JPS60108804A - Optical fiber probe - Google Patents

Abstract

PURPOSE:To perform incision, transpiration, working, etc. effectively by providing an optical fiber which has the end face formed obliquely, an optical fiber holding pipe, and a window and providing the holding pipe with a relatively movable cylinder shutter inserting this probe to or allowing it to pierce an object to irradiate the inside of the object with a laser. CONSTITUTION:The carbon dioxide laser light condensed by a lens is made incident on an optical fiber 1 from the direction of an arrow (x) and is reflected totally on an end face 1a and exits from the side face of the optical fiber 1 in the direction of an arrow (y). An optical fiber holding pipe 2 is fixed to the fiber with an adhesive 3. A window 5a is provided in accordance with a window 2a of the optical fiber holding pipe 2, and a cylinder shutter 5 is rotated to cut off or open the optical fiber 1 from or to the outside. In the state where the cylinder shutter 5 is closed, a living tissue is not stuck to the fiber directly. Thereafter, the cylinder shutter 5 is opened to irradiate the peripheral tissue with the carbon dioxide laser light.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an optical fiber globe used in a light guide path of a laser scalpel or a laser processing machine.

Configuration of conventional examples and their problems In recent years, surgery and carotherapy have been performed using laser scalpels and laser processing machines using CO2 lasers, YAG lasers, etc., which are guided to the target area using optical fibers. The 751 laser beam guided by the Phi-no-Ku is irradiated onto the surface of the object and makes an incision.

Operations such as evaporation and cutting are performed, but there are also many cases where it is necessary to insert or pierce optical fibers into body cavities, biological tissues, gel-like substances, etc., and perform surgery or caloric treatment from inside the object. There are several problems with using optical fiber directly for this purpose.

Firstly, the strength is insufficient to pierce the optical fiber into living tissue, etc., and secondly, the strength of the optical fiber is insufficient to pierce the living tissue, etc.; Not only does the optical fiber absorb the laser light when it is passed through, making it impossible to irradiate it effectively, but the heat generated by the absorbed laser light can sometimes damage the optical fiber.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned problems of the conventional art.It is an object of the present invention to perform surgery inside an object by inserting or piercing an optical fiber into a body cavity, biological tissue, or a gel-like substance.

The purpose is to provide an optical fiber probe that can be processed.

Structure of the Invention The present invention provides an optical fiber holding pipe in which one end surface of an optical fiber is formed obliquely so that the laser beam is emitted from the side surface of the optical fiber, and a window is provided at the laser beam emitting position, and a window is provided on the outside of the optical fiber holding pipe. The strength of the optical fiber is reinforced by installing a cylindrical shutter with the cylindrical shutter closed.By piercing the optical fiber probe into the biological tissue, etc. with the cylindrical shutter closed, it is possible to prevent the biological tissue, etc. from adhering to the end of the optical fiber. It is designed to open and emit a laser beam.

Description of examples Embodiments of the present invention will be described below with reference to the drawings.

The figure is a sectional view of an optical fiber globe in an embodiment of the present invention. Reference numeral 1 denotes an infrared optical fiber made of KH2-6, and the end face 1a is formed obliquely to the optical axis as shown in the figure. The carbon dioxide laser beam focused by the lens enters the optical fiber 1 from the direction of the arrow, is totally reflected by the end face 1a, and is emitted from the side surface of the optical fiber 1 in the direction of the arrow y. 2 is an optical fiber holding device, and the fiber is fixed with an adhesive 3 using an S-beam. This holding pipe 2 is a thin stainless steel pipe with sufficient flexibility, and there is a window 2a at the position where the carbon dioxide laser beam is emitted.
is provided. Reference numeral 4 denotes a holder which is adhesively fixed to the C-build 2. 5 is a stainless steel cylindrical shutter provided coaxially with the optical fiber holding pipe 2 and having a closed end face, and is a window 21L of the optical fiber holding pipe 2.
A window 6a is provided correspondingly. Cylindrical shutter 6
is configured to be rotatable with respect to the optical fiber holding pipe 2, and by rotating it, the optical fiber 1 can be isolated from the outside or opened. Of course, the same effect can also be obtained by sliding the cylindrical shutter 6 in the longitudinal direction. When the cylindrical shutter 6 is inserted into a living tissue, such as the vitreous body of an eyeball, in a closed state, the vitreous body tissue will not directly adhere to the fiber. Thereafter, the cylindrical shutter 6 is opened and a carbon dioxide laser beam is irradiated to irradiate the surrounding tissue. At this time, a gel-like substance is passed between the cylindrical shutter 6 and the optical fiber holding pipe 2, but a small gap is created to allow air to pass through, so that the gas generated near the window during laser irradiation is passed through the tube 6. By suctioning, the generated tissue can be irradiated and evaporated more effectively. Further, the same effect can be achieved even if a YAG laser is used as the laser and a quartz optical fiber is used as the optical fiber.

Effects of the Invention As described above, the present invention uses an optical fiber whose end face is formed obliquely, an optical fiber holding pipe having a window, and a cylindrical shutter having a window and which is movable relative to the optical fiber holding pipe. By inserting or piercing an optical fiber probe into tissue or gel-like substances, it is possible to effectively incise, evaporate, process, etc. by irradiating a laser beam with sound inside the object. In other words, the optical fiber is strongly reinforced by the optical fiber holding pipe and the cylindrical shutter, making it possible to easily pierce the object.The cylindrical shutter also eliminates deposits on the optical fiber and allows sufficient power of the laser beam to penetrate into the object. It can be irradiated.

[Brief explanation of the drawing]

The figure is a sectional view of an optical fiber glove in one embodiment of the present invention. 1... Optical fiber, 2... Optical fiber holding pipe, 2 &... Window of optical fiber holding pipe, 6... Cylindrical shutter, 6a...
...Cylindrical shutter window.

Claims (2)

[Claims] (1) A device consisting of an optical fiber whose end face is formed obliquely with respect to the optical axis, and a side surface of the optical fiber that covers the end of the optical fiber and allows light that is totally reflected by one end face of the optical fiber to be provided with a first window. and a cylindrical shutter with a closed end face, which is coaxially provided outside the optical fiber holding pipe and has a second window that can face the first window, and has a closed end face. An optical fiber glove in which the first and second windows face each other by making the shutter movable relative to the optical fiber holding pipe. (2) The optical fiber probe according to claim 1, wherein a gap is provided between the cylindrical shutter and the optical fiber holding member, and means for absorbing air in the gap is provided.