JPH05184591A - Hand piece for laser operating device - Google Patents

Abstract

PURPOSE:To enable the disposition of an air supplying end for blowing in a part which does not hinder an operation and field of view. CONSTITUTION:The holder part 11 and condenser lens 12 of the hand piece for a laser operating device which condenses the laser beam introduced therein by the condenser lens 12 mounted to the holder part 11, emits the laser beam from a laser beam projection end 14 and blows air for blowing out of the laser beam projection end form a spacing 15 to enable the passage of the air in the condenser lens mounting part and a blowing device is mounted to the laser beam incident side of the condenser lens so that the air for blowing is supplied from the laser beam incident side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handpiece used in a laser surgical apparatus for performing a surgery by guiding laser light from a YAG laser, a CO ₂ laser or the like to a handpiece and emitting the laser light.

[0002]

2. Description of the Related Art A conventional laser surgical apparatus is designed to facilitate movement of a handpiece, which is a surgical terminal, to an arbitrary location.
It is an articulated manipulator type. Each joint is provided with a reflection mirror to guide the laser light to the handpiece. The handpiece is generally a straight tube type,
In many cases, a condenser lens is provided in front of the laser light emitting end. When surgery is performed with this handpiece,
A large amount of smoke is explosively generated by the irradiation of the laser beam from the surgical target. Since this smoke may enter the handpiece and stain the condenser lens, blowing air is blown out from the laser light emitting end of the handpiece to prevent the smoke from entering.

FIG. 2 shows a conventional example of this type of handpiece. In the handpiece 20, a condenser lens 22 is fixed in the middle of a cylindrical holder 21. Air is supplied from a compressed air source (not shown) to the air supply end 23 provided between the condenser lens 22 and the laser light emission end 24, and is blown out from the laser light emission end 24.

[0004]

In the above-mentioned conventional handpiece, since the air supply end for blowing is provided between the condenser lens and the laser light emission end, the air supply end is used for operating the handpiece. There are problems such as obstruction and obstruction of the visual field.

It is an object of the present invention to provide a handpiece in which the air supply end can be arranged at a portion that does not hinder the operation or the visual field.

[0006]

In the handpiece of the present invention, the introduced laser light is condensed by a condensing lens attached to the holder part and emitted from the laser light emission end and from the laser emission end. A handpiece for a laser surgical apparatus that blows out blowing air, wherein a holder portion and a condenser lens form a gap that allows the air to pass through at the condenser lens mounting portion, It is attached to the laser light incident side of the condensing lens, and blow air is supplied from the laser light incident side. Also, whether the peripheral portion of the condenser lens is cut out to form the gap,
It is preferable that a groove is provided on the inner wall of the holder portion to form the gap.

[0007]

Since the holder portion and the condenser lens are coupled so that there is a gap through which air can pass, the blower supplies air from the laser light incident side of the condenser lens to collect the air. It can be passed through the attachment part of the lens and blown out from the laser emission end. Therefore, there is no obstacle such as a blow device near the tip of the handpiece.

[0008]

Embodiments of the present invention will now be described with reference to the drawings. 1A is a view showing the structure of an embodiment of the handpiece of the present invention, and FIG. 1B is a sectional view taken along the line AA of FIG. 1A. The handpiece 10 of this embodiment includes a cylindrical holder 11 and a condenser lens 12 fixed inside the holder 11. The holder 11 is provided with an air supply end 13 for supplying blow air from the laser light incident side of the condenser lens 12. The condensing lens 12 condenses the laser light sent from the side of the articulated manipulator type arm (not shown), which is the incident side, and emits it from the emitting end 14 toward the object. Further, the outer edge of the condenser lens 12 is cut out, and a gap 15 is formed between it and the inner wall of the holder 11.

A compressed air source (not shown) is provided at the air supply end 13.
Compressed air for blowing is sent from the laser beam emitting end 1 through the gap 15 between the condenser lens 12 and the inner wall of the holder 11.
Blow out from 4. The blown compressed air prevents a large amount of smoke explosively generated from the object from entering the handpiece 10 by the irradiation of the laser beam. Further, the handpiece is attached to the arm tip of the articulated manipulator, which is a light guide path for the laser light, but in order to prevent the air supplied from the air supply end from flowing out toward the laser light entrance end, A window member (not shown) that transmits laser light and blocks the flow of air is attached to the arm of the articulated manipulator near the laser light incident end or near the handpiece.

Although air is supplied from the air supply end 13 in this embodiment, it is clear that an inert gas such as nitrogen N ₂ can be used depending on the case (for example, to weaken the oxidation). Further, in this embodiment, the condenser lens 12 is used.
Although the outer edge is cut out, a through hole may be provided at a position other than the portion through which the laser light passes, or a groove or the like may be provided on the inner wall of the holder 11 to form an air flow passage.

[0011]

As described above, according to the present invention, the holder portion of the handpiece and the condenser lens mounted inside the holder portion form a gap through which air can pass, and the blowing device blows. Air is supplied from the laser light incident side of the condensing lens and blown out from the laser light emitting end through the gap, so that the blower device does not hinder the operation of the handpiece or obstruct the visual field. There is an effect.

[Brief description of drawings]

FIG. 1A is a diagram showing a configuration of an embodiment of a handpiece of the present invention. (B) is sectional drawing in the AA line of (a).

FIG. 2 is a diagram showing a configuration of a conventional example.

[Explanation of symbols]

 10 Handpiece 11 Holder 12 Condensing Lens 13 Air Supply End 14 Laser Light Emitting End 15 Gap

Claims (3)

[Claims] 1. A laser surgical apparatus for converging the introduced laser light with a condensing lens attached to a holder part, emitting the laser light from the laser light emitting end, and blowing air for blowing from the laser emitting end. In the handpiece of, the holder portion and the condenser lens form a gap that allows the air to pass through the condenser lens mounting portion, and the blow device is attached to the laser light incident side of the condenser lens, A handpiece characterized by supplying blow air from the laser light incident side. 2. The handpiece according to claim 1, wherein a peripheral portion of the condenser lens is cut out to form the gap. 3. The handpiece according to claim 1, wherein a groove is provided on an inner wall of the holder portion to form the gap.