JP2001029381A - Laser beam treatment assisting implement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the drop of a medicinal liquid adhered to the front end of an optical fiber in the process that the front end of the optical fiber is brought to a treatment point in the treatment to make the medicinal liquid, etc., adhere to the front end of the optical fiber and irradiating the crystalline lens with a laser beam through the medicinal liquid. SOLUTION: This assisting implement 30 is used to prevent the medicinal liquid 12 adhered to the front end of the optical fiber 21 so as not to drop the medicinal liquid when treatment is carried out by making the medicinal liquid 12 adhere to the front end of the optical fiber 21 and irradiating the crystalline lens 3 with the laser beam through the medicinal liquid 12 from the optical fiber 21 to pierce the film of the crystalline lens with a hole. The assisting implement 30 has a guide pipe 31 which guides the optical fiber and a stopper detaining member 32 which regulates the insertion length of the optical fiber in such a manner that the front end of the optical fiber does not protrude from the front end of the guide pipe.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laser light treatment aid, and more particularly to a case where a living tissue is evaporated, coagulated, and incised by irradiating a laser beam from the tip of an optical fiber.
Indocyanine green (IC)
G) A guide for guiding the insertion of the optical fiber so that the chemical solution attached to the tip of the optical fiber does not fall off the tip of the optical fiber when a chemical solution such as G) is applied and laser light is irradiated through the chemical solution. The present invention relates to an auxiliary tool having a pipe.

[0002]

2. Description of the Related Art As a method for operating a cataract, a method of replacing a lens with an artificial lens has been proposed. However, this operation is performed as follows, and it is necessary to make a small hole in the lens capsule. 1. Make a small cut in the cornea with a scalpel or the like. 2. Drill the small holes mentioned above in the lens capsule. 3. An ultrasonically vibrating chip is inserted through the small hole, the crystalline lens is gelled, and the gel is sucked out by vacuum or the like. 4. Insert artificial lens (liquid) and finish.

As described above, in cataract surgery,
A small hole is drilled in the crystalline lens film. As a drilling means, a trevan bar, which is a cylindrical blade, is conventionally used, but a laser beam may be used instead of the treban bar. When performing cataract surgery using laser light, the laser light from the optical fiber is irradiated onto the crystalline film, and at that time, a guide pipe that guides the tip of the optical fiber to the surface of the crystalline film is used, as described later. I need.

FIG. 3 is a schematic configuration diagram for explaining an example of a case where a hole is made in a film of a crystalline lens using a laser beam.
In the figure, reference numeral 10 denotes an eyeball, which is a cornea 1, an anterior chamber (filled with an aqueous humor) 2, a lens 3, a iris 4, a ciliary body 5, a vitreous body 6, a retina 7, an optic nerve. It is 8 mag. 2
Reference numeral 1 denotes an optical fiber, and a laser light source 20 (see FIG. 1) is connected to an end (not shown) of the optical fiber 21, and laser light from the laser light source is applied to the coating of the crystalline lens 3 through the optical fiber 21. , The lens 3
A hole is made in the film of. At this time, the optical fiber 2
By attaching the heat-generating member 11 to the tip of 1, the heat-generating effect can be enhanced, and a cleaner hole can be made.

[0005]

FIG. 4 is a view for explaining another example in which a hole is formed in a film of a crystalline lens using a laser beam. FIG. 4 (A) is a principle diagram, and FIG. B) is a diagram when applied to a crystalline lens, in which 12 is a chemical solution,
2 is placed on the crystalline lens 3, and the crystalline lens 3 is irradiated with laser light from the optical fiber 21 through the chemical solution 12. For example, indocyanine green (I
Assuming that the wavelength of the semiconductor laser light emitted from the optical fiber 21 is 810 nm using CG), the maximum absorption wavelength of the ICG is 805 nm. Therefore, the ICG effectively absorbs the laser light and instantaneously generates heat. A hole can be formed more effectively in the lens film (more generally, the film of a living tissue) 3.

FIG. 4B is a schematic configuration diagram for explaining an example of a case in which a film of the crystalline lens is formed by using the above-mentioned chemical solution. In this case, the chemical solution is directly applied to the surface of the crystalline lens 3. Therefore, it is attached to the tip of the optical fiber, and in this state, the tip of the optical fiber is inserted up to the surface of the crystalline lens membrane. At this time, the tip of the optical fiber passes through the anterior chamber 2 filled with the aqueous solution. Therefore, there is a problem that the attached chemical liquid drops.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and in a treatment in which a chemical solution or the like is applied to the tip of an optical fiber and a laser beam is irradiated through the chemical solution, a chemical solution attached to the tip of the optical fiber is used. In the process of bringing the tip of the optical fiber to a treatment site, for example, by touching a living tissue,
It is an object of the present invention to provide an auxiliary tool for preventing falling, more specifically, an optical fiber guide pipe for preventing a chemical solution attached to a tip of an optical fiber from falling. .

[0008]

According to the first aspect of the present invention, a chemical solution is attached to the tip of an optical fiber, and a laser beam is irradiated from the optical fiber to the living tissue through the chemical solution to evaporate, coagulate, and coagulate the living tissue. An auxiliary tool used for treatment with a semiconductor laser to be incised, the auxiliary tool holds a guide pipe through which the optical fiber is inserted, and the guide pipe,
And a stopper locking member that regulates the insertion length of the optical fiber so that the distal end of the optical fiber does not protrude from the distal end of the guide pipe, and the stopper locking member includes a stopper attached to the optical fiber. The optical fiber is characterized in that it is locked to regulate the insertion length of the optical fiber.

According to a second aspect of the present invention, in the first aspect of the present invention, the auxiliary tool has a chemical liquid inlet for injecting a chemical liquid into the guide pipe in the stopper locking member, and the chemical liquid is supplied to the guide pipe. The optical fiber is guided to the tip of the optical fiber through a pipe.

A third aspect of the present invention is characterized in that, in the second aspect of the present invention, the stopper locking member has a suction port for sucking and discharging the chemical solution injected into the guide pipe. .

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic structural view for explaining an example of use of a laser treatment aid according to the present invention. In the drawing, 10 is an eyeball, 20 is a handpiece having a semiconductor laser light source, 21 Is an optical fiber through which laser light from the semiconductor laser light source in the laser handpiece 20 is transmitted, 30 is an auxiliary tool for guiding the light source of the optical fiber 21 to the film of the crystalline lens 3, and the auxiliary tool 30 is Cornea 1, anterior chamber 2
A guide pipe 31 is inserted through the film to the surface of the lens 3. In this state, that is, after the guide pipe 31 is inserted through the water front chamber 2 to the surface of the crystalline lens 3, the optical fiber 21 with the chemical solution 12 attached to the tip is inserted through the guide pipe 31. In this way, when the optical fiber 21 is inserted up to the surface of the crystalline film, the tip of the optical fiber 21 does not touch the living tissue.
There is no fear that the chemical solution 12 attached to the tip of the optical fiber 21 falls.

FIGS. 2A to 2C are cross-sectional views for explaining each embodiment of an auxiliary tool (guide pipe) 30 according to the present invention, and FIG. 2D is a structural example of an optical fiber. 2A, reference numeral 31 denotes a guide pipe for an optical fiber, reference numeral 32 denotes a base material for attaching the guide pipe 31, and a stopper 22 is provided on the optical fiber 21 as shown in FIG. Is attached. In FIG. 2A, the guide pipe 31 is connected to the optical fiber 2 as described above.
By using the guide pipe 31, when the tip of the optical fiber 21 is brought to the surface of the crystalline lens 3, the liquid medicine (ICG) 12 attached to the tip of the optical fiber 21 is used for the living body. The medical solution 12 can be inserted to the surface of the lens 3 and the like without touching the tissue. Reference numeral 33 denotes a stopper locking hole provided in the base material 32. The stopper 22 attached to the optical fiber 21 is engaged with the stopper locking hole 33 to stably hold the optical fiber 21 on the auxiliary tool 30. Let me
By adjusting the position of the stopper 22, the insertion depth of the optical fiber 21 into the pipe guide 31 is adjusted,
The tip of the optical fiber 21 can contact the film of the crystalline lens 3 with an appropriate contact pressure.

The assisting tool 30 shown in FIG. 2 (B) has an outer tube 34 provided with a predetermined gap outside an optical fiber guide pipe 31 and an injection port 35 for injecting a chemical solution into the gap. In this case, the optical fiber 21 can be used without applying a chemical solution to the tip of the optical fiber 21.
Is inserted into the guide pipe 31 and a chemical solution (ICG) flows from the injection port 35 to the tip of the guide pipe 31, so that the lens film can be irradiated with laser light through the ICG.

FIG. 2 (C) shows the auxiliary tool shown in FIG. 2 (B) further provided with a suction port 36 for discharging the poured ICG. After drilling), the poured ICG can be removed cleanly.

[0015]

As is clear from the above description, when a hole is formed in a lens film by using a laser beam, a chemical solution such as ICG that effectively absorbs the laser beam is applied to the tip of the optical fiber. It is possible to irradiate light, and the ICG attached to the tip of the optical fiber is reliably (ie,
It can be transported (without dropping) to the lens skin surface. In addition, since the tip position of the optical fiber can be adjusted to an appropriate contact pressure, a clean hole can be formed without pushing out the crystalline film at the tip of the optical fiber. Furthermore, an appropriate amount of ICG can be reliably injected into the tip of the optical fiber, and the injected ICG can be removed cleanly.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram for explaining an example of use of a laser treatment aid according to the present invention.

FIGS. 2 (A) to 2 (C) are cross-sectional views for explaining each embodiment of the assisting device according to the present invention, and FIG. 2 (D).
FIG. 3 is a diagram illustrating a configuration example of an optical fiber.

FIG. 3 is a schematic configuration diagram illustrating an example of a case where a hole is formed in a film of a crystalline lens using laser light.

FIG. 4 is a diagram for explaining another example in which a hole is formed in a film of a crystalline lens using a laser beam.

[Explanation of symbols]

2 anterior chamber, 3 lens, 10 eyeball, 20 laser light source, 21 optical fiber, 22 stopper, 30 auxiliary tool, 31 guide pipe, 32 substrate, 33 stopper stopper, 34 ... outer cylinder, 35 ... chemical liquid inlet, 36 ... chemical liquid suction port.

Claims (3)

[Claims] 1. An auxiliary tool used for treatment with a semiconductor laser that attaches a chemical solution to the tip of an optical fiber, irradiates a living tissue with laser light from the optical fiber through the chemical solution, and evaporates, coagulates, and incises the biological tissue. Wherein the auxiliary tool includes a guide pipe through which the optical fiber is inserted, and an insertion length of the optical fiber such that the guide pipe is held and the tip of the optical fiber does not protrude from the tip of the guide pipe. And a stopper locking member for controlling the insertion length of the optical fiber by locking the stopper attached to the optical fiber. Treatment aid. 2. The auxiliary tool has a chemical liquid inlet for injecting a chemical liquid into the guide pipe in the stopper locking member, and guides the liquid chemical to the tip of the optical fiber through the guide pipe. The laser light treatment aid according to claim 1, wherein: 3. The laser light treatment assisting tool according to claim 2, wherein the stopper locking member has a suction port for sucking and discharging the chemical solution injected into the guide pipe.