JPS6251625B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a medical laser device that treats an affected area by making a laser beam enter a laser probe inserted into an insertion channel of an endoscope.

Recently, by inserting a laser probe into the insertion channel of an endoscope and making the laser beam output from an external laser oscillation part enter the laser probe, the laser beam emitted from the tip can be used to enter the body cavity. Treatment of the affected area is being carried out. In such laser treatments, one type of laser light does not have different medical effects such as incision and hemostasis, so a CO ₂ laser is used for incision, and a YAG or argon laser is used for hemostasis. Therefore, in order to provide a medical laser device with a plurality of medical effects, the device must be equipped with a plurality of laser oscillation units that output different types of laser beams.

By the way, when using a device equipped with multiple laser oscillation units, the medical effect of the laser light output from each laser oscillation unit is different, so the operator must be sure of the type of laser light being output at that time. If it could not be identified, there was a serious risk of incorrect treatment. However, with conventional devices, no consideration was given to ensuring that the operator could reliably and easily identify the type of laser light being output at that time, which led to concerns about safety in laser treatment. There was a big problem.

This invention has been made based on the above circumstances, and its purpose is to use an audio signal to determine which laser oscillation unit outputs laser light from among the laser oscillation units that output different types of laser light. It is an object of the present invention to provide a medical laser device in which laser light can be reliably and easily identified by informing the operator.

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. In the figure, 1 is the main body of the medical laser device. A first laser oscillation section 2, such as a CO ₂ laser, and a second laser oscillation section 3, such as a YAG laser, each having shutters 2a and 3a, are built into the main body 1. A switching device 4 is connected to the first and second laser oscillation units 2 and 3, and this switching device 4 has a built-in first switch 5 and a second switch 6 as shown in FIG. ing. When the first laser oscillation section 2 is activated, the first switch 5 is closed, and when the second laser oscillation section 3 is activated, the second switch 6 is closed.

The first laser beam _L1 output from the first laser oscillation unit 2 is reflected by the first reflecting mirror 7 and changes its course. The second output from the second laser oscillation section 3
The laser beam _L2 is reflected by the second reflecting mirror 8, changes its course, passes through the first reflecting mirror 7, and travels along the same optical path as the first laser beam _L1 . A condenser lens 9 is disposed on the optical path where the first laser beam _L1 and the second laser beam _L2 coincide, and the first laser beam L1 or the second laser beam _L1 or the second laser beam L2 focused by the condenser lens 9 The laser beam _L2 is made to enter a through hole 10a of a light guide portion 10 provided to penetrate the side wall of the main body 1. Through hole 10a of this light guide portion 10
The base end portion of the laser probe 11 is detachably attached to the base end portion of the laser probe 11 . This laser probe 11 is inserted into an insertion channel 13 of an endoscope 12. Therefore, the first laser beam L ₁ or the second laser beam L ₂ emitted from the tip surface of the laser probe 11
The inner wall 14 of the body cavity is irradiated by the laser to perform laser treatment. Note that the endoscope 12 has a built-in observation optical system 15 for observing the state of laser treatment. This observation optical system 15 consists of an image guide 17 inserted over almost the entire length of the insertion section 16 of the endoscope 12, an objective lens 18 facing the tip of the image guide 17, and an eyepiece 19 facing the rear end. Become.

On the other hand, a sound signal oscillation control device 20 is connected to the switching device 4. That is, in the switching device 4, a first timer circuit 21 and a first sound signal oscillation circuit 22 are sequentially connected to the first switch 5, and a second timer circuit 23 and a first sound signal oscillation circuit are connected to the second switch 6. A second sound signal oscillation circuit 24 having a different frequency oscillator from the first sound signal oscillation circuit 22 is sequentially connected. The first and second sound signal oscillation circuits 22 and 24 are connected to an amplifier 26 via an OR circuit 25, and a speaker 27 is connected to the amplifier 26.

Next, the operation of the above configuration will be explained. First, when the operator outputs the first laser beam _L1 from the first laser oscillation unit 2 in order to perform an incision treatment,
This laser beam L ₁ is totally reflected by the first reflecting mirror 7 and is focused by the condensing lens 9.
The light is incident on the base end of the laser probe 11 attached to the laser probe 0a. Then, the first laser beam _L1 is emitted from the tip surface of the laser probe 11 and is emitted onto the inner wall of the body cavity 14.
This will be followed by irradiation and incision treatment at this area.
Furthermore, in order to perform hemostatic treatment, if the second laser beam L ₂ is outputted from the second laser oscillation unit 3, this second laser beam L ₂ is totally reflected by the second reflecting mirror 8 and then The condenser lens 9 passes through the first reflecting mirror 7.
The light enters the laser probe 11 from its proximal end, exits from its distal end, and irradiates the body cavity inner wall 14, thereby performing hemostasis treatment at this site.

By the way, when the first laser beam _L1 is outputted from the first laser oscillation unit 2 in order to perform an incision treatment, the first switch 5 of the switching device 4 is closed and the first timer circuit 21 is activated. , this first
The signal from the first switch 5 is input to the first sound signal oscillation circuit 22 via the timer circuit 21 .
Then, a signal of a predetermined frequency is transmitted from the frequency oscillator built in the sound signal oscillation circuit 22 to the OR circuit 25.
The signal is input to the amplifier 26 via the amplifier 26 and amplified, and then output to the speaker 27. Therefore, the operator can use the sound signal generated from the speaker 27 according to the set time of the first timer circuit 21 to cause the first laser beam L ₁ for incision to be emitted from the first laser oscillation section 2. You can audibly identify that the output is being output.

Furthermore, when the second laser beam _L2 is output from the second laser oscillation unit 3 in order to perform hemostatic treatment, the second switch 6 of the switching device 4 is closed, so that the first switch 5 is closed. Similarly to the above, a sound signal is generated from the speaker 27 according to the set time of the second timer circuit 23. At this time, the first sound signal oscillation circuit 22 and the second sound signal oscillation circuit 24
Since the first switch 5 has a different frequency oscillator, a different sound signal is generated than when the first switch 5 is closed. Therefore, the operator uses this sound signal to
It can be identified that the second laser beam _L2 is output from the laser oscillation section 3 of.

Other embodiments of the invention are shown in FIGS. 3 and 4. This embodiment differs from the above-described embodiment in the means for detecting which of the first and second laser oscillation units 2 and 3 is outputting laser light. That is, in this embodiment, the first and second laser beams L 1 and L ₂ are transmitted between the first reflecting mirror ₇ and the condensing lens 9.
A third reflecting mirror 28 is arranged to reflect a part of the laser beams L ₁ , L ₂ reflected by this third reflecting mirror 28.
An optical filter 29 was provided on the optical path. This optical filter 29 absorbs either one of the first and second laser beams L ₁ and L ₂ , for example, the second laser beam L ₂ . A light receiving element 30 is arranged on the transmission side of this optical filter 29, and this light receiving element 3
0 is connected to an amplifier 31 built in the sound signal oscillation control device 20. This amplifier 31 includes a comparison circuit 32 that compares the output from this amplifier with a reference voltage lower than the voltage generated by the light receiving element 30 when receiving light.
is connected to the first timer circuit 21 directly and to the second timer circuit 33 via an inverter 33.
The timer circuit 23 is connected to the timer circuit 23 of FIG.

Therefore, according to such a configuration, when the first laser beam L ₁ is output from the first laser oscillation unit 2, the first laser beam L ₁ reflected by the third reflecting mirror 28 is A portion of the light passes through the optical filter 29 and is received by the light receiving element 30, so the voltage generated by the light receiving element 30 is amplified by the amplifier 31 and compared with the reference voltage of the comparator circuit 32. Then, the comparison circuit 32 outputs a signal due to the input of a voltage larger than the set reference voltage, and this signal activates the first timer circuit 21 and outputs a signal. Sound signal oscillation circuit 22
The signal that is input to and output from this is OR circuit 2
5 and an amplifier 26, the signal is output from the speaker 27 as a sound signal.

Further, when the second laser beam L ₂ is output from the second laser oscillation unit 3, a part of the second laser beam L ₂ reflected by the third reflecting mirror 28 is passed through the optical filter 2.
Since the light is absorbed by the light receiving element 30, no voltage is generated in the light receiving element 30. Then, since no signal is output from the comparison circuit 32, the first timer circuit 21 does not operate, and the signal is output from the comparison circuit 32 via the inverter 33.
The second timer circuit 23 connected to the second timer circuit 23 is activated. Therefore, the second
A sound signal is generated based on the frequency of a frequency oscillator built into the sound signal oscillation circuit 24.

Note that this invention is not limited to the above embodiments,
For example, the sound signal generated when laser light is output from each laser oscillation unit may not only have different frequencies, but may also vary in waveform, amplitude, sound generation interval, etc. They may be combined to generate different sound signals.

As described above, the present invention detects the operating laser oscillation section and operates based on this detection signal in a device that performs different types of laser treatment by selectively switching and operating a plurality of laser oscillation sections. Different sound signals are generated depending on the laser oscillation section. Therefore, the operator can reliably and easily identify by hearing what kind of laser treatment the laser beam output at that time is suitable for, based on the above-mentioned sound signal. Laser treatment can be performed safely.

[Brief explanation of the drawing]

FIG. 1 is a schematic block diagram of the entire device showing one embodiment of the present invention, FIG. 2 is a block diagram of the sound signal oscillation control circuit, and FIG. 3 is a schematic diagram of the entire device showing another embodiment of the invention. The schematic configuration diagram, FIG. 4, is also a block diagram of the sound signal oscillation control circuit. 2, 3... Laser oscillation unit, 4... Switching device, 11... Laser probe, 22, 24... Sound signal oscillation circuit, 27... Speaker, 29... Optical filter, 30... Light receiving element.

Claims (1)

[Claims] 1. By having a plurality of laser oscillation units and selectively switching and operating these laser oscillation units,
A device that makes laser light output from each laser oscillation section enter the base end of a laser probe includes a detection means for detecting an operating laser oscillation section among the plurality of laser oscillation sections, and a detection means for detecting an operating laser oscillation section from among the plurality of laser oscillation sections; A medical laser device comprising a sound signal generating means that generates different sound signals depending on a laser oscillation unit operating with a detection signal. 2. The medical laser device according to claim 1, wherein the detection means is a switching means that selectively switches and operates a plurality of laser oscillation units. 3. The medical laser device according to claim 1, wherein the detection means is a photoelectric element that detects laser light output from an operating laser oscillation section.