base portions are twisted.

Abstract: The present invention relates to a method of soldering electronic components to each other. When a member to be bonded is soldered to a base material by irradiating the member to be bonded with laser lights, the laser lights are incident upon a laser light transmittable probe and are emitted from the front end of the probe and the front end of the probe is in substantial contact with a solder or the member to be bonded.

Abstract: A laser light irradiation apparatus used for medical treatment of tissues. According to a preferred embodiment, the apparatus comprises a probe, an optical fiber feeding laser light into the probe and a lead wire for detecting a temperature being inserted through and projecting from the probe. Then, the probe contains laser light scattering particles for uniform irradiation of the laser light against the tissues. Further, the probe is fabricated from a laser light tramissive synthetic material, and the fore end of a core of the optical fiber and the inserting part of the lead wire are in the synthetic material of the probe for easy molding for this apparatus.