JPH01141671A - Medical laser irradiator - Google Patents

Abstract

PURPOSE:To enable irradiation of desired laser beam power with a small and simple system by application of a laser device which combines transistor laser and an optical lens which collects laser beams and a light introducing fiber for laser beam in the center hole of an injection needle, with one end of the injection needle cut sharply. CONSTITUTION:To a base 8, a transistor laser 5 and an optical lens 6 are applied, with one end of the base 8 made cylindrical. A cover 7 which is bound with a cable 2 is fixed to a base 8 to constitute a laser applying device 3. A laser needle 4 consists of an injection needle 9 and an optical fiber 10. One end of the injection needle 9 is cut sharply to permit easy insertion into the body, while to the other end an applying part 9a is attached to make application of the base 8 to the end 8a easy. From hygiene consideration, the optical fiber 10 and the center hole of the injection needle 9 are preferably in sealed condition.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a laser beam irradiation medical device that is capable of efficiently irradiating laser beams to four deep parts of a living body.

BACKGROUND OF THE INVENTION It is well known that pain such as stiff shoulders and neuralgia can be alleviated by irradiating tender points (called acupuncture points in Oriental medicine) in a living body with a weak laser beam. However, the optical extinction length (transmission length when the optical power is attenuated) of a laser varies depending on the wavelength, but it has been experimentally determined that it is at most a few n, and from the clinical medical point of view, it is There is a difference in the therapeutic effect of laser irradiation on shallow areas (such as the joints of the hands) and deep areas (such as the lower back), with deeper nerve areas being less effective.

As a conventional example, as shown in Figure 1 of Japanese Patent Publication No. 58-861T8, the laser irradiation hole is tapered and the tapered portion is pressed against the living body to bring the laser irradiation hole closer to the nerve site. , making it possible to treat deep affected areas.

Problems to be Solved by the Invention With the above-mentioned device, it is difficult to irradiate a low-energy laser with the desired laser light power to deep nerve sites 1, and increasing the irradiation laser power more than necessary may cause damage to the skin of the living body.・Not only will it cause damage, but the equipment will also become larger, leading to increased costs.

The present invention eliminates the drawbacks seen in the conventional devices described above, and provides a device that has a small size and simple structure, and is capable of irradiating a desired laser beam power fC to the 4th deep part of the living body.

Means for Solving the Problems The present invention provides a laser mounting device incorporating a semiconductor laser and an optical lens for focusing laser light, and a laser light guide fiber or optical lens installed in the center hole of a member of an injection needle. The deep laser irradiation medical device mainly consists of a laser needle in which one end of the injection needle member is cut at an acute angle, and the other end is provided with a detachable attachment part to the laser attachment device. Device.

Function: Since the laser needle has one end cut at an acute angle, it can be easily inserted into the living body part, and the required depth 4.
It becomes possible to irradiate the desired laser beam power to the desired position.

It is particularly effective for laser irradiation to the synovial membrane of joints where the laser beam is blocked by human bones or the like. Furthermore, since the laser needle is detachable, disinfection and sterilization after use is easy. To make it safer, it can also be made disposable.

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

FIG. 1 is an overall view of a deep laser irradiation medical device according to an embodiment of the present invention, which includes a power source 1 for driving and controlling a semiconductor laser, a laser fixture 3 incorporating a semiconductor laser and an optical lens, It is comprised of a laser needle 4 equipped with a detachable attachment part to a laser fixture a, and a cable 2 for transmitting electricity to the semiconductor laser.

FIG. 2 is a detailed view of the laser fixture 3 and the laser needle 4.

A semiconductor laser 5 and an optical lens 6 are attached to the base 8, and the end portion 8& of the base 8 has a cylindrical shape. cable 2
The cover 7 combined with the laser mount 7 is fixed to the base 8 to constitute a laser fixture a.

The laser needle 4 is composed of an injection needle 9 and an optical fiber 10. One end of the injection needle 9 is cut at an acute angle to facilitate insertion into a living body, and the other end is detachable from the end 8a of the base 8. A mounting portion 9& is provided for the purpose of From the standpoint of hygiene, it is desirable that the optical fiber 1° and the center hole of the injection needle 9 be in a sealed state.

3 to 6 are enlarged views of the laser irradiation end of the laser needle 4, which serves as the living body injection end. In FIG. 3, the tip 111L of the optical fiber 11 is processed to be flush with the acutely cut surface of the injection needle 9. Figure 4 shows the tip 12 of the optical fiber 12! L is processed into a spherical shape. In FIG. 5, the tip 13 & of the optical fiber 13 is processed perpendicular to the optical axis. In FIG. 6, the tip 14.1L of the optical fiber 14 is processed to be flush with the acutely cut surface of the injection needle 9, and the surface is etched to have unevenness so as to cause diffuse reflection.

FIG. 7 is a configuration diagram of a deep laser beam irradiation medical device according to a different embodiment of the present invention. Parts that differ from those in Figure 2 are given different numbers, and others are given the same numbers. The difference from the configuration shown in FIG. 2 is the cylindrical portion 81L at the tip of the laser mounting device 15.
The optical fiber 1e is fixed to the
is provided, and the optical fiber 16 is inserted into the injection needle 9 until it comes into contact with the optical lens 19 to form the laser needle 1T. With this configuration, even if the injection needle 9'f is disposable, the optical fiber material can be saved.

8 to 11 are enlarged views of the living body injection end (laser irradiation end) of the laser needle 19 used in the apparatus having the configuration shown in factor γ. In FIG. 8, the tip 18& of the optical lens 18 is cut at an acute angle of the injection needle 9.

The surface is machined to be flush with the curved surface. In FIG. 9, the optical lens 19 is spherical. In FIG. 1Q, the optical lens 20 has a cylindrical shape. In FIG. 11, the tip 21& of the optical lens 21 is processed to be flush with the acutely cut surface of the injection needle 9, and is etched so that the surface is uneven to cause diffuse reflection.

Effects of the Invention The medical device of the present invention has a small size and simple structure, and can be used in deep parts of the living body.
A desired laser beam can be irradiated without reducing the laser beam power to a certain extent. It is particularly suitable for irradiating areas such as the sulcus membrane of the knee joint where the laser beam is blocked by human bones.

[Brief explanation of the drawing]

Fig. 1 is an overall conceptual diagram of a laser beam irradiation medical device according to an embodiment of the present invention, Fig. 2 is a cross-sectional view of the laser fixture and laser needle of the same device, and Figs. 3 to 6 are the laser needle. Diagrams of various shapes of the laser irradiation tip of the optical fiber incorporated in the 7th
The figure is a sectional view of a laser fixture and a laser needle of different embodiments of the present invention, and FIGS. 8 to 11 are diagrams of various shapes of the laser irradiation tip of the optical lens incorporated in the laser needle shown in FIG. 7. It is. 1. River... [source m, 2... Cable, 3. River...
・Laser mounting device, 41.1 completed...Laser needle,
6... Semiconductor laser, 6.18-21...
・・Optical lens, 7・・Cover, 8・・・Base, 8 &・・・・Cylindrical shape, 9・・・・Injection needle,
91L...Mounting part, 10-14.16...
...Optical fiber, 16...Laser fitting. Name of agent: Patent attorney Toshio Nakao and one other Figure 3 '14 Figure 8 Figure 11 (j / - C 9 note MW ζ11

Claims (5)

[Claims] (1) A semiconductor laser, an optical lens that focuses the laser beam emitted from the laser beam, a laser fixture that has a cylindrical part for passing the laser beam provided at the tip, and a laser beam that is inserted into the center hole of the injection needle member. A laser beam equipped with a laser needle equipped with a light guide fiber, one end of the injection needle cut at an acute angle, and the other end provided with an attachment part for detachably attaching to the outer periphery of a cylindrical part through which the laser beam passes. Irradiation medical equipment. (2) Attach the laser light guide fiber to the fixture,
Claim 1, characterized in that an optical lens is attached to the center of the sharply cut tip of the injection needle, and the light guide fiber is inserted into the laser needle until it comes into contact with the optical lens. Laser light irradiation medical device. (3) The laser irradiation end of the light guide fiber or the optical lens attached to the laser needle is along the acutely cut tip surface of the injection needle, according to claim 1 or 2. Laser light irradiation medical device. (4) A laser beam irradiation medical device according to claim 1 or 2, comprising a laser needle in which the laser irradiation end of an optical lens at the tip of the injection needle is processed into a spherical shape. (5) A laser beam irradiation medical device according to claim 1 or 2, comprising a laser needle in which the laser irradiation end of an optical lens at the tip of the injection needle is cut at right angles to the laser optical axis.