JPH03121063A - Laser device - Google Patents

Abstract

PURPOSE:To easily shift the mechanism of a microscope and distinctly show the irradiation point of laser beam by installing a flexible beam introducing passage consisting of the optical fibers for connecting a laser beam oscillator and a beam irradiation guide device having a marker which is interlocked in accordance with the irradiation point of the irradiated laser beam. CONSTITUTION:A micromanipulator 10 is installed on a supporting device 11, and a beam introducing device 9 is constituted of a flexible fiber beam introducing passage, by which a laser part 8 and the micromanipulator 10 are connected. The laser beam L introduced through the fiber beam introducing passage of a beam introducing device 9 is introduced from the upper part into a microscope 12 for operation in the micromanipulator 10, and collected to the surface layer part of a human body outside through a laser focussing lens and a beam splitter 18. The crossing point of a marker 19, e.g. a cross mark 21 is optical-axis- adjusted so as to be interlocked in accordance with the irradiation point of the laser beam L, and also the irradiation point of the laser beam can be easily recognized.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a laser device used for medical laser devices and the like.

2. Description of the Related Art Conventionally, laser devices such as those shown in FIG. 4 are examples of medical laser devices used in surgeries and the like. In FIG. 4, the medical laser device 1 is
A main unit 2 that is internally equipped with a driving power source, a cooler, etc., a laser unit 3 that houses a laser oscillation tube (not shown), and an articulated mirror that is connected to the laser output port on the upper part of the laser unit 3. It is composed of a light guide device 4 and a balance weight 5 attached to the opposite side of the mirror articulated light guide device 4, with the attachment portion of the mirror articulated light guide device 4 to the laser unit 3 as a fulcrum. Reflection mirrors (not shown) are housed in the joint portions of the mirror-articulated light guide device 4, and a light emission guide portion 6 is attached to the distal end thereof.

In the medical laser device 1 configured as described above, when the driving power source is turned on, the laser oscillation tube discharges and generates laser light, which passes through the mirror articulated light guiding device 4 having a reflecting mirror at the joint. Laser light is emitted from the light emitting guide section 6 at the tip, and the laser light is used to perform incisions on the surface layer of the human body.

Problems to be Solved by the Invention However, with this kind of device, when the operator holds the light emitting guide section 6 by hand, the joints cannot move freely because the movement of the joints is not smooth. Even when the balance weight 5 is constrained and moved, it is heavy due to the inertia of the balance weight 5, and furthermore, the optical axis of the reflective mirror attached to the joint is shifted from the center due to the wobbling of the joint, causing light to be emitted. There is a risk that the position of the light emitted from the guide section 6 may shift, and especially in the case of laser microsurgery performed by attaching a micromanipulator equipped with a microsurgery microscope instead of the light emission guide section 6, there is a risk that the position of the light emitted from the guide section 6 may shift. Misalignment of the optical axis also makes surgery impossible, and because of the mirror-articulated light guiding device, movement is restricted and it is difficult to move the position of the surgical microscope.

In addition, for example, in the case of a CO2 laser device, the mirror articulated light guiding device 4 is made of TlBr-T that can transmit CO2 laser light.
This type of fiber material is typically guided coaxially with the CO□ laser light in a mirror-articulated light guide, although this type of fiber material is typically used in mirror-articulated light guides to direct the CO□ laser light coaxially with the CO□ laser beam. He- indicates the laser beam irradiation point
Visible guide light consisting of Ne laser light etc. cannot be guided,
There was a problem that the irradiation point could not be specified.

The present invention solves the above-mentioned problems, and is a laser device that performs laser microsurgery by attaching a micromanipulator for microsurgery, etc., and has high reliability (, Another object of the present invention is to provide a laser device that can clearly specify the irradiation point of laser light with a simple structure.

Means for Solving the Problems In order to solve the above problems, the laser device of the present invention replaces the conventional mirror-articulated light guide path with a flexible fiber light guide path and uses a light emission guide device consisting of a micromanipulator for microsurgery or the like. and a laser oscillator, and further includes a marking glass inside the light emission guide device that corresponds to and interlocks with the irradiation point of the emitted laser beam.

Function The above configuration eliminates problems such as optical axis misalignment due to looseness of the joints that occur in the case of a mirror joint type light guide, and difficulty in moving the position of the surgical microscope due to movement restrictions, using flexible optical fibers. This problem is solved by the light guide path, and the CO2 laser beam irradiation point can also be easily confirmed by displaying a marker on a marking glass that matches and interlocks with the emitted laser beam irradiation point provided in the light emission guide device consisting of a micromanipulator etc. It becomes possible to do so.

Example An embodiment of the present invention will be described below based on the drawings.

FIG. 1 is a schematic perspective view showing an embodiment of a medical laser device for performing laser microsurgery to which the present invention is applied. In Fig. 1, 7 is a main unit equipped with a driving power source, a cooler, etc., 8 is a laser unit that houses a laser oscillation tube (not shown), and 9 is a light guide that guides CO□ laser light to the outside. Device,
Reference numeral 10 indicates a micromanipulator for microsurgery, for example, as a light emission guide device, and reference numeral 11 indicates, for example, a support stand as a positionally adjustable support device, to which the micromanipulator IO is attached.

The light guide device 9 is constituted by a flexible fiber light guide made of TIBr-TII material, etc., and connects the laser section 8 and the micromanipulator 10. The micromanipulator 10 has the configuration shown in FIG. In FIG. 2, 12 is a surgical microscope, and this surgical microscope 12 is provided with a pair of eyepieces 13, and an internal gimbal 14 is arranged on the opposite side of the pair of eyepieces 13.
An objective lens 15 is arranged between the pair of eyepieces 13 and the internal gimbal 14. Also, inside the internal gimbal 14 is a laser focusing lens 17 and a beam splitter 18.
are arranged respectively, and an external gimbal 16 is arranged around this internal gimbal I4. The laser light guided from the fiber light guide path of the light guide device 9 enters from the upper part of the figure, and enters the laser focusing lens 17.
, the light is focused on the external human body surface layer via the beam splitter 18. Reference numeral 19 is a marking glass for a marker and a trowel, and as shown in FIGS. 3(a) and 3(b), a cross mark such as 21 or a circle mark such as 22 is attached to the transparent glass surface 20. The optical axis is adjusted and arranged so that the cross point of the cross mark 21 or the center point of the circle mark 22 coincides with and interlocks with the irradiation point of the laser beam. 23 is a joystick, internal gimbal 14,
The irradiation direction of the laser beam is varied via an external gimbal 16.

With these configurations, when looking into the pair of eyepieces 13 with both eyes, the marker indicating the surface layer of the human body and the laser irradiation point can be seen, and the irradiation position of the CO2 laser beam can be determined.
CO with foot switch etc. While controlling the emission of laser light, the surface layer of the human body corresponding to the marker position can be irradiated with CO2 laser light to perform incisions and other surgeries. In addition to moving the micromanipulator 10 itself, the position of the laser beam can be changed by changing the direction of the optical system using the joystick 23. Furthermore, the same effect can be obtained by displaying a marker indicating the laser irradiation point on the surface of a marking plate made of a glass plate or the like using colored visible light of red or green.

Note that this embodiment is merely an example; for example, the above embodiment TE shows a micromanipulator for microsurgery attached to the output side of the laser beam, but instead of this, an appropriate light emission guide/device may be used. , may exist. Furthermore, although the micromanipulator is shown as being supported by a support stand, the micromanipulator is not limited to this, and may be a support member placed on the ceiling or floor. Further, although CO2 laser light is more effective, it goes without saying that similar effects can be obtained by using Ar or YAG laser light.

Effects of the Invention As described above, according to the present invention, since the laser light is transmitted through the fiber light guide path, the optical axis does not shift and the surgical microscope can be operated without being restricted in movement. The position of the laser can be easily moved, and since the laser irradiation point can be clearly seen by the marker made of marking glass placed on the micromanipulator, the laser beam can be accurately irradiated to the surface layer of the human body corresponding to the marker position.
A highly reliable laser device can be obtained with a simple configuration.

[Brief explanation of drawings]

FIG. 1 is a schematic perspective view of a medical laser device according to an embodiment of the present invention, FIGS. 2(a) and 2(b) are schematic plan and side sectional views of a micromanipulator of the medical laser device, Figures (a) and (b) are marker diagrams showing laser beam irradiation points in the same medical laser device, and Fig. 4 is a schematic perspective view of the conventional medical laser device. 7... Main body part, 8... Laser part, 9... Light guide device (flexible fiber light guide path), 1G... Light emission guide device (micromanipulator), 11°° support device,
12... Surgical microscope, 13... Eyepiece, 19...
・Marking glass. Fig. 3 (4-C button) 27 = 7G matacho ν 22-4N

Claims (1)

[Claims] 1. Equipped with a laser oscillator equipped with a driving power source and a cooler, a support device whose position can be adjusted freely, and a marker that is attached to this support device and moves in alignment with the irradiation point of the emitted laser beam. A laser device comprising: a light emitting guide device comprising a surgical microscope or the like; and a light guide device comprising a flexible light guide path made of an optical fiber connecting the laser oscillator and the light emitting guide device.