JPS628748A - fiber optic cable - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a laser irradiation device such as a laser processing machine or a laser scalpel.

BACKGROUND OF THE INVENTION Infrared laser light such as a CO2 laser is suitable for ablation and incision of living tissue, and laser irradiation devices using this have been put into practical use. Heretofore, the infrared laser light has been guided to the surgical site by a mirror-articulated light guide made up of a plurality of mirrors, since no suitable optical fiber has been developed that passes this wavelength. FIG. 4 shows an example of a laser irradiation device using a mirror-articulated light guide path 37, and will be explained based on the figure. 38 is a main body having a power source (not shown), etc. Laser light emitted from an oscillation tube 39 is sent to the hand piece 4o via several mirrors 36. In addition, He * Ne is used as a visible light guide light.
Laser light is focused from an oscillator (not shown) in the main body 38 through several mirrors 36 to a focal point of the laser light. However, the mirror-articulated light guide path 37 has the problem of poor operability. For example, an optical fiber cable that guides the laser light using an optical fiber made of a halide material such as KH2-5 has not been put into practical use. It's starting to happen. The optical fiber cable has good operability, has a small diameter, and can be used for surgery inside a pore. Still, Co2 laser - light has a wavelength of 10.6
He is an invisible light beam of μ that clearly shows the irradiation position to the operator.
Requires visible light guide light such as m No laser. The mirror-articulated light guide path 37 docks the Co2 laser beam and the He m No laser beam for guide light in the middle, and passes the guide light through the center of the Co2 laser beam. In addition, in optical fiber cables, the transmission wavelength of optical fibers such as KH2-5 is 1.6μ to 26μ, so visible light (wavelength 0.68μ) such as He*Ne laser cannot pass through, so quartz fiber for guide light is also used. do. FIGS. 2 and 3 show an example of a laser irradiation device using an optical fiber cable 21, and will be explained based on the figures. 22
is a main body having a power source (not shown), etc., and an oscillation tube 2
The irradiated laser light passes through the infrared optical fiber 4 such as KH2-5 in the optical fiber cable 21 and is irradiated from the laser beam 224. 25 is an operation panel for controlling the amount of laser light irradiation, etc.;
is a support rod that holds the optical fiber cable 21.

In addition, a He@Ne laser beam as visible light guide light passes from an oscillator (not shown) in the main body 22 and a quartz fiber 27 to a quartz fiber 28 in the optical fiber cable 21, and from the node piece 24 to the Focus the laser beam on the focal point. The optical fiber cable 21 will be explained based on FIG. 3. 29 is an incident side condensing lens attached to the main body 22 side, and CO2
The laser beam is focused and incident on the end face of the optical fiber 4 within the optical fiber cable 21. 30 is a window. The optical fiber 4 and the quartz fiber 28 have one end fixedly held on the input connector 31, and the other end is fixedly held on a holder 34.
It is fixed within the throat piece 24 with a screw (not shown) or the like.

33 is a condensing lens fixedly held within the bead 24. Reference numeral 35 denotes a curvature limiting cable, one end of which is fixed to the input connector 31° and the other end fixed to the hand piece 24 with a screw (not shown).

Problems to be Solved by the Invention Currently, there are laser irradiation devices on the market that use mirror-articulated light guides, but it is difficult to purchase additional laser irradiation devices that use optical fiber cables that are easy to operate. This is not easy to implement due to issues such as price and securing a location for installation.

For this reason, the mirror joint type has problems such as not being able to adequately handle surgery within the pore and being difficult for the surgeon to handle due to its operability.

Means for Solving the Problems The present invention provides an optical fiber that guides a power laser beam for surgery, a guide light fiber that specifies the laser light emitted from the optical fiber, and an optical fiber that enters the optical fiber and the guide light fiber. a branching means provided on the side for branching a surgical power laser beam and a guide light incident coaxially therewith and guiding the same to the optical fiber and the entrance port of the guide light fiber; and the branched surgical power laser. The optical fiber cable includes an optical means for condensing light and making it enter the optical fiber.

Operation The CO□ laser beam and the guide light are distributed by the distribution mirror and condensing lens provided on the optical fiber cable, and are irradiated to the optical fiber and the quartz fiber for the guide light, respectively. In addition, it has a structure that can be easily attached to and detached from the mirror-articulated light guide.

Embodiment An embodiment of the present invention will be explained based on FIG. CO of the light guide path 2 that holds several mirrors 1 fixedly. A connector 3 incorporating an optical fiber 4 is fixed to the laser output side with a screw 19. The connector 3 has a distribution mirror 5 inside, one end of the distribution mirror 6 is fixed by a fixing pin 6, and the other end is fitted with a rotation pin 8, which extends through the slide groove 7 provided in the connector 3. It can be rotated by sliding the rotation pin 8. Further, a guide light mirror 9 is fixedly held at a position corresponding to the distribution mirror 5, and a guide light quartz fiber 10 is fixed at a position corresponding to the guide light mirror 9 with an adhesive or the like.

Reference numeral 11 denotes a condensing lens fixed to the lens holder 12, and fixed within the connector 3 with a screw. The optical fiber 4 is fitted and fixed in a protective tube 13 made of metal, for example, and the condenser lens 11 is inserted into the connector 3.
is fixed with a screw at the focal point of the lens. Reference numeral 14 denotes a fixture, which fixes the connector 3 and the curvature limiting tube 16.

The irradiated Co2 laser beam 16 passes through several mirrors 1.
The light passes through the light guide path 2, passes through the distribution mirror 6, is condensed by the condenser lens 11, passes through the optical fiber 4, and is emitted from a handpiece (not shown). The He-Nθ laser beam photon 7 irradiated as a visible light guide light passes through the light guide path 2 via several mirrors 1, is reflected by the distribution mirror 5, and passes through the guide light mirror 9. Then, the guide light quartz fiber 1
The CO2 laser beam is irradiated from the handpiece (not shown) to the focal position of the CO2 laser beam.

That is, the distribution mirror 5 is connected to the optical fiber cable 1.
8, the Co2 laser beam 1 can be generated by simply connecting the connector 3 to the light guide path 2.
Guide light 17 can also be irradiated together with 6.

Further, after connecting the optical fiber cable 18 and the light guide path 2, when only the guide light 17 is irradiated and the distribution mirror 5 is rotated, the red light of the guide light (He 6 Ne laser light) 17 passes through. Although the wavelength is different, a small amount of power passes through the optical fiber 4. If the optical axis is misaligned, even the slightest amount of irradiation cannot be obtained, so the optical axis can be checked by adjusting the position of the condensing lens 11. In addition to Co2 laser, YAG
Although there is a device that uses a laser in combination, CO□ is incident on the quartz fiber 10 for guiding light.

YAG may be used in combination, and if the material of the light guide path 2 is changed to quartz fiber or the like, the distribution mirror 5 can be operated and used exclusively for YAG.

Effects of the Invention By using an optical fiber cable with a distribution mirror and a condensing lens, the present invention can be easily connected to a mirror-articulated light guide path, is easy for the operator to handle, and is also suitable for surgery inside a pore. This is sufficient. In addition, the optical fiber cable of the present invention can be connected to the laser irradiation device for the mirror-articulated light guide that you currently have without purchasing a new laser irradiation device.It is inexpensive, does not take up much space, and is easy to operate. It is highly effective.

[Brief explanation of the drawing]

Figure 1 (A) is a cross-sectional view of an optical fiber cable according to an embodiment of the present invention, Figure 1 (←) is a perspective view of the connector section, Figure 2 is an external view of a conventional laser irradiation device, and Figure 3 is a conventional FIG. 4 is a cross-sectional view of an example optical fiber cable and an external view of a conventional mirror-articulated laser irradiation device for a light guide path. 4... Optical fiber, 5... Distribution mirror, 11-... Condensing lens, 10... Quartz fiber for guide light.

Claims (3)

[Claims] (1) An optical fiber that guides surgical power laser light, a guide light fiber that clearly indicates the laser light emitted from this optical fiber, and a guide light fiber that is provided on the input side of the optical fiber and the guide light fiber, and that is provided with a surgical power a branching means for branching a laser beam and a guide light incident coaxially with the laser beam and guiding the same to the optical fiber and the entrance port of the guide light fiber; and a branching means for condensing the branched surgical power laser beam to An optical fiber cable comprising an optical means for inputting the optical fiber into the optical fiber. (2) The optical fiber cable according to claim 1, wherein the branching means is provided on the optical axis of the laser beam. (3) The optical fiber cable according to claim 1, wherein the branching means is configured to be rotatable.