Abstract: A laser light irradiation apparatus used for medical treatment of living tissues. According to a preferred embodiment, the apparatus comprises a probe and a plural number of optical fibers. The optical fibers surround the axis of the probe. Laser light goes through each optical fiber and is applied to the probe. Then, the laser light is emitted from the probe to uniformly irradiate the tissues, and if desired, against the tissues over a broad area. Further, a guide wire and/or a lead wire for detecting a temperature can be placed so as to be coaxial with the probe. Therefore, a perforation of a normal part of the blood vessel can be prevented.

Abstract: Diagnostic apparatus for diagnosing the location and the size and the like of cancer tissues. Laser light emitted from a laser light generator is impinged into a first spectroscope and a specific spectrum can be selected from the impinged laser light by the first spectroscope. This specific spectrum is transmitted to the target area of the tissues by a laser light transmitting system. The transmitted spectrum is reflected at the target area to produce a reflected wave. A spectrum can be selected from the reflected wave by a second spectroscope. This spectrum can be detected by a spectrophotometer. The laser light emitted from the laser light generator can be also irradiated against the target area for carrying out treatment and diagnosis simultaneously.

Abstract: A laser light emitter is provided for use in a medical treatment, particularly excision of a prominence of an animal organism. The laser light emitter has an excision portion, wherein a part of said excision portion includes a laser light emitting portion which is capable of emitting laser light in the direction for excision of the prominence. The emitter also includes a light emission-intercepting member on the side opposite to the direction for excision of the prominence in order to prevent laser light emission. The laser light emitting portion is optically connected with a laser light generator. By using such a laser light emitter, safe excision of the prominence can be made without giving a shock to the human body or a burn, if laser light is emitted under the presence of a physiological salt solution. In addition, it is possible to remove the prominence while controlling bleeding by regulating the quantity of laser light emission and the ability of hemostasis by laser light.

Abstract: A laser light emitting probe used in a medical treatment. It has longitudinally a base end to impinge on, a body to penetrate through and a tip end to emit from for laser light, comprising the tip end being covered with a light scattering surface and bending at a certain angle on a longitudinal cross section. Preferably, the tip end is covered with a surface layer containing laser light absorbing particles and laser light scattering particles having a larger refractive index than that of the material of the probe on the surface of at least from the bending part to the end part of the tip end.

Abstract: A laser light emitter used in a medical treatment has an optical fiber which extends in a longitudinal direction and at the fore end portion thereof. The core of the fore end portion is not surrounded by a clad but exposed to serve as a laser light emitting portion. A holder supports the optical fiber. Part of or the whole of the emitting portion bends at a certain angle on a longitudinal cross section of the extending direction of the optical fiber. To ensure fixing of the optical fiber to the holder, the optical fiber preferably has a circular cross section, and the holder comprises a thin plate with a concave shaped recess along the edge to which the optical fiber is mounted. The optical fiber extends along the inner surface of the concave shaped recess along the edge of the holder and is fixed thereto by a heat resistant adhesive. To use the emitter in surgery, the holder is connected to a fore end of a hand piece held by an operator.

Abstract: Laser thermotherapy apparatus including a laser splitter which branches laser energy from a laser source to laser guides or optical fibers, each guide having an emitting end. First and second switches are positioned, respectively, before the splitter and in the individual laser guides. Temperature sensors are provided to sample the temperature of living tissue located adjacent each guide emitting end. A controller turns the respective switches on and off in response to the sensed temperature thereby to maintain a predetermined, selectable tissue temperature.