JPS5977843A - Laser operation apparatus for endoscope - 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] [Technical Field of the Invention] The present invention uses an optical fiber as a light guide path and uses visible light as a guide to indicate the focal position of a surgical beam.
The present invention relates to an endoscopic laser surgical device that combines an infrared laser device using a He-Ne laser and an endoscope.

[Technical background of the invention and its problems]

Conventional surgical laser devices employ a multi-joint light guiding method in which a laser beam is guided to a predetermined position by being refracted and focused by a mirror and lens group, and then emitted from the tip of a manipulator. This method has disadvantages such as the entire device being rigidly formed, making it difficult to operate, and the position of Mi 2- being easily displaced by external forces such as vibrations.

For this reason, there has been a strong demand for a surgical laser device using an original fiber that can improve the optical fibers and can be applied to endoscopes.

Surgical laser light is generally used to perform surgery by irradiating an arbitrary laser light onto a living body to cause a thermal or optical change in that part. When using a fiber system as a light guide path for laser light in such a surgical laser device and combining it with an endoscope, the fiber end Fi on the laser light emission side is likely to be contaminated during insertion of the fiber into the body. Become. If the laser beam is emitted in a contaminated state, this dirt will absorb a portion of the laser beam, causing the temperature of the end or light guide to rise, resulting in thermal destruction. Clothes 9 The therapeutic effect cannot be effectively demonstrated.

[Purpose of the invention]

The present invention has been made in view of the above circumstances, and provides an endoscopic laser surgery device that can prevent contamination of the output end of an optical fiber and thereby prevent thermal destruction of the optical fiber. The purpose is to

[Summary of the invention]

The outline of the present invention for achieving the above object is to provide an endoscope laser device in which a light 77 (bar) is used as a light guide path for a surgical laser beam, and the optical fiber is inserted into an endoscope to perform laser surgery. The present invention is characterized in that a protective cap made of a material that protects the end face from contamination and is ruptured by heat is provided on the laser beam emitting end face of the source fiber.

[Embodiments of the invention] An embodiment of the present invention will be described below with reference to the drawings.

Fig. 1 is a schematic perspective view of an endoscopic laser surgical device, Fig. 2 is a schematic perspective view of a laser oscillation device, Fig. 6 is a sectional view showing the output end of the original fiber, and Fig. 4 is a schematic perspective view of the optical fiber. FIG. 7 is a cross-sectional view when a protective cap is attached to the output end.

In FIG. 1, the endoscopic laser surgical device includes a laser oscillation device 1, an optical fiber 2 for guiding laser light emitted from the laser oscillation device 1, and an endoscope 3. The laser oscillation device 1 has a configuration shown in FIG. That is, an oscillation unit 8 that emits an infrared laser beam, an oscillation tube 9 that emits an M e -A' e laser as a guide visible light that indicates the focal position of the surgical beam, an infrared laser, and a He-Ne laser. It consists of a mixing mirror 10 that guides the laser beam together with an x-y alignment device 11.

As shown in FIG. 3, the original fiber 2 whose one end is connected to the laser oscillation device 1 is inserted into a cylindrical protection tube 12 through a fiber 13tl, and a sleeve 7' 14 is attached to the end of the protection tube 12.
is inserted, and the end of the seven-eyeper 16 is held by the sleeve 14. 16α indicates the output end of the laser beam. A plurality of slits 15 are provided on the inner peripheral surface of the sleeve 14 that holds the fiber 13. This slit 15 allows objects scattered from within the body to be removed from the sleeve 15.
The sleeve 1 is inserted through the protective tube 12 to prevent it from entering the inside of the sleeve 1.
This is for blowing clean gas to 4. In addition, a notch 16 is provided on the outer peripheral surface of the sleeve 14 that protrudes from the protection tube 12.
is provided. The protective cap 17 shown in FIG.
It is made of a material that ruptures under the action of pressure or heat, and is attached so that its open end is locked into the notch 16 in the sleeve.

Next, the endoscope 6 will be explained. As shown in FIG. 1, the endoscope 3 includes a seven-eyeper insertion port 4 for inserting the source fiber 2, and an insertion port 4 for inserting the optical fiber 2'f into the subject and guiding it to the affected area. It consists of a pipe 5 and a cleaning pipe 7 for introducing clean gas into the sleeve 14 of the optical fiber 2.

Reference numeral 6 denotes a hole provided at the tip of the insertion pipe 5, through which the patient is irradiated with the laser light that is guided through the original fiber 2.

The operation of the endoscopic laser surgical device configured as described above will be explained with reference to FIG. 5 as well.

When performing laser surgery, first, the insertion pipe 5 of the endoscope 6 is inserted into the body cavity of the subject, and the hole 6 is set at a predetermined position. Next, the original fiber 2 is inserted through the fiber insertion port 4 in the endoscope 3. At this time, the protective cap 17 is attached to the sleeve 14 at the tip of the optical fiber 2 in advance.
T-insert it.

Then, the tip of the original fiber 2 will be placed in the fiber insertion port 4.
It is possible to prevent contaminants from entering the sleeve 114 while being inserted into the sleeve 114 and being guided by the insertion pipe 5 until reaching the hole 6. Therefore, the output end 13α of the fiber 13
Also, the inner circumferential surface of the sleeve 14 can be kept clean.

In the above state, next, in order to confirm the laser beam irradiation position, Ilg-Ne laser beam is irradiated as a guide source. First, as a preparation, the laser oscillation device 1 oscillates a IIe-Ne laser beam or an infrared laser with a low laser energy in a pulsed manner. This laser light is irradiated onto a protective cap 17 attached to the tip of the original fiber 2.

Since the protective cap 17 is made of a material that can be broken by pressure or heat, it can be broken by the laser beam and the fifth
As shown in the figure, the tip of the sleeve 14 is now exposed. The broken safety cap 17 is still attached to Three 1.
Since the fiber 16 is locked in the notch 16 in the fiber 14, there is no problem with the laser irradiation of the edge of the fiber 16.
The emission end 13a and the inner circumferential surface of the sleeve 14 can be kept clean. Note that during surgery, clean gas can be introduced into the sleeve 14 through the slit 15 provided on the inner peripheral surface of the sleeve 14, so that contamination of the optical fiber 2 can be prevented.

It goes without saying that the present invention is not limited to the embodiments described above, and includes various modifications within the scope of the gist of the present invention. After breaking, remove the protective cap 17 from the three 7"14
As a means of holding it on the outer peripheral surface of.

Not limited to the above-mentioned embodiment, if the protective cap 17 is made of a stretchable material, for example, the notch 16 becomes unnecessary.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to provide an endoscopic laser surgery device that can prevent contamination of the laser light emitting end of an optical fiber. Therefore, thermal destruction of the output end of the optical fiber due to contamination can be prevented, and safe laser surgery can be performed.

[Brief explanation of the drawing]

Fig. 1 is a schematic perspective view of an endoscopic laser surgical device, Fig. 2 is a schematic perspective view of a laser oscillation device, and Fig. 6 is a cross-sectional view showing the output end of the original fiber. FIG. 5 is a sectional view showing the output end of the optical fiber after the protective cap is broken. 1... Laser oscillation device, 2... Optical phino (,
6... Endoscope, 12... Storage tube, 13...
・Fino (, 14...Sleeve, 15...Slit, 16...Notch, 17...Honai cap. Agent: Patent attorney Noriyuki Chika (and 1 other person) Fig. 3 Fig. 4

Claims (1)

[Claims] An optical fiber is used as a light guide path for a surgical laser beam, and the optical fiber is inserted into an endoscope to perform laser surgery. A laser surgery device for an endoscope, characterized in that a protective cap made of a material that protects the end face from contamination and is broken by heat is provided on the end face.