JPH03212983A - Laser device - Google Patents

Abstract

PURPOSE:To irradiate a laser beam on a small area by a simple operation by a method wherein a which can change an irradiation field area is installed in a hand piece. CONSTITUTION:A diaphragm blade device 10 is installed at a window member 9 which is used to attach and detach a filter to and from a band piece 4 which is used to condense and irradiate a laser beam. Thereby, a laser irradiation cross-sectional area becomes variable. By this constitution, laser beam irradiation on small area can be made possible by a simple operation.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a laser device for treating an affected part of a human body using, for example, a laser beam.

(Prior art) Currently, in the field of plastic surgery, "bruises", "spots", "
In order to treat diseases such as black spots, a laser device is used that directs a laser beam emitted from a laser oscillator into an optical fiber, and then directs the laser beam emitted from the optical fiber to the affected area of the human body. It is being

The entire structure of this therapeutic laser device is shown in FIG. In the figure, 1 is a power supply device, 2 is a laser beam oscillation device, and 3 is a power supply device.
is an optical fiber, and 4 is a handpiece. A power supply device 1 is connected to a laser beam transmitting device 2.

It supplies energy. Laser beam oscillation device 2
For example, this type uses a lamp excitation method and employs a solid-state laser rod to oscillate laser light, and the oscillated laser light is focused by a lens. The tip fiber 3 has one end connected to the laser beam oscillation device 2 and the other end connected to the hand piece 4, and the laser beam focused by the lens of the laser beam oscillation device 2 is incident thereon and guided to the hand piece 4. It is something.

The handpiece 4 is equipped with an optical system component, such as a kaleidoscope that is a laser beam output averaging member, and a lens, and focuses the laser beam emitted from the other end of the optical fiber 3 to the human body. It is used to irradiate the affected area.

Further, the hand piece 4 is provided with a window member located in front of the optical system components in the laser beam traveling direction, and the window formed in this window member defines the irradiation field of the laser beam to a preset constant size. That's what I do. When irradiating the laser beam, the operator holds the handpiece with his/her hand and applies the window member to the patient's affected area and holds the handpiece in place.In this state, the laser beam that comes from the optical fiber and passes through the optical system components is irradiated onto the affected area through the window of the window member.

(Problems to be Solved by the Invention) However, this conventional laser device has the following problems.

In handpieces used in conventional therapeutic laser devices, the irradiation of the laser beam onto the affected area is controlled by the window of the window member, which allows the laser beam to be irradiated onto the affected area to a standard size of the affected area ("bruise", "stain", "black mark Δ"). It is specified to be a certain size based on the assumption that the

However, the affected areas, such as bruises, stains, and black marks, have various sizes, and some of the affected areas are smaller than the laser beam irradiation defined by the window in the handpiece. When irradiating such a small affected area with laser light using a conventional handpiece, 1. The laser beam irradiates the healthy skin around the affected area. Unnecessary laser beam irradiation to the skin in such healthy areas will cause cancerous damage to the healthy skin.

Therefore, in such cases, in order to form a smaller irradiation field than the laser beam irradiation defined by the window member of the handpiece, holes with a small area corresponding to the size of the affected area are formed in a reflective sheet such as paper. I am using a reflective mask. That is, when irradiating laser light, this reflective mask is placed on the area where the affected area is present, and the holes are aligned with the affected area.

Then, the window member of the handpiece is placed on top of the reflective mask, and the laser beam is irradiated onto the affected area through the holes in the reflective mask.

However, when using a reflective mask in this way, it is difficult to accurately form holes in the reflective sheet that match the size of the affected area. may unnecessarily irradiate healthy areas around the affected area. Furthermore, it is difficult to accurately align the holes of the reflective mask with the affected area, resulting in a time-consuming task of laser beam irradiation. The present invention has been made based on the above-mentioned circumstances, and an object of the present invention is to provide a laser device that can obtain a required small amount of laser light irradiation with a simple operation in a handpiece.

[Configuration of the Invention (Means for Solving the Problems) To achieve the above object, the laser device of the present invention guides a laser beam oscillated from a laser oscillation unit to a handpiece through an optical fiber, and In the apparatus for condensing and irradiating laser light using system components, the hand piece is characterized in that it is equipped with means for varying the irradiation field of the laser light.

(Function) The laser beam that has passed through the optical system components of the handpiece passes through means for varying the irradiation field area and irradiates the irradiated area. In the irradiation field area variable means, the area through which the laser beam passes is set in advance to a required irradiation field area. Therefore, the laser beam passes through the irradiation field area adjusting means to set the irradiation field area to a required size.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

An embodiment in which the present invention is applied to a therapeutic laser beam device will be described.

The therapeutic laser beam device of this embodiment is comprised of a power supply device 1, a laser beam oscillation device 2, an optical fiber 3, and a hand piece 4, as shown in FIG.

Next, the handpiece 4 will be explained with reference to FIGS. 1 to 4.

The handpiece 4 includes a cylindrical case 5, the output end of the optical fiber 3 is connected to the rear end of the case 5, and the inside of the case 5 has a caloid which is an energy-averaging transparent member. A scope 6 is arranged in the axial direction. The kaleidoscope 6 is made of, for example, a rectangular quartz rod, and the energy is averaged by transmitting the laser beam. A lens 7 is attached to the front end of the caser. A pair of arms 8.8 are provided that extend forward in the direction of the laser beam optical axis from opposing portions of the front end of the case 5 across the central axis.
A window member 9 having a rectangular window is integrally formed at the tip. This window member 9 holds the hand piece 4 by applying it to the patient's affected area during laser beam irradiation, and also defines the laser beam irradiation field, and its position corresponds to the focal position of the lens 7.

The window member 9 is provided with an aperture blade device 10 as an irradiation field area variable means for adjusting the size of the irradiation field area of the laser beam. As shown in FIGS. 2 and 3, this aperture blade device 10 includes a manually operated operation ring (not shown),
A plurality of arc-shaped blades 11 are arranged inside the operating ring in a radial combination in the circumferential direction and are connected to the operating ring. A window member is movably supported by a bottle 14 on the member 9. Each blade 11 is formed with a straight guide elongated hole 12, and these elongated holes 12 engage with a pin 13 provided in the window member 9.

Therefore, when the operating ring is rotated in a certain direction, the guide elongated hole 12 and the pin 13 engage, and each blade 11 is guided by the guide elongated hole 12 and rotates toward the center, allowing the laser beam to pass through. The area of the irradiation field decreases as the area closes. Furthermore, when the operating ring is rotated in the opposite direction, the guide slot 12 and the pin 13 engage, and each blade 11 is guided by the guide slot 12 and rotates toward the outer periphery, and the portion through which the laser beam passes The area of the irradiation field expands.

The operation of the therapeutic laser device configured in this way will be explained.

During treatment, the aperture blade device 10 provided on the window member 9 of the handpiece 4 is used to reduce the laser beam irradiation field to "bruises", "
Set the size to match the size of the stain and black mark. This irradiation field setting operation is performed by the operator using the aperture blade device 10.
Rotate the operation ring in a predetermined direction, move the entire blade 11 toward the center or the outer periphery under the guidance of the guide slot 2, so that the part surrounded by the blades 11 through which the laser light passes closes or opens. The area of the irradiation field is reduced or expanded by changing the This operation is simple as it only requires rotating the operating ring.

When treating the affected area of a patient using a laser device,
An operator holds the handpiece 4 and holds the handpiece 4 in position by applying the window member 9 provided on the arm 8.9 of the case 5 to the affected area of the patient.

A laser beam is oscillated in the laser beam oscillation device 2 and enters the inside of the optical fiber 3 from the end face on the laser beam incidence side. The laser beam passes through the inside of the optical fiber 3 and is emitted to the output side end connected to the hand piece 4 .

In the handpiece 4, the laser beam emitted from the end of the tip fiber 3 is passed through the kaleidoscope 6, and then the laser beam is focused through the lens 7 at the position of the window z, that is, on the skin surface of the affected area of the patient. irradiate. In this case, lens 7
The laser beam that has passed through passes through the optical path between the arms 8.8 and reaches the window member 9.

In the window member 9, the laser beam is applied to each blade 11 of the aperture blade device 10.
Pass through the space surrounded by. The space surrounded by each blade 11 of the aperture blade device 10 is set to the size of the affected area of the patient, as described above.

Therefore, by passing through the space surrounded by each blade 11, the laser beam is irradiated onto the affected area of the patient while being restricted to the area of the irradiation field having a size that matches the size of the affected area.

For this reason, the laser beam is irradiated only on the affected area that requires treatment, thereby properly treating the affected area, and the healthy areas surrounding the affected area that do not require irradiation are not irradiated, and healthy areas are damaged by the laser beam irradiation. This can be prevented.

In the above-described embodiment, an aperture blade mechanism is provided as a laser beam irradiation field area variable means, but the present invention is not limited to this, and other types of mechanisms may also be used.

For example, FIGS. 5 and 6 show an example in which a filter is used as the laser beam irradiation field area variable means.

That is, a plurality of types of filters 16 having holes 15 through which the laser light passes and different sizes of the holes through which the laser light passes are prepared, and the filters 16 have laser light transmitting holes 15 that match the size of the affected area of the patient during treatment. Select filter 16. A filter support part 17 is provided in the window member 9 of the hand piece 4, into which a filter number is removably inserted and supported, and a selected filter 16 is inserted therein and supported. This embodiment also provides the same effects as the previously described embodiment.

In each of the embodiments described so far, the window member 9 of the hand piece 4 is provided with means for varying the area of the laser beam irradiation field. However, the position where the laser beam irradiation field area variable means is provided is not limited to this. For example, as shown in FIG. 7, the aperture blade device 10 may be provided in front of the kaleidoscope 6 inside the hand piece 9.

The laser device of the present invention is not limited to treatment, but can be applied to various uses.

[Effects of the Invention] As explained above, according to the laser device of the present invention, the laser beam oscillated from the laser oscillation section is guided to the handpiece through the optical fiber, and the laser beam is focused by the optical system components of the handpiece. In this device, the handpiece is equipped with a means to vary the irradiation area of the laser beam, making it possible to obtain the required size of laser beam irradiation field area with a simple operation on the handpiece. When irradiating a laser beam onto a portion of the area to be irradiated, the irradiation field area of the laser beam can be easily adjusted to match the irradiated portion, and appropriate laser beam irradiation can be performed.

[Brief explanation of drawings]

1 to 4 show an embodiment of the handpiece in the laser device of the present invention, in which FIG. 1 is a longitudinal sectional view, FIGS. 2 and 3 are front views of the window member, and FIG. 4 is an aperture diaphragm. 5 and 6 show other embodiments of the hand piece in the laser device of the present invention, FIG. 5 is a longitudinal sectional view, and FIG. A diagram showing a window member,
FIG. 7 is a longitudinal sectional view showing another embodiment of the handpiece in the laser device of the present invention, and FIG. 8 is a diagram showing the laser device.

Claims (1)

[Claims] In a device that guides a laser beam oscillated from a laser oscillation unit to a handpiece through an optical fiber, and focuses and irradiates the laser beam with an optical system component of the handpiece, the handpiece changes the irradiation field area of the laser beam. A laser device comprising: means.